South Dakota climate guide

Temperature in South Dakota (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
-4°C maximum daytime temperature in January in South Dakota (Sioux Falls)-4
-1°C maximum daytime temperature in February in South Dakota (Sioux Falls)-1
6°C maximum daytime temperature in March in South Dakota (Sioux Falls)6
15°C maximum daytime temperature in April in South Dakota (Sioux Falls)15
22°C maximum daytime temperature in May in South Dakota (Sioux Falls)22
27°C maximum daytime temperature in June in South Dakota (Sioux Falls)27
30°C maximum daytime temperature in July in South Dakota (Sioux Falls)30
29°C maximum daytime temperature in August in South Dakota (Sioux Falls)29
23°C maximum daytime temperature in September in South Dakota (Sioux Falls)23
16°C maximum daytime temperature in October in South Dakota (Sioux Falls)16
6°C maximum daytime temperature in November in South Dakota (Sioux Falls)6
-2°C maximum daytime temperature in December in South Dakota (Sioux Falls)-2
Min temperature (night-time)
-16°C minimum night-time temperature in January in South Dakota (Sioux Falls)-16
-13°C minimum night-time temperature in February in South Dakota (Sioux Falls)-13
-5°C minimum night-time temperature in March in South Dakota (Sioux Falls)-5
1°C minimum night-time temperature in April in South Dakota (Sioux Falls)1
8°C minimum night-time temperature in May in South Dakota (Sioux Falls)8
13°C minimum night-time temperature in June in South Dakota (Sioux Falls)13
17°C minimum night-time temperature in July in South Dakota (Sioux Falls)17
15°C minimum night-time temperature in August in South Dakota (Sioux Falls)15
9°C minimum night-time temperature in September in South Dakota (Sioux Falls)9
2°C minimum night-time temperature in October in South Dakota (Sioux Falls)2
-5°C minimum night-time temperature in November in South Dakota (Sioux Falls)-5
-13°C minimum night-time temperature in December in South Dakota (Sioux Falls)-13

Sunshine & Daylight in South Dakota

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
6 hours of sunshine per day (60% of daylight hours) in January in South Dakota6
6 hours of sunshine per day (59% of daylight hours) in February in South Dakota6
7 hours of sunshine per day (59% of daylight hours) in March in South Dakota7
8 hours of sunshine per day (59% of daylight hours) in April in South Dakota8
9 hours of sunshine per day (62% of daylight hours) in May in South Dakota9
11 hours of sunshine per day (69% of daylight hours) in June in South Dakota11
11 hours of sunshine per day (74% of daylight hours) in July in South Dakota11
10 hours of sunshine per day (71% of daylight hours) in August in South Dakota10
8 hours of sunshine per day (64% of daylight hours) in September in South Dakota8
7 hours of sunshine per day (60% of daylight hours) in October in South Dakota7
5 hours of sunshine per day (49% of daylight hours) in November in South Dakota5
4 hours of sunshine per day (49% of daylight hours) in December in South Dakota4
Daily hours of daylight
9 hours of daylight per day in January in South Dakota (Sioux Falls)9
11 hours of daylight per day in February in South Dakota (Sioux Falls)11
12 hours of daylight per day in March in South Dakota (Sioux Falls)12
13 hours of daylight per day in April in South Dakota (Sioux Falls)13
15 hours of daylight per day in May in South Dakota (Sioux Falls)15
15 hours of daylight per day in June in South Dakota (Sioux Falls)15
15 hours of daylight per day in July in South Dakota (Sioux Falls)15
14 hours of daylight per day in August in South Dakota (Sioux Falls)14
12 hours of daylight per day in September in South Dakota (Sioux Falls)12
11 hours of daylight per day in October in South Dakota (Sioux Falls)11
10 hours of daylight per day in November in South Dakota (Sioux Falls)10
9 hours of daylight per day in December in South Dakota (Sioux Falls)9

