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 44%
Wind Speed NW 13 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 17 Jun 12:00 PM MDT
Extended Forecast for

15 Miles SW Georgetown MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 58. West northwest wind around 10 mph, with gusts as high as 24 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: A 30 percent chance of rain between 11pm and midnight. Partly cloudy, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 23 mph.

    Low: 39 °F

    Chance Rain
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 63. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. West northwest wind around 6 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 70. Calm wind becoming west around 6 mph in the afternoon.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 65.

    High: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

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

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 58. West northwest wind around 10 mph, with gusts as high as 24 mph.
Tonight
A 30 percent chance of rain between 11pm and midnight. Partly cloudy, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 23 mph.
Thursday
Sunny, with a high near 63. Calm wind becoming west northwest around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 43. West northwest wind around 6 mph becoming calm in the evening.
Juneteenth
Mostly sunny, with a high near 70. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 50.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles SW Georgetown MT
 46.04°N 113.49°W (Elev. 7700 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