Rapid City Weather in 2021

Historical record of Rapid City, South Dakota weather for the year 2021 based on NOAA data.
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2021 Rapid City Weather Extremes
Highest temperature 107 °F July 27
Lowest temperature -24 °F February 13
Highest daily low 68 °F July 28
Lowest daily high -8 °F February 14
Most daily precipitation 1.9 inches June 8
Total annual precipitation 16.4 inches -
January 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
50 16 0.00
48 15 0.00
50 21 0.00
49 21 0.00
50 22 0.00
47 18 0.00
37 11 0.00
30 23 0.00
31 27 0.00
44 15 0.00
53 19 0.00
55 23 0.00
52 34 0.00
38 28 0.00
38 19 0.00
44 20 0.00
42 17 0.03
37 13 0.00
39 19 0.00
48 18 0.00
38 21 0.00
33 18 0.00
32 17 0.00
33 10 0.00
22 16 0.00
19 13 0.01
28 5 0.00
51 12 0.00
46 20 0.00
38 20 0.00
51 13 0.00
February 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
51 14 0.00
55 17 0.00
59 20 0.00
39 10 0.00
27 12 0.09
12 -3 0.07
2 -13 0.07
3 -17 0.01
1 -10 0.00
3 -9 0.02
1 -12 0.11
-5 -12 0.07
-4 -24 0.01
-8 -23 0.00
3 -17 0.00
4 -12 0.01
18 2 0.00
20 -1 0.00
26 -5 0.00
37 10 0.00
40 18 0.00
57 28 0.00
49 22 0.00
39 16 0.00
47 10 0.00
46 19 0.00
36 14 0.12
33 10 0.00
March 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
54 16 0.00
59 26 0.00
63 29 0.00
63 25 0.00
64 30 0.00
70 26 0.00
61 32 0.00
62 28 0.00
54 36 0.00
36 19 0.06
46 17 0.00
50 21 0.00
53 22 0.10
40 28 0.55
33 26 0.12
34 21 0.00
42 24 0.00
39 23 0.00
57 27 0.00
68 32 0.00
53 29 0.00
56 23 0.00
51 32 0.00
51 26 0.00
57 22 0.00
48 32 0.06
50 25 0.00
71 22 0.00
70 32 0.00
41 16 0.00
49 11 0.00
April 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
72 20 0.00
78 36 0.00
78 36 0.00
80 34 0.00
70 43 0.00
43 32 0.22
58 32 0.00
68 29 0.00
49 26 0.00
66 22 0.00
50 28 0.00
44 26 0.00
42 26 0.00
39 27 0.00
35 28 0.22
44 29 0.08
55 23 0.00
65 29 0.12
32 22 0.15
37 19 0.04
46 18 0.00
56 22 0.00
39 28 0.00
54 29 0.00
61 33 0.00
63 37 0.04
56 36 0.09
68 33 0.00
74 37 0.00
86 44 0.00
May 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
80 54 0.08
58 45 0.03
59 33 0.00
64 31 0.02
60 34 0.09
65 35 0.00
70 35 0.00
50 36 0.00
50 36 0.05
54 33 0.00
61 31 0.00
65 31 0.01
68 31 0.02
67 38 0.00
67 44 0.03
73 47 0.00
72 41 0.00
81 50 0.00
80 49 0.00
84 49 0.38
56 40 0.07
56 39 0.00
65 44 1.35
75 42 0.00
75 45 0.00
52 40 0.35
47 40 0.00
66 39 0.00
67 44 0.00
72 42 0.00
75 41 0.00
June 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
78 50 0.03
82 48 0.00
87 49 0.00
96 54 0.00
95 57 0.00
87 56 0.00
94 56 0.00
98 59 1.91
86 58 0.00
92 65 0.00
73 49 0.00
88 47 0.00
87 58 0.00
88 59 0.00
99 64 0.00
89 56 0.00
87 53 0.00
89 53 0.00
88 52 0.06
73 53 0.03
78 48 0.01
88 46 0.00
98 51 0.00
84 61 0.28
72 57 0.01
77 51 0.00
80 53 0.19
80 54 0.00
84 50 0.00
88 53 0.00
July 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
90 59 0.00
93 62 0.00
96 66 0.00
95 64 0.00
99 64 0.69
82 61 0.00
89 61 0.00
90 61 0.05
87 62 0.06
84 57 0.05
90 53 0.00
89 58 0.00
81 57 1.01
76 57 0.05
88 57 0.00
89 61 0.13
89 60 0.01
93 58 0.00
92 61 0.00
93 64 0.00
92 65 0.12
97 66 0.03
91 65 0.00
91 63 0.00
101 61 0.00
99 64 0.00
107 61 0.00
100 68 0.00
88 61 0.01
76 56 0.28
88 56 0.00
August 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
89 55 0.00
94 54 0.00
93 56 0.00
89 65 0.02
93 59 0.04
91 58 0.04
89 54 0.00
98 55 0.00
83 59 0.00
94 53 0.00
95 55 0.00
84 57 0.00
86 55 0.00
94 58 0.01
98 57 0.00
98 57 0.00
105 58 0.00
85 62 0.00
68 56 0.38
73 51 0.19
80 43 0.00
86 53 0.00
98 50 0.00
84 54 0.00
82 54 0.02
83 53 1.44
86 56 0.00
78 47 0.00
82 46 0.00
87 57 0.00
86 57 0.00
September 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
78 62 0.00
80 58 0.00
70 52 0.29
76 46 0.00
86 51 0.00
96 55 0.00
81 51 0.00
80 49 0.00
88 50 0.00
93 55 0.00
82 57 0.00
82 52 0.05
76 56 0.09
75 50 0.10
87 48 0.00
78 46 0.00
72 37 0.00
96 49 0.00
91 51 0.09
66 42 0.05
68 37 0.00
82 38 0.00
82 43 0.00
70 41 0.02
86 38 0.00
91 54 0.00
93 48 0.00
94 55 0.00
68 49 0.02
70 46 0.00
October 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
73 42 0.00
77 41 0.00
82 40 0.00
87 44 0.00
90 52 0.00
85 50 0.00
80 51 0.02
77 50 0.00
68 49 0.17
68 41 0.00
64 40 0.00
52 32 1.63
45 31 0.52
50 27 0.00
54 30 0.00
67 30 0.00
78 34 0.00
78 38 0.00
54 32 0.23
40 26 0.19
58 25 0.00
62 37 0.00
55 36 0.00
59 34 0.00
63 35 0.00
51 39 0.00
61 39 0.00
56 31 0.00
73 31 0.00
57 36 0.00
40 32 0.00
November 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
43 19 0.00
48 16 0.00
61 21 0.00
64 29 0.00
68 36 0.00
76 32 0.00
66 36 0.00
46 33 0.14
55 32 0.01
51 31 0.02
44 25 0.00
43 23 0.00
66 27 0.00
55 30 0.00
69 38 0.00
67 25 0.00
39 16 0.00
46 9 0.00
53 22 0.00
46 24 0.00
42 21 0.00
59 27 0.00
66 30 0.00
40 11 0.00
47 11 0.00
69 30 0.00
52 24 0.00
59 21 0.00
63 39 0.01
56 33 0.01
December 2021 Rapid City Weather
Day High (°F) Low (°F) Precip. (inches)
74 30 0.00
75 40 0.00
44 32 0.00
32 24 0.00
38 11 0.00
26 3 0.00
34 9 0.00
57 22 0.00
44 28 0.07
28 8 0.50
38 8 0.00
46 25 0.00
43 30 0.00
51 32 0.00
38 22 0.00
31 15 0.00
22 1 0.00
20 -4 0.00
53 17 0.00
26 15 0.00
44 21 0.00
47 18 0.00
57 26 0.00
51 19 0.00
29 12 0.00
30 9 0.00
14 -3 0.00
22 -7 0.02
16 4 0.01
26 -2 0.00
16 -5 0.01
Weather Station Details
Years Station Coordinates
1948–2022 Rapid City Regional Airport location