Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

Georgetown Lake (MTGTL)

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

NA

39°F

4°C

Humidity 56%
Wind Speed SW 8 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Wind Chill33°F (1°C)
Last update 13 Apr 01:30 PM MDT
Extended Forecast for

21 Miles SW Georgetown MT

  • This Afternoon

    This Afternoon: A 50 percent chance of snow.  Mostly cloudy, with a high near 34. West wind around 9 mph, with gusts as high as 24 mph.  Total daytime snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Chance Snow

  • Tonight

    Tonight: A 40 percent chance of snow, mainly before 10pm.  Mostly cloudy, with a low around 24. West wind 3 to 8 mph. Winds could gust as high as 23 mph.  New snow accumulation of less than one inch possible.

    Low: 24 °F

    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 38. Light west southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 29 mph.

    High: 38 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow after midnight.  Mostly cloudy, with a low around 27. Southwest wind 8 to 10 mph, with gusts as high as 29 mph.  New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow.  High near 35. Southwest wind 8 to 13 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    High: 35 °F

    Snow Likely
    then Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times.  Low around 15. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 15 °F

    Heavy Snow
    then Snow
    Likely

  • Thursday

    Thursday: Snow before noon, then snow showers after noon. Some thunder is also possible.  High near 23. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 23 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before midnight.  Mostly cloudy, with a low around 14.

    Low: 14 °F

    Snow Likely

  • Friday

    Friday: Snow likely.  Mostly cloudy, with a high near 28.

    High: 28 °F

    Snow Likely

Detailed Forecast

This Afternoon
A 50 percent chance of snow. Mostly cloudy, with a high near 34. West wind around 9 mph, with gusts as high as 24 mph. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
A 40 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 24. West wind 3 to 8 mph. Winds could gust as high as 23 mph. New snow accumulation of less than one inch possible.
Tuesday
Mostly cloudy, with a high near 38. Light west southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 29 mph.
Tuesday Night
A 40 percent chance of snow after midnight. Mostly cloudy, with a low around 27. Southwest wind 8 to 10 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.
Wednesday
Snow. High near 35. Southwest wind 8 to 13 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 15. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Thursday
Snow before noon, then snow showers after noon. Some thunder is also possible. High near 23. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 14.
Friday
Snow likely. Mostly cloudy, with a high near 28.
Friday Night
A slight chance of snow before midnight. Partly cloudy, with a low around 14.
Saturday
Sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
A slight chance of snow. Mostly sunny, with a high near 44.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
21 Miles SW Georgetown MT
 45.96°N 113.53°W (Elev. 7598 ft)
12:22 pm MDT Apr 13, 2026
1pm MDT Apr 13, 2026-6pm MDT Apr 19, 2026
 
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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