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

Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Hazardous Weather Conditions

Current conditions at

St. Joseph, Rosecrans Memorial Airport (KSTJ)

Lat: 39.77°NLon: 94.91°WElev: 823ft.

Partly Cloudy

80°F

27°C

Humidity 87%
Wind Speed S 8 mph
Barometer 29.96 in (1013.7 mb)
Dewpoint 76°F (24°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 25 Jul 8:53 am CDT
Extended Forecast for

3 Miles SSE Union Star MO

Heat Advisory July 25, 01:00pm until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 92. Heat index values as high as 105. South southwest wind around 6 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 95. Heat index values as high as 109. South wind 5 to 13 mph.

    High: 95 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 77. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 96. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 92. Heat index values as high as 105. South southwest wind around 6 mph.
Tonight
Partly cloudy, with a low around 74. Calm wind becoming south southwest around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 95. Heat index values as high as 109. South wind 5 to 13 mph.
Sunday Night
Partly cloudy, with a low around 77. South southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 96. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Union Star MO
 39.94°N 94.57°W (Elev. 981 ft)
Last Update:
9:08 am CDT Jul 25, 2026
Forecast Valid:
9am CDT Jul 25, 2026-6pm CDT Jul 31, 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