San Jose woke up to crystal-clear skies Saturday and is already on a fast track toward a toasty afternoon, with temperatures expected to climb into the mid-80s. Forecasts call for mostly sunny skies and a high near 84°F today, with overnight lows slipping back into the upper 40s. Tomorrow looks even hotter, with inland neighborhoods potentially edging up toward 86°F. Light winds will keep the warmth focused inland instead of sending it out toward the coast.
According to the National Weather Service, a strengthening ridge of high pressure will keep offshore flow weak, allowing temperatures to peak over the weekend. Forecasters have trimmed today’s projected highs slightly in recent model runs, which cuts the odds of setting any records today, while keeping tomorrow as the better bet for record-challenging heat. The agency also notes that conditions stay dry through the weekend, with no watches or warnings currently in effect for the Bay Area.
Afternoon Heat Flirts With April Records
The hottest readings will show up inland and in valley neighborhoods, with spots like Evergreen, Berryessa and Santa Clara likely reaching the mid-80s, while areas right on the bay stay much cooler. Long-term climate records for San Jose list today at 87°F and tomorrow at 89°F, so a Sunday high near 86°F could come close to those marks in the sunniest, more exposed locations.
Fog Creeps Back Monday, Light Rain Chance Midweek
Forecast models bring onshore flow back early next week, rebuilding the marine layer and producing patchy coastal and valley fog Monday and Tuesday mornings, along with a drop of about 5 to 10°F in daytime highs. Chances for light rain pick up by the middle to latter part of the week, with the best shot at scattered showers around Wednesday and Thursday, although any rainfall totals are expected to stay on the lighter side for now.
Plan Ahead
If you are heading outside this weekend, try to schedule more active plans for the morning hours, or stick to shady spots in the afternoon and keep water handy. The heat is not extreme, but it will feel unseasonably warm away from the coast. Looking ahead, the morning fog early next week could cut visibility for commuters, so it is worth building in a little extra travel time if you are on the road before 9 a.m.
For hour-by-hour details and any forecast adjustments, check the National Weather Service San Francisco office and local forecast pages.
