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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Georgetown Lake (MTGTL)

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

NA

55°F

13°C

Humidity 57%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 17 Jun 10:15 PM MDT
Extended Forecast for

17 Miles SW Georgetown MT

  • Tonight

    Tonight: A chance of rain between 11pm and midnight. Mostly clear, with a low around 39. Calm wind. Chance of precipitation is 30%.

    Low: 39 °F

    Chance Rain
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 69. Calm wind becoming west northwest around 6 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. Light north wind.

    Low: 42 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. Light north wind.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. Chance of precipitation is 30%.

    High: 70 °F

    Chance Rain
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain between 11pm and midnight. Mostly clear, with a low around 39. Calm wind. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 69. Calm wind becoming west northwest around 6 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 42. Light north wind.
Juneteenth
Mostly sunny, with a high near 76. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 51. Light north wind.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 70. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Sunny, with a high near 69.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SW Georgetown MT
 46.04°N 113.52°W (Elev. 6722 ft)
Last Update:
2:01 pm MDT Jun 17, 2026
Forecast Valid:
10pm MDT Jun 17, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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