Current conditions at

St. Joseph, Rosecrans Memorial Airport (KSTJ)

Lat: 39.77°NLon: 94.91°WElev: 823ft.

Fair

73°F

23°C

Humidity 81%
Wind Speed Calm
Barometer 29.90 in (1011.9 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 20 Jun 6:53 pm CDT
Extended Forecast for

Union Star MO

Flood Watch until June 21, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until June 21, 07:00pm

    NOW until 7:00pm Sun

    Flood Watch

  • Tonight

    Low: 63 °F

    Chance
    T-storms then
    Heavy Rain

  • Sunday

    Sunday: Showers and thunderstorms before 4pm, then a slight chance of showers. Some of the storms could produce heavy rainfall.  High near 77. East wind 14 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 77 °F

    Heavy Rain
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58. North northeast wind 9 to 16 mph, with gusts as high as 22 mph.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 75. Northeast wind around 10 mph.

    High: 75 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. East northeast wind 5 to 8 mph becoming calm  in the evening.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2am. Some of the storms could produce heavy rainfall. Low around 63. Light and variable wind becoming east 9 to 14 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday
Showers and thunderstorms before 4pm, then a slight chance of showers. Some of the storms could produce heavy rainfall. High near 77. East wind 14 to 16 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Mostly cloudy, with a low around 58. North northeast wind 9 to 16 mph, with gusts as high as 22 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 75. Northeast wind around 10 mph.
Monday Night
Partly cloudy, with a low around 58. East northeast wind 5 to 8 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
A chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Union Star MO
 39.99°N 94.6°W (Elev. 958 ft)
6:37 pm CDT Jun 20, 2026
7pm CDT Jun 20, 2026-6pm CDT Jun 27, 2026
 
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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