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

23°C

73°F

Humidity 62%
Wind Speed SW 24 km/h
Barometer 1013.0 mb (29.93 in)
Dewpoint 15°C (59°F)
Visibility 16 km
Last update 16 Apr 11:54 am CDT
Extended Forecast for

Saint Peters MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 28. West wind 8 to 11 km/h.

    High: 28 °C

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 16. South wind 3 to 8 km/h.

    Low: 16 °C

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 29. South wind 10 to 15 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 39 km/h.

    High: 29 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 9. South wind 18 to 21 km/h becoming west after midnight. Winds could gust as high as 37 km/h. Chance of precipitation is 100%.

    Low: 9 °C

    Showers then
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 16. Northwest wind around 23 km/h, with gusts as high as 39 km/h. Chance of precipitation is 40%.

    High: 16 °C

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 4.

    Low: 4 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 19.

    High: 19 °C

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7.

    Low: 7 °C

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 23.

    High: 23 °C

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 28. West wind 8 to 11 km/h.
Tonight
Mostly clear, with a low around 16. South wind 3 to 8 km/h.
Friday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 29. South wind 10 to 15 km/h increasing to 18 to 23 km/h in the afternoon. Winds could gust as high as 39 km/h.
Friday Night
Showers and thunderstorms, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 9. South wind 18 to 21 km/h becoming west after midnight. Winds could gust as high as 37 km/h. Chance of precipitation is 100%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 16. Northwest wind around 23 km/h, with gusts as high as 39 km/h. Chance of precipitation is 40%.
Saturday Night
Mostly clear, with a low around 4.
Sunday
Sunny, with a high near 19.
Sunday Night
Mostly clear, with a low around 7.
Monday
Sunny, with a high near 23.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 13.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 27.
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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 m)
Last Update:
12:06 pm CDT Apr 16, 2026
Forecast Valid:
12pm CDT Apr 16, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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