Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Current conditions at

Jefferson River Valley (JVWM)

Lat: 45.79778°NLon: 112.16528°WElev: 4415.0ft.

NA

88°F

31°C

Humidity 18%
Wind Speed S NA MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index84°F (29°C)
Last update 11 Aug 05:45 PM MDT
Extended Forecast for

Waterloo MT

Red Flag Warning until August 11, 09:00pm
Click here for hazard details and duration
...
  •  
    Red Flag Warning until August 11, 09:00pm

    NOW until 9:00pm Tue

    Red Flag Warning

  • Tonight

    Low: 53 °F

    Smoke

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 5pm.  Areas of smoke. Increasing clouds, with a high near 86. Light and variable wind becoming northeast 5 to 10 mph in the morning.

    High: 86 °F

    Areas Smoke
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before 8pm.  Patchy smoke. Mostly cloudy, with a low around 49. North wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Chance
    Showers then
    Patchy Smoke

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon.  Mostly cloudy, with a high near 75. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 75 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before midnight, then showers likely.  Low around 49. Southeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 90%.

    Low: 49 °F

    Showers then
    Showers
    Likely

  • Friday

    Friday: A chance of showers, then showers and possibly a thunderstorm after noon.  High near 73. Calm wind becoming south southwest around 5 mph.  Chance of precipitation is 80%.

    High: 73 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers.  Mostly cloudy, with a low around 46. Light and variable wind.  Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms after noon.  Partly sunny, with a high near 76. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 76 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Tonight
Widespread smoke, mainly before 9pm. Partly cloudy, with a low around 53. North northwest wind 5 to 10 mph becoming light and variable after midnight.
Wednesday
A 30 percent chance of showers and thunderstorms after 5pm. Areas of smoke. Increasing clouds, with a high near 86. Light and variable wind becoming northeast 5 to 10 mph in the morning.
Wednesday Night
A 50 percent chance of showers and thunderstorms before 8pm. Patchy smoke. Mostly cloudy, with a low around 49. North wind 5 to 11 mph, with gusts as high as 20 mph.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 75. Light and variable wind becoming south around 6 mph in the afternoon.
Thursday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 49. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%.
Friday
A chance of showers, then showers and possibly a thunderstorm after noon. High near 73. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 46. Light and variable wind. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 76. Calm wind becoming south southwest around 6 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo MT
 45.71°N 112.19°W (Elev. 4528 ft)
4:12 pm MDT Aug 11, 2026
7pm MDT Aug 11, 2026-6pm MDT Aug 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database