Sioux Falls Weather in 2021

Historical record of Sioux Falls, South Dakota weather for the year 2021 based on NOAA data.
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2021 Sioux Falls Weather Extremes
Highest temperature 101 °F July 28
Lowest temperature -26 °F February 15
Highest daily low 76 °F July 28
Lowest daily high -9 °F February 14
Most daily precipitation 3.4 inches August 28
Most daily snow 9.5 inches December 10
Total annual precipitation 27.8 inches -
Total annual snow 32.1 inches -
January 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
35 4 0.00 0.0
32 9 0.00 0.0
31 5 0.00 0.0
39 17 0.00 0.0
41 13 0.00 0.0
38 33 0.33 0.8
35 28 0.00 0.0
32 28 0.00 0.0
33 24 0.00 0.0
36 30 0.00 0.0
37 23 0.00 0.0
43 21 0.00 0.0
45 25 0.08 0.0
42 30 0.34 1.5
31 27 0.04 0.6
27 22 0.00 0.0
35 22 0.00 0.0
32 19 0.01 0.3
34 13 0.00 0.0
47 17 0.00 0.0
37 17 0.00 0.0
23 9 0.00 0.0
25 18 0.17 2.0
23 12 0.00 0.0
21 10 0.00 0.1
19 10 0.00 0.0
22 9 0.00 0.0
25 15 0.00 0.0
28 25 0.00 0.0
30 28 0.00 0.0
28 25 0.00 0.0
February 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
28 22 0.00 0.0
28 20 0.00 0.0
42 22 0.03 0.2
31 12 0.36 3.6
17 6 0.00 0.0
7 -7 0.00 0.0
1 -12 0.03 0.3
6 -12 0.00 0.0
9 -4 0.00 0.0
10 -2 0.00 0.0
3 -4 0.01 0.1
-2 -11 0.00 0.0
1 -13 0.02 0.3
-9 -19 0.00 0.0
-2 -26 0.00 0.0
0 -24 0.00 0.0
10 -1 0.03 0.9
20 -4 0.00 0.0
22 -3 0.00 0.0
27 -4 0.00 0.0
34 13 0.12 1.3
49 21 0.00 0.0
55 26 0.00 0.0
41 29 0.00 0.0
42 23 0.00 0.0
49 31 0.00 0.0
45 22 0.03 0.0
34 20 0.10 0.8
March 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
32 17 0.00 0.0
55 27 0.00 0.0
62 27 0.00 0.0
58 29 0.00 0.0
56 27 0.00 0.0
56 27 0.00 0.0
68 35 0.00 0.0
66 29 0.00 0.0
73 47 0.00 0.0
49 29 0.41 0.3
48 27 0.00 0.0
54 22 0.00 0.0
57 25 0.00 0.0
46 33 0.36 1.8
33 30 0.57 4.7
34 30 0.15 1.5
35 31 0.00 0.0
42 25 0.00 0.0
52 20 0.00 0.0
63 38 0.00 0.0
62 34 0.00 0.0
57 30 0.06 0.0
46 40 1.03 0.0
50 29 0.00 0.0
53 24 0.00 0.0
56 26 0.00 0.0
50 34 0.05 0.0
55 24 0.00 0.0
81 42 0.00 0.0
44 26 0.00 0.0
39 18 0.00 0.0
April 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
56 16 0.00 0.0
74 39 0.00 0.0
76 33 0.00 0.0
84 48 0.00 0.0
90 50 0.18 0.0
66 47 0.25 0.0
52 46 0.42 0.0
47 44 0.85 0.0
54 40 0.11 0.0
61 38 0.00 0.0
64 29 0.00 0.0
52 36 0.00 0.0
