| Climate data for Rapid City, South Dakota |
| Month |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Year |
| Record high deg F (deg C) |
76
(24.4) |
75
(23.9) |
82
(27.8) |
93
(33.9) |
98
(36.7) |
106
(41.1) |
110
(43.3) |
106
(41.1) |
104
(40) |
94
(34.4) |
83
(28.3) |
75
(23.9) |
110
(43.3) |
| Average high deg F (deg C) |
33.6
(0.89) |
38.6
(3.67) |
46.6
(8.11) |
57.1
(13.94) |
67.2
(19.56) |
77.4
(25.22) |
85.5
(29.72) |
85.5
(29.72) |
75.2
(24) |
61.7
(16.5) |
44.8
(7.11) |
36.1
(2.28) |
59.1
(15.06) |
| Average low deg F (deg C) |
11.3
(-11.5) |
15.9
(-8.94) |
23.2
(-4.89) |
32.3
(0.17) |
42.7
(5.94) |
51.8
(11) |
57.9
(14.39) |
56.6
(13.67) |
46
(7.8) |
34.7
(1.5) |
22.1
(-5.5) |
13.3
(-10.39) |
34.0
(1.11) |
| Record low deg F (deg C) |
-27
(-32.8) |
-31
(-35) |
-21
(-29.4) |
1
(-17.2) |
18
(-7.8) |
32
(0) |
39
(3.9) |
38
(3.3) |
18
(-7.8) |
-2
(-18.9) |
-19
(-28.3) |
-30
(-34.4) |
-31
(-35) |
| Precipitation inches (mm) |
0.37
(9.4) |
0.46
(11.7) |
1.03
(26.2) |
1.86
(47.2) |
2.96
(75.2) |
2.83
(71.9) |
2.03
(51.6) |
1.61
(40.9) |
1.10
(27.9) |
1.37
(34.8) |
0.61
(15.5) |
0.41
(10.4) |
16.64
(422.7) |
| Snowfall inches (cm) |
5.2
(13.2) |
6.5
(16.5) |
9.1
(23.1) |
6.2
(15.7) |
0.5
(1.3) |
0
(0) |
0
(0) |
0
(0) |
0.2
(0.5) |
1.8
(4.6) |
6.3
(16) |
5.3
(13.5) |
41.1
(104.4) |
| Avg. precipitation days |
6.4 |
6.4 |
8.2 |
9.7 |
12 |
12.1 |
9.8 |
7.8 |
6.5 |
6.4 |
5.8 |
5.5 |
96.6 |
| Avg. snowy days |
6.5 |
6.2 |
6.3 |
3.9 |
0.3 |
0 |
0 |
0 |
0.3 |
1.5 |
4.8 |
5.5 |
35.3 |
| Sunshine hours |
164.3 |
175.2 |
232.5 |
246 |
272.8 |
312 |
334.8 |
322.4 |
261 |
226.3 |
156 |
148.8 |
2,852.1 |
| Source: NOAA, HKO |