Spearfish May Weather

Averages and records for weather in Spearfish, South Dakota in the month of May.
Typical Spearfish May Weather
1991–2020
Average daily high 66.2 °F
Average daily low 43.8 °F
Average monthly precipitation 3.5 inches
Average monthly snow 2.2 inches
Daily chance of precipitation 35.1%
Daily chance of snow 1.2%
Spearfish May Weather Records
1893–2024
Highest temperature 96 °F May 14, 2001
Lowest temperature 11 °F May 1, 1909
Highest daily low 72 °F May 20, 1964
Lowest daily high 32 °F May 2, 1954
Hottest average high temperature 82.7 °F 1934
Coldest average high temperature 58.0 °F 2019
Most daily precipitation 6.5 inches May 11, 1922
Most monthly precipitation 14.1 inches 1982
Most daily snow 24.0 inches May 4, 1905
Most monthly snow 31.0 inches 1942
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
May 1 61.1 38.9 87 11
May 2 61.5 39.2 87 19
May 3 61.9 39.6 90 14
May 4 62.3 39.9 89 20
May 5 62.7 40.3 93 21
May 6 63.2 40.7 86 26
May 7 63.4 41.0 92 23
May 8 63.6 41.3 92 19
May 9 63.7 41.5 90 24
May 10 64.0 41.9 88 25
May 11 64.4 42.2 89 13
May 12 64.7 42.5 93 16
May 13 65.1 42.8 92 21
May 14 65.5 43.2 96 23
May 15 66.0 43.6 95 29
May 16 66.5 44.0 92 21
May 17 66.9 44.4 93 29
May 18 67.2 44.8 90 28
May 19 67.5 45.1 95 29
May 20 67.9 45.4 95 27
May 21 68.2 45.7 91 19
May 22 68.5 46.0 93 26
May 23 69.0 46.4 87 28
May 24 69.4 46.8 89 28
May 25 69.8 47.1 92 30
May 26 70.2 47.5 92 25
May 27 70.6 48.0 96 28
May 28 71.0 48.3 95 28
May 29 71.2 48.5 95 22
May 30 71.4 48.9 94 31
May 31 71.6 49.1 93 30
Weather Station Details
Years Station Coordinates
1893–2024 Spearfish location