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 S Niantic IL

  • This Afternoon

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

    High: 53 °F

    Patchy
    Drizzle

  • Tonight

    Tonight: Patchy drizzle before 7pm, then a chance of rain, mainly after 3am. Patchy fog. Otherwise, cloudy, with a low around 48. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.

    Low: 48 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: Rain likely. Patchy fog before noon. Otherwise, cloudy, with a high near 55. East northeast wind 6 to 11 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: 55 °F

    Rain Likely
    and Patchy
    Fog

  • Friday Night

    Friday Night: A 40 percent chance of rain. Cloudy, then gradually becoming partly cloudy, with a low around 36. North northeast wind 6 to 10 mph, with gusts as high as 16 mph.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 54. North wind around 6 mph becoming west in the afternoon.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 34. West southwest wind around 5 mph.

    Low: 34 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. West southwest wind 5 to 7 mph.

    High: 59 °F

    Sunny

  • Sunday Night

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

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: A 50 percent chance of rain. Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

Detailed Forecast

This Afternoon
Patchy drizzle. Cloudy, with a high near 53. South southeast wind 5 to 7 mph.
Tonight
Patchy drizzle before 7pm, then a chance of rain, mainly after 3am. Patchy fog. Otherwise, cloudy, with a low around 48. Southeast wind around 5 mph becoming calm. Chance of precipitation is 50%.
Friday
Rain likely. Patchy fog before noon. Otherwise, cloudy, with a high near 55. East northeast wind 6 to 11 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. Cloudy, then gradually becoming partly cloudy, with a low around 36. North northeast wind 6 to 10 mph, with gusts as high as 16 mph.
Saturday
Sunny, with a high near 54. North wind around 6 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 34. West southwest wind around 5 mph.
Sunday
Sunny, with a high near 59. West southwest wind 5 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 57.
Monday Night
Rain. Low around 46. Chance of precipitation is 80%.
Tuesday
A chance of rain. Partly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Niantic IL
 39.8°N 89.14°W (Elev. 561 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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Chance of Precipitation