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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

St. Joseph, Rosecrans Memorial Airport (KSTJ)

Lat: 39.77°NLon: 94.91°WElev: 823ft.

Fair

78°F

26°C

Humidity 31%
Wind Speed N 12 mph
Barometer 30.28 in (1024.8 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 4 Oct 1:53 pm CDT
Extended Forecast for

Union Star MO

  • This Afternoon

    This Afternoon: Sunny, with a high near 73. North wind around 8 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 47. Light north northeast wind.

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 51. South southeast wind 3 to 6 mph.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 73. North wind around 8 mph.
Tonight
Clear, with a low around 47. Light north northeast wind.
Monday
Sunny, with a high near 72. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Monday Night
Clear, with a low around 51. South southeast wind 3 to 6 mph.
Tuesday
Sunny, with a high near 78. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Clear, with a low around 58.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 76.
Friday Night
Clear, with a low around 58.
Saturday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union Star MO
 39.99°N 94.6°W (Elev. 958 ft)
Last Update:
1:26 pm CDT Oct 4, 2026
Forecast Valid:
2pm CDT Oct 4, 2026-6pm CDT Oct 10, 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