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Weather Phoenix, AZ

Phoenix Weather Monday: Sunny and 106°F Before Evening Storm Chances

Best Window Monday: 106°F, Sunny then Slight Chance Showers And Thunderstorms
Rain Risk Elevated
What To Wear / Bring Rain layer, water-resistant shoes, and a backup indoor plan
Useful Links Local forecast, radar, and relevant planning links
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7-Day Forecast

Mon 106°Sunny then S...
Tue 108°Sunny then C...
Wed 108°Chance Showe...
Thu 103°Slight Chanc...
Fri 97°Showers And ...
Sat 99°Slight Chanc...
Sun 102°Slight Chanc...

Phoenix is baking under sunny skies Monday, with the high climbing to near 106°F and a heat index as high as 110°F, easing into just a slight chance of showers and thunderstorms after 5 PM. Finish yard work, dog walks, or a Camelback Mountain hike before 9 AM — that’s your safest window before the pavement turns into a griddle.

Today’s Setup

The National Weather Service says weakening southeasterly flow around a strong upper-level high is pulling abundant monsoon moisture into the Valley, with precipitable water near 1.5 to 1.8 inches — enough fuel for the season’s typical afternoon storms. Expect mostly sunny skies with just a 20% chance of a stray storm developing after 5 PM, mainly drifting in from the high terrain. South wind stays light at 0-5 mph, and it won’t cool off much overnight, with lows only near 86°F.

Best Window To Be Outside

Sunrise to about 9 AM is prime time for South Mountain or Camelback Mountain trails and yard work — run a soaker hose for garden beds before dawn instead of hand-watering under the afternoon sun. By late morning the heat index climbs fast, so shift plans indoors or into shade until evening.

Heat And Storm Risk

Forecasters call this a typical monsoon pattern: storms build over the high terrain each afternoon, then push toward the Phoenix area later in the afternoon and evening. Widespread Moderate Heat Risk continues through midweek across the desert Southwest, so check on elderly neighbors and never leave kids or pets in a parked car. Monsoon storms can also knock out power, so keeping the DARAN 288Wh Power Station charged is a smart backup.

What To Wear Or Bring

Light-colored clothing, sunscreen, and a cooling neck towel make a real difference today. Keep a Stanley quencher tumbler full of ice water nearby, pack a hard cooler 52 quart for pool trips or outings, and toss in mosquito repellent spray since standing water after evening storms tends to bring bugs.

Around The Valley

The Arizona Diamondbacks host the St. Louis Cardinals at Chase Field on July 18 — the roof keeps the game comfortable regardless of the afternoon heat, though anyone tailgating first should bring a portable propane grill and plenty of water. Get tickets on SeatGeek or Find tickets on StubHub, and grab Official team gear on Fanatics before first pitch. Forrest Frank’s Jesus Generation Tour hits Mortgage Matchup Center the same night — look for a Forrest Frank t-shirt, Forrest Frank hoodie, or Forrest Frank hat. Earlier in the week, the touring Les Misérables production stops at Phoenix Theatre-AZ on July 15.

It’s a night to keep the kitchen cool rather than stand over a hot stove — a quick pasta or stir-fry fits the heat better than a heavy roast. Grab Amazon Fresh groceries and skip the hot walk through the store — you can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.

Next Few Days

Tuesday runs even hotter, with a high near 108°F and a slightly better 30% chance of storms after 5 PM. The NWS expects the same terrain-then-Valley storm pattern through midweek, with a disturbance possibly approaching from the east later this week that could bring more widespread showers and thunderstorms — and cooler air by the weekend. Track it all on the Phoenix weather forecast or browse outdoor gear deals to gear up for monsoon season.

Upcoming Home Games

Plan around the forecast — grab tickets, gear up, and see kickoff conditions.

Phoenix Mercury vs Connecticut Sun
Fri, Jul 17 · Mortgage Matchup Center
Arizona Diamondbacks vs St. Louis Cardinals
Sat, Jul 18 · Chase Field
Tucson Sugar Skulls vs Northern Arizona Wranglers
Sun, Jul 19 · Tucson Arena
IAL Double Header: Pennsylvania vs Utah & Arizona vs. Las Vegas
Sat, Jul 18 · Mullett Arena

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