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.

Light Rain Fog

48°F

9°C

Humidity 100%
Wind Speed SE 7 mph
Barometer 30.00 in (1016.0 mb)
Dewpoint 48°F (9°C)
Visibility 0.50 mi
Wind Chill45°F (7°C)
Last update 4 Mar 8:54 pm CST
Extended Forecast for

6 Miles WSW Bethany IL

Dense Fog Advisory March 4, 09:36pm until March 5, 06:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory March 4, 09:36pm until March 5, 06:00am

    NOW until 6:00am Thu

    Dense Fog Advisory

  • Tonight

    Low: 49 °F

    Showers and
    Patchy Dense
    Fog

  • Thursday

    Thursday: Showers likely, mainly before 11am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 63. Southwest wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 51. Light and variable wind becoming south southeast 5 to 9 mph after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 75. Breezy, with a south wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 40%.

    High: 75 °F

    Breezy.
    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 55. Breezy, with a south wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Chance
    T-storms then
    Showers and
    Breezy

  • Saturday

    Saturday: Showers likely before noon. Mostly cloudy, with a high near 63. Southwest wind 11 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Showers
    Likely then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Northwest wind 5 to 9 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Patchy dense fog. Low around 49. East wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Showers likely, mainly before 11am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 63. Southwest wind 6 to 9 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 51. Light and variable wind becoming south southeast 5 to 9 mph after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Breezy, with a south wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 40%.
Friday Night
A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 55. Breezy, with a south wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely before noon. Mostly cloudy, with a high near 63. Southwest wind 11 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Partly cloudy, with a low around 38. Northwest wind 5 to 9 mph.
Sunday
Sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 72.
Monday Night
A chance of rain and thunderstorms. Mostly clear, with a low around 58.
Tuesday
Rain. Mostly cloudy, with a high near 72. Breezy.
Tuesday Night
Rain. Mostly cloudy, with a low around 45. Breezy.
Wednesday
Rain likely. Mostly cloudy, with a high near 55. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WSW Bethany IL
 39.62°N 88.84°W (Elev. 689 ft)
Last Update:
9:26 pm CST Mar 4, 2026
Forecast Valid:
9pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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