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.
This Afternoon
73°F
Mostly Cloudy
Mostly cloudy, with a high near 73. East northeast wind around 7 mph.
7-day forecast for South Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Cloudy | 7 mph ENE | 4% |
| Tonight | 54°F | Showers And Thunderstorms Likely | 7 to 12 mph E | 70% |
| Saturday | 71°F | Showers And Thunderstorms | 8 to 15 mph ESE | 88% |
| Saturday Night | 57°F | Showers And Thunderstorms | 7 mph E | 92% |
| Sunday | 69°F | Rain Showers Likely | 8 to 14 mph NE | 71% |
| Sunday Night | 51°F | Chance Rain Showers | 14 mph ENE | 43% |
| Monday | 66°F | Chance Rain Showers | 14 mph ENE | 30% |
| Monday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 12 to 15 mph ENE | 30% |
| Tuesday | 65°F | Partly Sunny then Slight Chance Rain Showers | 14 mph ENE | 20% |
| Tuesday Night | 50°F | Slight Chance Rain Showers | 9 to 14 mph ENE | 20% |
| Wednesday | 66°F | Slight Chance Rain Showers then Partly Sunny | 10 mph NE | 17% |
| Wednesday Night | 51°F | Mostly Cloudy | 6 to 10 mph NE | 9% |
| Thursday | 68°F | Partly Sunny | 9 mph NNE | 4% |
| Thursday Night | 52°F | Mostly Cloudy | 5 to 8 mph NNE | 4% |
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 Sep 18, 2026.