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

77°F

25°C

Humidity 57%
Wind Speed NW 7 mph
Barometer 30.03 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 20 Jun 9:50 am CDT
Extended Forecast for

2 Miles WSW Pierron IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch

  • Today

    Today: Increasing clouds, with a high near 84. Northwest wind 3 to 6 mph.

    High: 84 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. Calm wind becoming east around 5 mph after midnight.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms. High near 82. Southeast wind 7 to 12 mph becoming south 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    High: 82 °F

    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms, mainly before 1am. Low around 65. Southwest wind 9 to 15 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    Low: 65 °F

    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. North wind around 10 mph.

    High: 77 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 84. Northwest wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 67. Calm wind becoming east around 5 mph after midnight.
Sunday
Showers and thunderstorms. High near 82. Southeast wind 7 to 12 mph becoming south 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Sunday Night
Showers and thunderstorms, mainly before 1am. Low around 65. Southwest wind 9 to 15 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Monday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. North wind around 10 mph.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Mostly sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Pierron IL
 38.78°N 89.6°W (Elev. 525 ft)
Last Update:
9:41 am CDT Jun 20, 2026
Forecast Valid:
10am CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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