Hysham, MT
Climate overview — based on NOAA 1991-2020 normals from HYSHAM, MT US.
Year-round temperatures (°F)
Climate summary
Hysham has an annual average temperature of 47.2°F with about 14.9 inches of precipitation per year and 37.1 inches of snow. The warmest month is July (average high 87.6°F), and the coldest is January (average low 12.4°F). May is typically the wettest month (2.47 in) and December the driest (0.48 in). Snow typically falls from October through May.
Best time to visit Hysham
Full guide →Climate change signal
All-time records →47 of 366 (12.8%) of Hysham'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.
| 1940s | 34 | |
| 1950s | 47 | |
| 1960s | 62 | |
| 1970s | 29 | |
| 1980s | 76 | |
| 1990s | 37 | |
| 2000s | 27 | |
| 2010s | 23 | |
| 2020s | 31 |
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 | 34.7°F | 12.4°F | 23.6°F | 0.61 in | 8.3 in | 5 |
| February | 38.7°F | 15.3°F | 27.0°F | 0.58 in | 5.4 in | 5 |
| March | 50.5°F | 23.8°F | 37.1°F | 0.80 in | 5.6 in | 6 |
| April | 60.5°F | 33.0°F | 46.8°F | 1.72 in | 2.5 in | 7 |
| May | 69.8°F | 42.5°F | 56.1°F | 2.47 in | 0.8 in | 9 |
| June | 78.7°F | 51.7°F | 65.2°F | 2.22 in | — | 9 |
| July | 87.6°F | 57.5°F | 72.5°F | 1.51 in | — | 6 |
| August | 86.0°F | 55.1°F | 70.6°F | 1.16 in | — | 5 |
| September | 75.3°F | 45.5°F | 60.4°F | 1.40 in | 0.1 in | 5 |
| October | 60.4°F | 34.2°F | 47.3°F | 1.38 in | 2.7 in | 6 |
| November | 46.7°F | 23.1°F | 34.9°F | 0.59 in | 4.2 in | 5 |
| December | 36.2°F | 14.7°F | 25.4°F | 0.48 in | 7.5 in | 5 |
Climate twins of Hysham
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).