Arizona weather forecast: Extreme heat in this weekend's forecast
5 p.m. Weather Forecast - 6/28/25
It's going to be a very hot weekend in Phoenix as extreme heat is in the forecast!
PHOENIX - It’s been a warm start to the weekend with the real warm-up happening Sunday through Tuesday under a strong ridge of high pressure.
What To Expect:
Saturday brought us a daytime high of around 109 degrees, which is about two degrees above our seasonal average. Tonight we can expect an overnight low of around 85 degrees.
Our Extreme Heat Warning begins Sunday with temperature readings still on track to exceed over 110 degrees. Monday will remain as the hottest day with a high of around 115 degrees with the threat of a major heat risk.
Dig deeper:
An Ozone High Pollution Advisory continues for Maricopa County which will expire on Sunday. This could cause breathing difficulties for children, older adults and those with respiratory issues.
What's next:
Moisture will begin on Tuesday along the higher terrains of the state, with a chance of isolated showers and thunderstorms across portions of eastern Arizona. There could be a chance that some storms could move into the lower deserts of south-central Arizona.
The greatest chances for the lower deserts will be later in the week, with Thursday and Friday bringing in the potential for showers, thunderstorms and cooler temperatures.
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.
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
Driving in extreme temperatures
The Arizona Department of Transportation’s tips for driving in extreme temperatures include:
Have sun protection: In addition to an umbrella, take sunscreen and a wide-brimmed hat and wear loose-fitting, light-colored cotton clothing.
Fuel up: Keep your tank at three-quarters full. Running out of gas, especially in a remote location, is dangerous in extreme heat.
Hydrate: Take a cooler to keep extra drinking water cold, and consider adding several frozen bottles of water to use for cooling off or to thaw and drink if needed. Make sure everyone, including pets, stays hydrated.
Get help: If your vehicle breaks down in extreme heat, call for assistance right away to reduce wait time, and run the AC. If the AC isn’t working, roll down all windows.
Wait safely: If the temperature inside your vehicle becomes too hot, everyone, including pets, should exit carefully and seek out or create a shaded area as far away from the travel lanes as possible. Be careful walking on the road surface, which can be hot enough to burn skin. Keep your shoes on and try to keep your pets’ paws off the pavement. If you are stopped along the highway, raise the front hood and turn on hazard lights. Please keep in mind that parking in tall brush can start a fire.
Check your vehicle: You can help avoid breakdowns and blowouts by making sure your vehicle is in good operating condition. Check your air conditioner and coolant levels, top off any vital engine fluids and make sure your battery is up to par. Check your tire pressure, as the combination of under inflated tires and hot pavement can lead to a blowout.
MORE: https://azdot.gov/about/transportation-safety/severe-weather