Hurricanes and Tornadoes That Hit San Jose, CA

The nearest NOAA station with 1991–2020 climate normals is San Jose, CA, 3 miles northwest of San Jose at 67 feet. August is the warmest, with an average high of 83°F and low of 60°F; December is the coolest, at 59°F and 43°F. February is the wettest at 3.2 inches of precipitation on average and July and August the driest at 0.0 inches; the year adds up to 16.1 inches over 38 days with at least a tenth of an inch. Highs reach 90°F on about 21 days a year, almost all from May to September. Lows fall below freezing on about 2 nights a year. That 16.1 inches is more than at 115 of the 226 California stations used on this site (51%). Campbell, 5 miles southwest, has its own station (Los Gatos, CA): 22.3 inches a year, 6.2 more than here, and an August average high of 85°F against 83°F.

Water temperature at the NOAA tide station Redwood City, CA, 23 miles northwest, averaged 74°F in August and 54°F in January over 2021–2025. No month averaged 80°F. Sea level at the Redwood City tide gauge, 23 miles from San Jose, has risen 1.08 ± 0.25 inches per decade from 1974 to 2025, NOAA's linear trend; at that pace it is 10.8 inches in a hundred years. That is faster than at 62 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 101 flood, rain, thunderstorm wind and lightning events that began within 10 miles of San Jose: 87 floods, 4 heavy rain events, 4 lightning strikes, 3 flash floods and 3 thunderstorm wind reports. They killed 2 people and injured 2, and the NWS estimated $26,000 in property and crop damage. The strongest thunderstorm gust on record here was 81 mph, on January 18, 2010.

Flood insurance policyholders in San Jose's 24 ZIP codes have filed 618 claims with the National Flood Insurance Program since 1978, and were paid $9.4 million for buildings and contents, in the dollars of each year. The most came from Flooding in 1995: 195 claims (32% of all) and $1.3 million, then Pineapple Express - Southern in 1998 with 61 and California Atmospheric River in 2023 with 12. The year with the most claims was 2017, with 155. 44% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 415 California cities on this site with 10 or more claims, 402 have fewer than San Jose.