According to the Arizona Weatherman, expect the heat to turn up for Southern Arizona on Thursday and Friday, 11-12 Dec 2025, to near-record-breaking levels. A longwave ridge moving over the state will bring this heat streak.
For Phoenix, expect high temperatures around 80°F and 81°F on Thursday and Friday; for Tucson, expect 81°F and 80°F; and for Yuma, expect 83°F and 84°F. The best chances to beat the record, especially for Phoenix and Tucson, will be on Friday, 12 Dec 2025.…