Ontonagon, MI
Climate overview — based on NOAA 1991-2020 normals from ONTONAGON 6 SE, MI US.
Year-round temperatures (°F)
Climate summary
Ontonagon has an annual average temperature of 43.3°F with about 32.9 inches of precipitation per year and 177.7 inches of snow. The warmest month is July (average high 79.2°F), and the coldest is February (average low 8.6°F). October is typically the wettest month (3.58 in) and February the driest (1.63 in). Snow typically falls from October through May.
Best time to visit Ontonagon
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Ontonagon'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.
| 1970s | 12 | |
| 1980s | 96 | |
| 1990s | 97 | |
| 2000s | 111 | |
| 2010s | 50 |
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 | 25.1°F | 8.8°F | 17.0°F | 2.87 in | 53.1 in | 18 |
| February | 29.9°F | 8.6°F | 19.3°F | 1.63 in | 27.0 in | 12 |
| March | 40.4°F | 17.7°F | 29.1°F | 1.74 in | 17.6 in | 9 |
| April | 52.1°F | 30.0°F | 41.0°F | 2.38 in | 6.9 in | 9 |
| May | 66.0°F | 41.1°F | 53.6°F | 3.14 in | 1.0 in | 10 |
| June | 75.4°F | 50.0°F | 62.7°F | 2.86 in | — | 11 |
| July | 79.2°F | 55.3°F | 67.2°F | 3.19 in | — | 11 |
| August | 78.4°F | 53.9°F | 66.1°F | 2.99 in | — | 9 |
| September | 70.5°F | 48.4°F | 59.4°F | 2.95 in | 0.1 in | 11 |
| October | 56.3°F | 37.7°F | 47.0°F | 3.58 in | 2.5 in | 14 |
| November | 41.2°F | 26.8°F | 34.0°F | 2.68 in | 21.4 in | 13 |
| December | 29.9°F | 16.3°F | 23.1°F | 2.90 in | 48.1 in | 16 |
Climate twins of Ontonagon
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).