Rainfall in South Dakota

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
7 days with some rainfall in January in South Dakota (Sioux Falls)7
7 days with some rainfall in February in South Dakota (Sioux Falls)7
9 days with some rainfall in March in South Dakota (Sioux Falls)9
10 days with some rainfall in April in South Dakota (Sioux Falls)10
11 days with some rainfall in May in South Dakota (Sioux Falls)11
11 days with some rainfall in June in South Dakota (Sioux Falls)11
10 days with some rainfall in July in South Dakota (Sioux Falls)10
9 days with some rainfall in August in South Dakota (Sioux Falls)9
8 days with some rainfall in September in South Dakota (Sioux Falls)8
6 days with some rainfall in October in South Dakota (Sioux Falls)6
7 days with some rainfall in November in South Dakota (Sioux Falls)7
6 days with some rainfall in December in South Dakota (Sioux Falls)6
Average monthly rainfall (mm)
13 mm monthly rainfall in January in South Dakota (Sioux Falls)13
17 mm monthly rainfall in February in South Dakota (Sioux Falls)17
41 mm monthly rainfall in March in South Dakota (Sioux Falls)41
63 mm monthly rainfall in April in South Dakota (Sioux Falls)63
79 mm monthly rainfall in May in South Dakota (Sioux Falls)79
92 mm monthly rainfall in June in South Dakota (Sioux Falls)92
71 mm monthly rainfall in July in South Dakota (Sioux Falls)71
74 mm monthly rainfall in August in South Dakota (Sioux Falls)74
74 mm monthly rainfall in September in South Dakota (Sioux Falls)74
43 mm monthly rainfall in October in South Dakota (Sioux Falls)43
27 mm monthly rainfall in November in South Dakota (Sioux Falls)27
17 mm monthly rainfall in December in South Dakota (Sioux Falls)17

More climate for South Dakota

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in South Dakota (Sioux Falls)1
UV (maximum) index 2 (Low) in February in South Dakota (Sioux Falls)2
UV (maximum) index 4 (Moderate) in March in South Dakota (Sioux Falls)4
UV (maximum) index 5 (Moderate) in April in South Dakota (Sioux Falls)5
UV (maximum) index 7 (High) in May in South Dakota (Sioux Falls)7
UV (maximum) index 8 (Very High) in June in South Dakota (Sioux Falls)8
UV (maximum) index 9 (Very High) in July in South Dakota (Sioux Falls)9
UV (maximum) index 8 (Very High) in August in South Dakota (Sioux Falls)8
UV (maximum) index 6 (High) in September in South Dakota (Sioux Falls)6
UV (maximum) index 3 (Moderate) in October in South Dakota (Sioux Falls)3
UV (maximum) index 2 (Low) in November in South Dakota (Sioux Falls)2
UV (maximum) index 1 (Low) in December in South Dakota (Sioux Falls)1
Heat & Humidity
No heat & humidity in January in South Dakota (Sioux Falls)0
No heat & humidity in February in South Dakota (Sioux Falls)0
No heat & humidity in March in South Dakota (Sioux Falls)0
No heat & humidity in April in South Dakota (Sioux Falls)0
No heat & humidity in May in South Dakota (Sioux Falls)0
Low heat & humidity in June in South Dakota (Sioux Falls)L
Moderate heat & humidity in July in South Dakota (Sioux Falls)M
Moderate heat & humidity in August in South Dakota (Sioux Falls)M
No heat & humidity in September in South Dakota (Sioux Falls)0
No heat & humidity in October in South Dakota (Sioux Falls)0
No heat & humidity in November in South Dakota (Sioux Falls)0
No heat & humidity in December in South Dakota (Sioux Falls)0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Going to South Dakota? Find the best month to visit South Dakota based on the weather.

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Check climate guides for South Dakota showing average temperature, rainfall & sunshine figures for each month of the year. The climate guide shown above is for Sioux Falls.

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More about South Dakota

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The climate guide for South Dakota, represented by Sioux Falls, shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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