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.

Fair

38°F

3°C

Humidity 86%
Wind Speed SW 3 mph
Barometer 30.07 in (1018.6 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 8 Mar 12:54 am CDT
Extended Forecast for

Saint Peters MO

  • Overnight

    Overnight: Mostly clear, with a low around 37. Southwest wind 3 to 5 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. Southwest wind 5 to 9 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 47. Southwest wind 6 to 8 mph.

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 78. South wind 7 to 13 mph, with gusts as high as 23 mph.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Southwest wind 7 to 10 mph.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 100%.

    Low: 52 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before noon, then a chance of rain. High near 66. Chance of precipitation is 100%.

    High: 66 °F

    Rain then
    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow before midnight. Mostly clear, with a low around 32. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 37. Southwest wind 3 to 5 mph.
Sunday
Sunny, with a high near 67. Southwest wind 5 to 9 mph.
Sunday Night
Clear, with a low around 47. Southwest wind 6 to 8 mph.
Monday
Sunny, with a high near 78. South wind 7 to 13 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 61. Southwest wind 7 to 10 mph.
Tuesday
Rain likely, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 100%.
Wednesday
Rain and possibly a thunderstorm before noon, then a chance of rain. High near 66. Chance of precipitation is 100%.
Wednesday Night
A slight chance of rain and snow before midnight. Mostly clear, with a low around 32. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 54.
Thursday Night
Mostly cloudy, with a low around 46.
Friday
Partly sunny, with a high near 67.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Peters MO
 38.78°N 90.59°W (Elev. 492 ft)
Last Update:
12:26 am CST Mar 8, 2026
Forecast Valid:
12am CST Mar 8, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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