The National Weather Service office in Great Falls issued a Heat Advisory for portions of southwest Montana, including the Helena area, that runs from noon Friday through 9 p.m. Sunday, July 26. Forecasters are warning residents to expect high temperatures up to 100 degrees during that window, with conditions posing a real risk of heat-related illness for anyone spending extended time outdoors or in homes without air conditioning.
The advisory, issued just before midnight Wednesday, covers central, north central, and southwest Montana. NWS meteorologists are urging people to drink plenty of fluids, stay in air-conditioned spaces during peak afternoon hours, stay out of direct sun, and check on neighbors and relatives — particularly older adults and those with health conditions that make heat more dangerous. Helena typically has a handful of days each summer that push toward triple digits, but a three-day stretch at or near 100 degrees puts sustained stress on people, animals, and infrastructure.
Helena's parks and public facilities can serve as cooling resources for residents without home air conditioning. Anyone showing signs of heat exhaustion — heavy sweating, weakness, cold or pale skin, or nausea — should move to a cool environment and seek medical attention if symptoms worsen. The advisory remains in effect through Sunday evening.