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

Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

LIBBY (LBBM8)

Lat: 48.40361°NLon: 115.53917°WElev: 2070.0ft.

NA

41°F

5°C

Humidity 94%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 13 Apr 04:25 AM MDT
Extended Forecast for

17 Miles SW Fortine MT

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Slight Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 49. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 49 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers before 10pm. Snow level 6800 feet lowering to 4800 feet after midnight . Mostly cloudy, with a low around 34. Southwest wind around 10 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of snow showers, mainly after noon. Mostly cloudy, with a high near 40. Southwest wind 9 to 14 mph, with gusts as high as 28 mph. Little or no snow accumulation expected.

    High: 40 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: Snow showers. Low around 34. South southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 34 °F

    Snow Showers

  • Wednesday

    Wednesday: Snow showers. High near 38. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 38 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers likely. Mostly cloudy, with a low around 26. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 26 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: Snow showers likely. Mostly cloudy, with a high near 36.

    High: 36 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of snow before midnight. Partly cloudy, with a low around 23.

    Low: 23 °F

    Slight Chance
    Snow then
    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 39. Calm wind.
Monday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 49. Light and variable wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 40 percent chance of showers before 10pm. Snow level 6800 feet lowering to 4800 feet after midnight . Mostly cloudy, with a low around 34. Southwest wind around 10 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A 40 percent chance of snow showers, mainly after noon. Mostly cloudy, with a high near 40. Southwest wind 9 to 14 mph, with gusts as high as 28 mph. Little or no snow accumulation expected.
Tuesday Night
Snow showers. Low around 34. South southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Wednesday
Snow showers. High near 38. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow showers likely. Mostly cloudy, with a low around 26. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow showers likely. Mostly cloudy, with a high near 36.
Thursday Night
A slight chance of snow before midnight. Partly cloudy, with a low around 23.
Friday
A slight chance of snow after noon. Mostly sunny, with a high near 41.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
A chance of rain and snow. Snow level rising to 5700 feet in the afternoon. Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SW Fortine MT
 48.56°N 115.11°W (Elev. 4800 ft)
Last Update:
2:01 am MDT Apr 13, 2026
Forecast Valid:
5am MDT Apr 13, 2026-6pm MDT Apr 19, 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