Spearfish, SD
Climate overview — based on NOAA 1991-2020 normals from SPEARFISH, SD US.
Year-round temperatures (°F)
Climate summary
Spearfish has an annual average temperature of 46.5°F with about 21.4 inches of precipitation per year and 70.5 inches of snow. The warmest month is July (average high 83.6°F), and the coldest is January (average low 15.7°F). May is typically the wettest month (3.72 in) and January the driest (0.60 in). Snow typically falls from October through May.
Best time to visit Spearfish
Full guide →Climate change signal
All-time records →18 of 366 (4.9%) of Spearfish's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 18 | |
| 1900s | 24 | |
| 1910s | 18 | |
| 1920s | 31 | |
| 1930s | 83 | |
| 1940s | 17 | |
| 1950s | 27 | |
| 1960s | 24 | |
| 1970s | 21 | |
| 1980s | 22 | |
| 1990s | 15 | |
| 2000s | 33 | |
| 2010s | 25 | |
| 2020s | 8 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 35.9°F | 15.7°F | 25.8°F | 0.60 in | 8.2 in | 7 |
| February | 36.9°F | 16.3°F | 26.6°F | 0.91 in | 12.7 in | 7 |
| March | 45.8°F | 24.2°F | 35.0°F | 1.19 in | 12.0 in | 6 |
| April | 54.9°F | 32.0°F | 43.5°F | 2.23 in | 8.5 in | 9 |
| May | 64.3°F | 41.8°F | 53.1°F | 3.72 in | 2.3 in | 12 |
| June | 75.3°F | 51.3°F | 63.3°F | 3.51 in | — | 12 |
| July | 83.6°F | 57.6°F | 70.6°F | 2.35 in | — | 9 |
| August | 82.9°F | 56.1°F | 69.5°F | 1.88 in | — | 7 |
| September | 74.0°F | 47.6°F | 60.8°F | 1.56 in | 0.1 in | 6 |
| October | 58.1°F | 35.4°F | 46.8°F | 2.04 in | 5.5 in | 7 |
| November | 45.9°F | 25.6°F | 35.7°F | 0.70 in | 6.3 in | 5 |
| December | 37.2°F | 17.5°F | 27.3°F | 0.72 in | 14.9 in | 5 |
Climate twins of Spearfish
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).