Flagstaff, Arizona – Summer sunshine holds strong across northern Arizona Sunday, but midweek thunderstorms could complicate plans leading into the 4th of July. Residents in Flagstaff can expect a hot, dry Sunday with highs near 88°F before rain chances rise Tuesday afternoon.
According to the National Weather Service, a 20 percent chance of thunderstorms returns to Flagstaff after 11 a.m. Tuesday, with gusty southwest winds up to 18 mph. While the early week remains mostly dry, isolated storms Tuesday and Wednesday could affect outdoor travel and increase wildfire risk. Anyone heading south via I-17 or planning early Independence Day celebrations should monitor conditions closely.
Monday offers mostly sunny skies and a high near 89°F, with breezy afternoon winds. Overnight lows remain mild, ranging from 47°F to 54°F through midweek. By Wednesday night and Thursday, storm chances climb again to 30 percent, keeping conditions unsettled through the holiday.
Here’s your 6-day outlook for Flagstaff:
- Sunday (June 29): Sunny and dry. High near 88°F. Light southwest breeze.
- Monday: Mostly sunny. High near 89°F. Southwest wind 6–10 mph.
- Tuesday: 20% chance of storms after 11 a.m. High of 87°F. Winds gusting to 18 mph.
- Wednesday: 30% chance of storms. High near 83°F. Continued gusty conditions.
- Thursday (July 3): 30% chance of thunderstorms. High near 80°F. Breezy with gusts up to 25 mph.
- Friday (4th of July): 20% chance of afternoon storms. Partly sunny. High near 79°F. Winds 16 mph, gusting up to 25 mph.
