Severe Thunderstorms Likely Across the Ozarks and Lower Ohio Valley

Severe thunderstorms capable of producing damaging wind gusts, large hail, and a few tornadoes, are likely to develop this afternoon from parts of the lower Ohio Valley into the southern Plains. An Enhanced Risk (Level 3 of 5) outlook has been issued. Further north, widespread rain showers are expected across portions of the Great Lakes and Northeast U.S. Read More >

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Thunderstorm Light Rain

68°F

20°C

Humidity 81%
Wind Speed NW 13 mph
Barometer 29.77 in (1007.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 18 Apr 5:54 pm CDT
Extended Forecast for

Grafton IL

Severe T-storm Watch until April 18, 08:00pm
Click here for hazard details and duration
...
  •  
    Severe T-storm Watch until April 18, 08:00pm

    NOW until
    8:00pm Thu

    Severe T-storm Watch

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 9pm. Some storms could be severe, with large hail and damaging winds.  Low around 46. Breezy, with an east wind 13 to 20 mph becoming northwest in the evening. Winds could gust as high as 33 mph.  Chance of precipitation is 100%.

    Severe
    Thunderstorms
    and Breezy
    then Mostly
    Cloudy

    Low: 46 °F

  • Friday

    Friday: Mostly sunny, with a high near 61. North wind 9 to 11 mph, with gusts as high as 21 mph.

    Mostly Sunny

    High: 61 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 44. Northwest wind 3 to 6 mph.

    Partly Cloudy

    Low: 44 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 58. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.

    Mostly Sunny

    High: 58 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 39. North wind 6 to 10 mph.

    Partly Cloudy

    Low: 39 °F

  • Sunday

    Sunday: Sunny, with a high near 60.

    Sunny

    High: 60 °F

  • Sunday
    Night

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

    Mostly Clear

    Low: 40 °F

  • Monday

    Monday: Sunny, with a high near 68.

    Sunny

    High: 68 °F

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 9pm. Some storms could be severe, with large hail and damaging winds. Low around 46. Breezy, with an east wind 13 to 20 mph becoming northwest in the evening. Winds could gust as high as 33 mph. Chance of precipitation is 100%.
Friday
Mostly sunny, with a high near 61. North wind 9 to 11 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 44. Northwest wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 58. Northwest wind 9 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 39. North wind 6 to 10 mph.
Sunday
Sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 40.
Monday
Sunny, with a high near 68.
Monday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 54.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
Sunny, with a high near 65.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 46.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 67.
Click Map For Forecast
Point Forecast:
Grafton IL
 38.98°N 90.42°W (Elev. 673 ft)
6:07 pm CDT Apr 18, 2024
6pm CDT Apr 18, 2024-6pm CDT Apr 25, 2024
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database