South Dakota weather by month

Check out South Dakota weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °C
-4°C maximum daytime temperature in January in Sioux Falls-4
-1°C maximum daytime temperature in February in Sioux Falls-1
6°C maximum daytime temperature in March in Sioux Falls6
15°C maximum daytime temperature in April in Sioux Falls15
22°C maximum daytime temperature in May in Sioux Falls22
27°C maximum daytime temperature in June in Sioux Falls27
30°C maximum daytime temperature in July in Sioux Falls30
29°C maximum daytime temperature in August in Sioux Falls29
23°C maximum daytime temperature in September in Sioux Falls23
16°C maximum daytime temperature in October in Sioux Falls16
6°C maximum daytime temperature in November in Sioux Falls6
-2°C maximum daytime temperature in December in Sioux Falls-2
Hours of sunshine (daily)
Days with some rainfall
7 days with some rainfall in January in Sioux Falls7
7 days with some rainfall in February in Sioux Falls7
9 days with some rainfall in March in Sioux Falls9
10 days with some rainfall in April in Sioux Falls10
11 days with some rainfall in May in Sioux Falls11
11 days with some rainfall in June in Sioux Falls11
10 days with some rainfall in July in Sioux Falls10
9 days with some rainfall in August in Sioux Falls9
8 days with some rainfall in September in Sioux Falls8
6 days with some rainfall in October in Sioux Falls6
7 days with some rainfall in November in Sioux Falls7
6 days with some rainfall in December in Sioux Falls6

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South Dakota by month

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

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The climate guide for South Dakota (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.

Top South Dakota destinations

Below are average maximum temperatures at popular countries, regions and places in South Dakota for next month - February. Select a destination to see the climate guide for all months of the year.

All South Dakota destinations

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

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South Dakota weather averages

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
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

Sunshine & UV index in South Dakota

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
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
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

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

Compare South Dakota weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for South Dakota, USA (Sioux Falls) and the UK (London).

Maximum daytime temperature (°C)

South Dakota, USA (Sioux Falls)
UK (London)
7
7
6
10
15
13
22
17
27
20
30
22
29
22
23
19
16
15
6
10
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
-4
-1
-2

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

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