Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Current conditions at

Washington Regional Airport (KFYG)

Lat: 38.59°NLon: 90.99°WElev: 489ft.

Light Rain

81°F

27°C

Humidity 94%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 79°F (26°C)
Visibility 9.00 mi
Heat Index89°F (32°C)
Last update 18 Sep 9:15 am CDT
Extended Forecast for

2 Miles S Hermann MO

Heat Advisory September 18, 09:38am until September 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 18, 09:38am until September 19, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • Today

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Partly cloudy, with a low around 69. Light and variable wind becoming southeast around 5 mph in the evening.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 94. West wind 3 to 7 mph.

    High: 94 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 4pm.  Partly sunny, with a high near 90. Light west wind.  Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 77. Chance of precipitation is 70%.

    High: 77 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers, mainly before 1am.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

Detailed Forecast

Today
A slight chance of showers between 2pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Sunny, with a high near 94. Heat index values as high as 107. Light south wind. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Light and variable wind becoming southeast around 5 mph in the evening.
Saturday
Increasing clouds, with a high near 94. West wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 68. Calm wind.
Sunday
A slight chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 90. Light west wind. Chance of precipitation is 20%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
Monday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 56.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 73.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Hermann MO
 38.67°N 91.42°W (Elev. 692 ft)
8:51 am CDT Sep 18, 2026
9am CDT Sep 18, 2026-6pm CDT Sep 24, 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