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

Hazardous Weather Conditions

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Overcast

52°F

11°C

Humidity 93%
Wind Speed E 6 mph
Barometer 30.04 in (1017.5 mb)
Dewpoint 50°F (10°C)
Visibility 7.00 mi
Wind Chill50°F (10°C)
Last update 20 Nov 11:51 am CST
Extended Forecast for

2 Miles SSW West Alton MO

  • This Afternoon

    This Afternoon: Cloudy, with a high near 55. Southeast wind 5 to 7 mph.

    High: 55 °F

    Cloudy

  • Tonight

    Tonight: Rain and thunderstorms likely before 2am, then rain and possibly a thunderstorm between 2am and 3am, then rain after 3am. Patchy fog after midnight. Low around 52. Southeast wind 3 to 5 mph. Chance of precipitation is 100%.

    Low: 52 °F

    Chance Rain
    then Rain and
    Patchy Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. Patchy fog before 10am. High near 57. East wind 6 to 9 mph. Chance of precipitation is 100%.

    High: 57 °F

    Rain and
    Patchy Fog
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain, mainly before midnight. Low around 44. North wind 6 to 9 mph. Chance of precipitation is 90%.

    Low: 44 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 58. Northeast wind around 6 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: A 50 percent chance of rain. Mostly cloudy, with a high near 58.

    High: 58 °F

    Chance Rain

Detailed Forecast

This Afternoon
Cloudy, with a high near 55. Southeast wind 5 to 7 mph.
Tonight
Rain and thunderstorms likely before 2am, then rain and possibly a thunderstorm between 2am and 3am, then rain after 3am. Patchy fog after midnight. Low around 52. Southeast wind 3 to 5 mph. Chance of precipitation is 100%.
Friday
Rain and possibly a thunderstorm. Patchy fog before 10am. High near 57. East wind 6 to 9 mph. Chance of precipitation is 100%.
Friday Night
Rain, mainly before midnight. Low around 44. North wind 6 to 9 mph. Chance of precipitation is 90%.
Saturday
Mostly sunny, with a high near 58. Northeast wind around 6 mph.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 44.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 58.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW West Alton MO
 38.84°N 90.25°W (Elev. 499 ft)
Last Update:
10:56 am CST Nov 20, 2025
Forecast Valid:
12pm CST Nov 20, 2025-6pm CST Nov 26, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation