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.

Partly Cloudy

26°F

-3°C

Humidity 55%
Wind Speed NW 18 G 31 mph
Barometer 30.17 in (1022.6 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 19 Jan 2:54 am CST
Extended Forecast for

Weldon Spring MO

  • Overnight

    Overnight: Partly cloudy, with a low around 11. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.

    Low: 11 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 21. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 21 °F

    Sunny and
    Blustery then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 13. West wind around 5 mph becoming light and variable.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 38. South wind 5 to 7 mph.

    High: 38 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29. South wind 6 to 13 mph becoming southwest after midnight. Winds could gust as high as 24 mph.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 11. Northwest wind 14 to 18 mph, with gusts as high as 29 mph.
M.L.King Day
Sunny, with a high near 21. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 28 mph.
Monday Night
Mostly clear, with a low around 13. West wind around 5 mph becoming light and variable.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 38. South wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 29. South wind 6 to 13 mph becoming southwest after midnight. Winds could gust as high as 24 mph.
Wednesday
Sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 22.
Thursday
Sunny, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 17.
Friday
Mostly cloudy, with a high near 26.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 1.
Saturday
A 20 percent chance of snow. Partly sunny and cold, with a high near 15.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 25.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Weldon Spring MO
 38.72°N 90.65°W (Elev. 584 ft)
Last Update:
3:25 am CST Jan 19, 2026
Forecast Valid:
3am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
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