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San Marcos October Weather

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

Typical San Marcos October Weather 1991–2020
Average daily high	82.5 °F
Average daily low	58.4 °F
Average monthly precipitation	4.3 inches
Average monthly snow	none
Daily chance of precipitation	19.2%
Daily chance of snow	0%

San Marcos October Weather Records 1893–2024
Highest temperature	101 °F	October 2, 1938
Lowest temperature	27 °F	October 30, 1917
Highest daily low	78 °F	October 5, 1998
Lowest daily high	43 °F	October 28, 2020
Hottest average high temperature	92.7 °F	1947
Coldest average high temperature	72.4 °F	1976
Most daily precipitation	15.8 inches	October 17, 1998
Most monthly precipitation	25.3 inches	1998
Most daily snow	none	-
Most monthly snow	none	-

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

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
October 1	86.9	63.5	99	37
October 2	86.6	63.1	101	45
October 3	86.3	62.7	98	43
October 4	86.0	62.3	101	42
October 5	85.7	61.9	98	42
October 6	85.5	61.5	99	38
October 7	85.3	61.2	100	38
October 8	85.1	60.9	97	34
October 9	84.8	60.6	99	34
October 10	84.5	60.3	101	36
October 11	84.2	60.0	99	41
October 12	83.9	59.7	98	42
October 13	83.6	59.4	97	37
October 14	83.3	59.1	95	38
October 15	82.9	58.8	97	39
October 16	82.5	58.5	95	39
October 17	82.2	58.2	98	39
October 18	81.8	57.8	94	40
October 19	81.3	57.4	94	36
October 20	80.9	56.9	97	33
October 21	80.5	56.5	97	33
October 22	80.1	56.2	95	38
October 23	79.8	55.9	93	35
October 24	79.5	55.6	97	36
October 25	79.2	55.2	93	32
October 26	78.8	54.9	92	33
October 27	78.5	54.6	94	33
October 28	78.1	54.3	97	33
October 29	77.8	53.9	93	33
October 30	77.3	53.6	92	27
October 31	76.8	53.3	91	28

Weather Station Details

Years	Station	Coordinates
1893–2024	San Marcos	location