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 -
Highest Temperatures in Rapid City in 2021
Rank Temperature Date
1 107 °F Jul 27
2 105 °F Aug 17
3 101 °F Jul 25
4 100 °F Jul 28
5 99 °F Jul 26
5 99 °F Jul 5
5 99 °F Jun 15
8 98 °F Aug 23
8 98 °F Aug 16
8 98 °F Aug 15
8 98 °F Aug 8
8 98 °F Jun 23
8 98 °F Jun 8
Lowest Temperatures in Rapid City in 2021
Rank Temperature Date
1 -24 °F February 13
2 -23 °F February 14
3 -17 °F February 15
3 -17 °F February 8
5 -13 °F February 7
6 -12 °F February 16
6 -12 °F February 12
6 -12 °F February 11
9 -10 °F February 9
10 -9 °F February 10
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
1948–2024 Rapid City Regional Airport location