Cooper Climatology

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Cooper (Delta County)

33º 22' N 95º 41' W

480 ft

30-Year Precipitation Normals (1991-2020)
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Month	3.09	3.61	4.53	4.60	5.35	3.45	2.85	2.62	3.25	4.95	3.72	3.92	45.94
Monthly Precipitation
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
2025	6.00	2.06	4.39	5.76	8.70	8.71	4.62	1.38	2.28	1.97	5.66
2024	3.44	1.99	7.49	6.00	7.33	4.71	2.54	0.00	4.35	1.10	2.89	6.13	47.97
2023	2.20	7.01	5.47	4.78	2.93	6.89	4.30	0.14	1.47	12.04	0.87	5.29	53.39
2022	0.64	3.00	5.06	5.55	4.47	1.44	1.07	4.25	0.74	6.93	6.18	2.76	42.09
2021	5.31	3.73	3.36	5.43	9.45	6.04	5.74	3.13	0.06	4.00	3.29	1.06	50.60
2020	3.83	4.01	11.78	2.68	6.23	1.69	3.55	1.58	6.28	3.21	1.63	3.80	50.27
2019	2.85	4.72	3.77	7.86	13.25	8.53	0.70	8.92	1.08	6.93	1.95	2.01	62.57
2018	1.56	11.37	4.55	1.46	2.95	1.72	3.29	3.22	10.63	9.06	5.16	6.38	61.35
2017	2.76	2.10	1.35	6.07	2.23	4.61	4.88	7.57	0.05	2.66	0.97	3.77	39.02
2016	1.78	2.58	6.57	12.89	3.34	5.58	2.93	4.78	0.77	1.26	3.35	1.07	46.90
2015	4.39	3.87	7.28	6.02	11.54	4.25	0.99	1.68	1.56	12.70	11.03	9.92	75.23
2014	0.80	0.97	2.32	5.55	5.29	3.74	5.72	1.18	1.00	3.65	0.98	3.11	34.31
2013	2.92	2.80	1.85	2.12	5.73	4.34	4.27	0.74	4.35	4.62	3.49	2.89	40.12
2012	6.01	3.87	7.98	4.11	4.02	2.26	1.75	2.65	2.31	2.53	0.65	3.58	41.72
2011	1.29	3.22	0.32	5.85	6.75	1.19	0.89	1.17	0.87	1.78	2.28	6.56	32.17
2010	4.16	3.90	3.18	1.65	2.40	3.00	3.15	0.66	5.03	3.25	3.58	1.72	35.68
2009	1.96	2.05	5.12	7.58	10.92	1.06	7.23	3.16	6.31	15.00	3.19	3.21	66.79
2008	M	M	9.24	6.50	3.64	4.12	0.01	4.02	3.29	1.87	2.52	0.79	NA
2007	5.82	0.68	3.64	1.41	2.84	5.30	6.94	M	M	M	M	M	NA
2006	3.53	4.87	6.37	M	M	0.38	0.57	3.86	1.05	5.97	1.53	4.94	NA
2005	2.44	2.19	2.51	2.96	0.76	0.62	M	2.10	2.45	0.05	M	0.22	NA
2004	M	5.62	M	3.01	2.56	5.05	M	2.52	0.46	2.04	8.16	M	NA
2003	M	2.75	1.07	1.58	2.79	5.77	1.17	0.08	3.09	1.29	2.71	1.16	NA
2002	NOT AVAILABLE
2001	3.30	7.90
2000	2.89	2.05	5.08	5.25	6.39	11.09	0.00	0.10	2.30	3.60	13.10	5.30	57.15
1999	2.48	0.80	1.90	2.70	M	M	1.73	M	M	2.56	2.65	3.00	NA
1998	6.27	4.52	5.21	3.21	1.41	1.73	M	2.75	3.94	7.05	M	6.82	NA
1997	1.42	8.04	3.39	7.52	4.95	1.95	0.85	2.30	0.95	4.30	1.45	5.05	42.17
1996	0.60	1.11	2.94	2.95	1.55	3.84	3.05	4.86	3.10	5.86	11.29	1.20	42.35
1995	4.10	1.09	M	3.94	M	5.37	3.23	0.49	7.18	0.00	1.57	2.58	NA
1994	3.38	3.60	1.45	3.86	7.36	1.16	6.60	2.65	3.75	4.03	5.22	4.33	47.39
1993	2.72	4.46	3.36	5.96	2.55	M	0.48	1.61	4.22	13.75	4.27	4.64	NA
1992	4.04	4.11	M	2.03	M	M	9.51	0.93	1.77	0.84	4.04	4.71	NA
1991	M	M	3.03	8.51	8.63	M	1.44	3.32	3.34	9.52	5.12	8.55	NA
1990	7.75	5.36	9.28	6.02	11.23	M	M	M	4.10	2.56	4.87	3.71	NA
1989	3.73	4.89	3.73	0.80	8.66	5.73	7.40	2.39	M	1.57	0.59	0.37	NA
1988	1.35	2.42	4.03	1.22	0.49	1.88	7.29	2.60	1.23	6.82	5.03	2.61	36.97
1987	2.91	4.74	2.61	1.51	4.22	8.94	M	0.97	8.39	4.14	11.00	5.77	NA
