National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms and Heavy Rainfall Today from the Central Plains into the Tennessee Valley

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into portions of the Southeast today. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys today. Read More >

Hazardous Weather Conditions

Current conditions at

FORT PECK DAM (GGWFP)

Lat: 48.0084°NLon: 106.3962°WElev: 2280.0ft.

NA

80°F

27°C

Humidity 45%
Wind Speed ESE 6 MPH
Barometer NA
Dewpoint 57°F (14°C)
Visibility NA
Heat Index80°F (27°C)
Last update 12 Jul 01:48 AM MDT
Extended Forecast for

Nashua MT

Extreme Heat Warning July 12, 02:42am until July 13, 06:00am
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 12, 02:42am until July 13, 06:00am

    NOW until 6:00am Mon

    Extreme Heat Warning

  • Overnight

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 109. North northeast wind 5 to 10 mph becoming south 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 109 °F

    Hot

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 72. South wind 11 to 17 mph becoming north in the evening. Winds could gust as high as 30 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny and hot, with a high near 97. North wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. East wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Breezy, with an east wind 15 to 22 mph, with gusts as high as 34 mph.

    High: 93 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 66. Breezy, with an east northeast wind 21 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Breezy.
    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 90. East northeast wind 13 to 20 mph, with gusts as high as 32 mph.

    High: 90 °F

    Chance
    Showers then
    Partly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 69. North northwest wind 3 to 5 mph.
Sunday
Sunny and hot, with a high near 109. North northeast wind 5 to 10 mph becoming south 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph.
Sunday Night
Increasing clouds, with a low around 72. South wind 11 to 17 mph becoming north in the evening. Winds could gust as high as 30 mph.
Monday
Mostly sunny and hot, with a high near 97. North wind 9 to 11 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 68. East wind 10 to 13 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 93. Breezy, with an east wind 15 to 22 mph, with gusts as high as 34 mph.
Tuesday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 66. Breezy, with an east northeast wind 21 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 90. East northeast wind 13 to 20 mph, with gusts as high as 32 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. East northeast wind 7 to 13 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 91. Northeast wind 5 to 8 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. East wind 10 to 13 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 64.
Saturday
Mostly sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nashua MT
 48.13°N 106.36°W (Elev. 2037 ft)
Last Update:
12:20 am MDT Jul 12, 2026
Forecast Valid:
2am MDT Jul 12, 2026-6pm MDT Jul 18, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation