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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Georgetown Lake (MTGTL)

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

NA

66°F

19°C

Humidity 46%
Wind Speed SSW 11 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 17 Aug 05:00 PM MDT
Extended Forecast for

14 Miles SSW Georgetown MT

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 57. West southwest wind around 8 mph. Chance of precipitation is 80%.

    High: 57 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West southwest wind 6 to 9 mph becoming southeast in the evening. Chance of precipitation is 40%.

    Low: 44 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 63. Southwest wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. Southwest wind 6 to 9 mph becoming southeast in the evening.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. South wind 8 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.

    Low: 50 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 57. West southwest wind around 8 mph. Chance of precipitation is 80%.
Tonight
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 44. West southwest wind 6 to 9 mph becoming southeast in the evening. Chance of precipitation is 40%.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 63. Southwest wind 9 to 13 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 50. Southwest wind 6 to 9 mph becoming southeast in the evening.
Tuesday
Sunny, with a high near 70. South wind 8 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles SSW Georgetown MT
 46°N 113.32°W (Elev. 9063 ft)
Last Update:
2:30 pm MDT Aug 17, 2025
Forecast Valid:
5pm MDT Aug 17, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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