Arizona weather forecast: Anyone else notice a bit of a cool down in Phoenix? (2024)

Sunday in Phoenix is noticeably cooler than Saturday!

"There's been a notable change in temperatures today, compared to yesterday. The 24-hour temperature change as of 1:40 MST is in the 5-15 °F cooler range. The "coolest" areas are where clouds have prevailed the longest. Phoenix did not reach 100°F until close to 1 PM," the National Weather Service in Phoenix said on X.

The low on Sunday was 88. The high was 105.

In Flagstaff, thunderstorms are expected Sunday, as well as possible flooding.

"Storms will continue to develop this afternoon across N. AZ, most numerous north of I-40 where there is an enhanced risk of flash flooding," NWS in Flagstaff said at 12:25 p.m. on X.

Low temperatures this morning were mostly in the 80s across the lower deserts. There are also some breezy southerly winds this morning, most notable in Southwest AZ and Southeast CA where gusts have reached up to 25-35 mph. #azwx #cawx pic.twitter.com/6fxF7rqey6

— NWS Phoenix (@NWSPhoenix) August 11, 2024

There's been a notable change in temperatures today, compared to yesterday. The 24-hour temperature change as of 1:40 MST is in the 5-15 °F cooler range. The "coolest" areas are where clouds have prevailed the longest. Phoenix did not reach 100°F until close to 1 PM. #azwx #cawx pic.twitter.com/TiPunOdczP

— NWS Phoenix (@NWSPhoenix) August 11, 2024

Radar Update 12:15 PM MST: Storms will continue to develop this afternoon across N. AZ, most numerous north of I-40 where there is an enhanced risk of flash flooding. #azwx pic.twitter.com/HyHKg5MDyI

— NWS Flagstaff (@NWSFlagstaff) August 11, 2024

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. +103 degrees, 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

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.

Preparing for a severe thunderstorm

The American Red Cross' tips for preparing for a severe thunderstorm:

  • Put together an emergency kit.

  • Know your community’s evacuation plan.

  • Create a household disaster plan and practice it.

  • Purchase a battery-powered or hand-crank radio

  • Discuss thunderstorm safety with members of your household. Be aware that a thunderstorm could produce flooding.

  • Pick a safe place in your home for household members to gather during a thunderstorm. This should be a place where there are no windows, skylights, or glass doors, which could be broken by strong winds or hail and cause damage or injury.

Be prepared and stay safe during the monsoon

"Most Valley residents know how quickly and furiously storms can move in and out, bringing strong winds, dust, rain, and flash flooding. These storms can cause interruptions in services, such as water, power, and gas," stated Captain Ashley Losch of the Glendale Fire Department.

GFD reminds residents of ways they can be prepared and stay safe:

  • Have flashlights with extra batteries on hand.

  • Have food that can be prepared without the need for cooking or refrigeration.

  • Have at least one gallon of clean water for each person in the household.

  • Have backup power for anyone requiring power for a medical device.

  • Have backup power for cell phones that do not require charging.

  • Have a first aid kit ready and accessible.

  • Never drive into areas with flowing water; it takes less than 10 inches to wash a car away.

  • Avoid flooded areas, such as washes.

  • If waters are rising, seek higher ground.

  • Do not approach downed power lines, the ground can be energized for up to 200 feet.

  • Keep pets indoors during storms.

MORE: https://azdot.gov/about/transportation-safety/severe-weather

Arizona weather forecast: Anyone else notice a bit of a cool down in Phoenix? (2024)

FAQs

What month does it start to cool down in Arizona? ›

On brand with the nickname "Valley of the Sun," Arizona weather starts getting warm as soon as late May and grips on, not dipping into 90 degrees or lower until well into September or October. The National Weather Service forecasts the average date Phoenix drops below 100 degrees is Sept. 29, Frieders said.

Where is cool weather in Arizona? ›

Head to Greer in the White Mountains to beat the heat by escaping from the valley. Located over 8,500 feet above sea level, Greer is much cooler than the surrounding deserts, you can travel up to the 9,500 foot level to explore Big Lake, where you can camp, fish and swim above the deserts.

