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

38°F

3°C

Humidity 60%
Wind Speed SW 13 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill30°F (-1°C)
Last update 13 Apr 01:15 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 36. West wind around 7 mph, with gusts as high as 23 mph.  Total daytime snow accumulation of 1 to 2 inches possible.

    High: 36 °F

    Chance Snow

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 10pm.  Mostly cloudy, with a low around 26. West wind around 6 mph becoming calm  in the evening. Winds could gust as high as 22 mph.  New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 40. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 28 mph.

    High: 40 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow after midnight.  Mostly cloudy, with a low around 28. Southwest wind 6 to 8 mph, with gusts as high as 28 mph.  New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow.  High near 38. Southwest wind 6 to 10 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    High: 38 °F

    Snow Likely
    then Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times.  Low around 17. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 17 °F

    Heavy Snow
    then Snow
    Likely

  • Thursday

    Thursday: Snow before noon, then snow showers after noon. Some thunder is also possible.  High near 25. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 25 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before midnight.  Mostly cloudy, with a low around 15.

    Low: 15 °F

    Snow Likely

  • Friday

    Friday: Snow likely, mainly after noon.  Mostly cloudy, with a high near 30.

    High: 30 °F

    Snow Likely

Detailed Forecast

This Afternoon
A 50 percent chance of snow. Mostly cloudy, with a high near 36. West wind around 7 mph, with gusts as high as 23 mph. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A 30 percent chance of snow, mainly before 10pm. Mostly cloudy, with a low around 26. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 22 mph. New snow accumulation of less than a half inch possible.
Tuesday
Partly sunny, with a high near 40. Calm wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 28 mph.
Tuesday Night
A 40 percent chance of snow after midnight. Mostly cloudy, with a low around 28. Southwest wind 6 to 8 mph, with gusts as high as 28 mph. New snow accumulation of less than a half inch possible.
Wednesday
Snow. High near 38. Southwest wind 6 to 10 mph, with gusts as high as 31 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 17. 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 25. 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 15.
Friday
Snow likely, mainly after noon. Mostly cloudy, with a high near 30.
Friday Night
A slight chance of snow before midnight. Partly cloudy, with a low around 16.
Saturday
Sunny, with a high near 40.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
A slight chance of snow. Mostly sunny, with a high near 47.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles SW Georgetown MT
 45.99°N 113.57°W (Elev. 7684 ft)
12:22 pm MDT Apr 13, 2026
1pm MDT Apr 13, 2026-6pm MDT Apr 19, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database