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.

Partly Cloudy

64°F

18°C

Humidity 92%
Wind Speed S 15 mph
Barometer 29.71 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 30 Mar 3:55 am CDT
Extended Forecast for

2 Miles WSW Alton IL

  • Today

    Today: Rain and thunderstorms, mainly before 3pm. High near 74. South wind 11 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 80%.

    High: 74 °F

    Chance
    T-storms then
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. Northwest wind 13 to 15 mph.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 54. Northwest wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 54 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. North wind 5 to 7 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Southeast wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Slight Chance
    Rain then
    Rain Likely

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 77. Breezy. Chance of precipitation is 90%.

    High: 77 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms before 1am, then a slight chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.

    Low: 51 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Rain Likely

Detailed Forecast

Today
Rain and thunderstorms, mainly before 3pm. High near 74. South wind 11 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 80%.
Tonight
Mostly cloudy, with a low around 40. Northwest wind 13 to 15 mph.
Monday
Partly sunny, with a high near 54. Northwest wind 11 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 36. North wind 5 to 7 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 60. Southeast wind 6 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Wednesday
Rain and possibly a thunderstorm. High near 77. Breezy. Chance of precipitation is 90%.
Wednesday Night
A chance of rain and thunderstorms before 1am, then a slight chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Thursday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 48.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 66.
Friday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 51. Chance of precipitation is 70%.
Saturday
Rain likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
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:
3:37 am CDT Mar 30, 2025
Forecast Valid:
4am CDT Mar 30, 2025-6pm CDT Apr 5, 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