National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Current conditions at

Georgetown Lake (MTGTL)

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

NA

55°F

13°C

Humidity 45%
Wind Speed WNW 13 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 17 Jun 11:45 AM MDT
Extended Forecast for

12 Miles SSW Georgetown MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 45. Breezy, with a west northwest wind around 22 mph, with gusts as high as 31 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: A 50 percent chance of snow between 10pm and midnight. Partly cloudy, with a low around 33. Breezy, with a northwest wind 18 to 23 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph. Little or no snow accumulation expected.

    Low: 33 °F

    Chance Snow
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 51. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. West northwest wind 9 to 16 mph, with gusts as high as 23 mph.

    Low: 37 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 57. South wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 45. Breezy, with a west northwest wind around 22 mph, with gusts as high as 31 mph.
Tonight
A 50 percent chance of snow between 10pm and midnight. Partly cloudy, with a low around 33. Breezy, with a northwest wind 18 to 23 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph. Little or no snow accumulation expected.
Thursday
Sunny, with a high near 51. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 37. West northwest wind 9 to 16 mph, with gusts as high as 23 mph.
Juneteenth
Mostly sunny, with a high near 57. South wind 8 to 14 mph, with gusts as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 52.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SSW Georgetown MT
 46.02°N 113.3°W (Elev. 10000 ft)
Last Update:
2:00 am MDT Jun 17, 2026
Forecast Valid:
12pm MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation