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.

Rain Fog/Mist

70°F

21°C

Humidity 97%
Wind Speed S 5 mph
Barometer 29.99 in (1014.8 mb)
Dewpoint 69°F (21°C)
Visibility 4.00 mi
Last update 14 Oct 6:54 am CDT
Extended Forecast for

Saint Peters MO

  • Today

    Today: Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 77. West wind around 6 mph becoming north in the afternoon. Chance of precipitation is 80%.

    High: 77 °F

    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 66. Light and variable wind becoming east around 6 mph after midnight. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms, mainly before 2pm, then showers likely and possibly a thunderstorm after 5pm. High near 82. East wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 90%.

    High: 82 °F

    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 49. Northwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.

    Low: 49 °F

    Showers

  • Friday

    Friday: Mostly sunny, with a high near 60. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 32 mph.

    High: 60 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before noon, then a chance of showers and thunderstorms after noon. High near 77. West wind around 6 mph becoming north in the afternoon. Chance of precipitation is 80%.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 66. Light and variable wind becoming east around 6 mph after midnight. Chance of precipitation is 40%.
Thursday
Showers and thunderstorms, mainly before 2pm, then showers likely and possibly a thunderstorm after 5pm. High near 82. East wind 6 to 10 mph becoming southwest in the afternoon. Chance of precipitation is 90%.
Thursday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 49. Northwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.
Friday
Mostly sunny, with a high near 60. Breezy, with a northwest wind 18 to 20 mph, with gusts as high as 32 mph.
Friday Night
Mostly clear, with a low around 40.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 40.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 78.
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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:
5:06 am CDT Oct 14, 2026
Forecast Valid:
7am CDT Oct 14, 2026-6pm CDT Oct 20, 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