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

80°F

27°C

Humidity 82%
Wind Speed S 8 mph
Barometer 29.91 in (1011.7 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 21 Jun 2:54 am CDT
Extended Forecast for

2 Miles SW Cave MO

Heat Advisory June 21, 12:00pm until June 24, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Clear, with a low around 76. South wind around 8 mph.

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 95. Heat index values as high as 107. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 75. South wind 7 to 11 mph, with gusts as high as 23 mph.

    Low: 75 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Heat index values as high as 105. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 74. South wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.

    High: 93 °F

    Slight Chance
    T-storms

  • Tuesday Night

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

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 76. South wind around 8 mph.
Saturday
Sunny, with a high near 95. Heat index values as high as 107. Southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Saturday Night
Clear, with a low around 75. South wind 7 to 11 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 95. Heat index values as high as 105. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday Night
Clear, with a low around 74. South wind 6 to 9 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Tuesday Night
Partly cloudy, with a low around 73.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Cave MO
 39°N 91.07°W (Elev. 600 ft)
Last Update:
2:51 am CDT Jun 21, 2025
Forecast Valid:
3am CDT Jun 21, 2025-6pm CDT Jun 27, 2025
 
Forecast Discussion
 
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