Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

Lat: 46.71854°NLon: 113.29534°WElev: 3901.0ft.

unknown precip

66°F

19°C

Humidity 67%
Wind Speed WNW 2 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Last update 26 Aug 10:32 PM MDT
Extended Forecast for

Potomac MT

  • Tonight

    Tonight: A 20 percent chance of rain before midnight.  Partly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Thursday

    Thursday: A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.  Chance of precipitation is 20%.

    High: 90 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Patchy smoke before 1am. Partly cloudy, with a low around 47. Light and variable wind.

    Low: 47 °F

    Patchy Smoke

  • Friday

    Friday: Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm  in the evening.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 77. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance Rain
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before midnight, then rain likely after midnight.  Mostly cloudy, with a low around 39. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of rain.  Partly sunny, with a high near 68.

    High: 68 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 51. Calm wind.
Thursday
A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Patchy smoke before 1am. Partly cloudy, with a low around 47. Light and variable wind.
Friday
Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 48. West wind around 5 mph becoming calm in the evening.
Saturday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 77. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 39. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of rain. Partly sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 36.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 41.
Wednesday
Mostly sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Potomac MT
 46.89°N 113.56°W (Elev. 3707 ft)
2:01 pm MDT Aug 26, 2026
10pm MDT Aug 26, 2026-6pm MDT Sep 2, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database