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 49%
Wind Speed W 10 mph
Barometer 29.96 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 13 May 1:35 am CDT
Extended Forecast for

2 Miles WNW Saint Jacob IL

  • Overnight

    Overnight: Mostly cloudy early, then gradual clearing, with a low around 57. West wind around 8 mph becoming northwest.

    Low: 57 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Sunny, with a high near 73. Northwest wind 7 to 17 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 47. Northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 47 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 73. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 56. Southeast wind 7 to 10 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy early, then gradual clearing, with a low around 57. West wind around 8 mph becoming northwest.
Wednesday
Sunny, with a high near 73. Northwest wind 7 to 17 mph.
Wednesday Night
Clear, with a low around 47. Northwest wind 5 to 9 mph becoming calm in the evening.
Thursday
Sunny, with a high near 73. Calm wind becoming southeast around 6 mph in the afternoon.
Thursday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 56. Southeast wind 7 to 10 mph. Chance of precipitation is 40%.
Friday
Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 89. Breezy.
Sunday Night
Partly cloudy, with a low around 70.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Chance of precipitation is 70%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Saint Jacob IL
 38.74°N 89.8°W (Elev. 479 ft)
Last Update:
1:25 am CDT May 13, 2026
Forecast Valid:
1am CDT May 13, 2026-6pm CDT May 19, 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