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Illinois · United States · America/Chicago

Chicago travel calendar 2027

Every day of 2027 in Chicago, United States, as one dated row: the weekend, public holidays, sunrise and sunset, and the typical high and low for the time of year. Each figure is a published fact or a calculation from one, with its source below; nothing here is a forecast, and the guide has no prices or crowd figures.

Comfortable months
None
Nationwide public holidays
15
Regional holidays in Illinois
2
Longest day
22 Jun · 15 h 14 min
Shortest day
22 Dec · 9 h 08 min

The same 365 rows as JSON — field definitions, sources and licences included (calendar.json).

Chicago in 2027

Chicago 2027 at a glance

No month in Chicago meets the comfort measure used here (average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month).

The United States has 15 nationwide public holidays in 2027; the month with the most is December (3). 2 further days are public holidays in Illinois only. Source: python-holidays (MIT), computed from the country's holiday rules.

Runs of three or more days off in a row (weekend days, Sat and Sun in the United States, and public holidays) that include a public holiday:

  • 1 Jan – 3 Jan (3 days): New Year's Day
  • 16 Jan – 18 Jan (3 days): Martin Luther King Jr. Day
  • 12 Feb – 15 Feb (4 days): Lincoln's Birthday, Washington's Birthday
  • 27 Feb – 1 Mar (3 days): Casimir Pulaski Day
  • 29 May – 31 May (3 days): Memorial Day
  • 18 Jun – 20 Jun (3 days): Juneteenth National Independence Day (observed), Juneteenth National Independence Day
  • 3 Jul – 5 Jul (3 days): Independence Day, Independence Day (observed)
  • 4 Sep – 6 Sep (3 days): Labor Day
  • 9 Oct – 11 Oct (3 days): Columbus Day
  • 24 Dec – 26 Dec (3 days): Christmas Day (observed), Christmas Day

The longest day is Tue 22 June 2027, with 15 h 14 min from sunrise to sunset; the shortest is Wed 22 December 2027, with 9 h 08 min.

January 2027 in Chicago

1991–2020 averages for January: high 0 °C, low -8 °C, 57 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 1 °C on the 1st to 1 °C on the 31st. Chicago in January

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
New Year's Day · nationwide07:17–16:289 h 11 min1 / -7No
Weekend07:18–16:299 h 12 min1 / -7No
Weekend07:18–16:309 h 12 min1 / -7No
07:18–16:319 h 13 min1 / -7No
07:18–16:329 h 14 min1 / -7No
07:18–16:339 h 15 min1 / -7No
07:17–16:349 h 16 min1 / -7No
07:17–16:359 h 17 min1 / -7No
Weekend07:17–16:369 h 19 min1 / -8No
Weekend07:17–16:379 h 20 min1 / -8No
07:17–16:389 h 21 min0 / -8No
07:16–16:399 h 22 min0 / -8No
07:16–16:409 h 24 min0 / -8No
07:16–16:419 h 25 min0 / -8No
07:15–16:429 h 27 min0 / -8No
Weekend07:15–16:439 h 28 min0 / -8No
Weekend07:14–16:449 h 30 min0 / -8No
Martin Luther King Jr. Day · nationwide07:14–16:459 h 32 min0 / -8No
07:13–16:479 h 33 min0 / -8No
07:13–16:489 h 35 min0 / -8No
07:12–16:499 h 37 min0 / -8No
07:12–16:509 h 39 min0 / -8No
Weekend07:11–16:529 h 41 min0 / -8No
Weekend07:10–16:539 h 43 min1 / -8No
07:09–16:549 h 45 min1 / -8No
07:09–16:559 h 47 min1 / -8No
07:08–16:579 h 49 min1 / -8No
07:07–16:589 h 51 min1 / -8No
07:06–16:599 h 53 min1 / -8No
Weekend07:05–17:009 h 55 min1 / -8No
Weekend07:04–17:029 h 57 min1 / -7No

February 2027 in Chicago

1991–2020 averages for February: high 2 °C, low -7 °C, 48 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 1 °C on the 1st to 5 °C on the 28th. Chicago in February

