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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

GALENA (GAAM8)

Lat: 46.221°NLon: 112.22853°WElev: 6545.0ft.

NA

55°F

13°C

Humidity 71%
Wind Speed WSW 5 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 17 Aug 04:47 AM MDT
Extended Forecast for

Boulder MT

  • Today

    Today: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Partly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 53. South wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Mostly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 50%.

    High: 84 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. West southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 93. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. South southeast wind 5 to 7 mph becoming calm after midnight.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 90. Light west wind increasing to 5 to 10 mph in the afternoon.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. West northwest wind 5 to 11 mph.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 53. South wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 18 mph.
Monday
A chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Mostly sunny, with a high near 84. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 57. West southwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 58. South southeast wind 5 to 7 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 90. Light west wind increasing to 5 to 10 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 55. West northwest wind 5 to 11 mph.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Boulder MT
 46.24°N 112.1°W (Elev. 4898 ft)
Last Update:
3:16 am MDT Aug 17, 2025
Forecast Valid:
5am MDT Aug 17, 2025-6pm MDT Aug 23, 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