San Jose is starting today clear and cool in the low 60s, but that brief morning comfort will give way to a hot afternoon. Temperatures are expected to climb into the low 90s under sunny skies, with a Heat Advisory covering the Santa Clara Valley and eastern hills through 10 p.m.
Afternoon Heat Peaks Near 93
The forecast calls for a high near 93 degrees today, with northwest winds increasing to about 8 mph by late afternoon. Rain is not expected, and evening temperatures should slide back toward the low 60s.
The National Weather Service San Francisco office says temperatures outside the marine layer may run 10 to 15 degrees above normal, with moderate heat risk across much of the interior and locally higher risk in the hills.
Heat And Fire Concerns Continue
Residents should drink water, limit strenuous outdoor activity during the hottest part of the day, and check on older adults, children and anyone without reliable cooling. The heat advisory also warns people never to leave children or pets in unattended vehicles, where temperatures can become dangerous within minutes.
Very dry conditions will also raise fire concerns in higher terrain, even though winds are not expected to reach the levels needed for a Red Flag Warning. Outdoor activities involving flames should be handled with extra care.
Noticeably Cooler By Midweek
A gradual cooldown begins tomorrow, when San Jose is forecast to reach 89 degrees, followed by highs near 87 Tuesday and 84 Wednesday. Thursday through Saturday should be milder, with highs around 80 and overnight lows in the upper 50s to low 60s.
Mostly sunny skies will dominate the week, although patchy morning fog is expected Friday and areas of fog may return overnight into Saturday. The rain chance remains close to zero throughout the forecast period, so the main change will be temperature, not a sudden switch to wet weather.
