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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 >

Hazardous Weather Conditions

Current conditions at

Georgetown Lake (MTGTL)

Lat: 46.191°NLon: 113.3°WElev: 6338.0ft.

NA

35°F

2°C

Humidity 72%
Wind Speed WSW 10 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 15 Apr 05:15 AM MDT
Extended Forecast for

21 Miles SW Georgetown MT

Winter Weather Advisory April 15, 03:00pm until April 16, 09:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Snow showers likely. The snow could be heavy at times. Cloudy, with a low around 27. Southwest wind around 8 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of around an inch possible.

    Low: 27 °F

    Heavy Snow

  • Wednesday

    Wednesday: Snow showers. The snow could be heavy at times. Some thunder is also possible. High near 35. Southwest wind 8 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 35 °F

    Heavy Snow

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before 9pm. The snow could be heavy at times. Low around 13. West wind 5 to 13 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 13 °F

    Heavy Snow
    then Chance
    Snow Showers

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 22. West northwest wind 6 to 11 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 22 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 14. Northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 14 °F

    Snow Showers
    Likely

  • Friday

    Friday: Snow showers likely, mainly after noon. Mostly cloudy, with a high near 27. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 27 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 13.

    Low: 13 °F

    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow showers likely. The snow could be heavy at times. Cloudy, with a low around 27. Southwest wind around 8 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of around an inch possible.
Wednesday
Snow showers. The snow could be heavy at times. Some thunder is also possible. High near 35. Southwest wind 8 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Wednesday Night
Snow showers, mainly before 9pm. The snow could be heavy at times. Low around 13. West wind 5 to 13 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Thursday
Snow showers. Some thunder is also possible. High near 22. West northwest wind 6 to 11 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 14. Northwest wind 5 to 10 mph becoming light west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely, mainly after noon. Mostly cloudy, with a high near 27. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 13.
Saturday
Sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
A slight chance of snow. Mostly sunny, with a high near 50.
Monday Night
A chance of snow. Partly cloudy, with a low around 31.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles SW Georgetown MT
 45.96°N 113.53°W (Elev. 7598 ft)
Last Update:
2:01 am MDT Apr 15, 2026
Forecast Valid:
5am MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation