Rainfall

Variable Rainfall in a Mediterranean Climate

With a Mediterranean climate, temperatures within the Water Authority’s service area are traditionally mild year-round. Additionally, average annual rainfall totals roughly 10 inches on the coast and more than 33 inches in the inland mountains. Rainfall follows a seasonal distribution pattern, with much of the region’s precipitation occurring between December and March.

Note: The table below displays annual rainfall by location and Water Year. You can filter the table to show just one location at a time and/or only specific years. You can also sort data within each location by Water Year, actual rainfall, normal rainfall or the percentage of normal. Normal rainfall is adjusted periodically to reflect recent historic years. Water years begin October 1 and end September 30.

20-Yr Chart
55-Yr Data Table

20-Yr Chart

55-Yr Data Table

Location:

Water Year:

Location	Water Year	Actual Rainfall (Inches)	Normal Rainfall (inches)	% of Normal
Lindbergh Field	1965	8.81	10.41	85%
Lindbergh Field	1966	14.76	10.41	142%
Lindbergh Field	1967	10.86	10.41	104%
Lindbergh Field	1968	7.86	10.41	76%
Lindbergh Field	1969	11.48	10.41	110%
Lindbergh Field	1970	6.33	10.41	61%
Lindbergh Field	1971	8.03	10.41	77%
Lindbergh Field	1972	6.12	10.41	59%
Lindbergh Field	1973	10.99	10.41	106%
Lindbergh Field	1974	6.59	10.41	63%
Lindbergh Field	1975	10.64	10.41	102%
Lindbergh Field	1976	10.14	10.41	97%
Lindbergh Field	1977	9.18	10.41	88%
Lindbergh Field	1978	17.30	10.41	166%
Lindbergh Field	1979	14.93	10.41	143%
Lindbergh Field	1980	15.62	10.41	150%
Lindbergh Field	1981	8.13	10.41	78%
Lindbergh Field	1982	11.85	10.41	114%
Lindbergh Field	1983	18.49	10.41	178%
Lindbergh Field	1984	5.37	10.41	52%
Lindbergh Field	1985	9.60	10.41	92%
Lindbergh Field	1986	14.95	10.41	144%
Lindbergh Field	1987	9.30	10.41	89%
Lindbergh Field	1988	12.44	10.41	120%
Lindbergh Field	1989	5.88	10.41	56%
Lindbergh Field	1990	7.62	10.41	73%
Lindbergh Field	1991	12.31	9.83	125%
Lindbergh Field	1992	12.48	9.90	126%
Lindbergh Field	1993	18.26	9.90	184%
Lindbergh Field	1994	9.93	9.90	100%
Lindbergh Field	1995	17.13	9.90	173%
Lindbergh Field	1996	5.18	9.90	52%
Lindbergh Field	1997	7.73	9.90	78%
Lindbergh Field	1998	17.16	9.90	173%
Lindbergh Field	1999	6.50	9.90	66%
Lindbergh Field	2000	5.75	9.90	58%
Lindbergh Field	2001	8.57	10.68	80%
Lindbergh Field	2002	3.30	10.77	31%
Lindbergh Field	2003	10.31	10.77	96%
Lindbergh Field	2004	5.18	10.77	48%
Lindbergh Field	2005	22.60	10.77	210%
Lindbergh Field	2006	5.36	10.77	50%
Lindbergh Field	2007	3.85	10.77	36%
Lindbergh Field	2008	7.20	10.77	67%
Lindbergh Field	2009	9.15	10.77	85%
Lindbergh Field	2010	10.60	10.77	98%
Lindbergh Field	2011	12.70	10.34	123%
Lindbergh Field	2012	7.90	10.34	76%
Lindbergh Field	2013	6.55	10.34	63%
Lindbergh Field	2014	5.09	10.34	49%
Lindbergh Field	2015	11.91	10.34	115%
Lindbergh Field	2016	8.18	10.34	79%
Lindbergh Field	2017	12.73	10.34	123%
Lindbergh Field	2018	3.34	10.34	32%
Lindbergh Field	2019	12.93	10.34	125%
Lindbergh Field	2020	13.60	10.34	132%
Lindbergh Field	2021	5.24	10.49	50%
Lindbergh Field	2022	6.75	9.79	69%
Lake Cuyamaca	1965	27.86	35.40	79%
Lake Cuyamaca	1966	37.48	35.40	106%
Lake Cuyamaca	1967	47.04	35.40	133%
Lake Cuyamaca	1968	28.49	35.40	80%
Lake Cuyamaca	1969	46.85	35.40	132%
Lake Cuyamaca	1970	20.48	35.40	58%
Lake Cuyamaca	1971	30.23	35.40	85%
Lake Cuyamaca	1972	20.98	35.40	59%
Lake Cuyamaca	1973	52.10	35.40	147%
Lake Cuyamaca	1974	23.58	35.40	67%
Lake Cuyamaca	1975	34.79	35.40	98%
Lake Cuyamaca	1976	34.48	35.40	97%
Lake Cuyamaca	1977	25.14	35.40	71%
