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

70°F

21°C

Humidity 96%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 69°F (21°C)
Visibility 7.00 mi
Last update 26 Jun 1:55 am CDT
Extended Forecast for

3 Miles ENE Mount Olive IL

Flood Watch June 26, 02:12am until June 26, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 26, 02:12am until June 26, 07:00pm

    NOW until 7:00pm Fri

    Flood Watch

  • Overnight

    Low: 67 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm, mainly before 2pm, then showers and thunderstorms likely after 2pm. High near 76. Southeast wind 7 to 9 mph becoming south in the afternoon. Chance of precipitation is 90%.

    High: 76 °F

    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 64. North wind 3 to 7 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Saturday

    Saturday: Partly sunny, with a high near 81. Calm wind.

    High: 81 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68. Calm wind becoming southeast around 6 mph in the evening.

    Low: 68 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 67. Calm wind becoming southeast around 5 mph. Chance of precipitation is 100%.
Friday
Showers and possibly a thunderstorm, mainly before 2pm, then showers and thunderstorms likely after 2pm. High near 76. Southeast wind 7 to 9 mph becoming south in the afternoon. Chance of precipitation is 90%.
Friday Night
Showers and thunderstorms likely, mainly before 10pm. Mostly cloudy, with a low around 64. North wind 3 to 7 mph. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 81. Calm wind.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 68. Calm wind becoming southeast around 6 mph in the evening.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 73.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Clear, with a low around 74.
Wednesday
Sunny, with a high near 95.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Mount Olive IL
 39.09°N 89.67°W (Elev. 666 ft)
Last Update:
1:26 am CDT Jun 26, 2026
Forecast Valid:
2am CDT Jun 26, 2026-6pm CDT Jul 2, 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