Eureka, MT
Climate overview — based on NOAA 1991-2020 normals from EUREKA RS, MT US.
Year-round temperatures (°F)
Climate summary
Eureka has an annual average temperature of 47°F with about 15 inches of precipitation per year and 35.1 inches of snow. The warmest month is July (average high 86.5°F), and the coldest is January (average low 19.3°F). June is typically the wettest month (2.53 in) and February the driest (0.72 in). Snow typically falls from October through May.
Best time to visit Eureka
Full guide →Climate change signal
All-time records →67 of 366 (18.3%) of Eureka'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 | 81 | |
| 1970s | 43 | |
| 1980s | 57 | |
| 1990s | 59 | |
| 2000s | 48 | |
| 2010s | 41 | |
| 2020s | 37 |
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 | 32.3°F | 19.3°F | 25.8°F | 0.92 in | 8.5 in | 11 |
| February | 38.6°F | 21.1°F | 29.8°F | 0.72 in | 5.9 in | 8 |
| March | 49.2°F | 27.5°F | 38.3°F | 0.90 in | 3.7 in | 9 |
| April | 59.5°F | 34.1°F | 46.8°F | 1.00 in | 1.0 in | 9 |
| May | 69.9°F | 41.9°F | 55.9°F | 1.78 in | 0.2 in | 10 |
| June | 76.6°F | 48.5°F | 62.5°F | 2.53 in | — | 10 |
| July | 86.5°F | 52.7°F | 69.6°F | 1.13 in | — | 7 |
| August | 86.0°F | 51.2°F | 68.6°F | 1.05 in | — | 5 |
| September | 74.8°F | 43.9°F | 59.4°F | 1.27 in | — | 7 |
| October | 57.4°F | 35.1°F | 46.3°F | 1.24 in | 0.6 in | 9 |
| November | 41.4°F | 27.4°F | 34.4°F | 1.24 in | 5.0 in | 9 |
| December | 31.4°F | 20.8°F | 26.1°F | 1.22 in | 10.2 in | 10 |
Climate twins of Eureka
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).