National Weather Service United States Department of Commerce

Monsoon Flood Threat in the Southwest; Hot in the South and Northwest

Monsoonal heavy rain will continue flash flood potential across the Southwest and Intermountain West to the central and southern Rockies through this weekend, especially in complex terrain, burn scars, and urban areas. Excessive heat and humidity with heat indices over 110 degrees will be common over much of the Deep South and interior Northwest this weekend. Read More >

Click a location below for detailed forecast.

Last Map Update: Sat, Jul. 31, 2021 at 9:53:54 am MDT

National Weather Service Missoula, MTZoom

National Weather Service Glasgow, MT
National Weather Service Boise, IDNational Weather Service Pocatello, IDNational Weather Service Billings, MT

Hot temperatures, increasing southeast winds, and low afternoon relative humidity values are expected to lead to elevated fire weather conditions on Sunday across portions of Central and North Central Montana. Any spark, man-made or nature-caused, may cause new fire starts. Please be aware of any activity that could cause a fire and adhere to local restrictions.
Slow moving showers and thunderstorms capable of producing heavy rainfall are possible on Monday, especially within the area covered by the Slight Risk. Heavy rains falling on recent burn scars could lead to dangerous debris flows. In addition to hydroplaning, motorist should be prepared for slippery roads given the recent extended dry period and subsequent buildup of oils on roadways. Be prepared to take action and seek higher ground should flash flooding occur.


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