Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

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Last Map Update: Wed, Jul 1, 2026 at 1:50:13 pm MDT

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National Weather Service Great Falls, MT

Flash Flood Watch

Flood Advisory

Flood Watch

Special Weather Statement

Thunderstorms on Wednesday (July 1)

Fourth of July Outlook

Thunderstorms are expected to roll through the region between 1 PM and 8 PM tomorrow (July 1), moving from southwest to northeast. Locations in light green (generally south and east of Missoula) could see lightning and brief, heavy downpours. If you are in the darker green area on the map (including Butte, Helena, and Great Falls), be prepared for isolated wind gusts over 50 mph and the potential for hail. Keep an eye on the sky tomorrow afternoon, have a way to receive warnings, and remember: when thunder roars, head indoors!

Expect warm temperatures across Montana this holiday weekend, with highs climbing steadily from the 70s on Friday into the mid-80s and 90s by Sunday. While most of the weekend looks great for outdoor celebrations, there are daily chances for scattered thunderstorms, primarily localized East of the Continental Divide. Though the overall probability of severe weather remains low, any developing storm could bring localized hazards. Safety Impacts: Fireworks & Wind: Even non-severe thunderstorms can produce gusty, erratic winds. Be highly mindful of sudden wind shifts if you are lighting fireworks. Lightning: Outdoor gatherings are highly vulnerable to lightning strikes. Take shelter inside a sturdy building or hard-topped vehicle at the first sign of lightning or thunder. Heat: With temperatures pushing into the 90s by Sunday, remember to drink water before you feel thirsty and reapply SPF 30+ sunscreen every two hours.