Harlem, MT
Climate overview — based on NOAA 1991-2020 normals from HARLEM, MT US.
Year-round temperatures (°F)
Climate summary
Harlem has an annual average temperature of 43.6°F with about 12.5 inches of precipitation per year. The warmest month is July (average high 85.0°F), and the coldest is January (average low 5.0°F). June is typically the wettest month (2.90 in) and February the driest (0.36 in).
Best time to visit Harlem
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Harlem'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 | 2 | |
| 1900s | 3 | |
| 1920s | 3 | |
| 1930s | 54 | |
| 1940s | 44 | |
| 1950s | 27 | |
| 1960s | 43 | |
| 1970s | 20 | |
| 1980s | 61 | |
| 1990s | 71 | |
| 2000s | 37 | |
| 2010s | 1 |
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 | 28.2°F | 5.0°F | 16.6°F | 0.51 in | — | 5 |
| February | 32.7°F | 8.9°F | 20.8°F | 0.36 in | — | 4 |
| March | 45.0°F | 19.9°F | 32.5°F | 0.52 in | — | 5 |
| April | 58.8°F | 29.9°F | 44.4°F | 1.00 in | — | 6 |
| May | 69.0°F | 39.7°F | 54.3°F | 1.89 in | — | 10 |
| June | 76.6°F | 48.7°F | 62.6°F | 2.90 in | — | 12 |
| July | 85.0°F | 53.5°F | 69.3°F | 1.44 in | — | 7 |
| August | 84.7°F | 51.6°F | 68.2°F | 0.99 in | — | 5 |
| September | 74.1°F | 41.7°F | 57.9°F | 1.09 in | — | 5 |
| October | 59.7°F | 30.4°F | 45.1°F | 0.73 in | — | 5 |
| November | 43.3°F | 18.9°F | 31.1°F | 0.57 in | — | 5 |
| December | 30.9°F | 8.7°F | 19.8°F | 0.50 in | — | 4 |
Climate twins of Harlem
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).