Hurricanes and Tornadoes That Hit Boulder Creek, CA

The nearest NOAA station with 1991–2020 climate normals is Ben Lomond #4, CA, 6 miles southeast of Boulder Creek at 420 feet. August is the warmest, with an average high of 90°F and low of 51°F; December is the coolest, at 64°F and 37°F. January and December are the wettest at 10.4 inches of precipitation on average and July and August the driest at 0.0 inches; the year adds up to 49.5 inches over 50 days with at least a tenth of an inch. Highs reach 90°F on about 54 days a year, almost all from April to October. Lows fall below freezing on about 37 nights a year. That 49.5 inches is more than at 215 of the 226 California stations used on this site (95%). Saratoga, 10 miles northeast, has its own station (Los Gatos, CA): 22.3 inches a year, 27.2 less than here, and an August average high of 85°F against 90°F.

Water temperature at the NOAA tide station Redwood City, CA, 25 miles north, 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, 25 miles from Boulder Creek, 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 62 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Boulder Creek: 33 floods, 14 heavy rain events, 8 flash floods and 7 thunderstorm wind reports. They killed 1 person and injured 3, and the NWS estimated $5.5 million in property and crop damage. The strongest thunderstorm gust on record here was 96 mph, on October 13, 2025. Of the 550 California cities on this site with a flash flood on record, 247 have had fewer than Boulder Creek.

Flood insurance policyholders in Boulder Creek's ZIP code 95006 have filed 127 claims with the National Flood Insurance Program since 1980, and were paid $753,000 for buildings and contents, in the dollars of each year. The most came from Pineapple Express - Southern in 1998: 52 claims (41% of all) and $499,000, then Flooding in 1995 with 34. 73% 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, 340 have fewer than Boulder Creek.