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

Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

FISHTAIL (FSLM8)

Lat: 45.45806°NLon: 109.57139°WElev: 4550.0ft.

NA

90°F

32°C

Humidity 25%
Wind Speed NE 5 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index87°F (31°C)
Last update 26 Jul 04:22 PM MDT
Extended Forecast for

Roscoe MT

Heat Advisory July 26, 05:16pm until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 05:16pm until July 26, 09:00pm

    NOW until 9:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before midnight. Patchy smoke before midnight. Mostly cloudy, with a low around 66. East southeast wind 5 to 8 mph becoming west after midnight.

    Low: 66 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 5pm. Patchy smoke between 9am and 3pm. Partly sunny, with a high near 89. Light and variable wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 89 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Patchy smoke after midnight. Partly cloudy, with a low around 63. Southeast wind around 7 mph becoming southwest after midnight.

    Low: 63 °F

    Mostly Cloudy
    then Patchy
    Smoke

  • Tuesday

    Tuesday: Patchy smoke before 9am. Sunny and hot, with a high near 93. West southwest wind around 6 mph becoming east northeast in the afternoon.

    High: 93 °F

    Patchy Smoke
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. North wind around 8 mph becoming south southwest in the evening.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 91. Light and variable wind becoming north around 6 mph in the afternoon.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. Southwest wind around 7 mph.

    Low: 62 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Patchy smoke. Partly sunny and hot, with a high near 90. East wind around 7 mph.
Tonight
A 20 percent chance of showers and thunderstorms before midnight. Patchy smoke before midnight. Mostly cloudy, with a low around 66. East southeast wind 5 to 8 mph becoming west after midnight.
Monday
A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 5pm. Patchy smoke between 9am and 3pm. Partly sunny, with a high near 89. Light and variable wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 20%.
Monday Night
Patchy smoke after midnight. Partly cloudy, with a low around 63. Southeast wind around 7 mph becoming southwest after midnight.
Tuesday
Patchy smoke before 9am. Sunny and hot, with a high near 93. West southwest wind around 6 mph becoming east northeast in the afternoon.
Tuesday Night
Partly cloudy, with a low around 64. North wind around 8 mph becoming south southwest in the evening.
Wednesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny and hot, with a high near 91. Light and variable wind becoming north around 6 mph in the afternoon.
Wednesday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. Southwest wind around 7 mph.
Thursday
Sunny and hot, with a high near 93. Calm wind becoming northeast around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 64. North northeast wind around 7 mph becoming southwest after midnight.
Friday
Sunny and hot, with a high near 93. Light and variable wind becoming north northeast 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 64. Northeast wind 5 to 7 mph becoming southwest after midnight.
Saturday
Sunny and hot, with a high near 99. Light and variable wind becoming northeast 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 66. West northwest wind 9 to 11 mph becoming southwest in the evening.
Sunday
Sunny and hot, with a high near 93. Southwest wind 5 to 8 mph becoming east northeast in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Roscoe MT
 45.36°N 109.5°W (Elev. 5200 ft)
Last Update:
3:48 pm MDT Jul 26, 2026
Forecast Valid:
5pm MDT Jul 26, 2026-6pm MDT Aug 2, 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