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

BIG SHEEP MOUNTAIN (LCFM8)

Lat: 47.02819°NLon: 105.80472°WElev: 3172.0ft.

NA

77°F

25°C

Humidity 45%
Wind Speed SSE 10 MPH
Barometer NA
Dewpoint 54°F (12°C)
Visibility NA
Heat Index78°F (26°C)
Last update 16 Aug 08:08 PM MDT
Extended Forecast for

Brockway MT

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 9pm and midnight. Partly cloudy, with a low around 61. Breezy, with a southeast wind 19 to 24 mph becoming light and variable. Winds could gust as high as 34 mph. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms and
    Breezy then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 88. Southwest wind 6 to 9 mph becoming north northwest in the afternoon.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly between 9pm and midnight. Increasing clouds, with a low around 63. West southwest wind 5 to 8 mph becoming calm after midnight.

    Low: 63 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 91. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 91 °F

    Slight Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. Southeast wind 3 to 6 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Calm wind becoming southeast 5 to 8 mph in the morning.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69. South southeast wind around 9 mph.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. South southeast wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. West wind 6 to 10 mph becoming north northwest after midnight.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms between 9pm and midnight. Partly cloudy, with a low around 61. Breezy, with a southeast wind 19 to 24 mph becoming light and variable. Winds could gust as high as 34 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 88. Southwest wind 6 to 9 mph becoming north northwest in the afternoon.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly between 9pm and midnight. Increasing clouds, with a low around 63. West southwest wind 5 to 8 mph becoming calm after midnight.
Monday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 91. Calm wind becoming southeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 63. Southeast wind 3 to 6 mph.
Tuesday
Sunny and hot, with a high near 97. Calm wind becoming southeast 5 to 8 mph in the morning.
Tuesday Night
Mostly clear, with a low around 69. South southeast wind around 9 mph.
Wednesday
Sunny and hot, with a high near 99. South southeast wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 64. West wind 6 to 10 mph becoming north northwest after midnight.
Thursday
Sunny, with a high near 85. North northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Thursday Night
A 30 percent chance of showers. Mostly clear, with a low around 56. North wind 5 to 10 mph, with gusts as high as 18 mph.
Friday
A slight chance of showers. Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brockway MT
 47.3°N 105.76°W (Elev. 2589 ft)
Last Update:
7:02 pm MDT Aug 16, 2025
Forecast Valid:
8pm MDT Aug 16, 2025-6pm MDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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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