Arizona weather forecast: Hot last day of July in Phoenix
Evening Weather Forecast - 7/31/25
It's a hot end to July, but we might see some storms in the Valley!
PHOENIX - Thursday has been sunny and hot in the Valley, but the High Country has been experiencing showers and thunderstorms.
Today:
We will see a chance for isolated showers and storms in the Valley this evening.
Dust storms or blowing dust will be possible as well. The chances of rain will be very hit-or-miss, but if a storm does hit, it could bring strong wind gusts and heavy rain.
The overnight will be dry for most of the state, except a few lingering showers in far northeast Arizona. Temperatures will fall into the upper 80s in the Valley with clear skies.
This Weekend:
Friday is going to be an even hotter day for the Valley, with highs around 112 degrees, and hotter again on Saturday and Sunday.
Extreme heat warnings will be in effect from 10 a.m. Friday through 8 p.m. Saturday for the southern deserts, including the Valley and the Superstition Mountains.
The Valley and western Arizona will be dry on Friday, but isolated showers and thunderstorms will develop over the mountains from the Grand Canyon, to Flagstaff, the Mogollon Rim, the White Mountains and the Superstition Mountains.
Storms will move eastward toward New Mexico.
The weekend is going to be dry across the state.
Next Week:
Overnight lows will remain between 86 and 90 degrees into next week, making for an overall hot spell ahead.
Morning Weather Forecast - 7/31/25
Extreme heat is returning to the Valley's forecast, and it's going to be a hot last day of July with a high near 110?F.
You can always check the latest weather conditions by visiting the FOX 10 Phoenix weather page, or download the Free FOX 10 Weather app, which is available on Apple iOS and Android.
Scroll down this page for satellite and radar, day planner, records, current temperatures, 10-day forecast, forecast highs, and recent rainfall totals, plus live video feeds.
The following heat safety information was provided by the Scottsdale Fire Department.
What are Heat Emergencies?
Heat Cramps: Profuse sweating, fatigue, extreme thirst, muscle cramps
Heat Exhaustion: Headache, dizziness, weakness, nausea/vomit, Cool/moist skin
Heat Stroke: Elevated temp. +103degrees, confusion/irrational behavior, dry/hot skin, rapid shallow breathing, rapid weak pulse (shock), seizures, unconscious
What to do
- Get person into shade or cool location
- Cool person with cool, wet cloths (neck, groin, armpits, head) and fan body
- Sip cool water if person is alert
- For muscle cramps, massage muscles gently, but firmly until relaxed
- *If symptoms worsen, call 911
What not to do
- Do not give anything by mouth if person is vomiting, unable to swallow or unconscious
- Do not underestimate the seriousness of a heat emergency
- Prevention/Preparation for hike/exercise in heat
Know your limitations
- Hydrate (begins day prior to hike/exercise, hour before hike, during and after)
- Wear proper clothing, lightweight and light color, protect head, proper shoes
- Always carry a cell phone and best to hike with company
- Always tell someone where you are hiking and when to plan to return
Preventing heat exhaustion/heat stroke
The Arizona Department of Health Services stated the following precautions can be taken to prevent heat exhaustion or heat stroke:
- Stay in air-conditioned buildings
- Find a cooling center/hydration station
- Limit outdoor activity during the hottest part of the day (mid-day)
- Check on at-risk friends, family, and neighbors at least twice a day
- Drink water before, during, and after working or exercising outside
- Check the UV Index
- Check the heat risk map
Road Conditions
- Call 511 anywhere in Arizona or 1-888-411-ROAD (7623)
- az511.com