Wednesday, March 4, 2026, Phoenix starts the midweek stretch warm, dry and mostly sunny, with an afternoon high near 84°F and low relative humidity through the day. Once the sun drops, temperatures follow quickly, sliding to around 55°F overnight, so mornings and evenings will feel noticeably cooler than the midday warmth suggests.
Thursday: Breezy To Windy
A dry weather system will sweep across the region on Thursday, March 5, turning things breezy to downright windy at times, especially in exposed desert corridors and across nearby mountain passes. Wind Advisories are posted for parts of eastern Riverside County and northern Imperial County in California, with gusts of 30 to 40 mph possible in those advisory zones. Around Phoenix, neighborhoods could see gusts of roughly 25 to 35 mph at times.
The same system will shove even drier air southward, pushing afternoon dew points into the teens and creating elevated fire-weather concerns in some western districts, according to the National Weather Service in Phoenix.
Afternoon And Tonight
This afternoon stays mostly sunny with light south-southeast breezes, as temperatures climb through the 70s into the mid 80s by late day. With humidity staying low, outdoor plans will feel more comfortable in the cooler morning or evening hours than under the early afternoon sun.
Tonight remains mostly clear, with a low near 55°F and light southwest winds, so expect another cool start on Thursday before the winds pick up.
Weekend Into Next Week
Highs hold in the low to mid 80s through the weekend, with Sunday, March 8, shaping up as the warmest day before a slower-moving low approaches the region. That system may bring a slight chance of showers from Sunday night into Monday, March 8 to 9, with the best odds over higher terrain east of Phoenix and only light totals anticipated. Keep an eye on forecast updates for any changes in timing or coverage.
For a look back at how this warm stretch set up, revisit how the Valley sizzles as Phoenix nears 91.
Impacts And Tips
With low afternoon humidity and gusty winds in the mix on Thursday, avoid open burning, secure loose outdoor items so they do not end up in the neighbor's yard, and give extra space on the roads for bicyclists and high-profile vehicles that can get pushed around by sudden gusts.
Stay hydrated if you are outside during the warmest part of the day, and try to schedule strenuous outdoor work for the morning or evening hours until winds ease later Thursday or into Friday.
