South Haven, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Haven, a city in Stearns County, Minnesota.
This Afternoon
59°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a high near 59. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for South Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Showers And Thunderstorms | 15 mph E | 76% |
| Tonight | 55°F | Rain Showers | 10 to 15 mph E | 77% |
| Saturday | 63°F | Chance Rain Showers then Chance Drizzle | 10 mph NE | 33% |
| Saturday Night | 52°F | Partly Cloudy | 5 mph NE | 0% |
| Sunday | 67°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Sunday Night | 49°F | Mostly Cloudy | 5 to 10 mph ENE | 5% |
| Monday | 63°F | Mostly Cloudy | 5 mph ENE | 8% |
| Monday Night | 44°F | Mostly Cloudy | 0 to 5 mph ENE | 4% |
| Tuesday | 64°F | Mostly Sunny | 0 to 5 mph ESE | 2% |
| Tuesday Night | 45°F | Partly Cloudy | 0 to 5 mph SE | 1% |
| Wednesday | 66°F | Sunny | 0 to 5 mph SE | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 5 mph SSE | 12% |
| Thursday | 69°F | Partly Sunny | 0 to 5 mph SSE | 14% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph SSE | 6% |
Forecast source: National Weather Service (api.weather.gov) for South Haven (45.293, -94.217). Updated through the day.
Growing snapshot for South Haven
Last spring frost
May 2
First fall frost
Oct 5
Growing season
156 days
Hardiness zone
4b
More local growing data for South Haven: nearby ZIP 55382 weather · frost dates · planting calendar · Minnesota frost dates
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Climate data from the nearest NOAA station, Kimball 3N, Mn (6.3 mi from South Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.