Chicago Climate (Weather Averages)

The Climate Guide for Chicago, Illinois is perfect for planning your holiday. Monthly weather averages give the best indication of what the weather is usually like for every month of the year including figures for temperature, rainfall and sunshine.

Chicago Weather Illinois Summary Chicago Climate Chicago Today Chicago Forecast Chicago When Best
Chicago Weather Illinois Summary Chicago Climate Chicago Today Chicago Forecast Chicago When Best
J F M A M J J A S O N D
Max Daytime Temperature (°C) -1°C (30°F) Max Daytime Temperature in January in Chicago 2°C (36°F) Max Daytime Temperature in February in Chicago 7°C (45°F) Max Daytime Temperature in March in Chicago 15°C (59°F) Max Daytime Temperature in April in Chicago 21°C (70°F) Max Daytime Temperature in May in Chicago 27°C (81°F) Max Daytime Temperature in June in Chicago 29°C (84°F) Max Daytime Temperature in July in Chicago 28°C (82°F) Max Daytime Temperature in August in Chicago 24°C (75°F) Max Daytime Temperature in September in Chicago 18°C (64°F) Max Daytime Temperature in October in Chicago 9°C (48°F) Max Daytime Temperature in November in Chicago 2°C (36°F) Max Daytime Temperature in December in Chicago
Min Night-time Temperature (°C) -9°C (16°F) Min Night-time Temperature in January in Chicago -7°C (19°F) Min Night-time Temperature in February in Chicago -1°C (30°F) Min Night-time Temperature in March in Chicago 4°C (39°F) Min Night-time Temperature in April in Chicago 10°C (50°F) Min Night-time Temperature in May in Chicago 15°C (59°F) Min Night-time Temperature in June in Chicago 18°C (64°F) Min Night-time Temperature in July in Chicago 18°C (64°F) Min Night-time Temperature in August in Chicago 13°C (55°F) Min Night-time Temperature in September in Chicago 7°C (45°F) Min Night-time Temperature in October in Chicago 1°C (34°F) Min Night-time Temperature in November in Chicago -6°C (21°F) Min Night-time Temperature in December in Chicago
Hours of Sunshine (Daily) 4 Hours of Bright Sunshine per day (45% of Daylight Hours) in January in Chicago 5 Hours of Bright Sunshine per day (46% of Daylight Hours) in February in Chicago 6 Hours of Bright Sunshine per day (50% of Daylight Hours) in March in Chicago 7 Hours of Bright Sunshine per day (55% of Daylight Hours) in April in Chicago 9 Hours of Bright Sunshine per day (62% of Daylight Hours) in May in Chicago 10 Hours of Bright Sunshine per day (68% of Daylight Hours) in June in Chicago 10 Hours of Bright Sunshine per day (69% of Daylight Hours) in July in Chicago 9 Hours of Bright Sunshine per day (67% of Daylight Hours) in August in Chicago 8 Hours of Bright Sunshine per day (61% of Daylight Hours) in September in Chicago 6 Hours of Bright Sunshine per day (56% of Daylight Hours) in October in Chicago 4 Hours of Bright Sunshine per day (39% of Daylight Hours) in November in Chicago 3 Hours of Bright Sunshine per day (37% of Daylight Hours) in December in Chicago
Hours of Daylight (Daily) 10 Hours of Daylight in January in Chicago 11 Hours of Daylight in February in Chicago 12 Hours of Daylight in March in Chicago 13 Hours of Daylight in April in Chicago 15 Hours of Daylight in May in Chicago 15 Hours of Daylight in June in Chicago 15 Hours of Daylight in July in Chicago 14 Hours of Daylight in August in Chicago 12 Hours of Daylight in September in Chicago 11 Hours of Daylight in October in Chicago 10 Hours of Daylight in November in Chicago 9 Hours of Daylight in December in Chicago
Heat and Humidity Discomfort No Heat & Humidity in January in Chicago No Heat & Humidity in February in Chicago No Heat & Humidity in March in Chicago No Heat & Humidity in April in Chicago No Heat & Humidity in May in Chicago Low Heat & Humidity in June in Chicago Moderate Heat & Humidity in July in Chicago Moderate Heat & Humidity in August in Chicago No Heat & Humidity in September in Chicago No Heat & Humidity in October in Chicago No Heat & Humidity in November in Chicago No Heat & Humidity in December in Chicago
Days with some Rainfall 12 Days with some Rainfall in January in Chicago 10 Days with some Rainfall in February in Chicago 13 Days with some Rainfall in March in Chicago 13 Days with some Rainfall in April in Chicago 11 Days with some Rainfall in May in Chicago 10 Days with some Rainfall in June in Chicago 10 Days with some Rainfall in July in Chicago 9 Days with some Rainfall in August in Chicago 9 Days with some Rainfall in September in Chicago 9 Days with some Rainfall in October in Chicago 11 Days with some Rainfall in November in Chicago 12 Days with some Rainfall in December in Chicago
Monthly Rainfall (mm) 44 mm (1.7 inches) Monthly Rainfall in January in Chicago 38 mm (1.5 inches) Monthly Rainfall in February in Chicago 69 mm (2.7 inches) Monthly Rainfall in March in Chicago 96 mm (3.8 inches) Monthly Rainfall in April in Chicago 87 mm (3.4 inches) Monthly Rainfall in May in Chicago 98 mm (3.9 inches) Monthly Rainfall in June in Chicago 100 mm (3.9 inches) Monthly Rainfall in July in Chicago 100 mm (3.9 inches) Monthly Rainfall in August in Chicago 90 mm (3.5 inches) Monthly Rainfall in September in Chicago 64 mm (2.5 inches) Monthly Rainfall in October in Chicago 74 mm (2.9 inches) Monthly Rainfall in November in Chicago 66 mm (2.6 inches) Monthly Rainfall in December in Chicago
UV Index (Maximum) UV (Maximum) Index 1 (Low) in January in Chicago UV (Maximum) Index 2 (Low) in February in Chicago UV (Maximum) Index 4 (Moderate) in March in Chicago UV (Maximum) Index 6 (High) in April in Chicago UV (Maximum) Index 7 (High) in May in Chicago UV (Maximum) Index 9 (Very High) in June in Chicago UV (Maximum) Index 9 (Very High) in July in Chicago UV (Maximum) Index 8 (Very High) in August in Chicago UV (Maximum) Index 6 (High) in September in Chicago UV (Maximum) Index 4 (Moderate) in October in Chicago UV (Maximum) Index 2 (Low) in November in Chicago UV (Maximum) Index 1 (Low) in December in Chicago
Sea Temperature (°C) 4°C (39°F) Sea Temperature in January in Chicago 3°C (37°F) Sea Temperature in February in Chicago 3°C (37°F) Sea Temperature in March in Chicago 3°C (37°F) Sea Temperature in April in Chicago 6°C (43°F) Sea Temperature in May in Chicago 12°C (54°F) Sea Temperature in June in Chicago 19°C (66°F) Sea Temperature in July in Chicago 21°C (70°F) Sea Temperature in August in Chicago 19°C (66°F) Sea Temperature in September in Chicago 14°C (57°F) Sea Temperature in October in Chicago 9°C (48°F) Sea Temperature in November in Chicago 5°C (41°F) Sea Temperature in December in Chicago
J F M A M J J A S O N D
 		    
 

Chicago Climate Zone

Chicago has a cold climate with hot summers and some rainfall in all months.
Chicago Holidays Chicago Flights Chicago Hotels Chicago Hire Cars Chicago Villas Chicago Transfers
Chicago Holidays Chicago Flights Chicago Hotels Chicago Hire Cars Chicago Villas Chicago Transfers

  Champaign   Decatur   Galena   Marion   Springfield  

Chicago Weather by Month
Check the weather for a particular month in Chicago by selecting a month from the list below. Alternatively check which month usually has the Best Weather in Chicago. If you are not sure where to go, why not try our Holiday Planner.
  · January
  · February
  · March
   · April
  · May
  · June
   · July
  · August
  · September
   · October
  · November
  · December
Popular Climate Guide Regions

1.

Cyprus

2.

Tenerife, Canary Islands, Spain

3.

Tunisia

4.

Sharm el-Sheikh, Egypt

5.

Mauritius

6.

Crete, Greece

7.

Dalaman and Marmaris Coast, Turkey

8.

Cape Verde

9.

Rhodes, Greece

10.

Antalya Coast, Turkey
Popular Climate Guide Destinations

1.

Santa Cruz de Tenerife, Tenerife, Canary Islands, Spain

2.

Nicosia, Cyprus

3.

Sharm el Sheikh Airport, Sharm el-Sheikh, Egypt

4.

Tunis, Tunisia

5.

Port Louis, Mauritius

6.

Khania, Crete, Greece

7.

Dalaman, Dalaman and Marmaris Coast, Turkey

8.

Praia, Santiago, Cape Verde

9.

Rhodes Town, Rhodes, Greece

10.

Antalya, Antalya Coast, Turkey
 		    
 
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