San Jose is starting today on the cool side, with Mineta San Jose International Airport reporting about 50°F early this morning. That chill will not stick around for long. Skies stay clear and sunny with a quick warmup into the afternoon, and highs are expected to reach about 81°F. Inland neighborhoods will trend even hotter through the weekend, while nights hang out in the upper 40s to low 60s, which should keep mornings relatively comfortable even as afternoons heat up.
Record Watch And Timing
Highs are forecast near 81°F today, about 79°F tomorrow, and roughly 80°F Saturday. Temperatures are projected to climb to around 85°F next Sunday, then into the low 90s next Monday and Tuesday (March 16–17). Forecasters are calling for widespread minor heat risk through Saturday, with areas of moderate heat risk Sunday through Wednesday. There is roughly a 50% chance San Jose will reach 90°F, which would mark the first March 90°F on record for SJC, according to the National Weather Service.
Heat Risks And Where To Cool Off
If you do not have reliable air conditioning, it is a good idea to move heavy outdoor work or workouts into the morning or evening and keep water close at hand. The hottest stretch will hit in the mid to late afternoon. For county cooling locations and heat safety resources, check the Santa Clara County OEM.
Boaters, Commuters And Timing
Strong high pressure is driving northerly breezes over coastal waters, and a Small Craft Advisory is in effect into early Saturday for parts of the central coast. On land, northwest afternoon winds should generally top out around 5 to 8 mph inland, with gustier pockets on exposed ridges and bridges during the commute. Mariners and anyone planning time on or near the water should check the latest marine forecast before heading out, according to the National Weather Service.
If you are hosting outdoor events this weekend, aim for mornings or evenings, check in on neighbors who may not have cooling, and bring extra water for pets and workers. Forecasts will be updated if records start to look likely to fall, so keep an eye on local forecasts and county resources for the latest guidance.
