Lavon Dam Climatology

Heavy Rain and Flash Flooding Threat in Montana; Severe Thunderstorms in the Middle Missouri Valley

A low pressure system will bring heavy to excessive rainfall and high winds across Montana this afternoon. Heavy rainfall totals may lead to scattered flash flooding concerns. A line of showers and strong to severe thunderstorms will move into the mid Missouri Valley region this afternoon producing severe winds and isolated large hail with stronger storms. Read More >

Lavon Dam (Collin County)

33º 02' N 96º 29' W

510 ft

30 Year Normals (1991-2020)
Month		Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
N o r m a l	Maximum (°F)	53.7	58.2	65.1	73.0	80.2	88.3	92.4	93.3	86.7	76.7	64.7	56.1	74.0
	Minimum (°F)	34.2	38.1	46.4	53.4	62.6	70.3	73.2	73.0	65.9	54.8	44.6	36.0	54.4
	Precipitation (in.)	2.58	2.71	3.54	3.68	4.74	4.13	1.87	2.15	3.10	4.42	3.42	3.45	39.79
Monthly Precipitation
Year		Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
2024		3.11	1.75	5.93	8.31	9.75	4.57	1.17	1.55
2023		1.31	4.82	2.65	2.10	3.55	3.20	2.93	0.00	1.24	9.22	0.89	4.39	36.30
2022		0.22	2.26	2.92	3.59	4.71	1.91	0.30	2.54	1.25	5.38	7.03	2.29	34.40
2021		3.82	2.09	2.22	3.51	6.31	6.07	1.45	3.63	0.21	4.18	2.77	0.77	37.03
2020		2.39	3.39	7.81	1.53	3.52	4.02	2.33	1.54	5.25	1.63	0.92	4.62	38.95
2019		2.33	1.75	3.43	14.37	10.07	5.56	1.07	2.21	0.55	6.92	1.74	1.30	51.30
2018		1.20	7.96	4.26	1.87	2.50	2.35	1.59	2.63	13.25	10.42	2.11	5.66	55.80
2017		2.43	2.03	1.21	4.73	1.53	7.46	2.81	7.20	0.79	1.77	0.86	4.65	37.47
2016		1.15	1.81	4.98	6.97	4.90	5.00	2.36	1.56	2.83	1.95	4.02	3.84	41.37
2015		3.41	3.59	3.44	6.41	8.96	9.51	0.35	0.56	0.69	9.85	13.73	5.28	65.78
2014		0.10	0.31	1.39	1.72	4.40	2.91	5.28	2.29	0.29	3.70	1.22	2.02	25.78
2013		4.16	1.50	1.91	2.99	6.06	2.67	1.66	0.37	3.86	1.42	2.66	2.16	31.42
2012		6.47	1.98	5.75	1.63	3.99	4.65	1.01	5.45	1.97	1.39	0.03	1.18	35.50
2011		2.16	1.18	0.04	4.56	5.86	1.15	0.00	0.19	1.51	3.34	2.45	5.85	28.29
2010		3.04	3.96	3.36	1.45	1.46	1.20	1.72	0.49	6.86	2.33	3.30	2.01	31.18
2009		1.56	0.84	5.04	4.24	8.44	2.94	3.91	2.94	8.37	8.25	3.32	2.58	52.43
2008		0.49	3.01	7.83	4.72	3.89	2.36	0.13	3.86	3.80	1.00	2.81	0.58	34.48
2007		5.95	0.41	4.17	2.67	8.98	12.87	3.77	2.17	3.51	4.91	1.22	2.02	52.65
2006		2.35	2.96	5.29	1.50	1.36	1.05	0.77	2.24	1.91	5.20	2.35	3.90	30.88
2005		4.15	1.72	2.36	0.52	3.98	1.17	1.70	1.01	0.76	0.06	0.90	0.39	18.72
2004		3.37	5.08	2.45	2.83	2.16	7.58	3.58	2.95	1.28	3.49	7.50	0.66	42.93
2003		0.17	3.15	1.26	4.00	2.70	7.24	0.40	1.55	3.50	0.52	1.60	1.43	27.52
2002		3.59	1.51	5.33	3.69	4.21	1.12	4.47	1.71	1.71	7.69	0.47	4.32	39.82
2001		2.65	5.43	6.38	1.82	4.30	1.24	0.81	3.79	6.59	2.96	0.97	5.05	41.99
2000		2.03	2.29	3.55	2.88	5.53	14.59	0.19	0.00	0.91	5.55	9.33	3.99	50.84
1999		2.45	1.07	3.17	1.68	9.78	1.57	M	0.11	1.81	3.55	1.05	M	NA
1998		5.48	3.17	3.81	1.52	1.83	1.70	0.36	0.48	3.92	4.92	5.58	5.35	40.62
1997		1.16	8.64	3.70	7.12	2.16	4.66	1.61	3.24	0.26	4.96	3.02	6.56	47.09
1996		1.48	0.30	2.05	2.42	1.24	2.87	1.78	4.76	3.70	7.27	6.83	1.02	35.72
1995		4.05	1.31	7.17	6.07	5.48	2.16	2.75	1.26	4.06	0.89	1.22	2.28	38.70
1994		1.44	1.86	2.59	3.85	7.08	2.50	5.98	1.60	3.76	8.59	6.86	2.64	48.75
1993		2.50	4.17	2.70	5.73	2.36	3.20	0.00	1.18	3.68	7.34	1.51	3.96	38.33
