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 >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Mostly Cloudy

79°F

26°C

Humidity 74%
Wind Speed NE 6 mph
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 10 Sep 4:50 pm CDT
Extended Forecast for

New Douglas IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 78. Light north wind.

    High: 78 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: A 20 percent chance of showers after 1pm.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 82. Calm wind becoming east around 5 mph.

    High: 82 °F

    Patchy Fog
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 87. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Light north wind.
Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 64. Calm wind.
Friday
A 20 percent chance of showers after 1pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 82. Calm wind becoming east around 5 mph.
Friday Night
Mostly cloudy, with a low around 65. Calm wind.
Saturday
Mostly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 66.
Sunday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 68.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Wednesday
A 50 percent chance of showers. Mostly sunny, with a high near 86.
Wednesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 64.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
New Douglas IL
 38.98°N 89.67°W (Elev. 620 ft)
2:25 pm CDT Sep 10, 2026
5pm CDT Sep 10, 2026-6pm CDT Sep 17, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database