Lewisville Climatology

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Lewisville Dam (Denton County)

33º 04' N 97º 01' W

556 ft

30 Year Precipitation Normals (1991-2020)
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Month	2.24	2.34	3.40	3.43	4.36	3.77	2.29	2.00	2.82	4.25	2.62	2.96	36.48
Monthly Precipitation
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
2026	1.67	1.76	3.06	4.32	4.13	8.12	1.45	0.06
2025	3.47	0.85	1.63	3.65	6.54	4.21	2.96	2.45	4.51	3.13	4.31	0.06	37.77
2024	2.43	1.52	4.26	6.22	10.27	4.40	1.75	0.37	1.68	0.45	1.48	3.51	38.34
2023	1.04	4.27	1.75	0.90	2.53	1.48	0.87	0.00	1.00	10.60	0.48	2.80	27.72
2022	0.07	1.57	1.59	4.52	3.02	3.77	0.06	5.42	1.58	5.25	5.27	2.15	34.27
2021	2.26	2.66	1.87	3.44	5.56	4.35	3.84	2.29	0.13	4.80	2.27	0.37	33.84
2020	3.43	2.95	7.15	2.44	5.23	5.30	4.97	4.55	1.17	1.50	0.86	1.34	40.89
2019	1.77	1.43	1.75	7.81	6.95	4.40	0.72	3.75	0.00	5.30	1.74	1.34	36.96
2018	0.59	7.96	4.77	0.87	2.00	1.95	0.38	4.06	15.21	13.41	1.39	4.67	57.26
2017	3.67	1.79	3.55	2.11	1.21	8.83	1.25	5.58	0.73	2.32	0.81	4.09	35.94
2016	0.80	2.47	3.20	4.34	4.81	6.77	3.04	0.74	2.19	4.35	2.52	0.67	35.90
2015	2.44	2.02	1.65	8.52	9.67	3.93	2.75	0.00	0.34	6.04	11.66	4.35	53.37
2014	0.33	0.61	1.48	1.74	1.85	2.91	1.57	4.79	0.06	3.13	2.12	1.16	21.75
2013	4.06	1.12	2.45	1.88	2.32	2.82	1.53	0.66	2.61	2.03	2.38	1.36	24.76
2012	6.26	1.83	5.91	3.05	1.48	2.29	0.03	3.01	1.66	0.81	0.00	1.51	27.84
2011	1.79	0.89	0.08	2.56	5.23	3.50	0.00	1.10	0.74	0.83	1.35	4.33	22.40
2010	2.46	3.05	3.14	2.05	2.45	1.96	5.18	0.45	7.90	1.10	1.70	1.54	32.98
2009	0.33	2.35	5.11	3.77	6.69	2.46	3.14	0.56	7.56	9.46	1.32	2.04	44.79
2008	0.04	1.45	6.99	6.19	2.91	2.81	1.05	3.24	1.22	1.67	2.05	0.64	NA
2007	4.99	0.53	4.93	3.42	7.83	12.30	5.03	0.63	3.23	4.08	1.29	2.03	50.29
2006	2.11	2.79	4.48	2.28	1.58	0.31	0.28	2.00	2.41	4.09	1.68	4.77	28.78
2005	4.33	1.52	3.97	0.15	3.17	1.28	0.65	2.81	0.21	0.02	0.10	0.23	18.44
2004	2.51	4.09	3.18	4.56	2.33	9.17	6.23	4.49	2.23	4.32	7.53	0.62	51.26
2003	0.24	3.08	1.26	3.62	M	4.32	0.60	1.49	7.43	1.35	3.21	0.92	NA
2002	5.13	1.24	7.90	4.12	3.65	1.57	2.85	0.44	0.90	7.76	0.55	4.21	40.32
2001	1.83	3.45	6.15	0.78	6.46	3.08	0.69	3.14	2.20	1.47	0.75	2.86	32.86
2000	1.95	1.88	2.67	4.54	5.48	5.78	0.16	0.00	0.45	5.72	6.44	4.15	39.22
1999	1.14	0.36	2.43	4.13	6.70	1.31	0.11	0.00	0.98	1.90	0.13	2.89	22.08
1998	3.13	5.02	4.75	2.03	4.48	2.13	0.30	0.88	1.32	7.35	4.67	7.88	43.94
1997	M	M	M	5.79	M	M	M	1.99	2.80	9.62	M	6.64	NA
1996	NOT AVAILABLE
1995	2.15	0.51	9.04	5.96	6.03	2.08	2.75	0.25	M	1.61	M	M	NA
1994	1.32	1.62	M	M	5.80	1.42	8.80	0.25	4.22	8.97	M	1.57	NA
1993	1.95	5.67	2.58	M	M	2.40	0.00	M	M	5.29	1.83	2.01	NA
1992	M	2.37	2.56	M	5.44	5.34	2.79	2.55	4.44	2.51	3.49	4.36	NA
1991	2.75	1.83	0.75	5.25	5.65	5.14	1.84	3.72	4.82	M	M	10.33	NA
1990	7.99	M	7.24	9.04	M	M	2.64	M	M	M	3.86	1.18	NA
1989	4.78	3.91	3.31	1.27	6.89	13.38	4.39	1.35	3.76	M	0.12	M	NA
1988	M	M	1.89	1.17	3.57	1.48	3.43	M	3.43	0.98	2.12	2.80	NA
1987	1.97	M	M	0.23	9.16	5.53	M	M	M	M	M	M	NA
1986	0.00	3.21	1.63	6.74	5.68	6.57	0.25	2.43	5.66	2.58	M	2.36	37.11
1985	0.84	3.85	4.24	8.29	2.22	3.62	0.67	0.30	4.99	4.73	2.58	0.82	37.15
1984	1.17	3.61	4.27	1.10	4.06	2.55	0.14	2.17	0.21	7.15	2.16	3.76	32.35
1983	0.77	3.29	3.03	1.12	7.15	2.08	1.39	3.74	0.40	5.46	2.49	0.66	31.58
1982	3.20	2.01	1.68	2.64	14.61	3.03	2.48	0.96	0.53	2.59	3.89	3.43	41.05
1981	0.55	0.62	5.76	2.84	8.71	5.56	3.78	2.23	2.36	15.75	4.89	0.17	53.22
1980	2.66	1.00	1.36	1.19	2.08	0.68	0.37	0.00	8.69	2.14	1.25	2.22	23.64
1979	3.37	1.96	6.31	2.91	6.16	0.64	0.70	3.10	1.26	2.88	0.47	2.56	32.32
1978	1.65	3.80	2.72	2.58	8.40	0.70	0.26	0.89	1.41	0.58	3.05	0.81	26.85
1977	3.02	2.31	6.24	3.29	1.60	1.06	1.35	3.97	0.63	1.15	0.73	0.22	25.57
1976	0.17	0.61	2.89	6.53	6.63	3.15	1.59	0.35	3.62	4.23	0.45	2.28	32.50
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
1975	1.75	3.94	1.69	2.96	5.83	3.04	2.22	1.52	0.86	0.00	1.73	1.49	27.03
1974	1.08	1.14	0.87	5.69	1.03	5.43	1.11	5.82	5.37	6.03	3.08	1.70	38.35
1973	3.04	2.21	3.60	5.50	3.67	5.77	4.99	0.01	6.96	5.23	1.64	0.89	43.51
1972	0.68	0.31	1.01	2.80	2.24	2.02	0.61	1.23	3.30	7.65	4.42	0.55	26.82
1971	1.09	1.41	0.36	1.69	3.04	1.53	6.76	3.68	4.14	8.40	1.96	7.68	41.74
1970	0.72	5.38	2.76	5.57	2.97	0.19	0.79	2.49	5.80	2.03	0.38	0.84	29.92
1969	4.27	2.63	4.65	3.25	7.61	2.59	0.43	3.28	2.55	5.31	0.53	3.19	40.29
1968	4.21	1.41	6.94	5.42	3.62	3.32	2.90	2.24	6.36	2.78	3.65	1.81	44.66
1967	0.40	1.26	2.50	5.83	6.21	0.90	2.01	1.06	6.94	3.81	1.20	2.16	34.28
1966	1.20	2.65	1.07	11.98	2.70	3.70	0.73	5.47	3.19	1.19	0.52	1.20	35.60
1965	3.05	5.16	1.36	2.42	6.00	3.05	0.56	1.95	6.47	1.86	1.86	1.66	35.40
1964	M	1.38	4.15	3.72	7.58	0.67	1.77	5.47	15.56	0.65	7.19	1.28	NA
1963	0.44	0.06	1.20	4.45	2.48	0.35	1.93	0.17	0.67	0.00	0.99	1.17	13.91
1962	0.92	1.18	2.21	4.61	1.06	5.02	8.50	2.64	4.51	3.62	2.06	1.16	37.49
1961	3.44	2.84	3.35	0.87	1.34	5.96	4.53	0.00	3.57	2.51	3.26	2.39	34.06
1960	2.91	1.96	1.15	1.87	3.53	2.76	2.92	7.78	1.06	1.15	0.62	4.23	31.94
1959	0.30	1.41	0.92	1.72	3.31	5.70	7.53	1.00	1.37	10.28	0.75	2.65	36.94
1958	1.96	0.92	4.34	7.03	3.62	5.29	1.69	0.98	2.78	0.65	2.22	0.84	32.32
1957	1.03	2.54	4.89	13.08	10.19	1.67	0.34	0.44	4.28	2.68	4.90	1.82	47.86
1956	1.15	3.63	0.49	0.55	2.42	1.47	0.67	0.73	0.03	1.83	2.58	2.29	17.84
1955	1.15	2.53	3.14	1.92	4.71	3.82	0.19	0.48	2.72	0.00	0.00	0.76	21.42
1954	2.17	0.38	0.47	3.65	4.40	3.11	0.84	1.22	0.90	3.94	1.41	1.32	23.81
1953	0.49	1.61	2.98	5.05	2.92	0.69	0.75	1.56	2.03	3.62	2.95	1.38	26.03
1952	0.42	1.42	2.02	6.99	3.93	0.10	0.89	1.72	0.14	0.05	6.90	2.42	27.00
1951	1.09	2.12	1.01	2.04	3.74	5.64	2.77	1.73	2.50	2.37	1.67	0.42	27.10
1950	M	4.26	M	M	6.36	3.05	5.91	3.16	4.12	0.56	0.12	0.00	NA
1949							0.77	M	M	M	M	M	NA
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann