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.

Overcast

46°F

8°C

Humidity 89%
Wind Speed W 10 mph
Barometer 29.76 in (1007.6 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 14 Jan 1:54 am CST
Extended Forecast for

Weldon Spring MO

  • Overnight

    Overnight: Mostly cloudy, with a low around 38. West wind 5 to 10 mph, with gusts as high as 24 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles and flurries before 9am, then a chance of flurries between 9am and 10am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 30 by 5pm. Breezy, with a north wind 14 to 20 mph, with gusts as high as 31 mph.

    High: 38 °F⇓

    Breezy.
    Chance
    Sprinkles/Flurries
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 16. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.

    Low: 16 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 34. Northwest wind around 7 mph becoming south in the afternoon.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 28. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 24 mph.

    Low: 28 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 43. Breezy.

    High: 43 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 38. West wind 5 to 10 mph, with gusts as high as 24 mph.
Wednesday
A chance of sprinkles and flurries before 9am, then a chance of flurries between 9am and 10am. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 30 by 5pm. Breezy, with a north wind 14 to 20 mph, with gusts as high as 31 mph.
Wednesday Night
Clear, with a low around 16. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.
Thursday
Sunny, with a high near 34. Northwest wind around 7 mph becoming south in the afternoon.
Thursday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 28. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 24 mph.
Friday
Partly sunny, with a high near 43. Breezy.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Mostly clear, with a low around 17.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 12.
Tuesday
Mostly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
Last Update:
2:21 am CST Jan 14, 2026
Forecast Valid:
2am CST Jan 14, 2026-6pm CST Jan 20, 2026
 
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Additional Resources

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Chance of Precipitation