Chicago, Illinois Climate & Temperature
- Chicago, Illinois, Usa is at 41°46'N, 87°45'W, 186 m (610 ft). See map.
- Chicago, Illinois has a humid continental climate with severe winters, no dry season, hot summers and strong seasonality (Köppen-Geiger classification: Dfa).
- According to the Holdridge life zones system of bioclimatic classification Chicago, Illinois is situated in or near the cool temperate moist forest biome.
- The mean annual temperature is 10.5 degrees Celsius (50.8 degrees Fahrenheit). See the temperatures page for a monthly breakdown and the fixed scale graph.
- Average monthly temperatures vary by 27.5 °C (49.5°F). This indicates that the continentality type is continental, subtype subcontinental.
- In the winter time records indicate temperatures by day reach 1.7°C (35°F) on average falling to -6°C (21.2°F) overnight.
- In spring time temperatures climb reaching 13.7°C (56.6°F) generally in the afternoon with overnight lows of 4.7°C (40.4°F).
- During summer average high temperatures are 27.7°C (81.8°F) and average low temperatures are 18.3°C (65°F).
- Come autumn/ fall temperatures decrease achieving average highs of 16.3°C (61.4°F) during the day and lows of 7.3°C (45.2°F) generally shortly after sunrise.
- Total annual Precipitation averages 843 mm (33.2 inches) which is equivalent to 843 Litres/m² (20.68 Gallons/ft²).
- On average there are 2565 hours of sunshine per year. Visit the sunshine and daylight section to check monthly details including how high in the sky the sun reaches each month.
- Were you to burrow down through the centre of the Earth from Chicago, Illinois you would pop up nearest to the climate station at Amsterdam Island, French Southern Lands where you would find a Marine west coast climate.
Chicago, Illinois Climate Table
| Climate Variable | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average Max Temperature °C ( °F) | 1 (34) | 2 (36) | 6 (43) | 14 (57) | 21 (70) | 26 (79) | 29 (84) | 28 (82) | 24 (75) | 17 (63) | 8 (46) | 2 (36) | 15 (59) | ||
| Average Temperature °C ( °F) | -3 (27) | -2 (28) | 2 (36) | 10 (49) | 16 (61) | 21 (70) | 25 (76) | 24 (74) | 19 (66) | 13 (55) | 4 (39) | -2 (29) | 10 (51) | ||
| Average Min Temperature °C ( °F) | -7 (19) | -6 (21) | -2 (28) | 5 (41) | 11 (52) | 16 (61) | 20 (68) | 19 (66) | 14 (57) | 8 (46) | 0 (32) | -5 (23) | 6 (43) | ||
| Average Precipitation mm (in) | 47 (2) | 41 (2) | 70 (3) | 77 (3) | 95 (4) | 103 (4) | 86 (3) | 80 (3) | 69 (3) | 71 (3) | 56 (2) | 48 (2) | 843 (33) | ||
| Number of Wet Days (probability of rain on a day %) | 10 (32) | 10 (35) | 12 (39) | 12 (40) | 13 (42) | 11 (37) | 9 (29) | 9 (29) | 8 (27) | 8 (26) | 10 (33) | 10 (32) | 122 (33) | ||
| Average Sunlight Hours/ Day | 4h 01' | 4h 59' | 6h 38' | 6h 52' | 8h 52' | 10h 14' | 10h 00' | 9h 11' | 8h 12' | 6h 54' | 4h 30' | 3h 42' | 7h 01' | ||
| Average Daylight Hours/ Day | 9h 30' | 10h 31' | 11h 52' | 13h 18' | 14h 31' | 15h 09' | 14h 52' | 13h 49' | 12h 26' | 11h 00' | 9h 47' | 9h 11' | 12h 00' | ||
| Percentage of Sunny (Cloudy) Daylight Hours | 43 (57) | 48 (52) | 57 (43) | 52 (48) | 62 (38) | 68 (32) | 68 (32) | 67 (33) | 67 (33) | 64 (36) | 47 (53) | 41 (59) | 59 (41) | ||
| Sun altitude at solar noon on the 21st day (°). | 28.4 | 37.8 | 48.6 | 60.2 | 68.5 | 71.7 | 68.6 | 60.2 | 48.7 | 37.3 | 28.2 | 24.8 | 48.5 |
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