San Jose is starting Monday clear and around 66 degrees, but the Santa Clara Valley is headed for another afternoon in the mid-90s. A Heat Advisory remains in effect through 10 p.m. Wednesday as hot days and mild nights limit relief.
Afternoon Heat Peaks Near 95
The latest forecast from the National Weather Service calls for a sunny high near 94 on Monday, followed by 95 on Tuesday and 94 on Wednesday. Northwest winds should stay light, generally below 10 mph, though they may pick up during the afternoon.
The updated outlook extends the heat story covered in Sunday’s forecast, with the advisory now carrying through Wednesday night. No meaningful rain is expected, and skies should remain sunny or clear across the inland valley.
Warm Nights Offer Little Relief
Monday night should be clear with a low around 66 degrees, while Tuesday night stays near 67. Even Wednesday night will only cool to about 64, making air conditioning, shade and hydration especially important for people without reliable cooling.
Coastal areas may see morning fog and cooler temperatures, but that marine layer is expected to have limited reach into San Jose. Inland residents should plan for the hottest conditions from early afternoon through late afternoon, when temperatures climb into the 90s.
Cooler Weather Arrives Late This Week
The heat begins easing Thursday, although the forecast still calls for a sunny high near 92. Friday should reach about 89 before a sharper cooldown brings highs near 81 Saturday and 76 Sunday.
Forecasters also expect elevated fire-weather conditions in higher terrain through Thursday because of hot, dry conditions and weak overnight humidity recovery. Use extra care with grills, power tools and anything else that could create a spark near dry vegetation.
Plan Outdoor Time Around The Heat
Drink plenty of water, wear lightweight clothing and move strenuous outdoor activity to the morning or evening. Check on older adults, young children, outdoor workers and neighbors who may need help staying cool.
Never leave children or pets in an unattended vehicle, even for a short errand. Car interiors can become dangerously hot within minutes, while the combination of high afternoon temperatures and mild overnight lows can make this stretch harder on vulnerable residents.
