Weather & Climate at Joint Base San Antonio

San Antonio, TX

Summary of the weather and climate in San Antonio, TX:

The average high is 79.5°F and the average low is 57.3°F.
The hottest month is August with a high of 94.8°F.
The coldest month is January with a low of 39.6°F.
Annual rainfall is 34.86 inches; the rainiest month is June (4.49 in).

Source: NOAA climate normals.

Temperatures through the year

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Bars span each month's average low to average high (30°F – 100°F scale).

Monthly averages

Month	High (°F)	Low (°F)	Rain (in)	Snow (in)
January	62.7	39.6	1.93	0
February	66.8	42.1	1.98	0
March	73	49.7	2.34	0
April	80.2	56.7	1.99	0
May	85.6	65.5	4.45	0
June	91.1	71.6	4.49	0
July	93.6	73.5	2.71	0
August	94.8	73.5	2.34	0
September	89.8	68.1	3.33	0
October	81.4	58.6	4.45	0
November	71.9	48.9	2.72	0
December	63.5	39.7	2.13	0