Harman US

South Haven, MI Weather & Growing Conditions

Tonight
51°F
Showers And Thunderstorms Likely
A chance of rain showers before 5am, then showers and thunderstorms likely. Mostly cloudy. Low around 51, with temperatures rising to around 56 overnight. East wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Tonight 51°F Showers And Thunderstorms Likely 6 to 9 mph E 73%
Saturday 72°F Showers And Thunderstorms 7 to 13 mph ESE 98%
Saturday Night 55°F Showers And Thunderstorms 3 to 7 mph ENE 91%
Sunday 70°F Rain Showers Likely 6 to 13 mph NE 67%
Sunday Night 47°F Chance Rain Showers 8 to 12 mph ENE 43%
Monday 66°F Chance Rain Showers 13 mph ENE 30%
Monday Night 46°F Chance Rain Showers then Mostly Cloudy 8 to 13 mph ENE 30%
Tuesday 65°F Partly Sunny then Slight Chance Rain Showers 9 to 13 mph ENE 19%
Tuesday Night 47°F Slight Chance Rain Showers 6 to 12 mph ENE 19%
Wednesday 66°F Slight Chance Rain Showers then Partly Sunny 7 to 10 mph NE 17%
Wednesday Night 48°F Mostly Cloudy 3 to 8 mph NE 9%
Thursday 69°F Partly Sunny 5 to 8 mph NNE 4%
Thursday Night 49°F Mostly Cloudy 2 to 7 mph NNE 5%
Friday 71°F Mostly Sunny 2 to 7 mph NNE 6%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for South Haven, MI

Last spring frost
Apr 17
First fall frost
Nov 5
Growing season
201 days
Hardiness zone
6b

Explore more for South Haven, MI: full frost dates · planting calendar · Michigan frost dates

Climate data from the nearest NOAA station, S Haven, Mi (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.