1992		3.46	2.43	3.05	1.20	7.42	7.84	1.69	1.37	3.93	2.01	3.56	4.03	41.99
1991		3.97	2.74	1.27	7.85	3.49	4.73	1.46	4.36	2.35	9.64	2.39	8.57	52.82
1990		5.27	4.83	5.53	7.52	7.01	5.64	0.97	2.32	2.48	2.84	5.38	1.78	51.57
1989		3.41	4.66	2.10	1.61	9.00	10.18	4.00	1.42	2.74	1.67	0.73	0.56	42.08
1988		0.70	1.08	2.12	3.92	0.86	M	2.78	1.13	4.48	1.01	2.52	2.73	NA
1987		1.49	4.44	3.54	0.31	6.06	3.49	3.18	0.43	4.23	0.73	5.79	3.88	37.57
1986		M	2.78	0.73	9.56	6.73	5.94	0.61	1.48	2.58	3.76	4.09	2.48	NA
1985		1.39	3.22	3.94	5.54	6.73	2.85	3.06	0.02	2.70	6.07	5.07	2.81	43.40
1984		1.45	2.54	7.58	1.58	3.83	2.72	1.27	0.95	3.39	M	3.09	5.69	NA
1983		0.56	6.73	3.20	0.45	7.40	4.62	2.96	1.63	0.59	5.18	3.26	1.01	37.59
1982		2.22	1.86	1.62	2.88	12.75	6.02	1.81	3.15	2.18	3.76	4.30	5.54	48.09
1981		0.77	1.20	4.18	1.98	6.34	7.47	3.67	2.10	2.41	12.43	M	M	NA
1980		4.30	1.29	1.28	M	2.02	2.43	0.38	0.09	7.28	1.67	1.53	2.00	NA
1979		4.37	2.47	7.03	1.86	10.44	0.86	3.36	3.40	1.75	M	0.92	3.15	NA
1978		1.98	3.30	2.64	1.53	6.55	1.54	0.11	2.92	3.44	0.13	4.52	2.20	30.86
1977		2.38	2.41	M	5.14	1.08	1.22	0.02	3.42	4.04	0.35	M	0.83	NA
1976		0.32	1.02	4.88	4.77	6.37	2.11	6.67	0.69	3.07	3.74	0.61	2.55	36.80
Year		Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
1975		2.28	3.74	1.97	2.92	7.33	3.84	3.10	2.27	0.60	0.11	1.66	1.31	31.13
1974		2.27	1.16	1.41	5.98	3.05	5.73	2.33	5.72	8.67	4.95	3.74	2.92	47.93
1973		3.07	3.00	4.03	5.24	3.52	7.38	4.07	0.75	9.77	8.55	1.60	2.42	53.40
1972		1.08	0.33	1.28	2.70	1.86	1.80	0.09	0.45	1.36	5.76	3.26	M	NA
1971		0.39	1.99	0.61	1.22	2.90	0.55	4.81	3.06	2.52	10.51	1.30	8.37	38.23
1970		0.64	6.81	5.08	4.36	5.58	3.08	0.40	3.71	7.56	3.83	0.54	1.04	42.63
1969		3.28	2.75	4.99	2.77	8.27	0.71	0.16	0.79	2.44	4.67	0.94	4.16	35.93
1968		3.41	2.01	6.31	3.77	7.01	3.96	2.77	0.53	5.50	0.70	3.54	1.90	41.41
1967		0.78	1.11	2.11	4.92	7.46	1.09	4.06	0.07	11.09	5.98	1.32	3.43	43.42
1966		1.76	2.67	2.10	15.49	3.43	3.04	5.17	3.91	4.48	1.94	0.36	1.97	46.32
1965		2.86	5.82	1.18	2.12	10.00	2.05	0.31	0.21	5.27	0.75	2.30	1.49	34.36
1964		2.11	1.42	4.73	3.30	5.61	2.07	0.05	4.96	11.66	0.66	5.38	1.02	42.97
1963		0.51	0.17	1.09	5.69	4.24	0.88	3.68	0.43	1.65	0.05	1.54	1.76	21.69
1962		1.46	2.63	1.66	5.20	2.26	8.70	3.06	0.91	9.47	5.75	3.31	1.03	45.44
1961		2.59	1.92	3.53	0.44	3.17	4.61	3.15	0.62	3.44	2.23	3.95	3.43	33.08
1960		3.22	2.58	1.45	2.41	3.73	2.72	3.29	4.15	1.94	2.78	0.75	7.77	36.79
1959		0.15	3.30	2.34	1.59	2.01	3.74	11.46	1.27	1.45	7.16	2.42	4.75	41.64
1958		1.90	0.71	5.42	7.84	3.43	2.83	3.32	1.38	7.56	0.65	1.91	0.65	37.60
1957		1.97	1.58	3.75	10.76	11.69	1.80	0.00	2.19	3.77	4.47	5.38	1.88	49.24
1956		1.83	3.68	0.22	3.08	3.92	1.13	0.83	0.99	0.00	1.62	4.80	1.55	23.65
1955		1.81	2.71	2.37	1.62	4.01	2.63	1.33	1.00	2.85	2.33	0.44	0.90	24.00
1954		4.31	1.10	0.65	5.58	4.89	1.60	0.80	1.66	2.37	5.81	1.56	0.63	30.96
1953		0.98	1.15	4.81	4.99	3.31	0.04	1.67	1.95	1.77	3.13	3.50	2.11	29.41
1952		1.19	1.90	2.54	7.29	5.51	1.07	0.54	1.76	0.22	0.15	7.90	3.54	33.61
1951		1.98	2.68	1.26	2.93	3.42	5.57	2.87	0.26	2.66	2.41	1.04	0.41	27.49
1950		4.29	4.88	2.16	4.37	6.31	3.03	7.70	4.31	2.87	0.63	0.21	0.06	40.82
1949								0.38	1.07	2.06	7.14	0.20	1.89	NA
Year		Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann

Location below

Map of the Lavon Dam region

Map from tiger.census.gov