The National Weather Service in Phoenix has issued a warning for Valley residents as they brace for a significant rise in temperatures over the coming days. Forecasters predict that temperatures will soar into the low 100s, reaching nearly 10 degrees above the average for this time of year. The shift in weather comes as a stark contrast to the cloudy skies and light rain that had recently graced the region.
On May 9, 2025, the high temperature is expected to hit around 101 degrees Fahrenheit, accompanied by sunny skies and light winds of about 5 mph. The evening will see a low of nearly 77 degrees, with calm winds continuing. The forecast for May 10 indicates a slight uptick, with temperatures expected to reach nearly 102 degrees, and winds gusting between 10 mph and 15 mph. Evening lows for that day are projected to be around 79 degrees.
As the weekend approaches, the temperature is set to rise even further. According to the National Weather Service, a high of approximately 104 degrees is anticipated for Mother's Day on May 11, with mostly sunny conditions and winds between 10 mph and 15 mph. Gusts could potentially reach up to 20 mph. The expected low for that night is about 78 degrees, with partly cloudy skies.
Looking ahead to May 12, residents can expect a gradual cooling trend, with high temperatures predicted to drop to around 99 degrees and lows of 72 degrees. Winds will remain moderate, blowing between 5 mph and 10 mph, with gusts possibly reaching 20 mph. By May 13, temperatures are expected to return to seasonal averages, with a high near 87 degrees.
Matt Salerno, a meteorologist at the National Weather Service office in Phoenix, explained that such drastic temperature shifts are common during the transitional months between spring and summer. "Weather systems progress through the region and drastically cool down the surrounding area, then as the storm passes, residents are met with a ridge of high pressure that gives the area a higher atmospheric pressure and more dry air," Salerno noted. This high-pressure ridge is particularly effective at heating the Phoenix area, especially as the angle of the sun shifts toward summer.
Salerno urged Valley residents to practice heat safety as they transition into the hotter months. He recommended taking frequent breaks in the shade or indoors, emphasizing the importance of caution as temperatures consistently reach the 100s. With the forecasted highs, it’s essential for residents to stay hydrated and avoid strenuous outdoor activities during peak heat hours.
As the weekend approaches, the National Weather Service's predictions have prompted officials to remind the public about the potential dangers of extreme heat. Residents are advised to monitor local weather updates and prepare for the high temperatures that are typical for this time of year in the Valley.
The weather service also highlighted that relief is on the horizon. Following the weekend's soaring temperatures, highs in the Valley are expected to drop into the 90s and 80s in the following week, providing a much-needed respite from the heat.
For those looking for the latest weather updates, the FOX 10 Phoenix weather page offers a comprehensive view of current conditions, forecasts, and live video feeds. Residents can also download the free FOX 10 Weather app, available on both Apple iOS and Android, to stay informed about the changing weather patterns.
In summary, as Phoenix prepares for a dramatic rise in temperatures this weekend, residents are reminded to take the necessary precautions to stay safe in the heat. With highs expected to reach 105 degrees on Sunday, it's crucial to remain vigilant and prioritize health and safety during this transition into the summer months.