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
07:03–17:0310 h 00 min1 / -7No
07:02–17:0410 h 02 min1 / -7No
07:01–17:0610 h 04 min1 / -7No
07:00–17:0710 h 07 min1 / -7No
06:59–17:0810 h 09 min1 / -7No
Weekend06:58–17:1010 h 11 min2 / -7No
Weekend06:57–17:1110 h 14 min2 / -7No
06:56–17:1210 h 16 min2 / -7No
06:55–17:1410 h 19 min2 / -7No
06:54–17:1510 h 21 min2 / -7No
06:52–17:1610 h 24 min2 / -7No
Lincoln's Birthday · regional (Illinois)06:51–17:1710 h 26 min2 / -7No
Weekend06:50–17:1910 h 29 min2 / -7No
Weekend06:48–17:2010 h 32 min2 / -7No
Washington's Birthday · nationwide06:47–17:2110 h 34 min2 / -7No
06:46–17:2310 h 37 min2 / -6No
06:45–17:2410 h 39 min3 / -6No
06:43–17:2510 h 42 min3 / -6No
06:42–17:2610 h 45 min3 / -6No
Weekend06:40–17:2810 h 47 min3 / -6No
Weekend06:39–17:2910 h 50 min4 / -5No
06:37–17:3010 h 53 min4 / -5No
06:36–17:3210 h 56 min4 / -5No
06:35–17:3310 h 58 min4 / -5No
06:33–17:3411 h 01 min4 / -5No
06:32–17:3511 h 04 min5 / -5No
Weekend06:30–17:3711 h 07 min5 / -4No
Weekend06:28–17:3811 h 09 min5 / -4No

March 2027 in Chicago

1991–2020 averages for March: high 9 °C, low -1 °C, 64 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 5 °C on the 1st to 12 °C on the 31st. Chicago in March

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
Casimir Pulaski Day · regional (Illinois)06:27–17:3911 h 12 min5 / -4No
06:25–17:4011 h 15 min6 / -4No
06:24–17:4111 h 18 min6 / -4No
06:22–17:4311 h 20 min6 / -4No
06:21–17:4411 h 23 min6 / -3No
Weekend06:19–17:4511 h 26 min6 / -3No
Weekend06:17–17:4611 h 29 min7 / -3No
06:16–17:4711 h 32 min7 / -3No
06:14–17:4811 h 34 min7 / -3No
06:12–17:5011 h 37 min7 / -2No
06:11–17:5111 h 40 min7 / -2No
06:09–17:5211 h 43 min8 / -2No
Weekend06:07–17:5311 h 46 min8 / -2No
Weekend07:06–18:5411 h 49 min8 / -2No
07:04–18:5511 h 51 min8 / -2No
07:02–18:5711 h 54 min9 / -1No
07:01–18:5811 h 57 min9 / -1No
06:59–18:5912 h 00 min9 / -1No
06:57–19:0012 h 03 min9 / -1No
Weekend06:55–19:0112 h 06 min9 / -1No
Weekend06:54–19:0212 h 08 min10 / 0No
06:52–19:0312 h 11 min10 / 0No
06:50–19:0412 h 14 min10 / 0No
06:48–19:0512 h 17 min10 / 0No
06:47–19:0712 h 20 min11 / 0No
06:45–19:0812 h 23 min11 / 0No
Weekend06:43–19:0912 h 25 min11 / 1No
Weekend06:42–19:1012 h 28 min11 / 1No
06:40–19:1112 h 31 min11 / 1No
06:38–19:1212 h 34 min12 / 1No
06:36–19:1312 h 37 min12 / 1No

April 2027 in Chicago

1991–2020 averages for April: high 15 °C, low 4 °C, 106 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 12 °C on the 1st to 18 °C on the 30th. Chicago in April

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
06:35–19:1412 h 40 min12 / 1No
06:33–19:1512 h 42 min12 / 2No
Weekend06:31–19:1612 h 45 min13 / 2No
Weekend06:30–19:1712 h 48 min13 / 2No
06:28–19:1812 h 51 min13 / 2No
06:26–19:2012 h 53 min13 / 2No
06:24–19:2112 h 56 min13 / 3No
06:23–19:2212 h 59 min14 / 3No
06:21–19:2313 h 02 min14 / 3No
Weekend06:19–19:2413 h 04 min14 / 3No
Weekend06:18–19:2513 h 07 min14 / 3No
06:16–19:2613 h 10 min14 / 3No
06:14–19:2713 h 13 min15 / 4No
06:13–19:2813 h 15 min15 / 4No
06:11–19:2913 h 18 min15 / 4No
06:10–19:3013 h 21 min15 / 4No
Weekend06:08–19:3113 h 23 min16 / 4No
Weekend06:06–19:3313 h 26 min16 / 5No
06:05–19:3413 h 29 min16 / 5No
06:03–19:3513 h 31 min16 / 5No
06:02–19:3613 h 34 min16 / 5No
06:00–19:3713 h 37 min17 / 5No
05:59–19:3813 h 39 min17 / 5No
Weekend05:57–19:3913 h 42 min17 / 6No
Weekend05:56–19:4013 h 44 min17 / 6No
05:54–19:4113 h 47 min17 / 6No
05:53–19:4213 h 49 min18 / 6No
05:51–19:4313 h 52 min18 / 6No
05:50–19:4513 h 54 min18 / 7No
05:49–19:4613 h 57 min18 / 7No

May 2027 in Chicago

1991–2020 averages for May: high 22 °C, low 10 °C, 104 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 18 °C on the 1st to 24 °C on the 31st. Chicago in May

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
Weekend05:47–19:4713 h 59 min18 / 7No
Weekend05:46–19:4814 h 02 min19 / 7No
05:45–19:4914 h 04 min19 / 7No
05:43–19:5014 h 07 min19 / 8No
05:42–19:5114 h 09 min19 / 8No
05:41–19:5214 h 11 min19 / 8No
05:40–19:5314 h 14 min20 / 8No
Weekend05:38–19:5414 h 16 min20 / 8No
Weekend05:37–19:5514 h 18 min20 / 8No
05:36–19:5614 h 20 min20 / 9No
05:35–19:5714 h 23 min21 / 9No
05:34–19:5914 h 25 min21 / 9No
05:33–20:0014 h 27 min21 / 9No
05:32–20:0114 h 29 min21 / 9No
Weekend05:31–20:0214 h 31 min21 / 10No
Weekend05:30–20:0314 h 33 min22 / 10No
05:29–20:0414 h 35 min22 / 10No
05:28–20:0514 h 37 min22 / 10No
05:27–20:0614 h 39 min22 / 10No
05:26–20:0714 h 41 min22 / 10No
05:25–20:0814 h 43 min22 / 11No
Weekend05:24–20:0914 h 44 min23 / 11No
Weekend05:23–20:1014 h 46 min23 / 11No
05:23–20:1014 h 48 min23 / 11No
05:22–20:1114 h 50 min23 / 11No
05:21–20:1214 h 51 min23 / 12No
05:20–20:1314 h 53 min23 / 12No
05:20–20:1414 h 54 min24 / 12No
Weekend05:19–20:1514 h 56 min24 / 12No
Weekend05:19–20:1614 h 57 min24 / 12No
Memorial Day · nationwide05:18–20:1714 h 59 min24 / 13No

June 2027 in Chicago

1991–2020 averages for June: high 27 °C, low 15 °C, 116 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 24 °C on the 1st to 28 °C on the 30th. Chicago in June

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
05:18–20:1715 h 00 min24 / 13No
05:17–20:1815 h 01 min25 / 13No
05:17–20:1915 h 02 min25 / 13No
05:16–20:2015 h 03 min25 / 13No
Weekend05:16–20:2015 h 05 min25 / 13No
Weekend05:15–20:2115 h 06 min25 / 14No
05:15–20:2215 h 07 min25 / 14No
05:15–20:2215 h 08 min26 / 14No
05:15–20:2315 h 08 min26 / 14No
05:14–20:2415 h 09 min26 / 14No
05:14–20:2415 h 10 min26 / 15No
Weekend05:14–20:2515 h 11 min26 / 15No
Weekend05:14–20:2515 h 11 min27 / 15No
05:14–20:2615 h 12 min27 / 15No
05:14–20:2615 h 12 min27 / 15No
05:14–20:2715 h 13 min27 / 15No
05:14–20:2715 h 13 min27 / 15No
Juneteenth National Independence Day (observed) · nationwide05:14–20:2715 h 13 min27 / 16No
WeekendJuneteenth National Independence Day · nationwide05:14–20:2815 h 14 min27 / 16No
Weekend05:14–20:2815 h 14 min27 / 16No
05:14–20:2815 h 14 min27 / 16No
05:15–20:2815 h 14 min27 / 16No
05:15–20:2915 h 14 min27 / 16No
05:15–20:2915 h 14 min27 / 16No
05:15–20:2915 h 14 min28 / 16No
Weekend05:16–20:2915 h 13 min28 / 16No
Weekend05:16–20:2915 h 13 min28 / 16No
05:17–20:2915 h 13 min28 / 16No
05:17–20:2915 h 12 min28 / 17No
05:17–20:2915 h 12 min28 / 17No

