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.

Fair

67°F

19°C

Humidity 81%
Wind Speed S 20 G 25 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 6 Mar 7:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 60. Breezy, with a south wind 17 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Slight Chance
    Showers then
    Showers and
    Breezy

  • Saturday

    Saturday: Showers and thunderstorms before noon, then a slight chance of showers between noon and 1pm. Temperature rising to near 65 by 11am, then falling to around 51 during the remainder of the day. Breezy, with a south southwest wind 16 to 21 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F⇓

    Breezy.
    Showers then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35. West northwest wind 7 to 15 mph, with gusts as high as 22 mph.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 62. Southwest wind 8 to 18 mph, with gusts as high as 23 mph.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. South southwest wind around 14 mph, with gusts as high as 22 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 74. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 26 mph.

    High: 74 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: A 30 percent chance of showers after midnight. Mostly clear, with a low around 53. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Mostly Clear
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after noon. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers. Low around 45. Chance of precipitation is 90%.

    Low: 45 °F

    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 60. Breezy, with a south wind 17 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms before noon, then a slight chance of showers between noon and 1pm. Temperature rising to near 65 by 11am, then falling to around 51 during the remainder of the day. Breezy, with a south southwest wind 16 to 21 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Partly cloudy, with a low around 35. West northwest wind 7 to 15 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 62. Southwest wind 8 to 18 mph, with gusts as high as 23 mph.
Sunday Night
Clear, with a low around 45. South southwest wind around 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 74. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 26 mph.
Monday Night
A 30 percent chance of showers after midnight. Mostly clear, with a low around 53. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 74. Chance of precipitation is 80%.
Tuesday Night
Showers. Low around 45. Chance of precipitation is 90%.
Wednesday
Showers likely, mainly before noon. Cloudy, with a high near 54. Chance of precipitation is 60%.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 37.
Friday
Partly sunny, with a high near 62. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
8:37 pm CST Mar 6, 2026
Forecast Valid:
8pm CST Mar 6, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation