Phoenix is already heating up this Independence Day, with mostly clear skies and temperatures around 88°F at Phoenix Sky Harbor on Saturday, July 4, 2026. Humidity is in the mid-teens, so the air will stay dry even as the mercury climbs through the afternoon.
Today: Mostly Cloudy With A Slight Chance Of Sprinkles
Saturday will bring a high near 105°F, with mostly cloudy skies and a slight chance of afternoon rain showers or very high-based virga that might only squeeze out a few sprinkles in spots. Winds will stay light, so if you are planning to be outside, early morning or after sunset will be your best bet for slightly more comfortable conditions.
Extreme Heat Watch Tuesday Through Thursday
The National Weather Service has issued an Extreme Heat Watch for the lower deserts from Tuesday morning through Thursday evening, Tuesday, July 7 through Thursday, July 9, 2026, warning of dangerously hot conditions with afternoon temperatures expected between 111°F and 116°F. National Weather Service Phoenix notes this will likely be the hottest stretch so far this summer and could bring major heat-related health risks.
Find Cooling Centers And Take Precautions
If you have to be outside during the hottest hours, take it seriously: reschedule strenuous work to mornings or evenings, drink plenty of water, wear light clothing, and check on older neighbors and anyone with medical vulnerabilities. Maricopa County operates a Heat Relief Network with cooling centers, hydration stations and transportation assistance. Call 2-1-1 or check county resources online for locations and hours. Maricopa County Heat Relief
Outlook And Local Impacts
Highs should top 110°F through midweek, with overnight lows stuck in the mid-to-upper 80s, which will offer only limited overnight relief for many neighborhoods. Very dry afternoons combined with occasional gusts later in the week mean fire danger and heat-related illnesses remain the main local concerns, so plan outdoor events and work with those risks in mind.
