Altamont, SD
Climate overview — based on NOAA 1991-2020 normals from CLEAR LAKE, SD US.
Year-round temperatures (°F)
Climate summary
Altamont has an annual average temperature of 42.4°F with about 27.5 inches of precipitation per year and 60.7 inches of snow. The warmest month is July (average high 80.3°F), and the coldest is January (average low 2.4°F). June is typically the wettest month (4.46 in) and January the driest (0.72 in). Snow typically falls from October through May.
Best time to visit Altamont
Full guide →Climate change signal
All-time records →17 of 366 (4.6%) of Altamont'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.
| 1900s | 19 | |
| 1930s | 0 | |
| 1940s | 0 | |
| 1950s | 56 | |
| 1960s | 57 | |
| 1970s | 40 | |
| 1980s | 71 | |
| 1990s | 43 | |
| 2000s | 42 | |
| 2010s | 38 |
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 | 20.8°F | 2.4°F | 11.6°F | 0.72 in | 10.8 in | 7 |
| February | 25.5°F | 6.6°F | 16.0°F | 0.80 in | 10.3 in | 6 |
| March | 37.6°F | 18.2°F | 27.9°F | 1.55 in | 9.6 in | 7 |
| April | 52.8°F | 31.1°F | 42.0°F | 2.49 in | 7.0 in | 9 |
| May | 65.7°F | 44.4°F | 55.1°F | 3.42 in | 0.2 in | 12 |
| June | 75.4°F | 55.2°F | 65.3°F | 4.46 in | — | 12 |
| July | 80.3°F | 59.9°F | 70.1°F | 3.27 in | — | 9 |
| August | 78.1°F | 57.5°F | 67.8°F | 3.37 in | — | 10 |
| September | 70.3°F | 48.7°F | 59.5°F | 3.01 in | — | 9 |
| October | 56.2°F | 34.5°F | 45.4°F | 2.35 in | 1.4 in | 8 |
| November | 39.8°F | 21.2°F | 30.5°F | 1.13 in | 7.8 in | 6 |
| December | 26.0°F | 8.9°F | 17.4°F | 0.91 in | 13.6 in | 7 |
Climate twins of Altamont
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).