Hurricanes and Tornadoes That Hit Isleton, CA

The nearest NOAA station with 1991–2020 climate normals is Antioch Pumping Plt #3, CA, 15 miles southwest of Isleton at 60 feet. July is the warmest, with an average high of 91°F and low of 61°F; January is the coolest, at 56°F and 40°F. January is the wettest at 2.7 inches of precipitation on average and July and August the driest at 0.0 inches; the year adds up to 12.7 inches over 30 days with at least a tenth of an inch. Highs reach 90°F on about 64 days a year, almost all from May to October. Lows fall below freezing on about 7 nights a year. That 12.7 inches is more than at 77 of the 226 California stations used on this site (34%). Woodbridge, 16 miles east, has its own station (Lodi, CA): 18.2 inches a year, 5.5 more than here, and a July average high of 92°F against 91°F.

Water temperature at the NOAA tide station Port Chicago, CA, 25 miles west, averaged 71°F in August and 51°F in January over 2021–2025. No month averaged 80°F. Sea level at the Port Chicago tide gauge, 25 miles from Isleton, has risen 0.77 ± 0.23 inches per decade from 1976 to 2025, NOAA's linear trend; at that pace it is 7.7 inches in a hundred years. That is faster than at 36 of the 144 U.S. gauges with a NOAA trend.

Flood insurance policyholders in Isleton's ZIP code 95641 have filed 102 claims with the National Flood Insurance Program since 1980, and were paid $1.7 million for buildings and contents, in the dollars of each year. The most came from Flooding in 1997: 75 claims (74% of all) and $1.6 million. 80% 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, 319 have fewer than Isleton.