National Weather Service United States Department of Commerce

Dangerous Heat and Humidity Building from the Plains to the East Coast

Strengthening high pressure will bring much above normal high and low temperatures. Widespread highs in the 90s to 100 combined with dewpoints surging into the mid and upper 70s will create heat indices as high as 110 through this weekend. In addition, overnight temperatures in the 70s to low 80s will reduce the ability of the body to recover from daytime heating. Read More >

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Last Map Update: Wed, Jul. 17, 2019 at 5:30:09 pm MDT

National Weather Service Great Falls, MTNational Weather Service Glasgow, MTNational Weather Service Bismarck, ND
National Weather Service Missoula, MTZoom

National Weather Service Rapid City, SD
National Weather Service Pocatello, IDNational Weather Service Western and Central WyomingNational Weather Service Cheyenne, WY

Isolated severe thunderstorms are possible east of a Miles City to Sheridan line late this afternoon into the evening. The primary threats are large hail, strong wind gusts, and heavy downpours. Please pay attention to NOAA weather radio for any watches or warnings that may be issued.


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