Rising heat grips Phoenix and surrounding Valley
PHOENIX, Arizona — A powerful ridge of high pressure is intensifying over the Southwest, ushering in the hottest stretch of weather so far this year. As of today, Saturday, June 7, residents across the Phoenix metro area should brace for a dangerous climb in temperatures, well above seasonal norms.
This afternoon, the Valley of the Sun is projected to reach 103°F (39.4°C) — just a degree above the average high of 102°F (38.9°C) for early June. But the heat dome building over the region will push thermometers sharply higher over the weekend and into the new week.
Temperatures surge toward triple digits
Saturday’s forecast calls for a high of 106°F (41.1°C), and by Sunday, the mercury could spike to 108°F (42.2°C). These values mark a significant departure from climatological averages and bring an elevated heat risk to vulnerable populations, especially those spending extended time outdoors or without access to cooling.
The last time Phoenix reached 108°F was on October 8 of the previous year. This incoming heatwave could push us even further.
Potential first 110°F day of 2025 on the horizon
Looking ahead to Monday, temperatures are forecast to hit 109°F (42.8°C). However, models hint at the possibility of reaching or surpassing 110°F (43.3°C) — a milestone temperature that has not been recorded since October 7 of last year.
By Tuesday and Wednesday, the extreme heat will persist, with daytime highs expected to hover between 105°F and 108°F (40.6°C to 42.2°C). While there may be a minor cooldown later in the week, residents should expect continued oppressive conditions through at least midweek.
Moderate heat risk expands across the region
With this intense heat ramping up, the National Weather Service and local forecasters are flagging a moderate risk for heat-related illness, particularly in urban zones and areas with limited shade. Although no official heat alerts have been issued as of this morning, the potential for Heat Advisories or Excessive Heat Watches looms if Monday’s readings hit that 110°F benchmark.
Arizona’s desert communities, including Mesa, Scottsdale, Tempe, and parts of Maricopa County, should prepare for difficult-to-escape heat over the next several days.
Stay aware of localized temperature variations, particularly in downtown corridors, parking lots, and road surfaces, where heat retention can make conditions feel even hotter than forecasted.
