Harman US

South Haven, MI Weather & Growing Conditions

This Afternoon
72°F
Patchy Fog
Rain showers likely and patchy fog before 5pm, then patchy fog and showers and thunderstorms likely. Mostly cloudy. High near 72, with temperatures falling to around 70 in the afternoon. East southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 72°F Patchy Fog 8 mph ESE 61%
Tonight 58°F Patchy Fog 5 mph E 87%
Sunday 71°F Showers And Thunderstorms 5 to 12 mph NE 78%
Sunday Night 48°F Mostly Cloudy 9 mph ENE 7%
Monday 66°F Slight Chance Rain Showers 12 mph ENE 19%
Monday Night 47°F Mostly Cloudy 8 to 12 mph ENE 13%
Tuesday 65°F Mostly Cloudy 9 to 13 mph ENE 13%
Tuesday Night 47°F Mostly Cloudy 7 to 12 mph ENE 14%
Wednesday 66°F Chance Rain Showers 8 to 12 mph ENE 31%
Wednesday Night 48°F Chance Rain Showers then Mostly Cloudy 5 to 9 mph ENE 31%
Thursday 68°F Partly Sunny 5 to 8 mph ENE 4%
Thursday Night 49°F Mostly Cloudy 2 to 6 mph ENE 4%
Friday 71°F Partly Sunny 2 to 7 mph NE 2%
Friday Night 49°F Partly Cloudy 2 to 7 mph NE 2%

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.