Fennville, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fennville, a city in Allegan County, Michigan.
Tonight
52°F
Showers And Thunderstorms
Rain showers likely before 5am, then showers and thunderstorms. Mostly cloudy. Low around 52, with temperatures rising to around 55 overnight. East wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Fennville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Showers And Thunderstorms | 6 to 9 mph E | 78% |
| Saturday | 70°F | Showers And Thunderstorms | 8 to 12 mph ESE | 98% |
| Saturday Night | 56°F | Showers And Thunderstorms | 3 to 8 mph E | 89% |
| Sunday | 69°F | Rain Showers Likely | 6 to 13 mph NE | 59% |
| Sunday Night | 48°F | Chance Rain Showers | 8 to 12 mph NE | 39% |
| Monday | 65°F | Chance Rain Showers | 13 mph ENE | 28% |
| Monday Night | 47°F | Chance Rain Showers then Mostly Cloudy | 8 to 13 mph ENE | 28% |
| Tuesday | 64°F | Partly Sunny then Slight Chance Rain Showers | 10 to 14 mph ENE | 18% |
| Tuesday Night | 47°F | Slight Chance Rain Showers | 6 to 14 mph ENE | 18% |
| Wednesday | 65°F | Slight Chance Rain Showers then Partly Sunny | 7 to 10 mph NE | 18% |
| Wednesday Night | 48°F | Mostly Cloudy | 3 to 9 mph NE | 9% |
| Thursday | 68°F | Partly Sunny | 5 to 8 mph NNE | 3% |
| Thursday Night | 49°F | Mostly Cloudy | 2 to 7 mph NE | 4% |
| Friday | 70°F | Mostly Sunny | 2 to 7 mph NNE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Fennville (42.595, -86.105). Updated through the day.
Growing snapshot for Fennville
Last spring frost
Apr 28
First fall frost
Oct 21
Growing season
175 days
Hardiness zone
6b
More local growing data for Fennville: nearby ZIP 49408 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Holland Tulip City Ap, Mi (12.1 mi from Fennville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.