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San Marcos March Weather

Averages and records for weather in San Marcos, Texas in the month of March.

Typical San Marcos March Weather 1991–2020
Average daily high	73.6 °F
Average daily low	50.8 °F
Average monthly precipitation	2.7 inches
Average monthly snow	none
Daily chance of precipitation	26.1%
Daily chance of snow	0%

San Marcos March Weather Records 1893–2024
Highest temperature	100 °F	March 30, 1925
Lowest temperature	17 °F	March 2, 1980
Highest daily low	76 °F	March 21, 1907
Lowest daily high	32 °F	March 7, 1920
Hottest average high temperature	83.3 °F	1916
Coldest average high temperature	64.2 °F	1915
Most daily precipitation	4.4 inches	March 28, 2018
Most monthly precipitation	9.4 inches	1921
Most daily snow	5.0 inches	March 3, 1965
Most monthly snow	5.0 inches	1965

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
March 1	70.5	45.8	88	20
March 2	70.7	46.1	89	17
March 3	70.9	46.5	90	19
March 4	71.2	46.9	90	19
March 5	71.4	47.2	92	19
March 6	71.5	47.4	97	20
March 7	71.7	47.5	90	24
March 8	71.8	47.6	95	26
March 9	72.0	47.9	91	25
March 10	72.2	48.3	92	25
March 11	72.4	48.6	93	20
March 12	72.5	48.9	93	20
March 13	72.8	49.2	94	20
March 14	73.1	49.6	93	25
March 15	73.4	50.0	94	29
March 16	73.7	50.2	90	29
March 17	73.9	50.5	89	26
March 18	74.2	50.8	90	30
March 19	74.4	51.1	94	25
March 20	74.7	51.5	89	19
March 21	74.8	51.8	96	21
March 22	74.9	52.0	92	29
March 23	75.0	52.1	96	27
March 24	75.3	52.2	97	26
March 25	75.6	52.5	91	32
March 26	75.9	52.7	97	28
March 27	76.1	53.0	96	28
March 28	76.3	53.3	94	25
March 29	76.5	53.5	99	28
March 30	76.8	53.7	100	32
March 31	77.0	53.8	94	27

Weather Station Details

Years	Station	Coordinates
1893–2024	San Marcos	location