Helena, OH
Climate overview — based on NOAA 1991-2020 normals from FREMONT AG STN, OH US.
Year-round temperatures (°F)
Climate summary
Helena has an annual average temperature of 50.9°F with about 34.9 inches of precipitation per year. The warmest month is July (average high 83.6°F), and the coldest is January (average low 20.2°F). June is typically the wettest month (3.68 in) and February the driest (1.99 in).
Best time to visit Helena
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Helena'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.
| 1990s | 81 | |
| 2000s | 228 | |
| 2010s | 57 |
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 | 33.3°F | 20.2°F | 26.8°F | 2.05 in | — | 10 |
| February | 36.1°F | 21.9°F | 29.0°F | 1.99 in | — | 9 |
| March | 46.2°F | 29.2°F | 37.7°F | 2.42 in | — | 10 |
| April | 59.2°F | 39.4°F | 49.3°F | 3.59 in | — | 12 |
| May | 70.6°F | 50.9°F | 60.8°F | 3.66 in | — | 14 |
| June | 80.1°F | 60.5°F | 70.3°F | 3.68 in | — | 12 |
| July | 83.6°F | 63.9°F | 73.8°F | 3.67 in | — | 11 |
| August | 81.6°F | 61.1°F | 71.4°F | 3.21 in | — | 9 |
| September | 75.4°F | 53.6°F | 64.5°F | 3.00 in | — | 9 |
| October | 63.2°F | 43.4°F | 53.3°F | 2.84 in | — | 10 |
| November | 50.0°F | 33.9°F | 41.9°F | 2.42 in | — | 10 |
| December | 38.2°F | 25.6°F | 31.9°F | 2.32 in | — | 10 |
Climate twins of Helena
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).