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

59°F

15°C

Humidity 96%
Wind Speed Calm
Barometer 30.01 in (1015.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 15 Jun 3:54 am CDT
Extended Forecast for

O'Fallon MO

  • Today

    Today: Sunny, with a high near 91. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Southeast wind around 7 mph.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 97. Heat index values as high as 103. South wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 97 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. South wind 6 to 8 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. South wind 6 to 13 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 74.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

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

    Low: 72 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 30%.

    High: 93 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 91. Calm wind becoming southeast 5 to 8 mph in the morning.
Tonight
Partly cloudy, with a low around 70. Southeast wind around 7 mph.
Sunday
Mostly sunny and hot, with a high near 97. Heat index values as high as 103. South wind 6 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 75. South wind 6 to 8 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. South wind 6 to 13 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 74.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 72.
Juneteenth
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 72.
Friday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 96.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
O'Fallon MO
 38.79°N 90.74°W (Elev. 597 ft)
Last Update:
3:21 am CDT Jun 15, 2024
Forecast Valid:
4am CDT Jun 15, 2024-6pm CDT Jun 21, 2024
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation