Chicago, USA: Annual Weather Averages
July is the hottest month in Chicago with an average temperature of 23°C (73°F) and the coldest is January at -6°C (21°F) with the most daily sunshine hours at 12 in July. The wettest month is July with an average of 100mm of rain..
Average Temperature: Chicago
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | -6 | -4 | 3 | 10 | 15 | 21 | 23 | 22 | 18 | 12 | 5 | -3 |
| °F | 21 | 25 | 37 | 50 | 59 | 70 | 73 | 72 | 64 | 54 | 41 | 27 |
Average High/Low Temperature: Chicago
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | -1 | 1 | 8 | 15 | 21 | 27 | 29 | 28 | 24 | 17 | 9 | 2 |
| Low °C | -11 | -8 | -2 | 4 | 9 | 14 | 17 | 16 | 12 | 6 | 0 | -8 |
| High °F | 30 | 34 | 46 | 59 | 70 | 81 | 84 | 82 | 75 | 63 | 48 | 36 |
| Low °F | 12 | 18 | 28 | 39 | 48 | 57 | 63 | 61 | 54 | 43 | 32 | 18 |
Average Day/Night Temperature: Chicago
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day °C | -3 | -1 | 4 | 10 | 17 | 23 | 26 | 25 | 22 | 14 | 6 | 2 |
| Night °C | -4 | -3 | 2 | 8 | 15 | 20 | 24 | 22 | 20 | 12 | 4 | 0 |
| Day °F | 27 | 30 | 40 | 50 | 63 | 73 | 79 | 77 | 72 | 58 | 43 | 35 |
| Night °F | 24 | 27 | 36 | 46 | 58 | 69 | 74 | 72 | 67 | 54 | 40 | 33 |
Average Rainfall: Chicago
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 43 | 38 | 67 | 97 | 88 | 99 | 100 | 96 | 90 | 68 | 74 | 63 |
| Days | 8 | 7 | 13 | 12 | 17 | 12 | 12 | 13 | 10 | 13 | 14 | 9 |
Average Daily Sunshine Hours: Chicago
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 3 | 3 | 6 | 7 | 9 | 10 | 12 | 11 | 9 | 7 | 6 | 3 |
