San Antonio Weather in 2020

Historical record of San Antonio, Texas weather for the year 2020 based on NOAA data.

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2020 San Antonio Weather Extremes
Highest temperature	107 °F	July 13
Lowest temperature	28 °F	December 1
Highest daily low	81 °F	July 8
Lowest daily high	45 °F	October 27
Most daily precipitation	2.1 inches	April 4
Most daily snow	none	-
Total annual precipitation	20.7 inches	-
Total annual snow	none	-

What was the hottest temperature in San Antonio in 2020?

The highest temperature recorded in San Antonio, Texas in 2020 was 107 °F which happened on July 13.

Highest Temperatures: All-Time By Year

Highest Temperatures in San Antonio in 2020

Rank	Temperature	Date
1	107 °F	Jul 13
2	105 °F	Jul 14
3	104 °F	Aug 28
3	104 °F	Aug 15
3	104 °F	Aug 14
6	103 °F	Aug 29
6	103 °F	Aug 19
6	103 °F	Aug 18
6	103 °F	Aug 16
6	103 °F	Jul 11
6	103 °F	Jul 10

What was the coldest temperature in San Antonio in 2020?

The lowest temperature recorded in San Antonio, Texas in 2020 was 28 °F which happened on Dec 1.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in San Antonio in 2020

Rank	Temperature	Date
1	28 °F	December 1
2	29 °F	February 27
3	31 °F	December 17
3	31 °F	February 6
5	33 °F	December 16
5	33 °F	December 4
7	34 °F	December 25
7	34 °F	December 15
7	34 °F	November 30
7	34 °F	February 26
7	34 °F	February 14
7	34 °F	February 7
7	34 °F	January 8

January 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	53	50	0.00
January 2	63	47	0.00
January 3	67	44	0.00
January 4	72	38	0.00
January 5	75	38	0.00
January 6	74	41	0.00
January 7	68	39	0.00
January 8	71	34	0.00
January 9	79	63	0.00
January 10	81	57	0.42
January 11	63	44	0.00
January 12	64	37	0.00
January 13	61	52	0.05
January 14	77	60	0.01
January 15	78	69	0.00
January 16	72	61	0.33
January 17	72	60	0.02
January 18	72	50	0.00
January 19	60	42	0.00
January 20	62	38	0.00
January 21	64	40	0.00
January 22	59	49	0.65
January 23	73	48	0.00
January 24	69	42	0.00
January 25	66	43	0.04
January 26	80	54	0.00
January 27	75	47	0.00
January 28	72	52	0.35
January 29	64	43	0.00
January 30	52	44	0.00
January 31	62	44	0.00

February 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	72	39	0.00
February 2	76	39	0.00
February 3	73	53	0.00
February 4	78	50	0.00
February 5	50	35	0.01
February 6	59	31	0.00
February 7	74	34	0.00
February 8	70	50	0.00
February 9	78	63	0.01
February 10	73	51	0.33
February 11	51	45	0.01
February 12	68	44	0.62
February 13	61	40	0.00
February 14	59	34	0.00
February 15	64	38	0.00
February 16	72	47	0.00
February 17	81	57	0.00
February 18	75	52	0.00
February 19	53	48	0.04
February 20	50	45	0.05
February 21	57	37	0.00
February 22	64	40	0.00
February 23	71	54	0.00
February 24	73	51	0.00
February 25	68	43	0.00
February 26	56	34	0.00
February 27	62	29	0.00
February 28	73	37	0.00
February 29	76	43	0.00

March 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	76	56	0.00
March 2	75	64	0.00
March 3	76	61	0.00
March 4	70	54	0.48
March 5	75	48	0.00
March 6	72	47	0.00
March 7	67	49	0.00
March 8	76	48	0.00
March 9	73	64	0.03
March 10	79	64	0.00
March 11	86	65	0.00
March 12	87	65	0.00
March 13	85	67	0.00
March 14	84	69	0.00
March 15	71	64	0.00
March 16	79	64	0.00
March 17	83	67	0.00
March 18	87	69	0.01
March 19	83	69	0.16
March 20	72	54	0.25
March 21	54	50	0.51
March 22	65	54	0.01
March 23	81	63	0.00
March 24	92	63	0.00
March 25	87	51	0.00
March 26	90	67	0.00
March 27	89	68	0.00
March 28	83	53	0.06
March 29	81	50	0.00
March 30	75	60	0.01
March 31	79	54	0.00

