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 72%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 18 Jun 02:30 AM MDT
Extended Forecast for

17 Miles SSW Georgetown MT

  • Overnight

    Overnight: Mostly clear, with a low around 35. West northwest wind around 6 mph.

    Low: 35 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 57. West wind 5 to 13 mph, with gusts as high as 24 mph.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38. West northwest wind 6 to 13 mph becoming east after midnight. Winds could gust as high as 24 mph.

    Low: 38 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 62. East southeast wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 62 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. West northwest wind 5 to 9 mph becoming light north. Winds could gust as high as 20 mph.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 56. Chance of precipitation is 40%.

    High: 56 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 35. West northwest wind around 6 mph.
Thursday
Sunny, with a high near 57. West wind 5 to 13 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 38. West northwest wind 6 to 13 mph becoming east after midnight. Winds could gust as high as 24 mph.
Juneteenth
Mostly sunny, with a high near 62. East southeast wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 47. West northwest wind 5 to 9 mph becoming light north. Winds could gust as high as 20 mph.
Saturday
A slight chance of rain, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 56. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
17 Miles SSW Georgetown MT
 45.97°N 113.35°W (Elev. 8287 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

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Chance of Precipitation