Fresno, CA – A widespread Heat Advisory has been issued for Central California, with dangerously hot conditions expected to impact millions across the San Joaquin Valley starting Monday.
According to the National Weather Service in Hanford and Sacramento, the advisory takes effect at 11 a.m. Monday and continues through 8 p.m. Tuesday, bringing high temperatures up to 102 degrees in many valley locations, including Fresno, Bakersfield, Merced, and Visalia.
Forecasters say widespread Moderate HeatRisk is expected, with pockets of Major HeatRisk developing in urban areas like Fresno and in foothill regions where overnight cooling will be limited. Cities including Clovis, Hanford, Madera, Delano, and Porterville are also expected to see triple-digit heat.
Further north, areas like Modesto, Chico, and Oroville could see highs between 95 and 100 degrees, with slightly cooler overnight lows due to Delta influence, though heat-related impacts remain a concern.
The heat wave is expected to increase the risk of heat-related illnesses, especially for vulnerable populations, outdoor workers, and those without access to air conditioning.
Residents are urged to stay hydrated, remain indoors in cooled environments, and avoid strenuous outdoor activity during peak afternoon hours. Officials also recommend checking on elderly neighbors and relatives.
Workplace safety guidance calls for frequent breaks in shaded or air-conditioned areas. Anyone showing signs of heat exhaustion should be moved to a cool place immediately, while heat stroke requires emergency medical attention.
This early-season heat event marks one of the first significant temperature spikes of the year across Central California, raising concerns about prolonged exposure as summer approaches.