Lake Cuyamaca	1978	54.80	35.40	155%
Lake Cuyamaca	1979	42.26	35.40	119%
Lake Cuyamaca	1980	72.39	35.40	204%
Lake Cuyamaca	1981	21.80	35.40	62%
Lake Cuyamaca	1982	40.10	35.40	113%
Lake Cuyamaca	1983	74.42	35.40	210%
Lake Cuyamaca	1984	28.44	35.40	80%
Lake Cuyamaca	1985	33.00	35.40	93%
Lake Cuyamaca	1986	40.63	35.40	115%
Lake Cuyamaca	1987	21.67	35.40	61%
Lake Cuyamaca	1988	31.06	35.40	88%
Lake Cuyamaca	1989	22.45	35.40	63%
Lake Cuyamaca	1990	20.17	35.40	57%
Lake Cuyamaca	1991	34.65	34.58	100%
Lake Cuyamaca	1992	34.21	34.57	99%
Lake Cuyamaca	1993	60.46	34.57	175%
Lake Cuyamaca	1994	32.28	34.57	93%
Lake Cuyamaca	1995	56.82	34.57	164%
Lake Cuyamaca	1996	19.87	34.57	57%
Lake Cuyamaca	1997	27.39	34.57	79%
Lake Cuyamaca	1998	55.00	34.57	159%
Lake Cuyamaca	1999	25.52	34.57	74%
Lake Cuyamaca	2000	19.40	33.03	59%
Lake Cuyamaca	2001	15.89	35.83	44%
Lake Cuyamaca	2002	9.46	35.83	26%
Lake Cuyamaca	2003	34.46	35.83	96%
Lake Cuyamaca	2004	19.10	35.83	53%
Lake Cuyamaca	2005	55.38	35.83	155%
Lake Cuyamaca	2006	23.42	35.83	65%
Lake Cuyamaca	2007	14.00	35.83	42%
Lake Cuyamaca	2008	27.42	35.83	77%
Lake Cuyamaca	2009	19.78	35.83	55%
Lake Cuyamaca	2010	37.82	35.83	106%
Lake Cuyamaca	2011	42.55	33.41	127%
Lake Cuyamaca	2012	24.29	33.41	73%
Lake Cuyamaca	2013	18.16	33.41	54%
Lake Cuyamaca	2014	16.75	33.41	50%
Lake Cuyamaca	2015	21.20	33.41	63%
Lake Cuyamaca	2016	21.67	33.41	65%
Lake Cuyamaca	2017	35.32	33.41	106%
Lake Cuyamaca	2018	12.07	33.41	36%
Lake Cuyamaca	2019	40.27	33.41	121%
Lake Cuyamaca	2020	31.14	33.41	93%
Lake Cuyamaca	2021	18.87	33.41	56%
Lake Cuyamaca	2022	24.07	33.41	72%
Lake Henshaw	1965	22.32	27.42	81%
Lake Henshaw	1966	27.51	27.42	100%
Lake Henshaw	1967	33.80	27.42	123%
Lake Henshaw	1968	17.58	27.42	64%
Lake Henshaw	1969	44.70	27.42	163%
Lake Henshaw	1970	15.05	27.42	55%
Lake Henshaw	1971	19.65	27.42	72%
Lake Henshaw	1972	15.51	27.42	57%
Lake Henshaw	1973	33.84	27.42	123%
Lake Henshaw	1974	13.43	27.42	49%
Lake Henshaw	1975	24.01	27.42	88%
Lake Henshaw	1976	27.42	27.42	100%
Lake Henshaw	1977	19.38	27.42	71%
Lake Henshaw	1978	48.76	27.42	178%
Lake Henshaw	1979	40.61	27.42	148%
Lake Henshaw	1980	55.25	27.42	201%
Lake Henshaw	1981	19.81	27.42	72%
Lake Henshaw	1982	35.35	27.42	129%
Lake Henshaw	1983	50.20	27.42	183%
Lake Henshaw	1984	20.38	27.42	74%
Lake Henshaw	1985	22.19	27.42	81%
Lake Henshaw	1986	32.09	27.42	117%
Lake Henshaw	1987	18.56	27.42	68%
Lake Henshaw	1988	26.00	27.42	95%
Lake Henshaw	1989	15.43	27.42	56%
Lake Henshaw	1990	16.19	27.42	59%
Lake Henshaw	1991	31.18	26.18	119%
Lake Henshaw	1992	27.32	26.02	105%
Lake Henshaw	1993	55.55	26.02	213%
Lake Henshaw	1994	22.95	26.02	88%
Lake Henshaw	1995	44.17	26.02	170%
Lake Henshaw	1996	14.99	26.02	58%
Lake Henshaw	1997	23.28	26.02	89%
Lake Henshaw	1998	46.43	26.02	178%
Lake Henshaw	1999	15.83	26.02	61%
Lake Henshaw	2000	16.87	26.02	65%
Lake Henshaw	2001	17.51	27.91	63%
Lake Henshaw	2002	7.81	27.91	28%
Lake Henshaw	2003	27.50	27.91	99%
Lake Henshaw	2004	13.71	27.91	49%
Lake Henshaw	2005	46.91	27.91	168%
Lake Henshaw	2006	21.18	27.91	76%
Lake Henshaw	2007	10.13	27.91	36%
Lake Henshaw	2008	29.42	27.91	105%
Lake Henshaw	2009	20.46	27.91	73%
Lake Henshaw	2010	32.42	27.91	116%
Lake Henshaw	2011	36.24	26.69	136%
Lake Henshaw	2012	20.49	26.69	77%
Lake Henshaw	2013	14.24	26.69	53%
Lake Henshaw	2014	12.47	26.69	47%
Lake Henshaw	2015	18.03	26.69	68%
Lake Henshaw	2016	18.98	26.69	71%
Lake Henshaw	2017	35.52	26.69	133%
Lake Henshaw	2018	9.98	26.69	37%
Lake Henshaw	2019	36.17	26.69	136%
Lake Henshaw	2020	28.42	26.69	106%
Lake Henshaw	2021	15.78	26.69	59%
Lake Henshaw	2022	16.37	25.50	64%