Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

St. Joseph, Rosecrans Memorial Airport (KSTJ)

Lat: 39.77°NLon: 94.91°WElev: 823ft.

Fair

85°F

29°C

Humidity 72%
Wind Speed SE 6 mph
Barometer 30.15 in (1020.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 16 Sep 6:53 pm CDT
Extended Forecast for

3 Miles SSE Union Star MO

  • Tonight

    Tonight: A slight chance of showers after 5am.  Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 68. East wind around 6 mph becoming light and variable  after midnight.  Chance of precipitation is 10%.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am.  Patchy fog before 10am.  Otherwise, partly sunny, with a high near 84. Light and variable wind becoming north northeast around 6 mph in the afternoon.  Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers and
    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 69. East wind 5 to 7 mph.

    Low: 69 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Heat index values as high as 97. South wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 86 °F

    Becoming
    Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 70. South wind 8 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 84. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 73. Chance of precipitation is 60%.

    High: 73 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of showers after 5am. Patchy fog after 3am. Otherwise, partly cloudy, with a low around 68. East wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 10%.
Thursday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 84. Light and variable wind becoming north northeast around 6 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 69. East wind 5 to 7 mph.
Friday
Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Heat index values as high as 97. South wind 7 to 11 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. South wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Monday
A chance of showers before 1pm. Mostly cloudy, with a high near 71. Chance of precipitation is 30%.
Monday Night
Mostly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Union Star MO
 39.94°N 94.57°W (Elev. 981 ft)
3:36 pm CDT Sep 16, 2026
7pm CDT Sep 16, 2026-6pm CDT Sep 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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