South Haven, MI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Haven, a city in Van Buren County, Michigan.
Overnight
61°F
Chance Rain Showers
A chance of rain showers after 4am. Mostly cloudy. Low around 61, with temperatures rising to around 63 overnight. South southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
7-day forecast for South Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Chance Rain Showers | 14 mph SSE | 29% |
| Wednesday | 66°F | Rain Showers | 14 mph SSW | 76% |
| Wednesday Night | 47°F | Slight Chance Rain Showers | 15 mph SW | 17% |
| Thursday | 55°F | Rain Showers Likely | 14 to 17 mph SW | 60% |
| Thursday Night | 40°F | Rain Showers Likely | 13 mph WNW | 68% |
| Friday | 52°F | Rain Showers Likely | 14 mph N | 59% |
| Friday Night | 36°F | Chance Rain Showers | 7 to 13 mph N | 50% |
| Saturday | 51°F | Mostly Sunny | 9 mph NNW | 13% |
| Saturday Night | 37°F | Partly Cloudy | 8 mph WNW | 2% |
| Sunday | 53°F | Mostly Sunny then Slight Chance Rain Showers | 9 to 13 mph W | 17% |
| Sunday Night | 40°F | Slight Chance Rain Showers then Partly Cloudy | 7 to 10 mph WNW | 17% |
| Monday | 56°F | Mostly Sunny | 6 to 10 mph WSW | 7% |
| Monday Night | 43°F | Partly Cloudy | 9 mph WSW | 2% |
| Tuesday | 57°F | Mostly Sunny | 7 to 10 mph WNW | 6% |
Forecast source: National Weather Service (api.weather.gov) for South Haven (42.401, -86.268). Updated through the day.
Growing snapshot for South Haven
Last spring frost
Apr 17
First fall frost
Nov 5
Growing season
201 days
Hardiness zone
6b
More local growing data for South Haven: nearby ZIP 49090 weather · frost dates · planting calendar · Michigan frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, S Haven, Mi (3.5 mi from South Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.