As of 01:58 CDT

San Antonio, TX weather in September

80°

San Antonio, Sunday, 9 August, 01:58

Clear. Feels like 85°. High 97°, low 75°.

Pressure30.03 inHg

Wind7 mph N

Humidity80%

Visibility6.2 mi

Dew point74°

See detailed hourly forecast

In September, San Antonio, TX averages a high of 88.4° and a low of 71.1°. About 3.1 inches of precipitation fall over the month (9 wet days). The record high is 108.3° (2000) and the record low 50.5° (1967). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	91.9°	74.3°	35%	102.2° (2000)	69.3° (1969)
2	92.1°	74.5°	27%	103.3° (2000)	66.9° (1987)
3	91.4°	74.3°	38%	102.9° (2000)	64.2° (1974)
4	91.4°	74.1°	33%	106.5° (2000)	61.7° (1974)
5	91.2°	73.6°	32%	108.3° (2000)	57.9° (1974)
6	90.5°	73.2°	25%	99.9° (2000)	56.8° (1974)
7	89.8°	72.7°	32%	100.2° (2012)	60.4° (1974)
8	89.6°	72.7°	35%	101.5° (2023)	63.3° (2017)
9	89.4°	72.5°	38%	98.6° (1963)	63.5° (2024)
10	89.1°	72°	37%	99.5° (1965)	59.4° (2020)
11	88.3°	72°	37%	99.1° (2000)	61.5° (1968)
12	89.1°	72.1°	35%	100° (2011)	61.5° (1968)
13	88.5°	72.3°	37%	100.6° (2011)	65.3° (2014)
14	88.3°	72.1°	37%	98.6° (1965)	63.3° (1961)
15	88°	72°	38%	98.2° (1965)	61.7° (1989)
16	88.2°	72°	40%	99.1° (1965)	61.5° (1989)
17	88.7°	71.4°	28%	98.2° (2005)	60.4° (1961)
18	88.7°	71.8°	27%	97.2° (2005)	56.7° (1968)
19	88.2°	71.4°	35%	97.9° (1995)	51.8° (1981)
20	87.6°	70.7°	28%	97.2° (2021)	55.8° (1981)
21	87.1°	70.7°	37%	97.7° (2005)	57.7° (1983)
22	86.7°	69.6°	30%	99.1° (2005)	52.2° (1983)
23	86.4°	69.1°	27%	99° (2023)	53.6° (1995)
24	86.7°	68.7°	22%	101.5° (2005)	55.8° (1983)
25	86.9°	68.2°	22%	104.7° (2005)	54.9° (2000)
26	86.5°	68°	27%	103.3° (2005)	54° (2000)
27	86°	67.6°	18%	101.7° (2005)	53.8° (2000)
28	85.8°	67.6°	22%	102.6° (2005)	52.9° (1967)
29	85.3°	66°	25%	95.2° (2011)	50.5° (1967)
30	85.1°	65.3°	15%	96.1° (1977)	52.3° (1984)