A trough and storm system moving inland from the Pacific Ocean is set to alter Arizona's weather, introducing cooler air and the possibility of precipitation across the region this week.

Shifting Weather Pattern and Incoming System

The weather pattern is beginning to change today as the system tracks inland. This system is projected to pass north of Arizona, pulling milder air into the area.

Simultaneously, a fast-moving cold front will clip the state. This front is expected to elevate wind speeds and increase cloud cover across Arizona.

Rain and Storm Chances Across Arizona

A period of wet weather is anticipated as the cold front approaches the state. Showers and storms are forecast to increase over Northern, Western, and eventually Eastern Arizona.

Some of these storms could bring steadier rain, lightning, and strong, gusty winds. Into the evening, rain activity is expected to consolidate over northwestern Arizona.

Today's Forecast and Wind Advisory

The high temperature forecast for Tuesday is set at 92 degrees under mostly cloudy skies. Wind gusts are expected to reach 25–40 mph in Phoenix and 35–45 mph in Flagstaff today.

Due to these strong gusts, a wind advisory has been issued for a large portion of Northern Arizona, effective until 8 p.m. tonight.

Wednesday Outlook for the Valley

By early Wednesday morning, some isolated showers might affect the Valley and extend down toward Southern Arizona. These scattered showers are expected to move eastward quickly.

The state should dry out by late morning to midday tomorrow. The forecast high temperature in the Valley is expected to drop to the middle 80s.

The best opportunity for rain or a thunderstorm remains along the foothills situated on the north/east side of the Valley. In Phoenix, the limited window for showers is between 4 a.m. and 8 a.m., with only a 10–20% chance.

Looking Ahead to the Weekend

Breezy conditions will persist in the Valley, while the high country will remain windy through Wednesday and Thursday. Temperatures in the upper 80s are expected to last through Thursday and Friday.

Warmer conditions, with highs returning to the low 90s, are anticipated by Easter weekend.

Heat Safety Information Provided

The Scottsdale Fire Department provided the following definitions for heat emergencies:

  • Heat Cramps: Characterized by profuse sweating, fatigue, extreme thirst, and muscle cramps.
  • Heat Exhaustion: Symptoms include headache, dizziness, weakness, nausea/vomit, and cool/moist skin.
  • Heat Stroke: A severe condition involving an elevated temperature above 103 degrees, confusion, dry/hot skin, rapid shallow breathing, a rapid weak pulse, seizures, or unconsciousness.

The Arizona Department of Health Services has outlined specific precautions that can be taken to prevent heat exhaustion or heat stroke.