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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

South Haven, South Haven Area Regional Airport (KLWA)

Lat: 42.35°NLon: 86.26°WElev: 666ft.

Fair

70°F

21°C

Humidity 73%
Wind Speed S 6 mph
Barometer 30.17 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 28 Aug 10:15 am EDT
Extended Forecast for

Decatur MI

  • Today

    Today: Sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 82. South wind 3 to 8 mph.

    High: 82 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 66. South wind 3 to 6 mph.

    Low: 66 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 85. South southwest wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 85 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 80. Light and variable wind.
Tonight
Mostly clear, with a low around 57. Calm wind.
Saturday
Increasing clouds, with a high near 82. South wind 3 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 66. South wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 85. South southwest wind 8 to 11 mph, with gusts as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 70.
Monday
Partly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
A chance of showers after 2am. Partly cloudy, with a low around 70.
Wednesday
A chance of showers. Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Decatur MI
 42.11°N 85.98°W (Elev. 781 ft)
Last Update:
10:03 am EDT Aug 28, 2026
Forecast Valid:
10am EDT Aug 28, 2026-6pm EDT Sep 3, 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