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Last Map Update: Sun, Sep 27, 2026 at 2:54:58 pm MST

Watches, Warnings & Advisories

National Weather Service NWS Flagstaff, AZ

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National Weather Service Albuquerque, NM

National Weather Service NWS Tucson Arizona

Coastal Flood Advisory

Beach Hazards Statement

Flood Watch

Hydrologic Outlook

Timing of Rain Chances

Excessive Rainfall Outlook

Rainfall Probabilities

Temperature Outlook

Tropical moisture will filter into the region through Monday. A Pacific low pressure system will help tap into this tropical moisture and lead to widespread chances for showers and thunderstorms, especially by Monday night across South-Central AZ, expected to linger into Tuesday morning.

The Weather Prediction Center has issued a Moderate risk (3/4) for excessive rainfall across much of the eastern portions of AZ on Monday and Tuesday, while a Slight Risk remains for most areas of SC AZ. Periods of heavy rainfall could lead to flash flooding of low water crossing and washes.

Rainfall will be most widespread across the region from Monday through Tuesday night. Probabilities of receiving at least 0.50" is high for much of AZ with even a modest probability (>50%) for totals exceeding an inch across portions of southcentral AZ. Higher totals greater than 2.00" will also be possible, mainly over the foothills and higher terrain.

Abundant moisture and cloud cover will lead to much cooler temperatures during the first half of the coming work week, especially across South-Central AZ. As the Pacific low pressure system departs, expect gradually warming temperatures beginning Wednesday and through the end of the work week.