What is the longest number of days in which the temperatures in Phoenix Arizona were over 100 F? ›

Extreme Temperature Facts for Phoenix,Yuma, and El Centro
Phoenix Period of Record (POR) (1896-2023)
Fewest number of 100° F or greater days48 (1913)
Greatest number of 100° F or greater days145 (2020)
Longest stretch of 100° F or greater days76 (10 Jun 1993 - 24 Aug 1993)
21 more rows

How to survive summer in Phoenix? ›

Keep reading to learn five tips on how to survive an Arizona summer.
  1. Stay Hydrated. In the summer months, water is your best friend. ...
  2. Wear Sunblock. The Arizona sun is no joke. ...
  3. Check the Weather. ...
  4. Be Aware of Your Surroundings. ...
  5. Stick to the Shade.

Will Arizona have a hot summer in 2024? ›

Phoenix heat experts expect 2024 to break the record for hottest summer in history. PHOENIX - This week Phoenix broke another heat record. The metro area reached 118 degrees on Monday, and according to the National Weather Service, that was the first time in the city's history it ever got that hot on July 8th.

What are the 3 hottest months in Arizona? ›

The mean average temperature between 1991 and 2020 for July is 95.5 degrees in Phoenix. August was typically the second hottest month with a mean average temperature of 94.4 degrees. June followed, with a mean average temperature of 91.4 degrees.

What is the coolest place to live in Arizona? ›

Tucson tops our list as the best place to live in Arizona. Home to gorgeous weather, a world-renowned cycling race, and surrounded by four mountain ranges providing endless vistas and hiking trails, Tucson is truly an outdoor haven.

What town in Arizona has the best weather year round? ›

Phoenix, Arizona, is the best US city to live in for warm weather and a low cost of living. It has 300 sunny days per year and a warm climate all year round. The cost of living in Phoenix is low compared to other major cities.

What is the hottest town in Arizona? ›

Arizona isn't nearly as hot as Death Valley, though we have come close on several occasions. Lake Havasu City hit 128 degrees on June 29, 1994, making it the hottest temperature ever recorded in the state, according to the National Weather Service. This is just 6 degrees cooler than the record high in Death Valley.

What is the coldest Phoenix Arizona has ever gotten? ›

The all-time lowest recorded temperature in Phoenix was 16 °F (−9 °C) on January 7, 1913, while the coldest daily high temperature ever recorded was 36 °F (2 °C) on December 10, 1898. The longest continuous stretch without a day of frost in Phoenix was nearly eight years, from December 27, 1990, to December 23, 1998.

How many days has Phoenix been over 100 degrees in 2024? ›

In 2024, Phoenix shattered over a dozen all-time heat records. Here's what they are. Phoenix's heat continues to break records. As of Thursday, the city has endured an 81-day streak of temperatures reaching 100 degrees or higher, surpassing the previous record of 76 days set in August 1993.

What is the hottest it has ever been in Phoenix, Arizona? ›

The altitude in Phoenix ranges from approximately 1100ft at the airport where the official temperature is recorded, to over 2500ft at the northern boundaries of the city. The highest temp ever recorded was in June 1990, 122 degrees.

How can I keep my house cool in Phoenix? ›

Pay Attention To Your Doors & Windows

If you have any leaks, caulk and weather stripping may do the trick. You can even stop some sunlight heat from entering your home by using things like window screens, window films, or solar screens. Also, closing your blinds or curtains will have a similar effect.

How hot will Phoenix be in 2050? ›

By 2050, people in Phoenix are projected to experience an average of about 47 days per year over 110.0ºF.

Is Phoenix dry or humid? ›

Due to the lack of natural humidity in Phoenix, the dry air pulls moisture from any place it can – including your body. While it may be nice to not sweat profusely, dehydration can sneak up on you quickly.

What month is the coolest in Arizona? ›

Phoenix Weather Highlights

December is the coolest month with highs around 66 and lows in the mid-40s.

What are the worst months in Arizona? ›

September and October are the absolute worst two months in Phoenix. Here's why... We all know that June, July and August are hot here. Yes there's monsoon season and yes we had a pretty good one this year.

Which feels hotter, Florida or Arizona? ›

In Orlando, Florida, 98 degrees with 78% humidity will make you feel like you just stepped into a hot shower, but 112 degrees in Phoenix, Arizona, with 16% humidity will feel extremely hot. However, the way your body responds to the heat with less moisture in the air is a little different.

Is Arizona getting too hot? ›

(KVOA) — The climate has been in a warming trend for more than 200 years and eventually some places may become unlivable to humans. Arizona is already one of the hottest places on Earth and it is continuing to warm with most of the rest of the planet.

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