July 2027 in Chicago

1991–2020 averages for July: high 29 °C, low 18 °C, 102 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 28 °C on the 1st to 28 °C on the 31st. Chicago in July

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
05:18–20:2915 h 11 min28 / 17No
05:18–20:2915 h 11 min28 / 17No
Weekend05:19–20:2915 h 10 min28 / 17No
WeekendIndependence Day · nationwide05:19–20:2915 h 09 min28 / 17No
Independence Day (observed) · nationwide05:20–20:2815 h 08 min28 / 17No
05:21–20:2815 h 08 min28 / 17No
05:21–20:2815 h 07 min28 / 17No
05:22–20:2815 h 06 min28 / 17No
05:23–20:2715 h 05 min28 / 17No
Weekend05:23–20:2715 h 04 min28 / 17No
Weekend05:24–20:2615 h 02 min28 / 18No
05:25–20:2615 h 01 min29 / 18No
05:26–20:2615 h 00 min29 / 18No
05:26–20:2514 h 59 min29 / 18No
05:27–20:2414 h 57 min29 / 18No
05:28–20:2414 h 56 min29 / 18No
Weekend05:29–20:2314 h 54 min29 / 18No
Weekend05:30–20:2314 h 53 min29 / 18No
05:31–20:2214 h 51 min29 / 18No
05:31–20:2114 h 50 min29 / 18No
05:32–20:2014 h 48 min29 / 18No
05:33–20:2014 h 46 min29 / 18No
05:34–20:1914 h 45 min29 / 18No
Weekend05:35–20:1814 h 43 min29 / 18No
Weekend05:36–20:1714 h 41 min28 / 18No
05:37–20:1614 h 39 min28 / 18No
05:38–20:1514 h 37 min28 / 18No
05:39–20:1414 h 35 min28 / 18No
05:40–20:1314 h 33 min28 / 18No
05:41–20:1214 h 31 min28 / 18No
Weekend05:42–20:1114 h 29 min28 / 18No

August 2027 in Chicago

1991–2020 averages for August: high 28 °C, low 17 °C, 101 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 28 °C on the 1st to 26 °C on the 31st. Chicago in August

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
Weekend05:43–20:1014 h 27 min28 / 18No
05:44–20:0914 h 25 min28 / 18No
05:45–20:0814 h 23 min28 / 18No
05:46–20:0714 h 21 min28 / 18No
05:47–20:0614 h 19 min28 / 18No
05:48–20:0414 h 16 min28 / 18No
Weekend05:49–20:0314 h 14 min28 / 18No
Weekend05:50–20:0214 h 12 min28 / 18No
05:51–20:0114 h 10 min28 / 17No
05:52–19:5914 h 07 min28 / 17No
05:53–19:5814 h 05 min28 / 17No
05:54–19:5714 h 02 min28 / 17No
05:55–19:5514 h 00 min28 / 17No
Weekend05:56–19:5413 h 58 min28 / 17No
Weekend05:57–19:5213 h 55 min28 / 17No
05:58–19:5113 h 53 min28 / 17No
05:59–19:5013 h 50 min28 / 17No
06:00–19:4813 h 48 min28 / 17No
06:01–19:4713 h 45 min27 / 17No
06:02–19:4513 h 43 min27 / 17No
Weekend06:03–19:4413 h 40 min27 / 17No
Weekend06:05–19:4213 h 38 min27 / 17No
06:06–19:4113 h 35 min27 / 16No
06:07–19:3913 h 32 min27 / 16No
06:08–19:3713 h 30 min27 / 16No
06:09–19:3613 h 27 min27 / 16No
06:10–19:3413 h 25 min27 / 16No
Weekend06:11–19:3313 h 22 min26 / 16No
Weekend06:12–19:3113 h 19 min26 / 16No
06:13–19:2913 h 17 min26 / 15No
06:14–19:2813 h 14 min26 / 15No

September 2027 in Chicago

1991–2020 averages for September: high 24 °C, low 13 °C, 82 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 26 °C on the 1st to 21 °C on the 30th. Chicago in September

