Heat and Fire Weather Concerns West; Heavy Rain and Thunderstorms from Plains to mid-Atlantic

Thunderstorms and locally heavy rainfall is expected from the Central Plains to the Ohio Valley, mid-Atlantic and across the Southeast. Severe weather from the Upper Midwest to Central Plains increases on Friday. Major to Extreme HeatRisk continues across the Southern Plains to the lower Mississippi Valley late this week. Fire weather concerns for the northern Rockies and northern Plains today. Read More >

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

72°F

22°C

Humidity 87%
Wind Speed N 6 mph
Barometer 30.06 in (1017.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 10 Sep 11:54 am CDT
Extended Forecast for

Niantic IL

  • Today

    Today: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm.  High near 77. Light and variable wind.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm.  Mostly cloudy, with a low around 63. Light and variable wind.

    Low: 63 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 81. Southeast wind 5 to 8 mph.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65. South wind 3 to 6 mph.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Light and variable wind becoming south southwest 5 to 7 mph in the morning.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Light and variable wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 87. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 87 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 77. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 63. Light and variable wind.
Friday
Partly sunny, with a high near 81. Southeast wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 65. South wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 87. Light and variable wind becoming south southwest 5 to 7 mph in the morning.
Saturday Night
Partly cloudy, with a low around 64. Light and variable wind.
Sunday
Mostly sunny, with a high near 87. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 92.
Monday Night
A 30 percent chance of showers. Mostly clear, with a low around 68.
Tuesday
A chance of showers. Mostly sunny, with a high near 84.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 61.
Wednesday
A chance of showers. Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Niantic IL
 39.85°N 89.17°W (Elev. 600 ft)
11:36 am CDT Sep 10, 2026
11am CDT Sep 10, 2026-6pm CDT Sep 16, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database