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

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

56°F

13°C

Humidity 77%
Wind Speed NW 16 G 24 mph
Barometer 29.77 in (1008.0 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 26 Dec 12:54 pm CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 60. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 42. North northwest wind 5 to 8 mph becoming calm.

    Low: 42 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, cloudy, with a high near 56. Southeast wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 56 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A 50 percent chance of rain after midnight. Cloudy, with a low around 53. South wind 11 to 15 mph, with gusts as high as 22 mph.

    Low: 53 °F

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 3pm. High near 67. South wind 11 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely, mixing with snow after 9pm, then gradually ending. Mostly cloudy, with a low around 15. Windy, with a west northwest wind 21 to 30 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 15 °F

    Wintry Mix
    Likely and
    Blustery then
    Mostly Cloudy
    and Windy

  • Monday

    Monday: Partly sunny, with a high near 23. Windy, with a west northwest wind 22 to 30 mph, with gusts as high as 39 mph.

    High: 23 °F

    Partly Sunny
    and Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around 14. Blustery.

    Low: 14 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 60. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Tonight
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 42. North northwest wind 5 to 8 mph becoming calm.
Saturday
Patchy fog before 8am. Otherwise, cloudy, with a high near 56. Southeast wind 6 to 14 mph, with gusts as high as 21 mph.
Saturday Night
A 50 percent chance of rain after midnight. Cloudy, with a low around 53. South wind 11 to 15 mph, with gusts as high as 22 mph.
Sunday
Rain, with thunderstorms also possible after 3pm. High near 67. South wind 11 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Rain likely, mixing with snow after 9pm, then gradually ending. Mostly cloudy, with a low around 15. Windy, with a west northwest wind 21 to 30 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Partly sunny, with a high near 23. Windy, with a west northwest wind 22 to 30 mph, with gusts as high as 39 mph.
Monday Night
Mostly clear, with a low around 14. Blustery.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Partly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 13.
New Year's Day
Mostly sunny, with a high near 22.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
Last Update:
12:42 pm CST Dec 26, 2025
Forecast Valid:
1pm CST Dec 26, 2025-6pm CST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation