San Antonio Climate Summary

All average climate data contains the latest 30 year normals, 1971-2000. The highest and lowest temperatures are all time highs and lows for the climate period of record. All average values of climate data on this page are rounded off to the nearest whole number. For more complete climate information, you can obtain an official record from the National Climate Data Center, in Asheville, North Carolina. Telephone Number 1-828-271-4800.
Internet:  http://lwf.ncdc.noaa.gov/oa/ncdc.html
 
 

Month	High	Low	All time High	All time Low	Average Rainfall	All Time Driest	All Time Wettest
January	62.1	38.6	89	0	1.66	Trace	8.52
February	67.1	42.4	100	4	1.75	Trace	7.88
March	74.3	49.9	100	19	1.89	Trace	6.12
April	80.4	56.9	101	31	2.60	0.05	11.64
May	86.0	65.5	104	43	4.72	0.17	14.07
June	91.4	71.6	107	48	4.30	Trace	11.95
July	94.6	74.0	106	60	2.03	0	16.82
August	94.7	73.6	108	57	2.57	0	11.14
September	90.0	68.8	111	41	3.00	0.01	15.78
October	82.0	59.4	99	27	3.86	Trace	18.07
November	71.4	48.6	94	21	2.58	0	9.16
December	64.0	40.8	90	6	1.96	0	13.96

Freeze Data - 1885 to 2001

• Earliest Freeze of Record - October 30, 1917
• Latest Freeze of Record - April 3, 1987
• Average Date of First Freeze - December 1st
• Average Date of Last Freeze - Feb 25