Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

Lat: 46.71854°NLon: 113.29534°WElev: 3901.0ft.

unknown precip

51°F

11°C

Humidity 52%
Wind Speed W 5 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 15 Apr 02:00 PM MDT
Extended Forecast for

Greenough MT

Winter Weather Advisory April 15, 06:00pm until April 16, 09:00am
Click here for hazard details and duration
Winter Weather Advisory
  • This Afternoon

    This Afternoon: Rain likely, then showers and possibly a thunderstorm after 3pm.  Snow level 5100 feet lowering to 4300 feet. High near 51. West southwest wind around 7 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 51 °F

    Showers

  • Tonight

    Tonight: Rain, possibly mixed with snow before 8pm, then a chance of snow between 8pm and 9pm.  Low around 22. West wind 5 to 7 mph becoming calm  after midnight.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 22 °F

    Rain/Snow
    then Partly
    Cloudy

  • Thursday

    Thursday: A chance of snow before noon, then snow showers likely between noon and 3pm, then snow likely after 3pm. Some thunder is also possible.  Partly sunny, with a high near 40. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow
    then Snow
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of snow, mainly before midnight.  Mostly cloudy, with a low around 23. Northwest wind 5 to 7 mph becoming calm  in the evening. Winds could gust as high as 20 mph.  New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly after noon.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 45. Calm wind becoming west northwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 45 °F

    Snow Likely
    and Patchy
    Fog

  • Friday Night

    Friday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 20.

    Low: 20 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 8am.  Otherwise, sunny, with a high near 56.

    High: 56 °F

    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain likely, then showers and possibly a thunderstorm after 3pm. Snow level 5100 feet lowering to 4300 feet. High near 51. West southwest wind around 7 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain, possibly mixed with snow before 8pm, then a chance of snow between 8pm and 9pm. Low around 22. West wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday
A chance of snow before noon, then snow showers likely between noon and 3pm, then snow likely after 3pm. Some thunder is also possible. Partly sunny, with a high near 40. Calm wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 23. Northwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph. New snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly after noon. Patchy fog before 8am. Otherwise, partly sunny, with a high near 45. Calm wind becoming west northwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 20.
Saturday
Areas of fog before 8am. Otherwise, sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Greenough MT
 46.92°N 113.45°W (Elev. 3783 ft)
2:01 pm MDT Apr 15, 2026
2pm MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
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Additional Resources

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