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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.