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.

Fair

59°F

15°C

Humidity 94%
Wind Speed NE 7 mph
Barometer 30.25 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 18 Sep 4:35 am EDT
Extended Forecast for

South Haven MI

  • Today

    Today: Mostly sunny, with a high near 73. Northeast wind 7 to 9 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 52. East wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and possibly a thunderstorm after 2pm. High near 68. East southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 68 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 54. East northeast wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    Low: 54 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 67. East northeast wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers. Partly sunny, with a high near 64.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 73. Northeast wind 7 to 9 mph.
Tonight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 52. East wind around 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 before 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and possibly a thunderstorm after 2pm. High near 68. East southeast wind around 11 mph, with gusts as high as 21 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 54. East northeast wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 67. East northeast wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 64.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
A chance of showers. Partly sunny, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 50.
Thursday
Partly sunny, with a high near 67.
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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:
4:03 am EDT Sep 18, 2026
Forecast Valid:
4am EDT Sep 18, 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