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

Excessive Rainfall and Severe Thunderstorms Threaten the Southern U.S. Again Friday

Heavy to excessive rainfall is forecast for eastern Louisiana into central Alabama which could bring flash, urban, and riverine flooding Friday. Scattered severe thunderstorms with a few tornadoes, very large hail, and damaging winds are possible across parts of the Gulf Coast States Friday and Friday night. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

73°F

23°C

Humidity 74%
Wind Speed S 10 mph
Barometer 29.78 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 May 5:50 pm CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Tonight

    Tonight: Isolated showers and thunderstorms before 7pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 61. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 61 °F

    Isolated
    T-storms then
    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming south around 6 mph in the morning.

    High: 84 °F

    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. South wind around 6 mph.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

    Low: 68 °F

    T-storms
    Likely

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 7pm. Patchy fog after 2am. Otherwise, mostly clear, with a low around 61. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming south around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 68. South wind around 6 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91.
Tuesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 80.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
5:52 pm CDT May 17, 2024
Forecast Valid:
6pm CDT May 17, 2024-6pm CDT May 24, 2024
 
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