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.

Fair

25°F

-4°C

Humidity 59%
Wind Speed Calm
Barometer 30.32 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 22 Jan 7:50 pm CST
Extended Forecast for

Dorchester IL

Winter Storm Watch January 24, 12:00am until January 25, 06:00pm
Cold Weather Advisory January 23, 03:00am until January 24, 12:00pm
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 5. North wind 5 to 10 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 26 mph.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 9. Wind chill values as low as -15. Blustery, with a north wind 14 to 20 mph.

    High: 9 °F

    Partly Sunny
    and Blustery
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 3. Wind chill values as low as -15. Northeast wind 11 to 13 mph.

    Low: 3 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow, mainly after 9am. High near 11. Wind chill values as low as -10. Northeast wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 11 °F

    Snow Likely
    then Snow

  • Saturday Night

    Saturday Night: Snow. Low around 8. Northeast wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 8 °F

    Snow

  • Sunday

    Sunday: Snow likely, mainly before noon. Cloudy and cold, with a high near 14. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.

    High: 14 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -2.

    Low: -2 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 15.

    High: 15 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 5. North wind 5 to 10 mph increasing to 13 to 18 mph after midnight. Winds could gust as high as 26 mph.
Friday
Partly sunny and cold, with a high near 9. Wind chill values as low as -15. Blustery, with a north wind 14 to 20 mph.
Friday Night
Mostly cloudy, with a low around 3. Wind chill values as low as -15. Northeast wind 11 to 13 mph.
Saturday
Snow, mainly after 9am. High near 11. Wind chill values as low as -10. Northeast wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
Snow. Low around 8. Northeast wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow likely, mainly before noon. Cloudy and cold, with a high near 14. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -2.
Monday
Sunny and cold, with a high near 15.
Monday Night
Mostly clear, with a low around 3.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
Partly sunny, with a high near 23.
Wednesday Night
Partly cloudy, with a low around 3.
Thursday
Partly sunny and cold, with a high near 17.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dorchester IL
 39.08°N 89.9°W (Elev. 659 ft)
Last Update:
4:56 pm CST Jan 22, 2026
Forecast Valid:
8pm CST Jan 22, 2026-6pm CST Jan 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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