Allegan, MI Weather & Growing Conditions
This Afternoon
69°F
Rain Showers Likely
Rain showers likely before 5pm. Mostly cloudy. High near 69, with temperatures falling to around 63 in the afternoon. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Rain Showers Likely | 10 mph SW | 69% |
| Tonight | 47°F | Cloudy then Slight Chance Rain Showers | 7 to 12 mph SW | 21% |
| Thursday | 55°F | Rain Showers Likely | 12 mph SW | 64% |
| Thursday Night | 39°F | Rain Showers Likely | 3 to 8 mph WNW | 64% |
| Friday | 50°F | Chance Rain Showers | 8 mph NNW | 42% |
| Friday Night | 32°F | Chance Rain Showers then Mostly Cloudy | 2 to 7 mph NNW | 40% |
| Saturday | 51°F | Mostly Sunny | 1 to 7 mph NW | 5% |
| Saturday Night | 32°F | Partly Cloudy | 0 to 3 mph W | 2% |
| Sunday | 54°F | Mostly Sunny then Slight Chance Rain Showers | 2 to 10 mph W | 17% |
| Sunday Night | 34°F | Slight Chance Rain Showers then Partly Cloudy | 1 to 7 mph W | 17% |
| Monday | 58°F | Mostly Sunny | 1 to 9 mph WSW | 5% |
| Monday Night | 39°F | Partly Cloudy | 7 mph WSW | 2% |
| Tuesday | 60°F | Mostly Sunny | 5 to 9 mph W | 8% |
| Tuesday Night | 35°F | Partly Cloudy | 0 to 5 mph NW | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Allegan, MI
Last spring frost
May 4
First fall frost
Oct 15
Growing season
160 days
Hardiness zone
6a
Explore more for Allegan, MI: full frost dates · planting calendar · Michigan frost dates
Climate data from the nearest NOAA station, Allegan 5Ne, Mi (5.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.