National Weather Service United States Department of Commerce
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Last Map Update: Sat, Aug 15, 2026 at 1:44:50 am MST

Dry and tranquil weather along with near seasonal temperatures will prevail this weekend with the forecast area expected to remain storm-free. Areas of Major HeatRisk develop next week as temperatures heat up. In addition, storm chances through the majority of next week will be limited to the AZ high terrain and southeast AZ, with the lower deserts expected to remain dry.
Temperatures gradually heat up through the weekend and into the start of next week. Areas of Major HeatRisk return by Monday and forecast to last through the entire work week.
Early next week, the subtropical high pressure will migrate from the Southeast US back to the Desert Southwest and will build over the region. This will result in hotter temperatures with little overnight relief. An Extreme Heat Watch has been issued for the south-central AZ lower deserts starting Monday and expanded to include the western deserts starting Tuesday. The Watch will be in effect Monday through Friday next week.

 

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