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

41°F

5°C

Humidity 71%
Wind Speed NE 5 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 18 Jun 02:00 AM MDT
Extended Forecast for

5 Miles E Georgetown MT

  • Overnight

    Overnight: Mostly clear, with a low around 35. West northwest wind around 5 mph.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66. West wind 5 to 13 mph, with gusts as high as 22 mph.

    High: 66 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 35. West northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.

    Low: 35 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 72. East southeast wind 5 to 7 mph becoming west northwest in the afternoon.

    High: 72 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 35. West northwest wind around 5 mph.
Thursday
Sunny, with a high near 66. West wind 5 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 35. West northwest wind 8 to 13 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.
Juneteenth
Partly sunny, with a high near 72. East southeast wind 5 to 7 mph becoming west northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 43. Northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 35.
Monday
Sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles E Georgetown MT
 46.21°N 113.15°W (Elev. 7001 ft)
Last Update:
2:01 am MDT Jun 18, 2026
Forecast Valid:
2am MDT Jun 18, 2026-6pm MDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation