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

71°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 14 Jun 10:15 pm CDT
Extended Forecast for

Marine IL

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 66. North wind around 6 mph.

    Low: 66 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. North wind 3 to 6 mph.

    High: 84 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 68. East wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 83 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers. Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

    High: 88 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 66. North wind around 6 mph.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. North wind 3 to 6 mph.
Sunday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 68. East wind 3 to 5 mph. Chance of precipitation is 30%.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers. Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 70.
Juneteenth
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 92.
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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:
9:52 pm CDT Jun 14, 2025
Forecast Valid:
10pm CDT Jun 14, 2025-6pm CDT Jun 21, 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