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

75°F

24°C

Humidity 78%
Wind Speed Vrbl 6 mph
Barometer 30.07 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 15 Jun 10:03 am CDT
Extended Forecast for

2 Miles SW Alton IL

  • Today

    Today: Partly sunny, with a high near 84. Northeast wind around 6 mph.

    High: 84 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. East wind 3 to 6 mph.

    Low: 70 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly cloudy, with a high near 85. East wind 3 to 6 mph.

    High: 85 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South wind 3 to 8 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 87. Chance of precipitation is 70%.

    High: 87 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 84. Northeast wind around 6 mph.
Tonight
Mostly cloudy, with a low around 70. East wind 3 to 6 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly cloudy, with a high near 85. East wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 70. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. South wind 3 to 8 mph.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 87. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69.
Juneteenth
Mostly sunny, with a high near 86.
Thursday Night
Mostly clear, with a low around 68.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Alton IL
 38.88°N 90.16°W (Elev. 466 ft)
Last Update:
8:37 am CDT Jun 15, 2025
Forecast Valid:
10am CDT Jun 15, 2025-6pm CDT Jun 21, 2025
 
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