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

Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

South Haven, South Haven Area Regional Airport (KLWA)

Lat: 42.35°NLon: 86.26°WElev: 666ft.

Light Snow Haze

16°F

-9°C

Humidity 79%
Wind Speed NE 7 mph
Barometer 30.19 in
Dewpoint 10°F (-12°C)
Visibility 5.00 mi
Wind Chill6°F (-14°C)
Last update 29 Jan 4:15 am EST
Extended Forecast for

4 Miles N Decatur MI

Winter Weather Advisory January 29, 04:22am until January 29, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 29, 04:22am until January 29, 01:00pm

    NOW until 1:00pm Thu

    Winter Weather Advisory

  • Overnight

    Low: 11 °F

    Chance Snow
    Showers

  • Thursday

    Thursday: A 30 percent chance of snow showers, mainly after 4pm. Mostly cloudy, with a high near 18. Calm wind becoming west around 5 mph in the afternoon.

    High: 18 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers, mainly before 7pm. Mostly cloudy, with a low around 2. Light and variable wind.

    Low: 2 °F

    Chance Snow
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 14. Wind chill values as low as -5. Light and variable wind becoming north northeast around 6 mph in the afternoon.

    High: 14 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around -1. Calm wind.

    Low: -1 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around -2.

    Low: -2 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

Detailed Forecast

Overnight
A 50 percent chance of snow showers. Cloudy, with a steady temperature around 11. West wind around 5 mph.
Thursday
A 30 percent chance of snow showers, mainly after 4pm. Mostly cloudy, with a high near 18. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A 30 percent chance of snow showers, mainly before 7pm. Mostly cloudy, with a low around 2. Light and variable wind.
Friday
Mostly sunny, with a high near 14. Wind chill values as low as -5. Light and variable wind becoming north northeast around 6 mph in the afternoon.
Friday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around -1. Calm wind.
Saturday
Mostly sunny, with a high near 17.
Saturday Night
Mostly clear, with a low around -2.
Sunday
Mostly sunny, with a high near 25.
Sunday Night
A chance of snow showers after 1am. Partly cloudy, with a low around 10.
Monday
A chance of snow showers. Mostly cloudy, with a high near 26.
Monday Night
Mostly cloudy, with a low around 15.
Tuesday
Mostly cloudy, with a high near 28.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 9.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Decatur MI
 42.17°N 85.98°W (Elev. 758 ft)
Last Update:
4:11 am EST Jan 29, 2026
Forecast Valid:
4am EST Jan 29, 2026-6pm EST Feb 4, 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