Arizona – Morning light spreads across desert rooftops, and the air already feels mild for late December. In Phoenix, winter takes a softer tone today as sunshine pushes temperatures well above average, even as a wetter pattern waits just ahead.
According to the National Weather Service in Phoenix, conditions stay mostly sunny today with highs reaching the mid-70s. Light east winds keep the morning comfortable, though clouds increase later as moisture approaches from the Pacific. The calm start offers ideal conditions for errands and travel across the Valley.
Changes arrive quickly. Showers become likely Wednesday night and continue into New Year’s Day 2026. Rain chances climb to around 60 percent, with occasional heavier bursts possible. While widespread flooding is not expected in the Phoenix metro, brief ponding may develop on busy roadways like I-10, Loop 202, and surface streets during stronger showers.
Temperatures cool slightly but remain mild by winter standards. Highs dip into the upper 60s on New Year’s Day, with lows staying near 59 degrees. Desert drivers should watch for slick pavement during rainfall, especially after long dry stretches that leave oil residue on roads.
By Thursday night and Friday, rain chances slowly taper. Skies brighten, and highs rebound into the low 70s, signaling a return to quieter conditions. The first weekend of 2026 looks partly sunny and seasonable, with dry weather favored and comfortable afternoons for outdoor plans.
Plan ahead if you’re traveling for New Year’s celebrations. Keep headlights on during rain, allow extra braking distance, and stay alert during evening commutes. Desert winter weather can shift fast, even when it starts calm.
Seeing rain clouds build where you live? Share what conditions look like across the Valley.
Five-Day Outlook for Phoenix, Arizona
- Today: Mostly sunny, warm, high near 75°F.
- Wednesday: Increasing clouds, high near 73°F.
- New Year’s Day 2026: Showers likely, high near 69°F.
- Friday: Partly sunny, drying out, high near 71°F.
- Saturday: Partly sunny, mild, high near 71°F.