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
06:15–19:2613 h 11 min26 / 15No
06:16–19:2413 h 09 min26 / 15No
06:17–19:2313 h 06 min26 / 15No
Weekend06:18–19:2113 h 03 min26 / 15No
Weekend06:19–19:1913 h 00 min25 / 15No
Labor Day · nationwide06:20–19:1812 h 58 min25 / 14No
06:21–19:1612 h 55 min25 / 14No
06:22–19:1412 h 52 min25 / 14No
06:23–19:1212 h 50 min25 / 14No
06:24–19:1112 h 47 min25 / 14No
Weekend06:25–19:0912 h 44 min25 / 14No
Weekend06:26–19:0712 h 41 min25 / 14No
06:27–19:0512 h 39 min25 / 13No
06:28–19:0412 h 36 min24 / 13No
06:29–19:0212 h 33 min24 / 13No
06:30–19:0012 h 30 min24 / 13No
06:31–18:5812 h 27 min24 / 13No
Weekend06:32–18:5712 h 25 min24 / 13No
Weekend06:33–18:5512 h 22 min23 / 12No
06:34–18:5312 h 19 min23 / 12No
06:35–18:5112 h 16 min23 / 12No
06:36–18:5012 h 14 min23 / 12No
06:37–18:4812 h 11 min23 / 11No
06:38–18:4612 h 08 min22 / 11No
Weekend06:39–18:4412 h 05 min22 / 11No
Weekend06:40–18:4212 h 02 min22 / 11No
06:41–18:4112 h 00 min22 / 11No
06:42–18:3911 h 57 min21 / 10No
06:43–18:3711 h 54 min21 / 10No
06:44–18:3511 h 51 min21 / 10No

October 2027 in Chicago

1991–2020 averages for October: high 17 °C, low 7 °C, 86 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 21 °C on the 1st to 13 °C on the 31st. Chicago in October

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
06:45–18:3411 h 48 min21 / 10No
Weekend06:46–18:3211 h 46 min21 / 10No
Weekend06:47–18:3011 h 43 min20 / 9No
06:49–18:2911 h 40 min20 / 9No
06:50–18:2711 h 37 min20 / 9No
06:51–18:2511 h 34 min20 / 9No
06:52–18:2311 h 32 min19 / 9No
06:53–18:2211 h 29 min19 / 8No
Weekend06:54–18:2011 h 26 min19 / 8No
Weekend06:55–18:1811 h 23 min19 / 8No
Columbus Day · nationwide06:56–18:1711 h 21 min18 / 8No
06:57–18:1511 h 18 min18 / 7No
06:59–18:1411 h 15 min18 / 7No
07:00–18:1211 h 12 min18 / 7No
07:01–18:1011 h 10 min18 / 7No
Weekend07:02–18:0911 h 07 min17 / 7No
Weekend07:03–18:0711 h 04 min17 / 6No
07:04–18:0611 h 01 min17 / 6No
07:05–18:0410 h 59 min17 / 6No
07:07–18:0310 h 56 min16 / 6No
07:08–18:0110 h 53 min16 / 6No
07:09–18:0010 h 51 min16 / 5No
Weekend07:10–17:5810 h 48 min15 / 5No
Weekend07:11–17:5710 h 45 min15 / 5No
07:13–17:5510 h 43 min15 / 5No
07:14–17:5410 h 40 min15 / 5No
07:15–17:5310 h 37 min14 / 4No
07:16–17:5110 h 35 min14 / 4No
07:18–17:5010 h 32 min14 / 4No
Weekend07:19–17:4910 h 30 min14 / 4No
Weekend07:20–17:4710 h 27 min13 / 4No

November 2027 in Chicago

1991–2020 averages for November: high 9 °C, low 0 °C, 68 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 13 °C on the 1st to 6 °C on the 30th. Chicago in November

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
07:21–17:4610 h 25 min13 / 3No
07:23–17:4510 h 22 min13 / 3No
07:24–17:4310 h 20 min13 / 3No
07:25–17:4210 h 17 min12 / 3No
07:26–17:4110 h 15 min12 / 3No
Weekend07:28–17:4010 h 12 min12 / 2No
Weekend06:29–16:3910 h 10 min11 / 2No
06:30–16:3810 h 08 min11 / 2No
06:31–16:3710 h 05 min11 / 2No
06:33–16:3610 h 03 min11 / 1No
Veterans Day · nationwide06:34–16:3510 h 01 min10 / 1No
06:35–16:349 h 58 min10 / 1No
Weekend06:36–16:339 h 56 min10 / 1No
Weekend06:38–16:329 h 54 min10 / 1No
06:39–16:319 h 52 min9 / 0No
06:40–16:309 h 50 min9 / 0No
06:41–16:299 h 48 min9 / 0No
06:43–16:289 h 46 min9 / 0No
06:44–16:279 h 44 min8 / 0No
Weekend06:45–16:279 h 42 min8 / 0No
Weekend06:46–16:269 h 40 min8 / -1No
06:48–16:259 h 38 min8 / -1No
06:49–16:259 h 36 min8 / -1No
06:50–16:249 h 34 min7 / -1No
Thanksgiving Day · nationwide06:51–16:249 h 32 min7 / -1No
06:52–16:239 h 31 min7 / -1No
Weekend06:53–16:229 h 29 min7 / -2No
Weekend06:54–16:229 h 28 min7 / -2No
06:56–16:229 h 26 min6 / -2No
06:57–16:219 h 25 min6 / -2No

