+41.8500° · -87.6500° · ELEV 0m
Chicago
United States · Illinois
Monthly weather averages for Chicago, United States — temperature highs and lows, rainfall, sunshine hours by month, and the best time to visit.
№ 01
August → FebruaryClimate Overview
Chicago has a continental climate. The warmest month is August (25°C average high) and the coolest is January (0°C).
№ 02
983 mm / yearRainfall by Month
Chicago sees 983 mm of rain a year. The wettest month is May (115 mm); the driest is January (44 mm).
№ 03
July–SeptemberBest Time to Visit
July–September
17°C – 25°C · 10.6h sun
The best time to visit Chicago is July–September, when temperatures average 17°C–25°C with 10.6 sunshine hours per day.
Some visitors prefer May–June for cooler, drier conditions.
№ 04
12 months · °C · mm · hoursMonthly Breakdown
| January | -0.3°C | -5.2°C | 44 mm | 5.1 h | 07:15 | 16:43 |
|---|---|---|---|---|---|---|
| February | -0.1°C | -6.0°C | 60 mm | 6.7 h | 06:46 | 17:23 |
| March | 4.7°C | -1.1°C | 64 mm | 7.7 h | 07:02 | 18:56 |
| April | 9.8°C | 3.6°C | 89 mm | 8.9 h | 06:10 | 19:30 |
| May | 15.5°C | 9.3°C | 115 mm | 10.1 h | 05:30 | 20:03 |
| June | 21.6°C | 15.5°C | 114 mm | 11.4 h | 05:15 | 20:27 |
| July | 24.8°C | 19.8°C | 101 mm | 11.7 h | 05:28 | 20:24 |
| August | 25.3°C | 20.3°C | 93 mm | 10.8 h | 05:58 | 19:51 |
| September | 22.5°C | 17.1°C | 85 mm | 9.4 h | 06:30 | 19:01 |
| October | 15.8°C | 10.2°C | 114 mm | 7.2 h | 07:02 | 18:09 |
| November | 8.4°C | 3.1°C | 49 mm | 6.3 h | 06:40 | 16:30 |
| December | 3.6°C | -0.7°C | 55 mm | 5.2 h | 07:11 | 16:20 |
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Temperature, rainfall and sunshine, month by month.