Troy, MT
Climate overview — based on NOAA 1991-2020 normals from TROY, MT US.
Year-round temperatures (°F)
Climate summary
Troy has an annual average temperature of 46.8°F with about 24.4 inches of precipitation per year. The warmest month is July (average high 86.7°F), and the coldest is January (average low 22.9°F). November is typically the wettest month (3.50 in) and August the driest (0.71 in).
Best time to visit Troy
Full guide →Climate change signal
All-time records →67 of 366 (18.3%) of Troy'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.
| 1960s | 46 | |
| 1970s | 36 | |
| 1980s | 38 | |
| 1990s | 78 | |
| 2000s | 82 | |
| 2010s | 46 | |
| 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 | 32.7°F | 22.9°F | 27.8°F | 2.63 in | — | 14 |
| February | 39.0°F | 23.6°F | 31.3°F | 1.85 in | — | 10 |
| March | 49.7°F | 28.0°F | 38.9°F | 2.44 in | — | 11 |
| April | 59.1°F | 33.0°F | 46.0°F | 1.65 in | — | 9 |
| May | 69.8°F | 40.1°F | 54.9°F | 1.79 in | — | 10 |
| June | 75.8°F | 46.2°F | 61.0°F | 2.52 in | — | 11 |
| July | 86.7°F | 49.4°F | 68.1°F | 0.88 in | — | 5 |
| August | 86.0°F | 47.7°F | 66.8°F | 0.71 in | — | 5 |
| September | 74.9°F | 41.7°F | 58.3°F | 1.21 in | — | 6 |
| October | 56.5°F | 34.6°F | 45.6°F | 2.42 in | — | 9 |
| November | 40.6°F | 29.3°F | 34.9°F | 3.50 in | — | 14 |
| December | 32.4°F | 23.5°F | 27.9°F | 2.79 in | — | 13 |
Climate twins of Troy
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).