Overview
- Phoenix is forecast to reach the upper 70s to low 80s through the weekend, with daily records likely to be tied or broken, including a projected 80 degrees on Friday against a 79-degree record from 2010.
- Flagstaff tied a daily high of 68 degrees on Dec. 11 and could notch additional records as temperatures run 10 to 20 degrees above average there.
- Valley and lower-desert highs are running about 10–15 degrees above normal, while overnight lows cool into the upper 40s to mid-50s under clear skies and light winds.
- No measurable rain is expected for at least the next week across the Desert Southwest, with the warm, dry pattern holding despite only passing high clouds.
- Long-range guidance points to a possible pattern change near Christmas that could bring cooler conditions, as humidity levels for now keep immediate fire danger low.