The California Department of Water Resources measures the rain year from October 1st to September 30th.
Measured rainfall for the 2014/2015 season:
September 30th: 0.03 inches
June 11th: 0.08 inches
May 14th: 0.31 inches
May 7th: 0.09 inches
April 25th: 0.37 inches
April 8th: 0.60 inches
March 23rd: 0.07 inches
March 22nd: 0.03 inches
March 11th: 0.10 inches
March 2nd: 0.01 inches
March 1st: 0.10 inches
February 28th: 0.14 inches
February 8th: 1.86 inches (Accumulated on the 7th and 8th)
January 20th: 0.01 inches (Could be dew accumulation, but it accumulated so I’m logging it)
December 24th: 0.05 inches
December 20th: 0.18 inches
December 17th: 0.22 inches
December 16th: 0.67 inches
December 15th: 0.69 inches
December 12th: 0.22 inches
December 11th: 3.36 inches
December 7th: 0.06 inches
December 4th: 0.10 inches
December 3rd: 1.12 inches (Not a typo – same measurement two days in a row)
December 2nd: 1.12 inches
December 1st: 0.03 inches
November 30th: 0.65 inches
November 29th: 0.74 inches
November 22nd: 0.21 inches
November 13th: 0.16 inches
November 1st: 0.01 inches
October 31st: 0.48 inches
October 25th: 0.12 inches
October 20th: 0.01 inches
September: 0.31 inches (estimated)
Total: 14.31 inches
Measured rainfall for the 2015/2016 season:
May 7th: 0.03 inches
May 6th: 0.23 inches
April 22nd: 0.34 inches
April 14th: 0.05 inches
April 11th: 0.01 inches
April 10th: 0.48 inches
April 8th & 9th: 0.44 inches
March 28th: 0.03 inches
March 22nd: 0.05 inches
March 21st: 0.12 inches
March 20th: 0.06 inches
March 13th: 0.60 inches
March 12th: 0.05 inches
March 11th: 0.26 inches
March 8th: 0.02 inches
March 7th: 0.67 inches
March 6th: 0.62 inches
March 5th: 1.28 inches
March 4th: 0.26 inches
February 18th: 0.09 inches
February 17th: 0.27 inches
February 2nd: 0.05 inches
January 30th & 31st: 0.18 inches (combined both days)
January 29th: 0.02 inches
January 23rd: 0.10 inches
January 22nd: 0.42 inches
January 20th: 0.01 inches
January 18th & 19th: 1.03 inches
January 17th: 0.52 inches
January 16th: 0.25 inches
January 14th: 0.02 inches
January 13th: 0.11 inches
January 10th: 0.03 inches
January 9th: 0.04 inches
January 8th: 1.51 inches (combined for the preceding week)
December 28th: 0.19 inches
December 27th: 0.01 inches
December 24th: 0.31 inches
December 22nd: 0.36 inches
December 21st: 0.53 inches
December 19th: 0.29 inches
December 13th: 0.38 inches
December 11th: 0.11 inches
December 10th: 0.24 inches
November 25th: 0.19 inches
November 24th: 0.13 inches
November 15th: 0.43 inches
November 10th: 0.01 inches
November 9th: 0.36 inches
November 8th: 0.07 inches
November 2nd: 1.17 inches
October 28th: 0.02 inches
October 19th: 0.02 inches
October 1st: 0.04 inches
Total: 15.11 inches
Measured rainfall for the 2016/2017 season:
June 9th: 0.01 inches
June 8th: 0.04 inches
May 30th: 0.03 inches
April 20th: 0.07 inches
April 18th: 0.13 inches
April 17th: 0.06 inches
April 16h: 0.19 inches
April 13th: 0.29 inches
April 10th: 0.13 inches
April 8th: 0.78 inches
April 6th: 0.13 inches
March 29th: 0.01 inches
March 28th: 0.06 inches
March 25th: 0.22 inches
March 22nd: 0.50 inches
March 21st: 0.44 inches
March 6th: 0.04 inches
March 4th: 0.45 inches
February 27th: 0.02 inches
February 26th: 0.02 inches
February 20th & 21st: 2.14 inches
February 18th: 0.12 inches
February 17th: 0.86 inches
February 16th: 0.14 inches
February 9th: 0.59 inches
February 7th: 0.62 inches
February 5th: 0.22 inches
February 3rd: 0.01 inches
February 2nd: 0.22 inches
January 25th: 0.01 inches
January 24th: 0.20 inches
January 22nd: 0.70 inches
January 21st: 0.09 inches
January 20th: 1.02 inches
January 19th: 0.12 inches
January 18th: 0.45 inches
January 12th: 0.01 inches
January 11th: 0.12 inches
January 10th: 1.28 inches
January 8th: 1.41 inches
January 6th: 0.61 inches (several days accumulated)
January 3rd: 0.10 inches
January 2nd: 0.05 inches
December 23rd: 0.59 inches
December 15th: 0.49 inches
December 13th: 0.01 inches
December 10th: 0.46 inches
December 7th: 0.06 inches
December 3rd: 0.03 inches
November 27th: 0.56 inches
November 26th: 0.25 inches
November 21st: 0.27 inches
November 19th: 0.02 inches
November 1st: 0.08 inches
October 30th: 0.18 inches
October 28th: 0.89 inches
October 27th: 0.20 inches
October 16th: 0.53 inches
Total: 19.33 inches
Measured rainfall for the 2017/2018 season:
October 20th: 0.16 inches
November 3rd: 0.05 inches
November 4th: 0.07 inches
November 8th: 0.01 inches
November 9th, 0.16 inches
November 10th: 0.09 inches
November 12th: 0.01 inches
November 14th: 0.08 inches
November 15th: 0.01 inches
November 16th: 0.80 inches
November 17th: 0.03 inches
November 29th (date measured): 0.29 inches
December 20th: 0.06 inches
January 3rd: 0.29 inches
January 4th: 0.14 inches
January 5th: 0.07 inches
January 7th: 0.06 inches
January 8th: 1.12 inches
January 9th: 1.05 inches
January 15th: 0.01 inches
January 18th: 0.16 inches
January 19th: 0.01 inches
January 25th: 0.46 inches (2 days accumulated)
January 26th: 0.01 inches
March 3rd: 1.76 inches (storm total)
March 15th: 1.20 inches (3 days accumulated)
March 16th: 0.15 inches
March 22nd: 0.42 inches
March 24th: 0.17 inches
April 4th: 0.02 inches
April 6th: 0.42 inches
April 11th: 0.92 inches
Total: 10.26 inches