- Temperatures will increase through the week, reaching 105-110° for many lower elevation areas by Thursday.
- An Excessive Heat Warning is valid from Thursday 10 AM MST – Friday 8 PM MST for areas below 4000′ in the Grand Canyon, Marble/Glen Canyons, and the valleys of Yavapai County.
- A slight chance of showers/thunderstorms will be possible starting Thursday through the weekend, primarily across the Mogollon Rim and White Mountains.
- Storms later this week are likely to be high-based, with gusty winds and little rain – posing a threat of lightning caused fire starts.
