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Last Map Update: Thu, Oct 8, 2026 at 4:02:33 am 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

Extreme Heat Warning

Coastal Flood Advisory

Beach Hazards Statement

Extreme Heat Warning

Temperature Outlook

Cool, Wet, and Windy Weather Ahead

Last 100 Degree Day Stats

Extreme Heat Warnings are in effect for portions of SW AZ and SE CA through Friday. The Yuma area and most of western Imperial County, including the Imperial Valley, will be under the warning through 8 pm MST/PDT Friday. The Lower Colorado River Valley and eastern Riverside County will be in the warning from 10am MST/PDT through 8pm MST/PDT today. Afternoon highs are expected to peak upwards of 104°-110°F, around 10-15 degrees above normal for this time of year.

Well above normal temperatures will continue through Friday resulting in areas of moderate to locally major HeatRisk across the lower deserts. Afternoon highs will be around 10 degrees above normal and near daily records across the western deserts. Temperatures will then rapidly fall to well below normal by the beginning of next week.

An unsettled weather pattern will develop this weekend and continue into next week. Multiple rounds of rain will be possible as an area of low pressure amplifies over the west coast, the remnants of Tropical Cyclone Rachel move through the region, and the low over the west coast eventually moving through the region during the beginning of next week. This will also lead to temperatures quickly falling well below normal by the beginning of next week. Additionally, breezy to windy conditions are expected as the remnants of Tropical Cyclone Rachel move through the region this weekend. Please stay tuned for forecast updates as details become more clear!

October 5th is the average last 100 degree day of the year for Phoenix. The latest 100 degree day on record occurred on Oct 27th, 2016, so it is climatologically possible to see 100 degree days last through late October.