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NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

Washington Regional Airport (KFYG)

Lat: 38.59°NLon: 90.99°WElev: 489ft.

Partly Cloudy with Haze

64°F

18°C

Humidity 88%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 61°F (16°C)
Visibility 4.00 mi
Last update 21 May 11:15 pm CDT
Extended Forecast for

Union MO

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. East wind around 6 mph becoming calm after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 69. Calm wind becoming east around 5 mph.

    High: 69 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 81. Calm wind.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%.

    Low: 58 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Memorial Day

    Memorial Day: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. East wind around 6 mph becoming calm after midnight.
Friday
A 50 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 69. Calm wind becoming east around 5 mph.
Friday Night
Mostly cloudy, with a low around 54. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 81. Calm wind.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%.
Sunday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Sunday Night
Mostly cloudy, with a low around 58.
Memorial Day
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 60.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Union MO
 38.44°N 91.01°W (Elev. 554 ft)
Last Update:
10:31 pm CDT May 21, 2026
Forecast Valid:
11pm CDT May 21, 2026-6pm CDT May 28, 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