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 >

Current conditions at

ST. REGIS (STGM8)

Lat: 47.30711° N Lon: 115.10761° W Elev: 2678.0 ft.

NA

47°F

8°C

Humidity 100%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 18 Sep 06:02 AM MDT
Detailed forecast for

Lower Clark Fork Region

Today
Mostly cloudy. Areas of fog early in the morning. Highs in the 70s.
Tonight
Mostly cloudy. Chance of rain showers and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Chance of precipitation 50 percent. Lows in the mid 40s to lower 50s.
Saturday
Mostly cloudy in the morning then clearing. A 50 percent chance of rain. Patchy fog in the morning. Highs in the 70s.
Saturday Night
Mostly clear. Lows in the mid 40s to lower 50s.
Sunday
Sunny. Patchy fog in the morning. Highs in the mid 70s to lower 80s.
Sunday Night
Clear. Lows in the mid 40s to lower 50s.
Monday
Mostly sunny. Highs in the mid 70s to lower 80s.
Monday Night
Mostly clear. Lows in the mid 40s to lower 50s.
Tuesday
Partly cloudy. Highs in the 70s to lower 80s.
Tuesday Night
Mostly clear. Lows in the mid 40s to lower 50s.
Wednesday
Partly cloudy. Highs in the 70s.
Wednesday Night
Partly cloudy. Lows in the mid 40s to lower 50s.
Thursday
Partly cloudy. Highs in the mid 70s to lower 80s.



Basemap Options
Click map to change the forecast location
Loading map...
1222 AM MDT Fri Sep 18 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database