Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Click a location below for detailed forecast.

Last Map Update: Fri, Sep 18, 2026 at 10:36:14 pm MDT

Watches, Warnings & Advisories

National Weather Service Great Falls, MT

Zoom Out

Flash Flood Watch

Flood Watch

Hazardous Weather Outlook

Hydrologic Outlook

Heavy Rain Trends South

Chances for rain trend southward as the associated upper-level low tracks towards Wyoming. The slow-moving system will likely bring heavy rain to the southern CWA Friday night through Saturday night. Areas in the north will see less rain. Chances for any precipitation rapidly diminish approaching the Canadian border. Travelling on unpaved roads will be difficult. Localized heavy rain could cause minor flooding in prone areas south of Highway 200.