Flagstaff, AZ – Afternoon thunderstorms could develop Tuesday across Flagstaff, bringing a risk of lightning and brief downpours that may impact late-day travel and outdoor activities. Storm chances rise after 11 a.m., with the highest threat between midafternoon and early evening.
According to the National Weather Service, increasing clouds and highs near 91°F will set the stage for scattered storms Tuesday, followed by a higher likelihood of showers Tuesday night. Winds from the southwest could gust to 15 mph during the day, adding to shifting road and trail conditions as weather changes quickly.
While severe storms are not expected, localized heavy rain could create ponding on roadways, especially along Milton Road, Route 66, and low-lying residential streets. Lightning poses a safety risk for hikers and outdoor workers. Residents are advised to move activities indoors when thunder is heard and secure loose outdoor items.
Storm activity should ease overnight, but another round of showers is possible Wednesday, keeping conditions unsettled midweek. Updates will be issued if thunderstorm coverage increases.
Five Day Forecast for Flagstaff, AZ:
- Monday: Mostly sunny, slight chance of storms after 11 a.m. High 91°F, low 54°F.
- Tuesday: 20% chance of storms after 11 a.m., increasing clouds. High 91°F, low 55°F.
- Wednesday: Showers likely, thunder possible after 11 a.m. High 88°F, low 54°F.
- Thursday: Storms likely after 11 a.m., partly sunny. High 84°F, low 52°F.
- Friday: 50% chance of showers, mainly after 11 a.m. High 80°F, low 51°F.




