Highlights
- An Extreme Heat Warning remains in effect across the Phoenix Valley through 8 p.m. Sunday, Aug. 10.
- Temperatures will peak near 113 degrees Friday and Saturday, with morning lows staying in the low 90s.
- Storm chances reach 30 to 40 percent Sunday night as monsoon moisture increases and the heat dome weakens.
- Afternoon highs are expected to return closer to 106 degrees by early next week.
An Extreme Heat Warning remains in effect across the Phoenix Valley through 8 p.m. Sunday, with temperatures expected to peak near 113 degrees Friday and Saturday, Arizona's Family meteorologist April Warnecke reported Wednesday morning. The warning is corroborated by the National Weather Service Phoenix forecast office and KTAR, which noted the warning has been extended multiple times in recent days.
Wednesday's Valley high is forecast at 108 degrees, with high humidity making conditions feel hotter. Morning lows will remain in the low 90s through the weekend, keeping overnight relief minimal. A slight chance of storms exists Wednesday night, though gusty outflow winds and blowing dust are the more likely hazard this evening, according to the report.
Relief arrives after the weekend. The heat dome is forecast to weaken and shift, with monsoon moisture increasing across Arizona as a result. Storm chances climb to near 20 percent Saturday night and 30 to 40 percent Sunday night, continuing into Monday and Tuesday. Afternoon highs are expected to drop back toward 106 degrees by the start of next week.
The FOX 10 Phoenix weather forecast lists Scottsdale and Paradise Valley among the zones covered by the active warning.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- AZ Family (3TV/CBS5) retrieved 05/08/2026 12:48
- weather.gov retrieved 05/08/2026 12:48
- ktar.com retrieved 05/08/2026 12:48
- Fox 10 Phoenix retrieved 05/08/2026 12:48
Authored by The Scottsdale Signal. Drafted by AI from primary-source material under our beat-specific editorial guides; reviewed by humans before publish under our five-gate process. Sources retrieved at 05/08/2026 12:48. Every claim traces to a source.
