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.

Light Drizzle

54°F

12°C

Humidity 100%
Wind Speed NE 7 mph
Barometer 29.91 in
Dewpoint 54°F (12°C)
Visibility 3.00 mi
Wind Chill52°F (11°C)
Last update 21 Nov 11:50 am CST
Extended Forecast for

2 Miles WSW Alton IL

  • This Afternoon

    This Afternoon: Rain likely, mainly between 1pm and 3pm. Patchy fog before 1pm. Otherwise, cloudy, with a high near 56. Northeast wind 5 to 7 mph. Chance of precipitation is 60%.

    High: 56 °F

    Rain Likely
    and Patchy
    Fog

  • Tonight

    Tonight: A 40 percent chance of rain before 3am. Cloudy, with a low around 42. North wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Chance Rain

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 58. North wind 5 to 7 mph becoming west in the afternoon.

    High: 58 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. West wind 5 to 7 mph becoming calm after midnight.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 63. Calm wind becoming west around 5 mph.

    High: 63 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: Rain likely, mainly after noon. Cloudy, with a high near 59. Chance of precipitation is 70%.

    High: 59 °F

    Chance Rain
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain, mainly before midnight. Low around 50. Chance of precipitation is 80%.

    Low: 50 °F

    Rain then
    Chance Rain

  • Tuesday

    Tuesday: A 20 percent chance of rain. Partly sunny, with a high near 62.

    High: 62 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
Rain likely, mainly between 1pm and 3pm. Patchy fog before 1pm. Otherwise, cloudy, with a high near 56. Northeast wind 5 to 7 mph. Chance of precipitation is 60%.
Tonight
A 40 percent chance of rain before 3am. Cloudy, with a low around 42. North wind 6 to 9 mph, with gusts as high as 20 mph.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 58. North wind 5 to 7 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 39. West wind 5 to 7 mph becoming calm after midnight.
Sunday
Sunny, with a high near 63. Calm wind becoming west around 5 mph.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Rain likely, mainly after noon. Cloudy, with a high near 59. Chance of precipitation is 70%.
Monday Night
Rain, mainly before midnight. Low around 50. Chance of precipitation is 80%.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
Mostly clear, with a low around 28.
Thanksgiving Day
Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Alton IL
 38.88°N 90.19°W (Elev. 407 ft)
Last Update:
11:11 am CST Nov 21, 2025
Forecast Valid:
12pm CST Nov 21, 2025-6pm CST Nov 27, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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