Phoenix gets one last warm, mostly dry day Thursday before the weather turns sharply wetter. Temperatures start in the mid-60s and climb to about 86 degrees, but Friday brings a Flood Watch, thunderstorms and a much cooler high near 76. The unsettled pattern then returns for Halloween night and continues into a soggy Sunday.
Friday Brings The First Flood Threat
Thursday will be partly sunny with light winds, while rain chances rise after midnight. Showers and thunderstorms are expected to become more widespread Friday, with an 80% chance of precipitation and rainfall totals generally between a half-inch and three-quarters of an inch.
The National Weather Service Phoenix has issued a Flood Watch for Friday morning through Friday afternoon covering the Phoenix Metro, rural Maricopa County and West Pinal County. Localized rainfall could reach 1 to 2 inches, and the heaviest storms may produce rapid flooding in washes, streams and low-water crossings.
Drivers should avoid crossing flooded roads or normally dry channels, even if the water looks shallow. Storms may also bring brief heavy downpours, so outdoor plans could become a soggy logistical exercise.
Halloween Weekend Stays Unsettled
Saturday will be mostly cloudy, with a few showers possible late in the day. Saturday night carries a 90% chance of rain.
The new Flood Watch and stronger rain totals mark a substantive update from Hoodline’s earlier forecast, which described the weekend threat before an advisory had been issued. Halloween activities may still be possible Saturday afternoon, but evening plans should include a rain backup.
Sunday currently looks like the wettest and coolest day, with showers and thunderstorms likely throughout the day, a 90% chance of precipitation and a high near 71 degrees. The forecast calls for roughly three-quarters of an inch to 1 inch of rain, with higher totals possible in the foothills and higher terrain north and east of Phoenix.
Sunshine Returns Monday
Rain chances drop sharply Monday, which should be sunny with a high near 74 degrees. Tuesday is also expected to be sunny and mild, offering Phoenix a clean-weather reset after a weekend that may leave washes and low spots waterlogged.
