Arizona – The desert woke up calm and clear this morning, with the moon fading over Phoenix and temperatures already near 60 degrees. It feels more like spring than the first official week of winter, but change is brewing fast as the holiday travel window opens.
According to the National Weather Service, Phoenix warms rapidly today under sunny skies, reaching near 80 degrees by afternoon. Winds stay light, making for smooth driving conditions along I-10, Loop 202, and surface streets. Travelers heading out early for Christmas errands should see no weather-related delays today.
Clouds increase Tuesday as moisture pushes in from the Pacific. Highs slip slightly into the upper 70s, but the bigger shift arrives late Tuesday into Wednesday. Showers become likely by Wednesday morning, with rain chances climbing to near 90 percent at times. Roads could turn slick quickly, especially during morning and evening travel windows.
By Wednesday, Christmas Eve brings the weather tease. Temperatures cool into the mid-70s, clouds thicken, and periods of rain continue across the Valley. While no snow or freezing weather is expected in Phoenix, reduced visibility and wet pavement could slow holiday traffic near Sky Harbor, downtown interchanges, and along I-17.
Forecasters note this system marks an early winter signal for the Southwest. To be fair, the rain is welcome, but it can catch drivers off guard after weeks of dry roads. Watch for pooling water in low spots and allow extra time if traveling Wednesday.
Conditions gradually improve Christmas Day, though scattered showers may linger. By Thursday and Friday, temperatures settle into the low 70s with lingering cloud cover.
Plan outdoor plans early this week, keep umbrellas handy by Wednesday, and stay alert for changing conditions. Traveling for Christmas Eve? Let us know what the roads look like where you are.
Five Day Outlook for Phoenix, Arizona
Monday: Sunny and warm, high near 81
Tuesday: Increasing clouds, high near 79
Wednesday: Showers likely, cooler, high near 76
Christmas Day: Showers early, then improving, high near 73
Friday: Mostly cloudy, mild, high near 72
