Allegan, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allegan, a city in Allegan County, Michigan.
This Afternoon
74°F
Partly Sunny
Partly sunny, with a high near 74. South wind around 13 mph, with gusts as high as 25 mph.
7-day forecast for Allegan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Partly Sunny | 13 mph S | 7% |
| Tonight | 62°F | Mostly Cloudy then Slight Chance Rain Showers | 12 mph SSE | 24% |
| Wednesday | 70°F | Rain Showers | 14 mph S | 91% |
| Wednesday Night | 48°F | Slight Chance Rain Showers | 7 to 12 mph SW | 21% |
| Thursday | 57°F | Chance Rain Showers | 9 to 13 mph SW | 49% |
| Thursday Night | 42°F | Chance Rain Showers | 2 to 8 mph W | 49% |
| Friday | 53°F | Chance Rain Showers | 2 to 9 mph NNW | 42% |
| Friday Night | 33°F | Chance Rain Showers | 2 to 8 mph N | 26% |
| Saturday | 51°F | Partly Sunny | 1 to 7 mph NW | 11% |
| Saturday Night | 31°F | Partly Cloudy | 0 to 3 mph W | 5% |
| Sunday | 54°F | Slight Chance Rain Showers | 1 to 9 mph W | 22% |
| Sunday Night | 34°F | Slight Chance Rain Showers | 2 to 7 mph WNW | 22% |
| Monday | 59°F | Mostly Sunny | 2 to 10 mph W | 13% |
| Monday Night | 38°F | Partly Cloudy | 5 to 8 mph WSW | 5% |
Forecast source: National Weather Service (api.weather.gov) for Allegan (42.531, -85.839). Updated through the day.
Growing snapshot for Allegan
Last spring frost
May 4
First fall frost
Oct 15
Growing season
160 days
Hardiness zone
6a
More local growing data for Allegan: nearby ZIP 49010 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allegan 5Ne, Mi (5.3 mi from Allegan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.