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

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Current conditions at

BUFFALO RAPIDS/TERRY (BRTM)

Lat: 46.77806°NLon: 105.29944°WElev: 2270.0ft.

NA

83°F

28°C

Humidity 35%
Wind Speed SSE 4 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Heat Index82°F (28°C)
Last update 17 Sep 04:30 PM MDT
Extended Forecast for

Fallon MT

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 56. Southeast wind 12 to 17 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 26 mph.

    Low: 56 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 82. South southeast wind 5 to 7 mph.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a chance of showers after 5am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 55. East northeast wind 3 to 7 mph. Chance of precipitation is 40%.

    Low: 55 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Showers. Patchy fog. High near 69. East wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.

    High: 69 °F

    Showers and
    Patchy Fog

  • Saturday Night

    Saturday Night: Showers. Patchy fog before 5am. Low around 51. East wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.

    Low: 51 °F

    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers likely. Cloudy, with a high near 65. East southeast wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    High: 65 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 50. East southeast wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 50 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 73. Southeast wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 73 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50. Southeast wind 7 to 13 mph, with gusts as high as 25 mph.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 56. Southeast wind 12 to 17 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 26 mph.
Friday
Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 82. South southeast wind 5 to 7 mph.
Friday Night
A chance of showers and thunderstorms before 1am, then a chance of showers after 5am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 55. East northeast wind 3 to 7 mph. Chance of precipitation is 40%.
Saturday
Showers. Patchy fog. High near 69. East wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Saturday Night
Showers. Patchy fog before 5am. Low around 51. East wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Sunday
Showers likely. Cloudy, with a high near 65. East southeast wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 50. East southeast wind 6 to 11 mph, with gusts as high as 21 mph.
Monday
Partly sunny, with a high near 73. Southeast wind 6 to 13 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 50. Southeast wind 7 to 13 mph, with gusts as high as 25 mph.
Tuesday
Sunny, with a high near 79. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 51. South southeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fallon MT
 46.82°N 105.15°W (Elev. 2198 ft)
Last Update:
4:01 pm MDT Sep 17, 2026
Forecast Valid:
5pm MDT Sep 17, 2026-6pm MDT Sep 24, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation