Weather Averages for San Marcos, TX

7-day Forecast / 10-day Forecast

Latitude: 29°51'N, Longitude: 97°57'W, Elevation: 612.0 ft, Distance: 1.28 mi San Marcos, TX Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 30 years	°F	67	48	52	60	68	74	80	83	83	78	69	59	51
Average high temperature over 30 years	°F	79	60	64	73	80	85	91	94	95	89	81	71	63
Average low temperature over 30 years	°F	55	36	39	47	56	64	69	71	71	66	56	46	38
Average precipitation over 30 years	in	34.6	2.0	2.3	1.8	2.8	5.0	4.2	2.1	2.3	3.7	3.1	3.1	2.1
Heating degree days over 30 years	days	1818	531	369	195	42	-	-	-	-	-	34	208	439
Cooling degree days over 30 years	days	2712	7	7	46	141	304	462	564	570	399	164	40	8

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