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.

Overcast

48°F

9°C

Humidity 68%
Wind Speed E 8 mph
Barometer 29.93 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 18 Nov 12:15 am CST
Extended Forecast for

Marine IL

  • Overnight

    Overnight: A chance of rain and thunderstorms before 4am, then a slight chance of rain and thunderstorms after 5am. Cloudy, with a low around 49. Southeast wind 8 to 10 mph. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of rain and thunderstorms before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 68. Southeast wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 68 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. North wind around 6 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 61. Light and variable wind.

    High: 61 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 46. Light and variable wind.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain likely, then rain and possibly a thunderstorm after noon. High near 65. Chance of precipitation is 80%.

    High: 65 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Cloudy, with a low around 52. Chance of precipitation is 70%.

    Low: 52 °F

    Rain Likely

  • Friday

    Friday: Rain likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

Detailed Forecast

Overnight
A chance of rain and thunderstorms before 4am, then a slight chance of rain and thunderstorms after 5am. Cloudy, with a low around 49. Southeast wind 8 to 10 mph. Chance of precipitation is 40%.
Tuesday
A 20 percent chance of rain and thunderstorms before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 68. Southeast wind 5 to 10 mph becoming light and variable in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 45. North wind around 6 mph becoming calm in the evening.
Wednesday
Mostly cloudy, with a high near 61. Light and variable wind.
Wednesday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 46. Light and variable wind.
Thursday
Rain likely, then rain and possibly a thunderstorm after noon. High near 65. Chance of precipitation is 80%.
Thursday Night
Rain likely and possibly a thunderstorm. Cloudy, with a low around 52. Chance of precipitation is 70%.
Friday
Rain likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 40.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marine IL
 38.78°N 89.77°W (Elev. 512 ft)
Last Update:
10:41 pm CST Nov 17, 2025
Forecast Valid:
12am CST Nov 18, 2025-6pm CST Nov 24, 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