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.

Light Rain Fog/Mist

75°F

24°C

Humidity 90%
Wind Speed Calm
Barometer 29.92 in (1012.6 mb)
Dewpoint 72°F (22°C)
Visibility 1.50 mi
Last update 26 Jun 1:54 pm CDT
Extended Forecast for

Saint Peters MO

Flood Watch June 26, 02:08pm until June 26, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 26, 02:08pm until June 26, 07:00pm

    NOW until 7:00pm Fri

    Flood Watch

  • This Afternoon

    High: 81 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 67. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly before 3am. Partly cloudy, with a low around 72. Light and variable wind becoming southeast around 5 mph after midnight.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 93. South wind 6 to 9 mph.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 81. South wind around 6 mph. Chance of precipitation is 80%.
Tonight
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 67. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Saturday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 20%.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly before 3am. Partly cloudy, with a low around 72. Light and variable wind becoming southeast around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 93. South wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Clear, with a low around 77.
Wednesday
Sunny, with a high near 96.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Peters MO
 38.78°N 90.59°W (Elev. 492 ft)
Last Update:
1:51 pm CDT Jun 26, 2026
Forecast Valid:
2pm CDT Jun 26, 2026-6pm CDT Jul 2, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation