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.

Fog/Mist

47°F

8°C

Humidity 94%
Wind Speed SE 6 mph
Barometer 30.11 in
Dewpoint 46°F (8°C)
Visibility 3.00 mi
Wind Chill44°F (7°C)
Last update 20 Nov 5:35 am CST
Extended Forecast for

Mount Olive IL

  • Overnight

    Overnight: A 20 percent chance of rain. Cloudy, with a low around 44. Light southeast wind.

    Low: 44 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A slight chance of rain before 11am, then a slight chance of rain after 4pm. Areas of fog between 7am and 9am. Otherwise, cloudy, with a high near 55. Southeast wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 55 °F

    Slight Chance
    Rain and
    Areas Fog

  • Thursday Night

    Thursday Night: Rain likely, mainly after 3am. Patchy fog after 8pm. Otherwise, cloudy, with a low around 50. Southeast wind 3 to 5 mph. Chance of precipitation is 70%.

    Low: 50 °F

    Chance Rain
    and Patchy
    Fog then Rain
    Likely and
    Patchy Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. Patchy fog before 11am. High near 60. Northeast wind 5 to 10 mph. Chance of precipitation is 90%.

    High: 60 °F

    Rain and
    Patchy Fog

  • Friday Night

    Friday Night: A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 41. Northeast wind 6 to 8 mph.

    Low: 41 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Overnight
A 20 percent chance of rain. Cloudy, with a low around 44. Light southeast wind.
Thursday
A slight chance of rain before 11am, then a slight chance of rain after 4pm. Areas of fog between 7am and 9am. Otherwise, cloudy, with a high near 55. Southeast wind 5 to 7 mph. Chance of precipitation is 20%.
Thursday Night
Rain likely, mainly after 3am. Patchy fog after 8pm. Otherwise, cloudy, with a low around 50. Southeast wind 3 to 5 mph. Chance of precipitation is 70%.
Friday
Rain and possibly a thunderstorm. Patchy fog before 11am. High near 60. Northeast wind 5 to 10 mph. Chance of precipitation is 90%.
Friday Night
A 50 percent chance of rain before midnight. Mostly cloudy, with a low around 41. Northeast wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 40.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 57.
Monday Night
Rain likely. Cloudy, with a low around 45. Chance of precipitation is 70%.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Olive IL
 39.07°N 89.73°W (Elev. 669 ft)
Last Update:
4:51 am CST Nov 20, 2025
Forecast Valid:
5am CST Nov 20, 2025-6pm CST Nov 26, 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