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 >

Current conditions at

Gary Cooper Bridge I-15 MP 242 (MTYEP)

Lat: 47.13948°NLon: 111.85908°WElev: 3427.0ft.

NA

57°F

14°C

Humidity 81%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 51°F (11°C)
Visibility NA
Last update 19 Sep 02:45 AM MDT
Extended Forecast for

Cascade MT

  • Overnight

    Overnight: A 50 percent chance of rain. Cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Chance Rain

  • Saturday

    Saturday: A 40 percent chance of rain, mainly before 1pm. Cloudy, with a high near 68. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 68 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47. East southeast wind around 6 mph becoming calm in the evening.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 75. Light south southwest wind.

    High: 75 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. Southeast wind around 5 mph becoming light and variable in the evening.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. South southwest wind 3 to 8 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. South southwest wind 5 to 7 mph.

    Low: 50 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80. West southwest wind around 6 mph.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of rain. Cloudy, with a low around 53. Calm wind.
Saturday
A 40 percent chance of rain, mainly before 1pm. Cloudy, with a high near 68. Calm wind becoming east northeast around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 47. East southeast wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 75. Light south southwest wind.
Sunday Night
Mostly clear, with a low around 48. Southeast wind around 5 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 80. South southwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 50. South southwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 80. West southwest wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 50.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cascade MT
 47.27°N 111.7°W (Elev. 3412 ft)
Last Update:
12:31 am MDT Sep 19, 2026
Forecast Valid:
3am MDT Sep 19, 2026-6pm MDT Sep 25, 2026
 
Forecast Discussion
 
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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