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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

83°F

28°C

Humidity 44%
Wind Speed Vrbl 5 mph
Barometer 30.14 in (1020.1 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 28 Aug 12:54 pm CDT
Extended Forecast for

Hillsboro MO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. Light northeast wind.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 89. Light southeast wind.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming clear, with a low around 66. Light south wind.

    Low: 66 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 94. South wind 3 to 6 mph.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. Light northeast wind.
Tonight
Mostly clear, with a low around 62. Calm wind.
Saturday
Mostly sunny, with a high near 89. Light southeast wind.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 66. Light south wind.
Sunday
Sunny, with a high near 94. South wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 72.
Monday
Sunny and hot, with a high near 97.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Sunny and hot, with a high near 97.
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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:
1:25 pm CDT Aug 28, 2026
Forecast Valid:
2pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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Chance of Precipitation