Allegan, MI
Climate overview — based on NOAA 1991-2020 normals from ALLEGAN 5NE, MI US.
Year-round temperatures (°F)
Avg high
Avg low
Climate summary
Allegan has an annual average temperature of 47.4°F with about 0 inches of precipitation per year. The warmest month is July (average high 81.8°F), and the coldest is January (average low 15.7°F).
Pleasant months
2 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
46.9°F
warmest to coldest month
Best time to visit Allegan
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Allegan'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.
| 1920s | 44 | |
| 1930s | 87 | |
| 1940s | 46 | |
| 1950s | 48 | |
| 1960s | 36 | |
| 1970s | 36 | |
| 1980s | 37 | |
| 1990s | 19 | |
| 2000s | 13 |
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 | 30.2°F | 15.7°F | 22.9°F | in | — | — |
| February | 32.8°F | 16.0°F | 24.4°F | in | — | — |
| March | 43.4°F | 24.1°F | 33.7°F | in | — | — |
| April | 57.5°F | 34.3°F | 45.9°F | in | — | — |
| May | 68.3°F | 45.2°F | 56.8°F | in | — | — |
| June | 77.9°F | 55.4°F | 66.7°F | in | — | — |
| July | 81.8°F | 57.8°F | 69.8°F | in | — | — |
| August | 80.1°F | 57.6°F | 68.9°F | in | — | — |
| September | 73.2°F | 50.0°F | 61.6°F | in | — | — |
| October | 60.9°F | 40.1°F | 50.5°F | in | — | — |
| November | 46.9°F | 30.9°F | 38.9°F | in | — | — |
| December | 35.1°F | 22.3°F | 28.7°F | in | — | — |
Last spring / first fall frost
All-time recordsHottest, coldest, wettest
Planting calendarWhat to plant, and when