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Chicago, Illinois Climate Averages

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Chicago Monthly Climate Averages

January
February
March
April
May
June
July
August
September
October
November
December
Hi 30°F Lo 21°F Hi 33°F Lo 23°F Hi 43°F Lo 33°F Hi 52°F Lo 41°F Hi 63°F Lo 51°F Hi 73°F Lo 62°F Hi 79°F Lo 68°F Hi 78°F Lo 68°F Hi 73°F Lo 62°F Hi 60°F Lo 50°F Hi 47°F Lo 38°F Hi 37°F Lo 29°F
12 mph 11 mph 11 mph 11 mph 9 mph 8 mph 8 mph 8 mph 9 mph 11 mph 12 mph 11 mph
2.6 in 2.6 in 3.6 in 5.2 in 6.2 in 6.3 in 4.7 in 4.5 in 3.8 in 4.9 in 2.4 in 2.8 in
82% 81% 75% 75% 78% 78% 77% 75% 72% 70% 71% 77%
63% 57% 51% 49% 41% 34% 31% 29% 31% 42% 43% 57%
30.1 in 30.1 in 30.1 in 30.0 in 30.0 in 29.9 in 30.0 in 30.0 in 30.0 in 30.0 in 30.1 in 30.1 in
17 16 21 21 21 20 22 23 23 23 24 22
9 8 8 9 10 10 9 8 7 8 6 7
5 5 3 1 0 0 0 0 0 0 1 2
0 0 0 0 0 0 0 0 0 0 0 0
1 2 2 3 4 5 6 6 4 2 1 1
105 121 145 147 191 226 238 247 231 182 175 125
January
February
March
April
May
June
July
August
September
October
November
December
Hi -1°C Lo -6°C Hi 1°C Lo -5°C Hi 6°C Lo 0°C Hi 11°C Lo 5°C Hi 17°C Lo 11°C Hi 23°C Lo 17°C Hi 26°C Lo 20°C Hi 26°C Lo 20°C Hi 23°C Lo 17°C Hi 16°C Lo 10°C Hi 8°C Lo 3°C Hi 3°C Lo -2°C
19 km/h 18 km/h 18 km/h 18 km/h 15 km/h 13 km/h 12 km/h 13 km/h 15 km/h 18 km/h 19 km/h 18 km/h
65 mm 67 mm 91 mm 133 mm 158 mm 161 mm 120 mm 114 mm 97 mm 123 mm 61 mm 71 mm
82% 81% 75% 75% 78% 78% 77% 75% 72% 70% 71% 77%
63% 57% 51% 49% 41% 34% 31% 29% 31% 42% 43% 57%
1019 mb 1019 mb 1018 mb 1014 mb 1015 mb 1013 mb 1015 mb 1015 mb 1017 mb 1016 mb 1019 mb 1019 mb
17 16 21 21 21 20 22 23 23 23 24 22
9 8 8 9 10 10 9 8 7 8 6 7
5 5 3 1 0 0 0 0 0 0 1 2
0 0 0 0 0 0 0 0 0 0 0 0
1 2 2 3 4 5 6 6 4 2 1 1
105 121 145 147 191 226 238 247 231 182 175 125
Month
Avg. Temperatures
Avg. Wind Speed
Avg. Precipitation
Average Humidity
Avg. Cloud Cover
Pressure Average
Average Dry Days
Avg. Precip. Days
Avg. Snow Days
Average Fog Days
Average UV Index
Avg. Hours of Sun
Averages are based on historical weather data from the past 10 years.

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