As of Oct 13, 2026, the latest day this gauge has reported

How much rain has San Joaquin County, California, had in 2026?

12.23 inches of rain have fallen so far in 2026 at the volunteer rain gauge 5.8 miles east-northeast of Linden, San Joaquin County, through Oct 13. That is 1.46 inches less than a usual year to date (89% of usual).

Rain so far
12.23 in
Usual by Oct 13
13.69 in
Percent of usual
89%
2025 by Oct 13
8.70 in
Running total of rain in San Joaquin County, 2026, against a usual year051015JFMAMJJASOND2026Usual
Inches of rain added up day by day from Jan 1, solid line, against the usual year at this gauge (dashed), counted on the same days. Days with no report add nothing to either line.

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Month by month

Rain by month in San Joaquin County, California, 2026
MonthRain, inUsual, inVs usual
Jan2.353.72−1.37
Feb4.443.63+0.81
Mar0.003.03−3.03
Apr4.941.78+3.16
May0.491.00−0.51
Jun0.000.20−0.20
Jul0.000.000.00
Aug0.010.00+0.01
Sep0.000.08−0.08
Oct to the 13th0.000.25−0.25
So far12.2313.69−1.46

2026 so far in San Joaquin County

The station, and what usual means

The numbers come from NOAA’s daily record for the volunteer rain gauge 5.8 miles east-northeast of Linden (gauge ID US1CASJ0001), 17 miles from the middle of San Joaquin County. It reported every one of the 286 days from Jan 1 to Oct 13. Rain here means everything the gauge caught: rain, and snow melted down to water. A trace counts as zero. It is read once a day, usually in the morning, and each reading is filed under the day it was read, so an evening storm can show up on the next day.

Usual means NOAA’s 1991 to 2020 daily normals for this gauge, added up over the same 286 days the gauge reported, so a missing day counts on neither side. The volunteer gauges started in 1998, so none has 30 years of its own; NOAA estimates the rest from long-record stations nearby.

Why this gauge: 6 stations inside San Joaquin County reported at least 90% of the days in 2026. Mountain snow sites, and stations far above the rest in the county, come last, since their rain is not what the farms below get. Then the pick goes to one with NOAA normals, then the most days reported, then the one nearest the middle of the county. Your own rain gauge can read differently a few miles away.

Questions

How much rain has San Joaquin County, California, had in 2026?

12.23 inches of rain have fallen so far in 2026 at the volunteer rain gauge 5.8 miles east-northeast of Linden, San Joaquin County, through Oct 13. That is 1.46 inches less than a usual year to date (89% of usual).

Is San Joaquin County wetter or drier than usual in 2026?

Drier so far. The volunteer rain gauge 5.8 miles east-northeast of Linden had 12.23 inches from Jan 1 to Oct 13, 89% of the usual 13.69 inches for the same days.

What was the wettest month in San Joaquin County in 2026?

April, with 4.94 inches at the volunteer rain gauge 5.8 miles east-northeast of Linden, counting Jan 1 through Oct 13.

What was the biggest rain in San Joaquin County in 2026?

1.66 inches on Feb 17, 2026, the most the gauge caught in one day this year through Oct 13.

How does 2026 compare with 2025 in San Joaquin County?

From Jan 1 to Oct 13, the volunteer rain gauge 5.8 miles east-northeast of Linden had 8.70 inches in 2025 and 12.23 inches in 2026. 2026 had 3.53 inches more than 2025.

Next door

Rain in California, county by county · PRF insurance in San Joaquin County · Farmland Atlas: San Joaquin County