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Evening weather forecast - 8/1/25
Possible record-breaking temperatures are on the way.
PHOENIX - Extreme heat begins in the Valley with dangerously hot temperatures for the weekend.
Extreme heat watches and warnings are in place across southern Arizona and lower elevations of the Grand Canyon through the weekend for temperatures over 110 degrees.
What's ahead:
Overnight lows will be near 90s for some areas. Showers in eastern Arizona will continue with a drier weekend ahead for much of the state.
Extreme heat will continue next week as temperatures will be over 110 degrees each day. Record-breaking and above-average temperatures will be possible next week with readings as high as 116 on Wednesday and 117 on Thursday.
The extreme heat warning will last through Saturday in Maricopa and Pinal counties, through Sunday for southern Arizona, and through next Tuesday for the Grand Canyon (below 4,000 feet).
These dangerously hot temperatures will put the Valley in a major heat risk for the first week of August.
We will continue to be dry and hot with the chance of showers for eastern Arizona next week. Make sure to stay hydrated, drink plenty of water and stay inside with AC if possible during this extreme heat wave.
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
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.
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