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 >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fog/Mist

64°F

18°C

Humidity 96%
Wind Speed SE 3 mph
Barometer 29.81 in (1009.1 mb)
Dewpoint 63°F (17°C)
Visibility 3.00 mi
Last update 18 May 1:53 am CDT
Extended Forecast for

Affton MO

  • Overnight

    Overnight: Patchy fog. Otherwise, clear, with a low around 60. Calm wind.

    Low: 60 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. South wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.

    High: 88 °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

    Mostly 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 after 1pm. Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny
    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 60%.

    Low: 68 °F

    T-storms
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, clear, with a low around 60. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 86. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 64. South wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 88. 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 after 1pm. Mostly sunny, with a high near 92.
Tuesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
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 81.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
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:
Affton MO
 38.56°N 90.32°W (Elev. 564 ft)
Last Update:
1:37 am CDT May 18, 2024
Forecast Valid:
2am CDT May 18, 2024-6pm CDT May 24, 2024
 
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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