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

Isolated Severe Thunderstorms and Flooding Potential in the Central U.S.

Isolated strong to severe thunderstorms are possible across parts of the southern and central Plains through Saturday. Large hail and severe wind gusts are the main threats. Heavy rainfall is forecast from the western Gulf Coast into the Midwest from this weekend into early next week. New and renewed river rises are possible across portions of eastern Texas. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

47°F

8°C

Humidity 64%
Wind Speed Calm
Barometer 30.34 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 13 May 10:15 pm CDT
Extended Forecast for

West Alton MO

  • Tonight

    Tonight: Clear, with a low around 45. Southeast wind 3 to 5 mph.

    Clear

    Low: 45 °F

  • Friday

    Friday: Mostly sunny, with a high near 69. Southeast wind 5 to 10 mph.

    Mostly Sunny

    High: 69 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 53. Southeast wind 7 to 9 mph.

    Mostly Cloudy
    then Slight
    Chance
    Showers

    Low: 53 °F

  • Saturday

    Saturday: A 40 percent chance of showers. Mostly cloudy, with a high near 71. South wind 8 to 10 mph.

    Chance
    Showers

    High: 71 °F

  • Saturday
    Night

    Saturday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Southeast wind 6 to 8 mph. Chance of precipitation is 60%.

    Showers
    Likely

    Low: 56 °F

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

    Showers
    Likely

    High: 72 °F

  • Sunday
    Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Showers
    Likely

    Low: 60 °F

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.

    Showers
    Likely

    High: 74 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 59.

    Chance
    Showers

    Low: 59 °F

Detailed Forecast

Tonight
Clear, with a low around 45. Southeast wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 69. Southeast wind 5 to 10 mph.
Friday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 53. Southeast wind 7 to 9 mph.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 71. South wind 8 to 10 mph.
Saturday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 56. Southeast wind 6 to 8 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Monday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Monday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 59.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 61.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 427 ft)
Last Update:
8:25 pm CDT May 13, 2021
Forecast Valid:
10pm CDT May 13, 2021-6pm CDT May 20, 2021
 
Forecast Discussion
 
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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