Arizona weather forecast: Monsoon storms are back in the Phoenix area

Monsoon returns to the Phoenix area for 2nd night

FOX 10's Erica Horvatin has the latest on Thursday night's storm, and what we can expect overnight and into Friday. We're seeing lots of rain and lightning for a second night.

PHOENIX - It has been a dry and mostly partly sunny day across the Valley, but widespread showers and thunderstorms are moving northward across the High Country, and some storms are causing flooding in southern Arizona.

Evening Weather Forecast - 8/14/25

FOX 10's Erica Horvatin has the latest as storms are expected to arrive back in the Valley.

Today:

Rain arrived in the Valley on Thursday evening.

"A few storms have now developed over portions of the Phoenix metro. Expect some gusty winds and brief heavy downpours …," the National Weather Service said at 8:23 p.m.

Cloud to ground lightning, heavy rain, minor flooding, gusty winds and blowing dust are all possible with storms.

Looking Further Ahead:

Overnight lows will fall into the mid-80s by Friday morning, and the rain will clear the Valley, moving through eastern AZ and the Four Corners before drying out midday.

Friday will be a dry and slightly cooler, but humid, day. Temperatures will only climb to around 105, which is normal for this time in August.

Isolated showers and thunderstorms will redevelop in the Valley and in the High Country, near Flagstaff and the Kaibab Plateau, Friday evening. These storms will bring the same threats.

We will see drier skies across Arizona, and near-normal temperatures, throughout the weekend.

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

Rain/flood safety tips

The American Red Cross' tips for heavy rain situations and flood safety:

Turn around don’t drown! If you must drive and you encounter a flooded roadway, turn around and go another way.
If you are caught on a flooded road and waters are rising rapidly around you, get out of the car quickly and move to higher ground.
Tune in to your local radio, NOAA radio, or news channels for the latest updates.
If your neighborhood is prone to flooding, be prepared to evacuate quickly.
Follow evacuation orders and do not attempt to return until officials say it is safe.
If power lines are down, do not step in puddles or standing water.
If power is out, use a flashlight. Do not use any open flame as alternate lighting.

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.