National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Light Rain

47°F

8°C

Humidity 90%
Wind Speed W 12 mph
Barometer 29.83 in (1010.1 mb)
Dewpoint 44°F (7°C)
Visibility 9.00 mi
Wind Chill42°F (6°C)
Last update 13 Jan 9:51 pm CST
Extended Forecast for

Saint Ann MO

  • Tonight

    Tonight: Rain likely before 4am, then a chance of sprinkles between 4am and 5am. Mostly cloudy, with a low around 38. West wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles, mixing with flurries after 8am, then gradually ending. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 31 by 5pm. Breezy, with a north wind 15 to 20 mph, with gusts as high as 31 mph.

    High: 39 °F⇓

    Breezy.
    Chance
    Sprinkles/Flurries
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 19. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.

    Low: 19 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 34. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly 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 23 mph.

    Low: 28 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Saturday Night

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

    Low: 11 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain likely before 4am, then a chance of sprinkles between 4am and 5am. Mostly cloudy, with a low around 38. West wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Wednesday
A chance of sprinkles, mixing with flurries after 8am, then gradually ending. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 31 by 5pm. Breezy, with a north wind 15 to 20 mph, with gusts as high as 31 mph.
Wednesday Night
Clear, with a low around 19. Northwest wind 8 to 14 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 34. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
A 30 percent chance of snow, mainly 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 23 mph.
Friday
Partly sunny, with a high near 44.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 19.
M.L.King Day
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 13.
Tuesday
Mostly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Ann MO
 38.73°N 90.4°W (Elev. 597 ft)
Last Update:
9:26 pm CST Jan 13, 2026
Forecast Valid:
10pm CST Jan 13, 2026-6pm CST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation