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

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

Butte, Bert Mooney Airport (KBTM)

Lat: 45.95472°NLon: 112.4975°WElev: 5545.0ft.

Partly Cloudy

54°F

12°C

Humidity 81%
Wind Speed SSW 6 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 17 Aug 07:20 AM MDT
Extended Forecast for

8 Miles N Dewey MT

  • Today

    Today: A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Widespread haze before 8am. Increasing clouds, with a high near 67. Southwest wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Slight Chance
    Rain then
    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 49. South southwest wind 6 to 8 mph becoming north in the evening. Chance of precipitation is 40%.

    Low: 49 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 72. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 72 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 53. West wind 6 to 10 mph becoming north in the evening.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 78. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Widespread haze before 8am. Increasing clouds, with a high near 67. Southwest wind 5 to 9 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 chance of showers and thunderstorms before 9pm, then a chance of rain between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 49. South southwest wind 6 to 8 mph becoming north 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 72. Southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 53. West wind 6 to 10 mph becoming north in the evening.
Tuesday
Sunny, with a high near 78. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles N Dewey MT
 45.89°N 112.84°W (Elev. 7633 ft)
Last Update:
3:30 am MDT Aug 17, 2025
Forecast Valid:
7am 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