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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 69%
Wind Speed SW 11 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill27°F (-3°C)
Last update 15 Apr 02:00 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: A 50 percent chance of snow showers, mainly after 4am. The snow could be heavy at times. Mostly cloudy, with a low around 26. Southwest wind 10 to 13 mph, with gusts as high as 26 mph. Total nighttime snow accumulation of 1 to 3 inches possible.

    Low: 26 °F

    Heavy Snow

  • Wednesday

    Wednesday: Snow showers. The snow could be heavy at times. Some thunder is also possible. High near 32. Southwest wind 10 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.

    High: 32 °F

    Heavy Snow

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before 9pm. The snow could be heavy at times. Low around 11. Wind chill values as low as zero. West northwest wind 7 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 11 °F

    Heavy Snow
    then Chance
    Snow Showers

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 18. Wind chill values as low as -1. West northwest wind 8 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 18 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 12. West wind 6 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 12 °F

    Snow Showers
    Likely

  • Friday

    Friday: Snow showers, mainly after noon. High near 23. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 23 °F

    Chance Snow
    Showers then
    Snow Showers

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 12.

    Low: 12 °F

    Slight Chance
    Snow Showers
    then Mostly
    Clear

  • Saturday

    Saturday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of snow showers, mainly after 4am. The snow could be heavy at times. Mostly cloudy, with a low around 26. Southwest wind 10 to 13 mph, with gusts as high as 26 mph. Total nighttime snow accumulation of 1 to 3 inches possible.
Wednesday
Snow showers. The snow could be heavy at times. Some thunder is also possible. High near 32. Southwest wind 10 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 5 to 9 inches possible.
Wednesday Night
Snow showers, mainly before 9pm. The snow could be heavy at times. Low around 11. Wind chill values as low as zero. West northwest wind 7 to 14 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 18. Wind chill values as low as -1. West northwest wind 8 to 14 mph, with gusts as high as 31 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 12. West wind 6 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Snow showers, mainly after noon. High near 23. Chance of precipitation is 80%. 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 12.
Saturday
Sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 43.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
A slight chance of snow. Mostly sunny, with a high near 46.
Monday Night
A chance of snow. Mostly cloudy, with a low around 29.
Tuesday
A chance of snow. Partly sunny, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles SW Georgetown MT
 45.96°N 113.5°W (Elev. 8360 ft)
Last Update:
2:01 am MDT Apr 15, 2026
Forecast Valid:
2am 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