1986	0.00	3.95	1.12	6.18	3.81	5.11	3.21	2.05	3.43	4.38	5.13	2.22	40.59
1985	0.49	2.80	7.85	4.67	5.68	2.59	1.72	0.00	1.99	5.28	6.81	3.80	43.68
1984	1.77	4.58	7.66	2.64	3.42	1.24	0.58	2.22	2.63	7.32	2.24	3.03	39.33
1983	0.60	5.50	5.57	0.28	7.81	3.11	3.06	2.47	2.09	2.40	3.51	2.62	39.02
1982	2.74	1.86	1.32	3.22	12.86	4.94	2.86	2.51	2.40	1.87	6.20	6.76	49.54
1981	0.78	1.15	3.39	1.64	7.55	7.01	1.60	1.11	1.08	13.31	2.77	0.85	42.24
1980	4.93	1.64	1.54	3.25	5.16	2.86	0.90	0.00	8.83	2.46	2.13	2.60	36.30
1979	3.27	2.77	5.80	2.55	9.72	3.13	3.76	3.55	2.80	3.58	0.98	3.71	45.62
1978	2.32	4.56	3.07	2.23	4.31	1.25	1.20	1.16	0.59	0.08	5.21	4.81	30.79
1977	M	3.22	8.45	3.51	0.85	4.25	2.53	2.86	1.72	1.55	2.04	1.88	NA
1976	0.30	1.28	5.90	7.49	7.08	3.56	4.93	1.08	7.15	4.74	0.54	4.57	48.62
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
1975	1.83	4.17	5.18	2.58	4.84	6.61	1.69	0.53	0.40	0.28	1.64	2.25	32.00
1974	4.45	0.92	0.74	4.48	4.06	6.70	1.92	5.60	6.52	6.29	6.40	3.05	51.13
1973	3.69	2.83	6.81	8.30	3.15	5.47	1.37	3.66	12.93	7.79	4.82	4.95	65.77
1972	1.55	0.50	2.95	2.10	2.83	4.01	1.33	2.45	7.26	7.63	4.52	2.10	39.23
1971	0.52	2.90	0.77	1.57	3.26	0.53	3.32	3.46	2.26	10.46	1.47	14.02	44.54
1970	1.10	6.35	4.22	5.22	0.92	0.91	0.00	1.11	7.74	6.54	1.72	1.68	37.51
1969	5.31	4.36	5.47	2.60	10.17	3.27	2.15	0.55	2.51	6.70	1.07	4.67	48.83
1968	2.94	2.30	6.15	5.15	5.58	7.50	4.83	0.45	8.25	1.75	3.89	4.46	53.25
1967	0.67	1.44	3.15	8.77	10.27	2.81	2.77	1.72	6.95	6.75	1.76	3.73	50.79
1966	2.43	5.43	0.78	13.78	5.19	1.34	2.60	5.62	3.22	1.20	0.30	2.80	44.69
1965	2.85	6.92	1.35	1.55	9.92	4.00	2.25	0.60	5.30	0.80	1.90	1.91	39.35
1964	1.60	3.05	4.87	6.20	4.25	2.60	1.50	4.45	7.24	0.00	5.52	1.00	42.28
1963	1.65	0.51	2.52	4.10	4.20	2.05	6.82	0.02	0.85	0.15	2.35	2.30	27.52
1962	2.99	2.67	3.49	3.97	2.12	8.83	3.45	2.80	9.25	4.35	4.65	0.60	49.17
1961	2.37	2.41	4.75	0.60	2.90	4.78	1.92	3.20	3.45	1.38	5.32	3.54	36.62
1960	3.86	2.64	2.39	1.92	3.47	8.00	3.90	2.70	5.45	3.09	0.86	8.03	46.31
1959	1.40	3.43	2.25	3.55	3.03	5.42	6.39	3.23	2.68	6.44	2.08	4.80	44.70
1958	2.89	1.24	4.21	8.86	5.66	6.33	3.93	1.18	2.88	0.82	3.05	1.78	42.83
1957	4.09	M	M	M	M	0.45	1.72	4.08	6.66	4.99	10.67	1.92	NA
1956	1.92	4.43	0.91	2.67	3.25	2.89	0.80	0.46	0.09	1.55	5.19	1.80	25.96
1955	1.07	3.21	3.10	3.48	2.53	1.95	4.12	5.69	2.30	0.26	0.71	1.25	29.67
1954	4.94	0.84	1.02	2.69	6.65	0.95	0.28	0.51	2.93	11.02	2.06	2.57	36.46
1953	2.27	1.46	5.00	8.38	2.56	0.34	8.49	4.14	1.55	1.77	4.22	4.19	44.37
1952	3.29	3.84	3.25	8.29	5.77	0.85	1.38	0.06	0.10	0.15	8.72	4.10	39.80
1951	3.29	3.76	0.77	1.10	2.94	8.33	2.37	0.25	4.30	3.70	2.50	1.27	34.58
1950	3.73	8.21	1.50	3.33	6.64	3.31	3.45	3.81	8.32	2.14	0.55	0.55	45.54
1949	10.96	3.91	3.84	5.45	2.70	3.08	2.51	1.97	2.54	4.67	0.92	3.23	45.78
1948	1.78	1.23	4.23	2.93	6.43	2.10	1.45	0.75	0.13	2.92	1.38	2.67	28.00
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann

Location below

Map of the Cooper region

Map from tiger.census.gov