41 31 0.00 0.0
47 30 0.00 0.0
49 34 0.00 0.0
49 39 0.00 0.0
58 37 0.01 0.0
68 33 0.00 0.0
43 28 0.00 0.0
47 22 0.01 0.1
50 20 0.00 0.1
61 32 0.05 0.0
60 39 0.00 0.0
53 32 0.00 0.0
61 35 0.17 0.0
76 46 0.00 0.0
61 44 0.02 0.0
71 40 0.00 0.0
72 41 0.00 0.0
74 43 0.00 0.0
May 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
93 59 0.00 0.0
72 54 0.00 0.0
66 45 0.00 0.0
62 32 0.00 0.0
49 36 0.08 0.0
67 30 0.00 0.0
64 36 0.00 0.0
48 41 0.40 0.0
61 41 0.00 0.0
62 38 0.00 0.0
62 29 0.00 0.0
67 40 0.00 0.0
69 47 0.00 0.0
69 49 0.51 0.0
79 50 0.00 0.0
73 50 0.01 0.0
69 47 0.01 0.0
68 59 0.00 0.0
74 59 0.05 0.0
73 64 0.00 0.0
84 63 0.00 0.0
86 68 0.00 0.0
86 59 0.00 0.0
81 60 0.24 0.0
82 58 0.00 0.0
72 52 0.00 0.0
59 44 0.71 0.0
57 43 0.00 0.0
64 42 0.00 0.0
71 55 0.03 0.0
80 49 0.00 0.0
June 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
83 41 0.00 0.0
83 51 0.00 0.0
91 58 0.00 0.0
99 68 0.00 0.0
101 73 0.00 0.0
96 71 0.00 0.0
97 68 0.00 0.0
95 71 0.00 0.0
95 69 0.00 0.0
99 73 0.00 0.0
86 60 0.40 0.0
88 52 0.00 0.0
93 59 0.00 0.0
92 62 0.00 0.0
92 54 0.00 0.0
96 69 0.00 0.0
91 65 0.00 0.0
92 57 0.00 0.0
84 58 0.00 0.0
77 58 0.07 0.0
73 53 0.00 0.0
85 47 0.00 0.0
94 61 0.00 0.0
88 62 0.00 0.0
87 58 0.00 0.0
79 65 0.25 0.0
86 62 0.00 0.0
88 65 0.05 0.0
87 62 0.01 0.0
89 59 0.00 0.0
July 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
90 60 0.00 0.0
91 63 0.00 0.0
92 63 0.00 0.0
97 73 0.00 0.0
97 70 0.18 0.0
86 69 0.12 0.0
74 60 0.01 0.0
77 57 0.33 0.0
84 64 0.47 0.0
73 61 1.08 0.0
85 61 0.00 0.0
82 56 0.00 0.0
84 66 0.00 0.0
81 63 1.01 0.0
83 58 0.00 0.0
82 61 0.00 0.0
84 63 0.00 0.0
84 65 0.00 0.0
86 62 0.00 0.0
86 60 0.00 0.0
88 68 0.00 0.0
90 71 0.05 0.0
94 72 0.00 0.0
94 67 0.01 0.0
93 60 0.00 0.0
92 68 0.00 0.0
96 74 0.00 0.0
101 76 0.00 0.0
88 65 0.00 0.0
72 61 1.64 0.0
86 59 0.00 0.0
August 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
82 60 0.00 0.0
82 56 0.00 0.0
81 62 0.00 0.0
81 64 0.12 0.0
88 65 1.50 0.0
84 65 0.05 0.0
84 71 0.00 0.0
84 68 0.21 0.0
87 62 0.00 0.0
89 70 0.00 0.0
87 71 0.00 0.0
81 62 0.00 0.0
82 55 0.00 0.0
87 55 0.00 0.0
86 62 0.00 0.0
89 66 0.00 0.0
91 70 0.00 0.0
89 71 0.00 0.0
90 72 0.00 0.0
83 66 0.23 0.0
76 57 0.00 0.0
79 58 0.11 0.0
88 65 0.00 0.0
88 72 0.00 0.0
85 64 0.00 0.0
82 65 0.09 0.0
87 68 0.15 0.0
89 67 3.35 0.0
82 60 0.00 0.0
81 57 0.05 0.0
80 62 0.43 0.0
September 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
78 60 0.00 0.0
69 65 0.34 0.0
69 65 0.00 0.0
79 56 0.00 0.0
84 53 0.09 0.0
90 52 0.00 0.0
80 59 0.00 0.0
80 52 0.00 0.0
78 47 0.00 0.0
84 56 0.00 0.0
84 61 0.00 0.0
76 57 0.04 0.0
74 54 0.17 0.0
77 53 0.00 0.0
80 48 0.00 0.0
93 64 0.23 0.0
74 51 0.01 0.0
85 49 0.00 0.0
89 70 0.00 0.0
77 50 1.17 0.0
69 45 0.00 0.0
71 41 0.00 0.0
78 51 0.00 0.0
70 42 0.03 0.0
80 39 0.00 0.0
89 57 0.00 0.0
86 53 0.00 0.0
89 59 0.00 0.0
80 64 0.13 0.0
72 62 1.00 0.0
October 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
73 64 0.16 0.0
68 57 0.01 0.0
77 46 0.00 0.0
83 45 0.00 0.0
78 47 0.00 0.0
71 54 0.00 0.0
75 52 0.00 0.0
83 55 0.00 0.0
80 57 0.00 0.0
63 45 0.00 0.0
74 41 0.00 0.0
70 42 0.00 0.0
66 46 0.31 0.0
57 40 0.00 0.0
58 37 0.00 0.0
68 34 0.00 0.0
73 34 0.00 0.0
76 42 0.00 0.0
71 47 0.00 0.0
53 38 0.57 0.0
53 38 0.00 0.0
52 33 0.08 0.0
53 31 0.00 0.0
47 43 0.03 0.0
53 32 0.00 0.0
56 42 0.00 0.0
54 48 1.17 0.0
58 45 0.00 0.0
61 36 0.00 0.0
60 33 0.00 0.0
47 27 0.00 0.0
November 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
46 23 0.00 0.0
47 21 0.00 0.0
51 24 0.00 0.0
45 23 0.00 0.0
68 42 0.00 0.0
68 32 0.00 0.0
62 42 0.00 0.0
60 34 0.00 0.0
56 34 0.00 0.0
49 40 0.20 0.0
46 33 0.03 0.2
33 28 0.02 0.3
43 25 0.03 0.0
37 25 0.00 0.0
45 31 0.00 0.0
70 35 0.00 0.0
43 23 0.00 0.0
34 21 0.00 0.0
49 26 0.00 0.0
48 33 0.01 0.0
39 19 0.00 0.0
44 19 0.00 0.0
68 23 0.00 0.0
53 23 0.00 0.0
29 12 0.00 0.0
48 24 0.00 0.0
51 28 0.00 0.0
46 20 0.00 0.0
67 30 0.00 0.0
55 28 0.00 0.0
December 2021 Sioux Falls Weather
Day High (°F) Low (°F) Precip. (inches) Snow (inches)
61 33 0.00 0.0
53 35 0.00 0.0
51 28 0.00 0.0
37 31 0.00 0.0
44 28 0.00 0.0
28 8 0.00 0.0
30 13 0.03 0.3
36 11 0.00 0.0
51 29 0.00 0.0
33 28 0.70 9.5
30 18 0.00 0.0
39 20 0.00 0.0
42 15 0.00 0.0
42 21 0.00 0.0
52 23 0.73 0.0
29 17 0.00 0.0
28 20 0.01 0.2
22 11 0.00 0.0
36 14 0.00 0.0
28 11 0.00 0.0
34 14 0.00 0.0
40 21 0.00 0.0
42 20 0.00 0.0
50 24 0.00 0.0
27 15 0.00 0.0
35 12 0.02 0.2
34 12 0.00 0.0
29 2 0.00 0.0
17 0 0.00 0.0
36 14 0.00 0.0
21 -4 0.00 0.0
Weather Station Details
Years Station Coordinates
1932–2022 Sioux Falls location