Overview
- Rain chances rise Wednesday night with about a 50% chance in Phoenix late on New Year's Eve and higher likelihood on New Year's Day, with roughly 0.25 to 0.5 inches possible in parts of the Valley.
- Valley winds are forecast near 10–15 mph with gusts up to 25 mph, with stronger gusts near 35 mph possible along the Colorado River Valley.
- Phoenix stays unusually mild before cooling, with highs near 76°F Tuesday, around 73°F Wednesday and 69°F on New Year's Day, and temperatures near 61°F around midnight.
- Showers are expected to arrive in rounds that are light to steady rather than a full washout, tapering late Thursday with drier conditions returning Friday.
- ABC15 has declared a Weather Action Day for Thursday, ADOT is urging safe travel and discouraging highway snow play parking, and county air officials note potential air-quality improvement with no wood-burning restrictions in effect.