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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

BIG SHEEP MOUNTAIN (LCFM8)

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

NA

60°F

16°C

Humidity 94%
Wind Speed ENE 7 MPH
Barometer NA
Dewpoint 58°F (14°C)
Visibility NA
Last update 19 Sep 11:08 AM MDT
Extended Forecast for

23 Miles WSW Brockway MT

Flood Watch until September 20, 06:00pm
Flood Advisory until September 19, 01:15pm
Click here for hazard details and duration
Flood Watch
Flood Advisory
  •  
    Flood Watch until September 20, 06:00pm
    Flood Advisory until September 19, 01:15pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 66 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 5am, then showers likely. Patchy fog before 4am, then patchy fog after 5am. Low around 50. East northeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    Low: 50 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly before 9am. Patchy fog before noon. High near 62. East wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    High: 62 °F

    Showers and
    Patchy Fog
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 48. East southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 70. South southeast wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 70 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. South southeast wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77. South southeast wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52. South southeast wind around 6 mph.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Today
Showers and possibly a thunderstorm. Patchy fog. High near 66. East northeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Tonight
Showers and possibly a thunderstorm before 5am, then showers likely. Patchy fog before 4am, then patchy fog after 5am. Low around 50. East northeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Sunday
Showers, mainly before 9am. Patchy fog before noon. High near 62. East wind 11 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Sunday Night
Mostly cloudy, with a low around 48. East southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 70. South southeast wind 6 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 49. South southeast wind 10 to 13 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 77. South southeast wind 8 to 11 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 52. South southeast wind around 6 mph.
Wednesday
Mostly sunny, with a high near 80. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 53. South southeast wind 3 to 5 mph.
Thursday
Sunny, with a high near 82. Light south southeast wind becoming south 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 54.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
23 Miles WSW Brockway MT
 47.23°N 106.25°W (Elev. 2598 ft)
Last Update:
4:01 am MDT Sep 19, 2026
Forecast Valid:
11am MDT Sep 19, 2026-6pm MDT Sep 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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