National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

South Haven, South Haven Area Regional Airport (KLWA)

Lat: 42.35°NLon: 86.26°WElev: 666ft.

Fog/Mist

68°F

20°C

Humidity 88%
Wind Speed E 5 mph
Barometer 30.20 in
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 17 Sep 8:35 pm EDT
Extended Forecast for

South Haven MI

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. Northeast wind around 7 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 73. East northeast wind 8 to 10 mph.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. East southeast wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 70. Southeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 70 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 58. East northeast wind around 8 mph. Chance of precipitation is 80%.

    Low: 58 °F

    Showers

  • Sunday

    Sunday: A 50 percent chance of showers. Mostly cloudy, with a high near 68.

    High: 68 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 58. Northeast wind around 7 mph.
Friday
Mostly sunny, with a high near 73. East northeast wind 8 to 10 mph.
Friday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 56. East southeast wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers and possibly a thunderstorm. High near 70. Southeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 58. East northeast wind around 8 mph. Chance of precipitation is 80%.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 68.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 53.
Monday
A chance of showers. Mostly cloudy, with a high near 64.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 51.
Tuesday
A chance of showers before 8am. Partly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 68.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Partly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Haven MI
 42.41°N 86.28°W (Elev. 597 ft)
Last Update:
8:03 pm EDT Sep 17, 2026
Forecast Valid:
8pm EDT Sep 17, 2026-6pm EDT Sep 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation