Rapid City weather by month

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

Temperature in Rapid City (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
36°F maximum daytime temperature in January in Rapid City36
39°F maximum daytime temperature in February in Rapid City39
46°F maximum daytime temperature in March in Rapid City46
57°F maximum daytime temperature in April in Rapid City57
68°F maximum daytime temperature in May in Rapid City68
77°F maximum daytime temperature in June in Rapid City77
86°F maximum daytime temperature in July in Rapid City86
84°F maximum daytime temperature in August in Rapid City84
73°F maximum daytime temperature in September in Rapid City73
63°F maximum daytime temperature in October in Rapid City63
46°F maximum daytime temperature in November in Rapid City46
37°F maximum daytime temperature in December in Rapid City37
Min temperature (night-time)
10°F minimum night-time temperature in January in Rapid City10
14°F minimum night-time temperature in February in Rapid City14
21°F minimum night-time temperature in March in Rapid City21
32°F minimum night-time temperature in April in Rapid City32
43°F minimum night-time temperature in May in Rapid City43
52°F minimum night-time temperature in June in Rapid City52
59°F minimum night-time temperature in July in Rapid City59
55°F minimum night-time temperature in August in Rapid City55
45°F minimum night-time temperature in September in Rapid City45
34°F minimum night-time temperature in October in Rapid City34
23°F minimum night-time temperature in November in Rapid City23
12°F minimum night-time temperature in December in Rapid City12
Heat & Humidity
No heat & humidity in January in Rapid City0
No heat & humidity in February in Rapid City0
No heat & humidity in March in Rapid City0
No heat & humidity in April in Rapid City0
No heat & humidity in May in Rapid City0
No heat & humidity in June in Rapid City0
Moderate heat & humidity in July in Rapid CityM
Moderate heat & humidity in August in Rapid CityM
No heat & humidity in September in Rapid City0
No heat & humidity in October in Rapid City0
No heat & humidity in November in Rapid City0
No heat & humidity in December in Rapid City0

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

Sunshine & Daylight in Rapid City

  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 Rapid City9
10 hours of daylight per day in February in Rapid City10
12 hours of daylight per day in March in Rapid City12
14 hours of daylight per day in April in Rapid City14
15 hours of daylight per day in May in Rapid City15
15 hours of daylight per day in June in Rapid City15
15 hours of daylight per day in July in Rapid City15
14 hours of daylight per day in August in Rapid City14
12 hours of daylight per day in September in Rapid City12
11 hours of daylight per day in October in Rapid City11
10 hours of daylight per day in November in Rapid City10
9 hours of daylight per day in December in Rapid City9
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Rapid City1
UV (maximum) index 2 (Low) in February in Rapid City2
UV (maximum) index 4 (Moderate) in March in Rapid City4
UV (maximum) index 5 (Moderate) in April in Rapid City5
UV (maximum) index 7 (High) in May in Rapid City7
UV (maximum) index 9 (Very High) in June in Rapid City9
UV (maximum) index 9 (Very High) in July in Rapid City9
UV (maximum) index 8 (Very High) in August in Rapid City8
UV (maximum) index 6 (High) in September in Rapid City6
UV (maximum) index 3 (Moderate) in October in Rapid City3
UV (maximum) index 2 (Low) in November in Rapid City2
UV (maximum) index 1 (Low) in December in Rapid City1

Rainfall in Rapid City

  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 Rapid City7
7 days with some rainfall in February in Rapid City7
9 days with some rainfall in March in Rapid City9
10 days with some rainfall in April in Rapid City10
12 days with some rainfall in May in Rapid City12
12 days with some rainfall in June in Rapid City12
9 days with some rainfall in July in Rapid City9
8 days with some rainfall in August in Rapid City8
7 days with some rainfall in September in Rapid City7
5 days with some rainfall in October in Rapid City5
6 days with some rainfall in November in Rapid City6
7 days with some rainfall in December in Rapid City7
Average monthly rainfall (inches)
0.3 inches monthly rainfall in January in Rapid City0.3
0.5 inches monthly rainfall in February in Rapid City0.5
0.9 inches monthly rainfall in March in Rapid City0.9
2.0 inches monthly rainfall in April in Rapid City2.0
3.1 inches monthly rainfall in May in Rapid City3.1
3.1 inches monthly rainfall in June in Rapid City3.1
2.4 inches monthly rainfall in July in Rapid City2.4
1.9 inches monthly rainfall in August in Rapid City1.9
1.2 inches monthly rainfall in September in Rapid City1.2
1.0 inches monthly rainfall in October in Rapid City1.0
0.4 inches monthly rainfall in November in Rapid City0.4
0.4 inches monthly rainfall in December in Rapid City0.4

More about Rapid City

Rapid City by month

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

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The climate guide for South Dakota (Rapid City) 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.

What's the climate like in Rapid City?

Rapid City has a cold semi arid climate with hot summers.

Metric (°C)  |  Imperial (°F)

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More about the USA

Compare Rapid City with the USA

Below the Rapid City chart shows average maximum daytime temperature for Rapid City, South Dakota, USA and the USA (Washington).

Maximum daytime temperature (°F)

Rapid City, South Dakota, USA
USA (Washington)
36
41
39
45
46
55
57
66
68
75
77
84
86
88
84
86
73
79
63
68
46
57
37
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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