Phoenix is in for a hot, muggy Thursday with a high near 102°F easing to around 98°F by afternoon, and a 40% chance of showers and thunderstorms developing through the evening, according to the National Weather Service. If you’ve got a hike at Camelback Mountain, yard work, or errands on the list, knock them out before midday — storm chances ramp up fast once the sun gets to work on all that monsoon moisture.
Today’s Setup
Early-morning storm activity stayed mostly isolated to Yuma and southern Maricopa County, with a remnant mesoscale convective vortex sliding south through Gila County that nudged a few light showers as far south as north Phoenix before sunrise. The bigger story is this afternoon: with total column moisture (PWATs) running 1.75 to 2.00 inches and boundary-layer mixing ratios near 12-13 g/kg, the National Weather Service describes the atmosphere as sitting in a “sweet spot” for robust monsoon thunderstorms as peak heating sets in.
Best Window To Be Outside
Mornings are your friend all week. Get outside early — before 11 or so — for anything at South Mountain Park, then plan to be indoors or under cover by mid-afternoon as storms fire. Overnight isn’t offering much relief either, with lows holding near 86°F and climbing toward 89°F before dawn.
Rain & Flash Flood Risk
Thursday night is the bigger concern: precipitation chances jump to 70%, with a quarter to half an inch of rain possible as storms become more widespread across central and eastern Arizona and last into early Friday morning. The Weather Prediction Center is watching heavy rain risk elsewhere in the country, but locally, NWS Phoenix is flagging potential for heavy rainfall and localized flash flooding tonight — avoid driving through washes or flooded streets after dark. A DARAN 288Wh Power Station is smart to have charged up in case monsoon storms knock out power for a stretch.
Games & Events This Week
Daniel Caesar plays the Mortgage Matchup Center tonight — if you’re heading out as storms build, grab Get tickets on SeatGeek and pick up a Daniel Caesar hoodie for the walk to the car. Forrest Frank brings The Jesus Generation Tour to the same venue Friday, July 18; read our concert preview and Find tickets on StubHub. The Arizona Diamondbacks host the St. Louis Cardinals at Chase Field July 18-19, with Friday’s cooler high near 92°F making for a far more comfortable ballpark trip — grab an Arizona Diamondbacks jersey or Arizona Diamondbacks fitted cap before first pitch.
Tonight’s Dinner
With storms rolling through, this is a stay-in kind of night. A slow cooker chili or a pot of beef stew fits the mood — a programmable slow cooker or enameled cast iron Dutch oven does the work while you watch the radar. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Friday still carries a strong 73% storm chance overnight into early morning with a high near 92°F, but the National Weather Service expects monsoon activity to ease starting Saturday, with storms shifting toward Arizona’s high terrain and temperatures dropping to below normal for the weekend — welcome news for the Diamondbacks series and anyone catching up on outdoor plans.
