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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Mostly Cloudy

64°F

18°C

Humidity 100%
Wind Speed N 6 mph
Barometer 29.69 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 14 May 8:50 pm CDT
Extended Forecast for

Alton ILSimilar City Names

  • Tonight

    Tonight: A chance of rain and thunderstorms before midnight, then isolated showers and thunderstorms between midnight and 2am. Patchy fog after 2am. Otherwise, cloudy, with a low around 58. North wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    T-storms then
    Isolated
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: Cloudy, with a high near 74. North wind 8 to 10 mph.

    High: 74 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 59. North wind around 6 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. South wind 6 to 10 mph. Chance of precipitation is 70%.

    High: 74 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. South wind 5 to 7 mph. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain and thunderstorms before midnight, then isolated showers and thunderstorms between midnight and 2am. Patchy fog after 2am. Otherwise, cloudy, with a low around 58. North wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Wednesday
Cloudy, with a high near 74. North wind 8 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 59. North wind around 6 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. South wind 6 to 10 mph. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. South wind 5 to 7 mph. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 63.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 84.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Alton ILSimilar City Names
 38.91°N 90.16°W (Elev. 505 ft)
Last Update:
9:22 pm CDT May 14, 2024
Forecast Valid:
9pm CDT May 14, 2024-6pm CDT May 21, 2024
 
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