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

Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

NA

57°F

14°C

Humidity 40%
Wind Speed W 11 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 31 Aug 09:45 AM MDT
Extended Forecast for

7 Miles WNW Grass Range MT

  • Today

    Today: Sunny, with a high near 78. West wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 49. Northwest wind around 6 mph becoming light and variable in the evening.

    Low: 49 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 81. Light south wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.

    High: 81 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. Southeast wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 86. South wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 86 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. West southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Southwest wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. West wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 78. West wind 6 to 13 mph, with gusts as high as 21 mph.
Tonight
Increasing clouds, with a low around 49. Northwest wind around 6 mph becoming light and variable in the evening.
Tuesday
Mostly cloudy, with a high near 81. Light south wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 54. Southeast wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 86. South wind 5 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 52. West southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 82. Southwest wind 6 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 51. West wind 7 to 13 mph, with gusts as high as 22 mph.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 52.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
A slight chance of showers. Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WNW Grass Range MT
 47.06°N 108.96°W (Elev. 3698 ft)
Last Update:
4:06 am MDT Aug 31, 2026
Forecast Valid:
10am MDT Aug 31, 2026-6pm MDT Sep 6, 2026
 
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