April 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	80	52	0.00
April 2	70	63	0.46
April 3	75	51	0.12
April 4	58	50	2.06
April 5	70	55	0.00
April 6	76	62	0.00
April 7	85	69	0.00
April 8	92	71	0.00
April 9	89	67	0.00
April 10	74	65	0.00
April 11	79	64	0.00
April 12	86	61	0.03
April 13	70	46	0.00
April 14	68	47	0.00
April 15	68	45	0.00
April 16	76	47	0.00
April 17	75	57	0.01
April 18	62	53	0.00
April 19	94	59	0.01
April 20	93	53	0.00
April 21	88	63	0.00
April 22	84	68	0.03
April 23	92	61	0.00
April 24	98	57	0.00
April 25	85	65	0.00
April 26	87	53	0.00
April 27	90	61	0.00
April 28	92	66	0.17
April 29	87	60	0.00
April 30	89	53	0.00

May 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	92	58	0.00
May 2	95	68	0.00
May 3	96	70	0.00
May 4	97	71	0.00
May 5	91	73	0.00
May 6	87	69	0.00
May 7	91	60	0.00
May 8	89	67	0.00
May 9	78	63	0.00
May 10	83	57	0.00
May 11	86	60	0.00
May 12	88	67	0.20
May 13	92	66	0.00
May 14	93	65	0.46
May 15	93	65	0.91
May 16	88	63	0.16
May 17	93	65	0.00
May 18	94	67	0.00
May 19	96	72	0.00
May 20	97	71	0.03
May 21	93	72	0.00
May 22	96	77	0.00
May 23	96	69	0.09
May 24	95	65	1.93
May 25	80	65	0.71
May 26	87	65	0.00
May 27	92	65	1.25
May 28	89	66	0.03
May 29	89	68	0.00
May 30	87	65	0.00
May 31	84	71	0.06

June 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	83	71	0.08
June 2	87	70	0.01
June 3	90	74	0.00
June 4	91	75	0.00
June 5	91	76	0.00
June 6	93	72	0.00
June 7	94	73	0.00
June 8	97	75	0.00
June 9	98	77	0.00
June 10	93	73	0.00
June 11	95	63	0.00
June 12	93	63	0.00
June 13	92	71	0.00
June 14	91	65	0.00
June 15	93	71	0.00
June 16	93	74	0.00
June 17	94	70	0.00
June 18	93	76	0.24
June 19	95	77	0.00
June 20	96	77	0.01
June 21	97	78	0.00
June 22	98	78	0.00
June 23	96	71	0.07
June 24	92	70	0.00
June 25	95	72	0.00
June 26	85	71	0.45
June 27	92	77	0.00
June 28	92	80	0.00
June 29	91	79	0.00
June 30	96	79	0.00

July 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	97	80	0.00
July 2	99	79	0.00
July 3	99	76	0.00
July 4	101	75	0.00
July 5	102	76	0.00
July 6	98	78	0.00
July 7	99	80	0.00
July 8	100	81	0.00
July 9	99	80	0.00
July 10	103	79	0.00
July 11	103	78	0.00
July 12	102	78	0.00
July 13	107	79	0.00
July 14	105	76	0.00
July 15	102	78	0.00
July 16	101	78	0.00
July 17	101	77	0.00
July 18	97	73	0.00
July 19	99	75	0.00
July 20	99	75	0.00
July 21	98	76	0.00
July 22	100	80	0.00
July 23	101	78	0.00
July 24	101	78	0.00
July 25	93	78	0.00
July 26	95	76	0.09
July 27	97	77	0.00
July 28	99	78	0.00
July 29	97	75	0.00
July 30	97	75	0.00
July 31	99	73	0.07

August 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	99	72	0.00
August 2	99	72	0.02
August 3	100	73	0.51
August 4	98	74	0.00
August 5	99	77	0.00
August 6	99	77	0.00
August 7	100	77	0.00
August 8	100	78	0.00
August 9	100	78	0.00
August 10	100	79	0.00
August 11	100	79	0.00
August 12	102	78	0.00
August 13	102	78	0.00
August 14	104	78	0.00
August 15	104	79	0.00
August 16	103	78	0.00
August 17	99	77	0.00
August 18	103	77	0.00
August 19	103	73	0.00
August 20	100	74	0.00
August 21	101	74	0.00
August 22	90	71	0.37
August 23	95	69	0.00
August 24	98	73	0.00
August 25	100	73	0.00
August 26	98	77	0.00
August 27	100	76	0.00
August 28	104	79	0.00
August 29	103	79	0.00
August 30	100	78	0.00
August 31	101	79	0.00

September 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	100	78	0.00
September 2	95	78	0.00
September 3	99	75	0.18
September 4	85	74	0.00
September 5	93	75	0.00
September 6	95	74	0.00
September 7	94	73	0.00
September 8	94	73	0.52
September 9	87	60	1.14
September 10	72	57	0.60
September 11	89	63	0.00
September 12	93	69	0.00
September 13	95	75	0.00
September 14	93	75	0.00
September 15	92	75	0.00
September 16	93	74	0.00
September 17	90	73	0.06
September 18	89	72	0.00
September 19	86	67	0.00
September 20	87	62	0.01
September 21	75	68	0.58
September 22	82	69	0.00
September 23	83	67	0.00
September 24	86	62	0.00
September 25	88	62	0.00
September 26	91	70	0.00
September 27	93	76	0.00
September 28	80	65	0.00
September 29	84	53	0.00
September 30	87	51	0.00

October 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	90	54	0.00
October 2	84	62	0.00
October 3	86	56	0.00
October 4	90	60	0.00
October 5	89	63	0.00
October 6	89	65	0.00
October 7	91	63	0.00
October 8	89	60	0.00
October 9	92	71	0.00
October 10	97	67	0.00
October 11	97	65	0.00
October 12	93	72	0.00
October 13	90	66	0.00
October 14	92	66	0.00
October 15	89	68	0.00
October 16	78	64	0.00
October 17	74	59	0.03
October 18	92	69	0.00
October 19	92	73	0.00
October 20	91	73	0.02
October 21	89	73	0.00
October 22	90	73	0.00
October 23	88	56	0.00
October 24	70	54	0.00
October 25	85	56	0.02
October 26	84	45	0.05
October 27	45	41	0.03
October 28	67	40	0.08
October 29	68	42	0.00
October 30	71	45	0.00
October 31	77	41	0.00

November 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	82	49	0.00
November 2	77	48	0.00
November 3	80	43	0.00
November 4	80	47	0.00
November 5	81	55	0.00
November 6	78	55	0.00
November 7	80	56	0.00
November 8	83	61	0.00
November 9	84	67	0.00
November 10	74	64	0.00
November 11	83	59	0.00
November 12	83	62	0.00
November 13	82	60	0.00
November 14	86	69	0.00
November 15	75	54	0.00
November 16	76	45	0.00
November 17	76	44	0.00
November 18	78	42	0.00
November 19	80	53	0.00
November 20	81	55	0.00
November 21	80	62	0.00
November 22	81	64	0.00
November 23	73	55	0.00
November 24	83	65	0.06
November 25	78	52	0.00
November 26	74	48	0.00
November 27	73	60	0.10
November 28	60	52	1.31
November 29	62	43	0.00
November 30	58	34	0.00

December 2020 San Antonio Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	62	28	0.00
December 2	70	43	0.00
December 3	58	36	0.00
December 4	60	33	0.00
December 5	52	37	0.01
December 6	70	38	0.00
December 7	73	38	0.00
December 8	80	38	0.00
December 9	80	41	0.00
December 10	75	40	0.00
December 11	75	54	0.01
December 12	66	50	0.00
December 13	77	43	0.00
December 14	55	36	0.00
December 15	65	34	0.00
December 16	63	33	0.00
December 17	61	31	0.00
December 18	64	36	0.00
December 19	74	44	0.03
December 20	74	38	0.00
December 21	74	38	0.00
December 22	75	45	0.00
December 23	76	50	0.00
December 24	58	36	0.00
December 25	71	34	0.00
December 26	69	37	0.00
December 27	75	44	0.00
December 28	78	53	0.00
December 29	76	64	0.00
December 30	72	46	0.22
December 31	46	36	0.54

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Weather Station Details

Years	Station	Coordinates
1947–2024	San Antonio International Airport	location
1893–1946	San Antonio Nursery	location