National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

83°F

28°C

Humidity 65%
Wind Speed S 7 mph
Barometer 29.93 in (1012.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 16 Jun 8:54 am CDT
Extended Forecast for

O'Fallon MO

  • Today

    Today: Sunny, with a high near 96. Heat index values as high as 102. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 96 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind 5 to 8 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 95. Heat index values as high as 104. South wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75. South wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 96. Heat index values as high as 102. Southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 75. South wind 5 to 8 mph.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 95. Heat index values as high as 104. South wind 6 to 14 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 75. South wind 9 to 13 mph, with gusts as high as 23 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South wind 9 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Partly cloudy, with a low around 73.
Juneteenth
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
Mostly sunny, with a high near 96.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Mostly sunny and hot, with a high near 98.
Friday Night
Partly cloudy, with a low around 75.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 98.
Click Map For Forecast
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
O'Fallon MO
 38.81°N 90.71°W (Elev. 502 ft)
Last Update:
8:22 am CDT Jun 16, 2024
Forecast Valid:
9am CDT Jun 16, 2024-6pm CDT Jun 22, 2024
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation