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

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Rain

45°F

7°C

Humidity 93%
Wind Speed NE 5 mph
Barometer 29.89 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 15 Feb 1:55 am CST
Extended Forecast for

New Douglas IL

  • Overnight

    Overnight: Rain, mainly before 4am. Patchy fog before 4am. Low around 42. East wind around 8 mph. Chance of precipitation is 90%.

    Low: 42 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 55. North wind 5 to 10 mph becoming light northwest in the afternoon.

    High: 55 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 59. Light southwest wind becoming south 8 to 13 mph in the morning.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. South wind 6 to 9 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52. Breezy.

    Low: 52 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Rain, mainly before 4am. Patchy fog before 4am. Low around 42. East wind around 8 mph. Chance of precipitation is 90%.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 55. North wind 5 to 10 mph becoming light northwest in the afternoon.
Sunday Night
Mostly clear, with a low around 36. Calm wind.
Washington's Birthday
Mostly sunny, with a high near 59. Light southwest wind becoming south 8 to 13 mph in the morning.
Monday Night
Mostly cloudy, with a low around 41. South wind 6 to 9 mph.
Tuesday
Mostly cloudy, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 52. Breezy.
Wednesday
Partly sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
A 30 percent chance of rain, mainly after noon. Mostly sunny, with a high near 68.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 36.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 50.
Friday Night
A 20 percent chance of snow. Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Douglas IL
 38.98°N 89.67°W (Elev. 620 ft)
Last Update:
12:51 am CST Feb 15, 2026
Forecast Valid:
2am CST Feb 15, 2026-6pm CST Feb 21, 2026
 
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