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

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Light Rain

73°F

23°C

Humidity 84%
Wind Speed NE 3 mph
Barometer 30.02 in (1016.1 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 14 Oct 5:54 pm CDT
Extended Forecast for

Saint Peters MO

  • Tonight

    Tonight: A chance of rain and thunderstorms before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%.

    Low: 67 °F

    Chance Rain
    then Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 82. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 82 °F

    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 49. Northwest wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 56. Northwest wind around 18 mph, with gusts as high as 31 mph.

    High: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. Northwest wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain and thunderstorms before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%.
Thursday
Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 82. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 49. Northwest wind 7 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 56. Northwest wind around 18 mph, with gusts as high as 31 mph.
Friday Night
Mostly cloudy, with a low around 41. Northwest wind 7 to 13 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 40.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 43.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Peters MO
 38.78°N 90.59°W (Elev. 492 ft)
Last Update:
5:36 pm CDT Oct 14, 2026
Forecast Valid:
6pm CDT Oct 14, 2026-6pm CDT Oct 21, 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