Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Mostly Cloudy

83°F

28°C

Humidity 55%
Wind Speed NW 7 mph
Barometer 30.04 in (1016.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 Aug 3:54 pm CDT
Extended Forecast for

Elsah IL

  • Tonight

    Tonight: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 64. North wind 5 to 7 mph becoming calm  in the evening.

    Low: 64 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the morning.

    High: 87 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Increasing clouds, with a low around 69. South wind around 6 mph becoming light and variable.

    Low: 69 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 84. South wind around 6 mph becoming northeast in the afternoon.

    High: 84 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 66. Northeast wind 3 to 7 mph.

    Low: 66 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am.  Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 64. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming southwest around 5 mph in the morning.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 69. South wind around 6 mph becoming light and variable.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84. South wind around 6 mph becoming northeast in the afternoon.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Northeast wind 3 to 7 mph.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 85.
Friday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 66.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 64.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Elsah IL
 38.95°N 90.33°W (Elev. 554 ft)
1:26 pm CDT Aug 17, 2026
4pm CDT Aug 17, 2026-6pm CDT Aug 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database