Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

79°F

26°C

Humidity 42%
Wind Speed NW 8 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 Jun 5:54 pm CDT
Extended Forecast for

2 Miles SSW Niantic IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch
  • Tonight

    Tonight: Partly cloudy, with a low around 61. Northwest wind 5 to 7 mph becoming calm.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms, mainly after 9am. Some of the storms could produce heavy rainfall.  High near 75. East southeast wind 7 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 75 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Some of the storms could produce heavy rainfall.  Low around 61. Southeast wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Heavy Rain
    then Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 74. North wind around 14 mph, with gusts as high as 20 mph.

    High: 74 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. North northeast wind 3 to 5 mph.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. Northwest wind 5 to 7 mph becoming calm.
Sunday
Showers and thunderstorms, mainly after 9am. Some of the storms could produce heavy rainfall. High near 75. East southeast wind 7 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 3am. Some of the storms could produce heavy rainfall. Low around 61. Southeast wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Mostly cloudy, with a high near 74. North wind around 14 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 55. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 77. North northeast wind 3 to 5 mph.
Tuesday Night
Mostly clear, with a low around 58. Light and variable wind.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 80.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Saturday
A chance of showers. Partly sunny, with a high near 82.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Niantic IL
 39.83°N 89.17°W (Elev. 600 ft)
6:11 pm CDT Jun 20, 2026
6pm CDT Jun 20, 2026-6pm CDT Jun 27, 2026
 
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Additional Resources

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