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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

FORT PECK DAM (GGWFP)

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

NA

52°F

11°C

Humidity 63%
Wind Speed NW 19 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 10 Oct 04:50 PM MDT
Extended Forecast for

Nashua MT

  • Tonight

    Tonight: Rain. Patchy fog between 11pm and 1am. Low around 34. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    Low: 34 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: Rain. High near 47. Northeast wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.

    High: 47 °F

    Rain

  • Sunday Night

    Sunday Night: Rain, possibly mixed with snow, mainly before 4am. Low around 31. East northeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 31 °F

    Rain then
    Rain/Snow

  • Columbus Day

    Columbus Day: Rain before 9am, then rain, possibly mixed with snow between 9am and noon, then rain likely after noon. High near 44. North wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    then Rain
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 30. North wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 53. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 35. South southeast wind around 6 mph becoming west after midnight.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain. Patchy fog between 11pm and 1am. Low around 34. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Sunday
Rain. High near 47. Northeast wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%.
Sunday Night
Rain, possibly mixed with snow, mainly before 4am. Low around 31. East northeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Columbus Day
Rain before 9am, then rain, possibly mixed with snow between 9am and noon, then rain likely after noon. High near 44. North wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 30. North wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 53. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 31. Calm wind.
Wednesday
Mostly sunny, with a high near 59. Calm wind becoming south southeast around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 35. South southeast wind around 6 mph becoming west after midnight.
Thursday
Mostly sunny, with a high near 59. Northwest wind 8 to 17 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 32. Northwest wind 6 to 13 mph, with gusts as high as 26 mph.
Friday
Mostly sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 34.
Saturday
Sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nashua MT
 48.13°N 106.36°W (Elev. 2037 ft)
Last Update:
3:51 pm MDT Oct 10, 2026
Forecast Valid:
6pm MDT Oct 10, 2026-6pm MDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation