Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Current conditions at

Jefferson River Valley (JVWM)

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

NA

87°F

31°C

Humidity 23%
Wind Speed NE 4 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Heat Index84°F (29°C)
Last update 02 Sep 05:00 PM MDT
Extended Forecast for

Waterloo MT

  • Tonight

    Tonight: Widespread haze before 4am, then widespread haze after 5am. Mostly clear, with a low around 52. North northeast wind 5 to 7 mph becoming calm  after midnight.

    Low: 52 °F

    Mostly Clear
    then Haze

  • Wednesday

    Wednesday: Widespread haze before 2pm, then widespread haze after 3pm. Sunny, with a high near 89. Calm wind becoming north northwest 5 to 8 mph in the morning.

    High: 89 °F

    Haze

  • Wednesday Night

    Wednesday Night: Widespread haze after 11pm. Mostly clear, with a low around 53. North wind 6 to 8 mph becoming southwest after midnight.

    Low: 53 °F

    Haze

  • Thursday

    Thursday: Widespread haze before 7am. Sunny, with a high near 80. Southwest wind 8 to 16 mph becoming northeast in the afternoon. Winds could gust as high as 23 mph.

    High: 80 °F

    Haze then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. North northeast wind 8 to 16 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. East northeast wind 5 to 7 mph.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47. Northeast wind 3 to 7 mph.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming east around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Tonight
Widespread haze before 4am, then widespread haze after 5am. Mostly clear, with a low around 52. North northeast wind 5 to 7 mph becoming calm after midnight.
Wednesday
Widespread haze before 2pm, then widespread haze after 3pm. Sunny, with a high near 89. Calm wind becoming north northwest 5 to 8 mph in the morning.
Wednesday Night
Widespread haze after 11pm. Mostly clear, with a low around 53. North wind 6 to 8 mph becoming southwest after midnight.
Thursday
Widespread haze before 7am. Sunny, with a high near 80. Southwest wind 8 to 16 mph becoming northeast in the afternoon. Winds could gust as high as 23 mph.
Thursday Night
Mostly clear, with a low around 44. North northeast wind 8 to 16 mph, with gusts as high as 25 mph.
Friday
Sunny, with a high near 79. East northeast wind 5 to 7 mph.
Friday Night
Mostly clear, with a low around 47. Northeast wind 3 to 7 mph.
Saturday
Sunny, with a high near 82. Calm wind becoming east around 6 mph in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Monday
A chance of showers. Mostly sunny, with a high near 75.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 46.
Tuesday
A chance of showers. Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo MT
 45.71°N 112.19°W (Elev. 4528 ft)
4:11 pm MDT Sep 2, 2025
5pm MDT Sep 2, 2025-6pm MDT Sep 9, 2025
 
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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