Fairfield, MT
Climate overview — based on NOAA 1991-2020 normals from FAIRFIELD, MT US.
Year-round temperatures (°F)
Climate summary
Fairfield has an annual average temperature of 44.4°F with about 12.4 inches of precipitation per year. The warmest month is July (average high 79.7°F), and the coldest is January (average low 16.5°F). June is typically the wettest month (2.63 in) and December the driest (0.33 in).
Best time to visit Fairfield
Full guide →Climate change signal
All-time records →42 of 366 (11.5%) of Fairfield'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.
| 1920s | 2 | |
| 1930s | 46 | |
| 1940s | 29 | |
| 1950s | 26 | |
| 1960s | 62 | |
| 1970s | 32 | |
| 1980s | 49 | |
| 1990s | 36 | |
| 2000s | 32 | |
| 2010s | 26 | |
| 2020s | 26 |
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 | 35.7°F | 16.5°F | 26.1°F | 0.34 in | — | 4 |
| February | 36.4°F | 17.1°F | 26.8°F | 0.43 in | — | 5 |
| March | 44.8°F | 23.9°F | 34.3°F | 0.60 in | — | 6 |
| April | 52.8°F | 31.5°F | 42.2°F | 1.36 in | — | 7 |
| May | 62.3°F | 40.7°F | 51.5°F | 2.12 in | — | 8 |
| June | 69.5°F | 47.6°F | 58.5°F | 2.63 in | — | 9 |
| July | 79.7°F | 53.3°F | 66.5°F | 1.08 in | — | 6 |
| August | 79.0°F | 51.9°F | 65.5°F | 1.05 in | — | 6 |
| September | 68.5°F | 44.0°F | 56.3°F | 1.23 in | — | 6 |
| October | 55.3°F | 33.9°F | 44.6°F | 0.74 in | — | 4 |
| November | 42.7°F | 24.9°F | 33.8°F | 0.46 in | — | 4 |
| December | 35.3°F | 17.9°F | 26.6°F | 0.33 in | — | 4 |
Climate twins of Fairfield
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).