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.

Fog/Mist

51°F

11°C

Humidity 89%
Wind Speed Calm
Barometer 30.05 in (1017.6 mb)
Dewpoint 48°F (9°C)
Visibility 5.00 mi
Last update 20 Nov 1:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

  • This Afternoon

    This Afternoon: Patchy drizzle. Cloudy, with a high near 53. South wind 5 to 7 mph.

    High: 53 °F

    Patchy
    Drizzle

  • Tonight

    Tonight: Patchy drizzle and fog with a slight chance of rain before 10pm, then patchy drizzle between 10pm and 11pm, then a chance of rain after 11pm. Cloudy, with a low around 48. South southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 48 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: Rain likely, mainly after 8am. Patchy fog before noon. Otherwise, cloudy, with a high near 54. Northeast wind 6 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 54 °F

    Rain Likely
    and Patchy
    Fog

  • Friday Night

    Friday Night: A 40 percent chance of rain before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 36. North northeast wind 7 to 11 mph, with gusts as high as 16 mph.

    Low: 36 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53. North wind around 7 mph becoming west southwest in the afternoon.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. West southwest wind around 6 mph.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58. West southwest wind 6 to 8 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: A 50 percent chance of rain. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

Detailed Forecast

This Afternoon
Patchy drizzle. Cloudy, with a high near 53. South wind 5 to 7 mph.
Tonight
Patchy drizzle and fog with a slight chance of rain before 10pm, then patchy drizzle between 10pm and 11pm, then a chance of rain after 11pm. Cloudy, with a low around 48. South southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Friday
Rain likely, mainly after 8am. Patchy fog before noon. Otherwise, cloudy, with a high near 54. Northeast wind 6 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 40 percent chance of rain before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 36. North northeast wind 7 to 11 mph, with gusts as high as 16 mph.
Saturday
Sunny, with a high near 53. North wind around 7 mph becoming west southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 35. West southwest wind around 6 mph.
Sunday
Sunny, with a high near 58. West southwest wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 40.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 56.
Monday Night
Rain. Low around 47. Chance of precipitation is 80%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
1:21 pm CST Nov 20, 2025
Forecast Valid:
2pm CST Nov 20, 2025-6pm CST Nov 26, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation