Sioux City Climate

   
 
 

The Climate Guide for Sioux City, Iowa 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.

J F M A M J J A S O N D
Max Daytime Temperature (°C) -2°C (28°F) Max Daytime Temperature in January in Sioux City 1°C (34°F) Max Daytime Temperature in February in Sioux City 8°C (46°F) Max Daytime Temperature in March in Sioux City 17°C (63°F) Max Daytime Temperature in April in Sioux City 23°C (73°F) Max Daytime Temperature in May in Sioux City 28°C (82°F) Max Daytime Temperature in June in Sioux City 30°C (86°F) Max Daytime Temperature in July in Sioux City 29°C (84°F) Max Daytime Temperature in August in Sioux City 25°C (77°F) Max Daytime Temperature in September in Sioux City 18°C (64°F) Max Daytime Temperature in October in Sioux City 8°C (46°F) Max Daytime Temperature in November in Sioux City 0°C (32°F) Max Daytime Temperature in December in Sioux City
Min Night-time Temperature (°C) -13°C (9°F) Min Night-time Temperature in January in Sioux City -10°C (14°F) Min Night-time Temperature in February in Sioux City -4°C (25°F) Min Night-time Temperature in March in Sioux City 3°C (37°F) Min Night-time Temperature in April in Sioux City 9°C (48°F) Min Night-time Temperature in May in Sioux City 15°C (59°F) Min Night-time Temperature in June in Sioux City 17°C (63°F) Min Night-time Temperature in July in Sioux City 16°C (61°F) Min Night-time Temperature in August in Sioux City 10°C (50°F) Min Night-time Temperature in September in Sioux City 4°C (39°F) Min Night-time Temperature in October in Sioux City -4°C (25°F) Min Night-time Temperature in November in Sioux City -10°C (14°F) Min Night-time Temperature in December in Sioux City
Hours of Sunshine (Daily) 6 Hours of Bright Sunshine per day (59% of Daylight Hours) in January in Sioux City 6 Hours of Bright Sunshine per day (56% of Daylight Hours) in February in Sioux City 7 Hours of Bright Sunshine per day (58% of Daylight Hours) in March in Sioux City 8 Hours of Bright Sunshine per day (58% of Daylight Hours) in April in Sioux City 9 Hours of Bright Sunshine per day (60% of Daylight Hours) in May in Sioux City 10 Hours of Bright Sunshine per day (68% of Daylight Hours) in June in Sioux City 11 Hours of Bright Sunshine per day (72% of Daylight Hours) in July in Sioux City 10 Hours of Bright Sunshine per day (69% of Daylight Hours) in August in Sioux City 8 Hours of Bright Sunshine per day (63% of Daylight Hours) in September in Sioux City 7 Hours of Bright Sunshine per day (61% of Daylight Hours) in October in Sioux City 5 Hours of Bright Sunshine per day (49% of Daylight Hours) in November in Sioux City 5 Hours of Bright Sunshine per day (49% of Daylight Hours) in December in Sioux City
Hours of Daylight (Daily) 9 Hours of Daylight in January in Sioux City 11 Hours of Daylight in February in Sioux City 12 Hours of Daylight in March in Sioux City 13 Hours of Daylight in April in Sioux City 15 Hours of Daylight in May in Sioux City 15 Hours of Daylight in June in Sioux City 15 Hours of Daylight in July in Sioux City 14 Hours of Daylight in August in Sioux City 12 Hours of Daylight in September in Sioux City 11 Hours of Daylight in October in Sioux City 10 Hours of Daylight in November in Sioux City 9 Hours of Daylight in December in Sioux City
Heat and Humidity Discomfort No heat & humidity in January in Sioux City No heat & humidity in February in Sioux City No heat & humidity in March in Sioux City No heat & humidity in April in Sioux City No heat & humidity in May in Sioux City Moderate heat & humidity in June in Sioux City Moderate heat & humidity in July in Sioux City Moderate heat & humidity in August in Sioux City No heat & humidity in September in Sioux City No heat & humidity in October in Sioux City No heat & humidity in November in Sioux City No heat & humidity in December in Sioux City
Days with some Rainfall 7 Days with some Rainfall in January in Sioux City 6 Days with some Rainfall in February in Sioux City 9 Days with some Rainfall in March in Sioux City 10 Days with some Rainfall in April in Sioux City 11 Days with some Rainfall in May in Sioux City 10 Days with some Rainfall in June in Sioux City 9 Days with some Rainfall in July in Sioux City 9 Days with some Rainfall in August in Sioux City 9 Days with some Rainfall in September in Sioux City 7 Days with some Rainfall in October in Sioux City 6 Days with some Rainfall in November in Sioux City 7 Days with some Rainfall in December in Sioux City
Monthly Rainfall (mm) 14 mm (0.6 inches) Monthly Rainfall in January in Sioux City 19 mm (0.7 inches) Monthly Rainfall in February in Sioux City 50 mm (2.0 inches) Monthly Rainfall in March in Sioux City 64 mm (2.5 inches) Monthly Rainfall in April in Sioux City 96 mm (3.8 inches) Monthly Rainfall in May in Sioux City 104 mm (4.1 inches) Monthly Rainfall in June in Sioux City 85 mm (3.3 inches) Monthly Rainfall in July in Sioux City 78 mm (3.1 inches) Monthly Rainfall in August in Sioux City 71 mm (2.8 inches) Monthly Rainfall in September in Sioux City 50 mm (2.0 inches) Monthly Rainfall in October in Sioux City 29 mm (1.1 inches) Monthly Rainfall in November in Sioux City 20 mm (0.8 inches) Monthly Rainfall in December in Sioux City
UV Index (Maximum) UV (Maximum) Index 1 (Low) in January in Sioux City UV (Maximum) Index 2 (Low) in February in Sioux City UV (Maximum) Index 4 (Moderate) in March in Sioux City UV (Maximum) Index 6 (High) in April in Sioux City UV (Maximum) Index 7 (High) in May in Sioux City UV (Maximum) Index 9 (Very High) in June in Sioux City UV (Maximum) Index 9 (Very High) in July in Sioux City UV (Maximum) Index 8 (Very High) in August in Sioux City UV (Maximum) Index 6 (High) in September in Sioux City UV (Maximum) Index 4 (Moderate) in October in Sioux City UV (Maximum) Index 2 (Low) in November in Sioux City UV (Maximum) Index 1 (Low) in December in Sioux City
J F M A M J J A S O N D
Metric (°C)  |  Imperial (°F) 

Sioux City Climate Zone

Sioux City has a cold climate with hot summers and some rainfall in all months.

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Sioux City weather by month

Check the weather for a particular month in Sioux City by selecting a month from the list below. Alternatively check which month usually has the Best Weather in Sioux City. If you are not sure where to go, why not try our Holiday Planner.

   
 
 

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