NWS Phoenix

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Last Map Update: Sat, Mar 14, 2026 at 8:10:31 pm MST

Watches, Warnings & Advisories

National Weather Service NWS Flagstaff, AZ

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National Weather Service NWS Tucson Arizona

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Record Breaking Temperatures

First 100 Degree Day Stats

CPC 8-14 Day Temp Outlook

Strong high pressure will persist across the region reaching record strength by the middle of next week. Temperatures across the lower deserts will increase into the triple digits heading into the latter half of next week. Not only will all-time March temperatures be broken (and likely April as well), but also the earliest occurrence of 100 degrees in the Phoenix area.

High pressure will strengthen into record territory by the middle of next week, pushing lower desert highs above 100 degrees by Wednesday, then likely above 105 degrees Thursday and Friday. Daily records will likely be broken by nearly 10 degrees from Wednesday through next weekend. Excessive Heat Watches are in effect during the latter half of next week.

Phoenix and neighboring lower desert communities will almost certainly reach 100 degrees by the middle of next week. This would be the earliest occurrence of 100 degrees on record for the Phoenix area.

The Climate Prediction Center's 8-14 day temperature outlook shows a high likelihood (80-90% chance) of above normal temperatures continuing for our area through the end of March.