December 2027 in Chicago

1991–2020 averages for December: high 3 °C, low -5 °C, 55 mm of rain in the month — not a comfortable month by the measure used here. The typical high runs from 6 °C on the 1st to 1 °C on the 31st. Chicago in December

DateWeekendPublic holidaySunrise–sunsetDaylightHigh / low °CComfortable month
06:58–16:219 h 23 min6 / -2No
06:59–16:219 h 22 min6 / -3No
07:00–16:209 h 20 min6 / -3No
Weekend07:01–16:209 h 19 min5 / -3No
Weekend07:02–16:209 h 18 min5 / -3No
07:03–16:209 h 17 min5 / -3No
07:04–16:209 h 16 min5 / -3No
07:05–16:199 h 15 min5 / -4No
07:06–16:199 h 14 min4 / -4No
07:06–16:199 h 13 min4 / -4No
Weekend07:07–16:199 h 12 min4 / -4No
Weekend07:08–16:199 h 11 min4 / -4No
07:09–16:209 h 11 min3 / -4No
07:10–16:209 h 10 min3 / -5No
07:10–16:209 h 10 min3 / -5No
07:11–16:209 h 09 min3 / -5No
07:12–16:209 h 09 min3 / -5No
Weekend07:12–16:219 h 08 min3 / -5No
Weekend07:13–16:219 h 08 min3 / -5No
07:13–16:219 h 08 min2 / -5No
07:14–16:229 h 08 min2 / -5No
07:14–16:229 h 08 min2 / -6No
07:15–16:239 h 08 min2 / -6No
Christmas Day (observed) · nationwide07:15–16:239 h 08 min2 / -6No
WeekendChristmas Day · nationwide07:16–16:249 h 08 min2 / -6No
Weekend07:16–16:249 h 08 min2 / -6No
07:16–16:259 h 08 min2 / -6No
07:17–16:259 h 09 min2 / -6No
07:17–16:269 h 09 min2 / -6No
07:17–16:279 h 10 min2 / -6No
New Year's Day (observed) · nationwide07:17–16:289 h 10 min1 / -7No

Sources

How this Chicago calendar is made

The year is 2027; dates are local to Chicago (America/Chicago). The weekend column follows the weekend days for United States in python-holidays (Sat, Sun).

Public holidays: python-holidays (MIT), computed from the country's holiday rules. A regional holiday is shown when it applies in Illinois, matched by the ISO 3166-2 codes of the areas containing Chicago on Wikidata; holidays of other regions are only in the JSON file. A date marked "estimated" depends on the moon or an official announcement.

Sunrise and sunset are calculated from the coordinates with the NOAA solar equations (the sun's upper edge on a sea-level horizon, standard refraction), in local time; approximate to a few minutes, with no allowance for terrain or buildings.

Typical high and low are interpolated day by day between the 1991–2020 monthly averages (each placed at the middle of its month) — a typical value, never a forecast. A comfortable month means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).

This calendar covers the 1,500 destinations with the most places to stay in this guide (chain properties plus hotels recorded in Wikidata) that have climate data and a time zone. It has no prices, availability, occupancy, demand or crowd levels: the guide has no such data, and nothing here estimates them.

SourceUsed forLicence
OpenHolidays APISchool holidays, and public holidays for the countries it covers (type Public only)ODbL 1.0
python-holidays (vacanza/holidays)Public holidays computed from each country's holiday rules for the countries OpenHolidays does not cover; weekend daysMIT
CRU TS v4.10, Climatic Research Unit, University of East AngliaMonthly average daily high and low, 1991–2020, interpolated to typical values per dayODbL 1.0
WikidataCoordinates, and the ISO 3166-2 codes of the areas containing the destination (to match regional holidays)CC0 1.0
IANA Time Zone DatabaseLocal time zone and daylight-saving changes for sunrise and sunsetPublic domain
Chicago travel guideBest time to visit ChicagoChicago calendar 2027 (JSON)