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The tables below display average monthly climate and weather indicators in Rapid City South Dakota.
Temperature by: Fahrenheit / Centigrade
| Rapid City Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Avg. Temperature |
22.3 |
26.7 |
34.1 |
45.1 |
55.2 |
64.8 |
72.2 |
70.6 |
60.0 |
48.7 |
34.8 |
24.2 |
46.6 |
| Avg. Max Temperature |
33.8 |
38.2 |
45.9 |
57.9 |
68.1 |
77.8 |
86.2 |
85.1 |
74.4 |
62.5 |
46.7 |
35.6 |
59.4 |
| Avg. Min Temperature |
10.7 |
15.2 |
22.2 |
32.2 |
42.3 |
51.7 |
58.2 |
56.1 |
45.5 |
34.9 |
22.8 |
12.7 |
33.7 |
| Days with Max Temp of 90 F or Higher |
0.0 |
0.0 |
0.0 |
< 0.5 |
0.0 |
3.0 |
11.0 |
12.0 |
4.0 |
< 0.5 |
0.0 |
0.0 |
30.0 |
| Days with Min Temp Below Freezing |
30.0 |
27.0 |
27.0 |
15.0 |
3.0 |
< 0.5 |
0.0 |
0.0 |
2.0 |
10.0 |
25.0 |
30.0 |
169 |
| | |
| Rapid City Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Heating Degree Days |
1324 |
1072 |
958 |
597 |
311 |
103 |
18.0 |
31.0 |
211 |
505 |
906 |
1265 |
7301 |
| Cooling Degree Days |
0.0 |
0.0 |
0.0 |
0.0 |
7.0 |
97.0 |
241 |
205 |
61.0 |
0.0 |
0.0 |
0.0 |
611 |
| | |
| Rapid City Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Precipitation (inches) |
0.4 |
0.5 |
1.0 |
1.9 |
2.7 |
3.1 |
2.0 |
1.7 |
1.2 |
1.1 |
0.6 |
0.5 |
16.6 |
| Days with Precipitation 0.01 inch or More |
7.0 |
7.0 |
9.0 |
10.0 |
12.0 |
12.0 |
9.0 |
8.0 |
6.0 |
5.0 |
6.0 |
6.0 |
97.0 |
| Monthly Snowfall (inches) |
5.3 |
6.5 |
8.8 |
6.3 |
0.8 |
0.1 |
< 0.05 |
< 0.05 |
0.1 |
1.7 |
5.3 |
4.9 |
39.8 |
| | |
| Other Rapid City Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Average Wind Speed |
10.7 |
11.1 |
12.6 |
13.1 |
12.2 |
10.9 |
10.1 |
10.2 |
11.0 |
11.2 |
10.8 |
10.5 |
11.2 |
| Clear Days |
8.0 |
6.0 |
6.0 |
6.0 |
7.0 |
9.0 |
13.0 |
14.0 |
13.0 |
12.0 |
8.0 |
8.0 |
111 |
| Partly Cloudy Days |
8.0 |
8.0 |
9.0 |
10.0 |
11.0 |
11.0 |
13.0 |
12.0 |
9.0 |
8.0 |
8.0 |
8.0 |
115 |
| Cloudy Days |
15.0 |
14.0 |
15.0 |
15.0 |
13.0 |
10.0 |
5.0 |
5.0 |
8.0 |
11.0 |
14.0 |
14.0 |
139 |
| Percent of Possible Sunshine |
57.0 |
60.0 |
63.0 |
62.0 |
60.0 |
65.0 |
73.0 |
74.0 |
70.0 |
66.0 |
55.0 |
55.0 |
63.0 |
| Avg. Relative Humidity |
58.0 |
68.0 |
67.5 |
63.0 |
60.5 |
63.0 |
61.5 |
56.5 |
52.5 |
53.0 |
58.0 |
64.5 |
68.5 |
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