Chester, MT
Climate overview — based on NOAA 1991-2020 normals from CHESTER, MT US.
Year-round temperatures (°F)
Climate summary
Chester has an annual average temperature of 41.4°F with about 12.3 inches of precipitation per year and 36.5 inches of snow. The warmest month is July (average high 82.5°F), and the coldest is January (average low 2.6°F). June is typically the wettest month (2.76 in) and February the driest (0.45 in). Snow typically falls from September through May.
Best time to visit Chester
Full guide →Climate change signal
All-time records →43 of 366 (11.7%) of Chester'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 | 18 | |
| 1910s | 43 | |
| 1920s | 1 | |
| 1940s | 40 | |
| 1950s | 43 | |
| 1960s | 43 | |
| 1970s | 22 | |
| 1980s | 43 | |
| 1990s | 32 | |
| 2000s | 30 | |
| 2010s | 19 | |
| 2020s | 32 |
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 | 28.7°F | 2.6°F | 15.7°F | 0.54 in | 8.3 in | 5 |
| February | 33.0°F | 6.2°F | 19.6°F | 0.45 in | 5.7 in | 5 |
| March | 44.1°F | 16.6°F | 30.4°F | 0.59 in | 5.1 in | 6 |
| April | 55.5°F | 27.5°F | 41.5°F | 1.10 in | 3.7 in | 7 |
| May | 65.8°F | 38.2°F | 52.0°F | 1.68 in | 0.4 in | 10 |
| June | 72.7°F | 46.2°F | 59.5°F | 2.76 in | 0.1 in | 12 |
| July | 82.5°F | 51.7°F | 67.1°F | 1.19 in | — | 6 |
| August | 82.0°F | 49.7°F | 65.8°F | 1.09 in | — | 6 |
| September | 71.0°F | 40.5°F | 55.7°F | 1.00 in | 0.6 in | 6 |
| October | 56.8°F | 27.3°F | 42.1°F | 0.74 in | 0.7 in | 6 |
| November | 41.1°F | 15.2°F | 28.2°F | 0.58 in | 5.6 in | 5 |
| December | 31.6°F | 5.6°F | 18.6°F | 0.56 in | 6.3 in | 5 |
Climate twins of Chester
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).