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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Light Rain

68°F

20°C

Humidity 93%
Wind Speed S 8 mph
Barometer 29.96 in
Dewpoint 66°F (19°C)
Visibility 7.00 mi
Last update 18 May 12:54 pm CDT
Extended Forecast for

3 Miles WSW Forsyth IL

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 76. South wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 68. Breezy, with a south wind 18 to 20 mph, with gusts as high as 28 mph.

    Low: 68 °F

    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 82. Breezy, with a south southwest wind 16 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Breezy.
    Chance
    T-storms then
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 54. Northwest wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 67. North northeast wind 11 to 14 mph, with gusts as high as 20 mph.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. Northeast wind 11 to 14 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70. East wind around 14 mph, with gusts as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 76. South wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Cloudy, then gradually becoming partly cloudy, with a low around 68. Breezy, with a south wind 18 to 20 mph, with gusts as high as 28 mph.
Tuesday
Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 82. Breezy, with a south southwest wind 16 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 54. Northwest wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Wednesday
Partly sunny, with a high near 67. North northeast wind 11 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 45. Northeast wind 11 to 14 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 70. East wind around 14 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 73.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 57.
Saturday
A chance of showers. Partly sunny, with a high near 79.
Saturday Night
Mostly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 83.
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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:
12:46 pm CDT May 18, 2026
Forecast Valid:
1pm CDT May 18, 2026-6pm CDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

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