National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

67°F

19°C

Humidity 84%
Wind Speed SW 3 mph
Barometer 30.08 in (1018.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 23 Aug 7:54 am CDT
Extended Forecast for

Hillsboro MO

  • Today

    Today: Mostly sunny, with a high near 82. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then becoming mostly clear toward daybreak, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.

    High: 81 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. East wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. Light east wind.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 82. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, then becoming mostly clear toward daybreak, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.
Monday
Increasing clouds, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 63. East wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 84. Light east wind.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 85.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro MO
 38.23°N 90.56°W (Elev. 801 ft)
Last Update:
5:05 am CDT Aug 23, 2026
Forecast Valid:
8am CDT Aug 23, 2026-6pm CDT Aug 29, 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