Darby, MT
Climate overview — based on NOAA 1991-2020 normals from DARBY, MT US.
Year-round temperatures (°F)
Climate summary
Darby has an annual average temperature of 44.6°F with about 15.1 inches of precipitation per year. The warmest month is July (average high 81.8°F), and the coldest is January (average low 19.2°F). June is typically the wettest month (2.09 in) and March the driest (0.85 in).
Best time to visit Darby
Full guide →Climate change signal
All-time records →13 of 366 (3.6%) of Darby'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 | 0 | |
| 1900s | 0 | |
| 1910s | 0 | |
| 1920s | 21 | |
| 1930s | 37 | |
| 1940s | 25 | |
| 1950s | 19 | |
| 1960s | 60 | |
| 1970s | 25 | |
| 1980s | 54 | |
| 1990s | 47 | |
| 2000s | 63 | |
| 2010s | 15 | |
| 2020s | 0 |
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 | 33.9°F | 19.2°F | 26.5°F | 1.08 in | — | 8 |
| February | 38.1°F | 21.0°F | 29.5°F | 0.87 in | — | 6 |
| March | 47.2°F | 27.1°F | 37.1°F | 0.85 in | — | 6 |
| April | 53.7°F | 31.3°F | 42.5°F | 1.04 in | — | 7 |
| May | 64.0°F | 39.0°F | 51.5°F | 1.60 in | — | 9 |
| June | 71.6°F | 44.5°F | 58.0°F | 2.09 in | — | 10 |
| July | 81.8°F | 49.6°F | 65.7°F | 1.14 in | — | 6 |
| August | 80.6°F | 47.6°F | 64.1°F | 0.90 in | — | 6 |
| September | 71.4°F | 41.5°F | 56.4°F | 1.23 in | — | 6 |
| October | 57.0°F | 32.6°F | 44.8°F | 1.50 in | — | 8 |
| November | 41.6°F | 24.8°F | 33.2°F | 1.55 in | — | 8 |
| December | 32.2°F | 19.2°F | 25.7°F | 1.26 in | — | 8 |
Climate twins of Darby
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).