Synopsis: Our well-advertised cool down has finally arrived this morning bringing our first taste of fall across the lower deserts. Looking at the big picture, a strong Pacific disturbance and attendant cold front will continue to dig southeast across AZ today before exiting the state to the east on Tuesday. Windy conditions will continue throughout the day and temperatures will struggle to climb much higher as a colder air mass settles across the region. Unfortunately, rain chances never really materialized for southcentral AZ with most of the activity focused across the higher terrain to the north and east. Moving ahead, below average temperatures will persist the next few days before another warm up later this week.
For today plan on partly sunny skies mixed with periods of mid and high clouds. Afternoon temperatures won’t warm up much with values in the 66˚F-69˚F range around the Valley. West/northwest winds will hover in the 8-16mph range with frequent gusts in to 25-30mph. Any lingering showers will remain confined to the higher terrain areas north and east of the Valley. A very chilly air mass will settle over the region overnight into Tuesday morning with lows forecast to dip into the upper to mid 40s around the urban corridor.
For tomorrow plan on a chilly start to the day despite a return to mainly sunny skies across the region. Daytime highs will remain limited to the 66˚F-69˚F range around the Valley. Gusty morning north/northwest winds (10-20mph) will ease back into the 5-10mph range by tomorrow afternoon/evening. Moving ahead, high pressure will slowly build back east across the region after mid-week lending to steady warming trend and quiet weather conditions. Afternoon highs will rebound back into the mid 70s on Wednesday before likely reaching the low 80s on Thursday under mainly sunny skies.