Flagstaff, Ariz. – Holiday travelers in northern Arizona should prepare for changing skies as thunderstorms build over Flagstaff on Labor Day. Afternoon downpours and lightning could cause slick travel along I-40 and I-17 starting Monday, raising safety concerns for anyone on the road.
According to the National Weather Service in Flagstaff, storms are expected after 11 a.m. Monday, with rain chances increasing through the afternoon. Highs will climb to the low 80s before clouds and showers move in. Storm activity may bring heavy rain in pockets, making visibility difficult for drivers and prompting possible delays.
Sunday remains calm, with sunshine and highs near 83, giving holiday visitors one more dry day before unsettled weather arrives. By Tuesday, storm chances rise to 40 percent, with temperatures dipping into the lower 80s. Showers may linger into Wednesday, bringing another round of wet commutes and potential minor flooding in low-lying areas.
Residents are urged to avoid unnecessary travel during peak storm hours, charge devices in case of lightning-related outages, and allow extra driving time on major highways. Outdoor Labor Day plans should include backup indoor options.
Rain chances taper later in the week, but scattered showers remain possible through Friday. Gusty winds and cooler highs in the 70s will settle in as the holiday week winds down.
Warnings may be updated as storms develop, and drivers are encouraged to check conditions before leaving home.
Five Day Forecast for Flagstaff, AZ
- Monday (Labor Day): 20% chance of storms after 11 a.m., high 83. Evening showers possible.
- Tuesday: 40% chance of storms, high 81.
- Wednesday: 50% chance of showers and storms, high 80.
- Thursday: 30% chance of storms, high 79.
- Friday: Showers likely, high 77 with gusty winds.
