Phoenix Halloween Weather Forecast: Rain Could Return for First Time Since 1987
Phoenix Rain Forecast Threatens First Rainy Halloween Since 1987
Phoenix could record its first rainy Halloween since 1987 as strong Pacific El Niño conditions drive a series of incoming storm systems toward Arizona and Southern California. National Weather Service data shows the desert city has not seen measurable precipitation on October 31 in nearly four decades, a drought that incoming moisture levels may finally break.
Storm Systems Bring Unsettled Weekend Weather
National Weather Service meteorologist Gabriel Lojero outlined the incoming weather pattern, stating that multiple storm systems are aligning to boost moisture across the region starting Friday. “There’s a potential for multiple days of rain across the area, so it looks like it’s going to be an unsettled weekend,” Lojero said, as reported by KJZZ. Reporting from news.unitedforequity.org noted that the active weather arrives on the heels of a super El Niño charged by climate change, which has already triggered recent extreme weather across Arizona.
Rainfall Projections for the Holiday Week
Forecasters report that wet trick-or-treating conditions are not completely guaranteed, as the heaviest rainfall may bracket the holiday itself. The National Weather Service forecast outlines a progression of conditions:
An active period of weather will return later this week and through Halloween weekend. Although severe weather is currently not expecting, there could be periods of heavy rainfall, leading to a risk of flash flooding on Friday & Sunday. Stay tuned for further updates. #azwx #cawx pic.twitter.com/Jy1yLmpq3q
- Tuesday and Wednesday: Sunny and warm with highs near 86 degrees and light east winds around 5 mph.
- Thursday: Partly sunny with a high near 86. A 50% chance of showers develops late Thursday night after 11 p.m., bringing overnight lows near 67 and potential rainfall between a tenth and a quarter of an inch.
- Friday: The highest storm risk of the week carries an 80% chance of showers and possible thunderstorms. Highs near 77 with expected rainfall amounts between a quarter and half an inch.
- Saturday (Halloween): A 30% chance of daytime showers and a 50% chance of rain at night. Partly sunny skies with a high near 77 and expected precipitation between a tenth and a quarter of an inch.
- Sunday: Showers and possible thunderstorms become likely with a 70% chance of precipitation. High near 71 with projected rainfall totals between a half and three-quarters of an inch.
Severe Weather Triggers Emergency Requests Across Arizona
The incoming Phoenix front coincides with widespread severe weather across Arizona. In the Four Corners region, persistent rainfall has triggered flooding, water rescues, and evacuations across communities on the Navajo Nation and in New Mexico, according to news.unitedforequity.org. Near the Mogollon Rim, the community of Heber-Overgaard sustained heavy damage from a confirmed tornado. These concurrent disasters prompted Arizona State Rep. Walt Blackman to urge Governor Katie Hobbs to declare a state of emergency for the hardest-hit parts of the state.
Meteorologists Cannot yet Predict Exact Rainfall Totals
While the National Weather Service tracks the approaching moisture, meteorologists emphasize that it remains too early to predict exact valley-wide rainfall totals for the week. Pockets of thunderstorms and heavier downpours remain possible as the weekend approaches. Local property owners and event organizers monitoring the shifting forecasts should consult local public safety advisories if heavy precipitation causes localized flooding in urban corridors.
