Harlowton, MT
Climate overview — based on NOAA 1991-2020 normals from HARLOWTON, MT US.
Year-round temperatures (°F)
Climate summary
Harlowton has an annual average temperature of 43.8°F with about 13.2 inches of precipitation per year and 19.6 inches of snow. The warmest month is July (average high 83.9°F), and the coldest is January (average low 13.3°F). June is typically the wettest month (2.81 in) and February the driest (0.30 in). Snow typically falls from October through May.
Best time to visit Harlowton
Full guide →Climate change signal
All-time records →66 of 366 (18%) of Harlowton'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 | 13 | |
| 1950s | 44 | |
| 1960s | 36 | |
| 1970s | 21 | |
| 1980s | 67 | |
| 1990s | 60 | |
| 2000s | 43 | |
| 2010s | 42 | |
| 2020s | 40 |
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 | 13.3°F | 24.5°F | 0.31 in | 3.7 in | 4 |
| February | 38.2°F | 14.1°F | 26.2°F | 0.30 in | 1.9 in | 3 |
| March | 47.5°F | 19.8°F | 33.7°F | 0.55 in | 2.6 in | 5 |
| April | 54.3°F | 27.8°F | 41.0°F | 1.34 in | 3.1 in | 8 |
| May | 64.3°F | 37.1°F | 50.7°F | 2.53 in | 0.3 in | 9 |
| June | 73.6°F | 45.5°F | 59.6°F | 2.81 in | — | 11 |
| July | 83.9°F | 49.9°F | 66.9°F | 1.42 in | — | 8 |
| August | 83.2°F | 48.4°F | 65.8°F | 1.25 in | — | 6 |
| September | 72.5°F | 39.6°F | 56.1°F | 1.07 in | 0.1 in | 5 |
| October | 57.4°F | 29.5°F | 43.5°F | 0.68 in | 0.6 in | 5 |
| November | 44.6°F | 20.6°F | 32.6°F | 0.51 in | 3.6 in | 4 |
| December | 35.4°F | 14.7°F | 25.0°F | 0.41 in | 3.7 in | 3 |
Climate twins of Harlowton
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).