
The last few days of monsoon season brought wacky weather to Tempe as Arizona State prepared to play college football at home. Heavy rain forced tailgaters to take cover from flash flooding.
The game was in jeopardy with just a few hours until kickoff.
The initial forecast presented a questionable outlook for whether the college football game could be played as scheduled. Fortunately, clear skies prevailed and it ended up being a gorgeous night for a resilient Big-12 victory for the Sun Devils.
When is ‘Monsoon Season’ in Tempe?
Tempe is nestled into the valley of the Phoenix mountains. The region is known for its desert ecosystem.
Part of that ecosystem includes the weather.
Daily temperatures typically hover between 90-95º in late September with nighttime lows between 70-75º. Some days are hotter. Some days are cooler. Obviously.
Peak monsoon season occurs from mid-June through the month of September but the most intense and active weather typically occur in July and August. The University of Arizona was forced to cancel football practice last month after Tucson got smacked by a nasty storm.
A seasonal shift in wind patterns brings increased moisture from the Gulf of Mexico and the Pacific Ocean to Arizona, which often causes intense thunderstorms in the late afternoon for 30-60 minutes. This latest occurrence came out of nowhere.
Arizona State got hammered.
Kickoff between Arizona State and TCU was scheduled for 6:00 p.m. local time. Clouds started to form in the region around 2:30/3:00. Check out these photos captured by @AZphotog75!
They looked pretty ominous just 15 minutes later.
Sure enough, the skies opened up not too long thereafter. It started with some lightning and a drizzle.
Lightning has struck and rain is pouring down here in Tempe. ⛈️@FOX10Phoenix pic.twitter.com/Y2GKYa42m2
— Blake Niemann (@Blakes_Take2) September 26, 2025
And then it really started to come down.
Huge downpour of rain coming down on the ASU campus in Tempe right now. Anyone driving to Mountain America Stadium, be careful! 🌧 #CollegeFootball #ActivateTheValley #SunDevils #ForksUp pic.twitter.com/EnEYcz0nZR
— Caleb Bouchy (@CTreySports) September 26, 2025
The rain sent everybody into a frenzied panic as they ran for cover.
Tempe, Arizona, September 26, 2025 – Heavy rain poured across the city this afternoon, overwhelming streets and causing flash flooding near the Arizona State University campus. Visibility dropped sharply as the storm intensified, leaving drivers struggling on the road. Students… pic.twitter.com/Hf7dgpMFas
— Errold Glenn Elad (@DocErrold) September 26, 2025
People making their way to Tempe for the game drove through a downpour.
Heavy rain heading into Tempe for the ASU homecoming game… pic.twitter.com/ZN3SjINyKj
— 10,000 Takes Sports Talk MN (@10Takes) September 26, 2025
The radar did not initially show any signs of stopping.
Tailgaters were forced to either take shelter or embrace the elements.
It is POURING again https://t.co/mq57L3KP8j pic.twitter.com/k8rjaxB6MT
— NCAA Buzzer Beaters & Game Winners (@NCAABuzzerBters) September 26, 2025
Meanwhile, the streets started to fill with water.
It is SERIOUSLY Flooded here in Tempe with 3 hours til Kickoff of Arizona State vs #24 TCU pic.twitter.com/3EzVaLvjqa
— NCAA Buzzer Beaters & Game Winners (@NCAABuzzerBters) September 26, 2025
Even though the rain eventually died off and moved out of Tempe with time to spare, the flooding still presented an issue. This is how it looked outside of the stadium with less than two hours until kickoff:
Water levels eventually dropped and the streets were damp but not completely flooded as fans made their way into the game. Arizona State went on to beat TCU by three. Crisis adverted!