Phoenix rolled into Wednesday, July 1, 2026, under clear skies and a relatively kind 75°F at daybreak, but the reprieve will not last long. Forecasters expect temperatures to jump into the low 100s this afternoon. The air stays very dry and overnight lows only slip into the mid-70s, which means not much of a cooldown after dark. If you have to be outside, aim for early morning or after sunset and keep the water bottle close.
What To Expect This Week
Highs are on a steady climb: around 101°F on Wednesday, about 102°F on Thursday, and roughly 105°F on Friday, July 3. The heat tightens its grip over the holiday weekend, with Independence Day on Saturday, July 4, expected to hit near 106°F and Sunday, July 5, likely topping out around 108°F. The biggest jump shows up early next week as a ridge builds overhead, with forecast highs near 110°F on Monday, July 6, and close to 111°F on Tuesday, July 7.
Heat, Humidity And Fire Risk
Moisture will be scarce. Afternoon humidity should bottom out mostly between 5–10% through Saturday, with overnight recovery only around 15–30%. That kind of dryness leaves brush and grasses ready to burn. Afternoon breezes may gust 20–25 mph today and generally 15–20 mph later in the week, so elevated fire danger sticks around across higher terrain for at least another couple of days. Put dry air, gusty afternoons and rising temperatures together, and you get a setup that calls for extra care with open flames and fireworks near desert parks.
Independence Day And Cooling Options
With highs near 106°F on Saturday, July 4, both daytime celebrations and evening fireworks will be hot in every sense of the word. Bring shade if you can, plan for frequent water breaks, and do not underestimate how quickly the heat can sneak up on you. The city operates a Heat Relief Network of cooling centers and hydration stations, with an interactive list and safety tips on the City of Phoenix Heat Safety page. If you need help getting to a cooling site, call 2-1-1 for assistance and transport options.
Local Context
Hoodline first flagged the season's early triple-digit swings on June 6, and this week’s warm-up continues that pattern and appears ready to intensify into next week, as outlined in triple-digit heat and blustery winds. Updates will follow if the National Weather Service issues heat watches or excessive heat warnings for the Valley.
Bottom line: expect very hot afternoons and warmer nights through next week. Drink plenty of fluids, steer clear of strenuous activity during the midday peak when you can, and keep an eye on official alerts if you have outdoor plans over the holiday weekend.
