Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Gary Cooper Bridge I-15 MP 242 (MTYEP)

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

80°F

27°C

Humidity	18%
Wind Speed	SSW 10 MPH
Barometer	NA
Dewpoint	33°F (1°C)
Visibility	NA
Heat Index	78°F (26°C)
Last update	31 Aug 05:15 PM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Cascade MT

Tonight
Low: 48 °F
Mostly Clear
Tuesday
High: 87 °F
Mostly Sunny
Tuesday Night
Low: 54 °F
Slight Chance
Showers then
Mostly Cloudy
Wednesday
High: 81 °F
Mostly Sunny
then Chance
Showers
Wednesday Night
Low: 48 °F
Chance
Showers
Thursday
High: 77 °F
Mostly Sunny
Thursday Night
Low: 47 °F
Partly Cloudy
Friday
High: 76 °F
Mostly Sunny
then Slight
Chance
Showers
Friday Night
Low: 47 °F
Chance
Showers

Detailed Forecast

Tonight

Mostly clear, with a low around 48. Southwest wind around 6 mph becoming calm in the evening.

Tuesday

Mostly sunny, with a high near 87. Calm wind becoming east southeast 5 to 8 mph in the afternoon.

Tuesday Night

A 20 percent chance of showers between 10pm and midnight. Mostly cloudy, with a low around 54. East wind 8 to 11 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.

Wednesday

A chance of showers between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 81. South southwest wind 8 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

Wednesday Night

A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 48. South southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 28 mph.

Thursday

Mostly sunny, with a high near 77. Southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

Thursday Night

Partly cloudy, with a low around 47. West southwest wind 9 to 14 mph becoming light southwest after midnight. Winds could gust as high as 24 mph.

Friday

A slight chance of showers after noon. Mostly sunny, with a high near 76. Calm wind becoming west northwest 5 to 9 mph in the afternoon.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 47.

Saturday

A slight chance of showers. Mostly sunny, with a high near 73.

Saturday Night

A chance of showers. Mostly cloudy, with a low around 47.