The National Weather Service office in Great Falls has issued a Heat Advisory running from noon Friday through 9 p.m. Monday for portions of central, north central, and southwest Montana — including the Helena area. Forecasters are calling for daytime highs between 95 and 105 degrees, with overnight lows offering only modest relief in the 60 to 70 degree range.
The NWS warned that sustained heat at those levels can cause heat-related illness, particularly for older residents, young children, and anyone working or spending extended time outdoors. The agency is urging people to drink plenty of fluids, stay in air-conditioned spaces, avoid direct sun during peak afternoon hours, and check on neighbors and relatives who may not have access to cooling.
Helena's elevation provides some buffer against the most extreme heat seen in lower valleys, but multi-day stretches above 95 degrees are uncommon here and can stress the body even for people accustomed to Montana summers. The city's senior centers and public libraries serve as de facto cooling centers during heat events, and residents are encouraged to take advantage of those spaces.
Anyone experiencing symptoms of heat exhaustion — heavy sweating, weakness, cold or pale skin, a weak pulse, nausea — should move to a cool location and seek medical attention if symptoms worsen. Heat stroke, characterized by a body temperature above 103 degrees and confusion or loss of consciousness, is a medical emergency.