Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Severe thunderstorms are expected across parts of the central and southern High Plains, central Great Lakes, and Ozarks Wednesday. Read More >

Current conditions at

St. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

70°F

21°C

Humidity 87%
Wind Speed E 5 mph
Barometer 29.97 in (1014.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 26 Aug 5:54 am CDT
Extended Forecast for

Old Monroe MO

  • Today

    Today: Mostly sunny, with a high near 90. Calm wind becoming west around 6 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Calm wind becoming north around 6 mph in the afternoon.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Light north wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind.

    High: 85 °F

    Sunny

  • Friday Night

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

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 90. Calm wind becoming west around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 65. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 86. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 61. Light north wind.
Friday
Sunny, with a high near 85. Calm wind.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 72.
Monday
Mostly sunny, with a high near 93.
Monday Night
Partly cloudy, with a low around 74.
Tuesday
Mostly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Old Monroe MO
 38.92°N 90.76°W (Elev. 436 ft)
5:21 am CDT Aug 26, 2026
6am CDT Aug 26, 2026-6pm CDT Sep 1, 2026
 
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