| Climate data for San Antonio (San Antonio Int'l), 1991–2020 normals,[a] extremes 1885–present[b] | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 89 (32) |
100 (38) |
100 (38) |
101 (38) |
104 (40) |
108 (42) |
107 (42) |
110 (43) |
111 (44) |
99 (37) |
94 (34) |
90 (32) |
111 (44) |
| Mean maximum °F (°C) | 80.3 (26.8) |
84.9 (29.4) |
88.9 (31.6) |
92.2 (33.4) |
96.0 (35.6) |
98.9 (37.2) |
100.5 (38.1) |
102.1 (38.9) |
98.7 (37.1) |
93.1 (33.9) |
85.1 (29.5) |
80.6 (27.0) |
103.8 (39.9) |
| Mean daily maximum °F (°C) | 63.3 (17.4) |
67.5 (19.7) |
73.8 (23.2) |
80.3 (26.8) |
86.6 (30.3) |
92.4 (33.6) |
94.9 (34.9) |
96.0 (35.6) |
90.1 (32.3) |
82.2 (27.9) |
71.7 (22.1) |
64.7 (18.2) |
80.3 (26.8) |
| Daily mean °F (°C) | 52.2 (11.2) |
56.3 (13.5) |
62.8 (17.1) |
69.4 (20.8) |
76.5 (24.7) |
82.6 (28.1) |
84.8 (29.3) |
85.5 (29.7) |
79.9 (26.6) |
71.3 (21.8) |
60.7 (15.9) |
53.5 (11.9) |
69.6 (20.9) |
| Mean daily minimum °F (°C) | 41.0 (5.0) |
45.1 (7.3) |
51.8 (11.0) |
58.4 (14.7) |
66.4 (19.1) |
72.7 (22.6) |
74.7 (23.7) |
74.9 (23.8) |
69.6 (20.9) |
60.4 (15.8) |
49.8 (9.9) |
42.4 (5.8) |
58.9 (14.9) |
| Mean minimum °F (°C) | 26.2 (−3.2) |
29.0 (−1.7) |
33.7 (0.9) |
41.6 (5.3) |
53.1 (11.7) |
65.3 (18.5) |
70.2 (21.2) |
69.4 (20.8) |
57.4 (14.1) |
41.8 (5.4) |
32.2 (0.1) |
27.4 (−2.6) |
23.5 (−4.7) |
| Record low °F (°C) | 0 (−18) |
4 (−16) |
19 (−7) |
31 (−1) |
42 (6) |
48 (9) |
60 (16) |
57 (14) |
41 (5) |
27 (−3) |
21 (−6) |
6 (−14) |
0 (−18) |
| Average precipitation inches (mm) | 1.96 (50) |
1.74 (44) |
2.31 (59) |
2.42 (61) |
4.40 (112) |
3.28 (83) |
2.41 (61) |
2.15 (55) |
3.88 (99) |
3.75 (95) |
2.08 (53) |
2.00 (51) |
32.38 (822) |
| Average snowfall inches (cm) | 0.0 (0.0) |
0.1 (0.25) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.25) |
0.2 (0.51) |
| Average precipitation days (≥ 0.01 in) | 6.9 | 7.4 | 8.5 | 6.4 | 8.3 | 7.0 | 5.0 | 4.7 | 6.9 | 6.4 | 6.4 | 7.4 | 81.3 |
| Average snowy days (≥ 0.1 in) | 0.0 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 |
| Average relative humidity (%) | 67.1 | 65.2 | 63.2 | 66.3 | 70.5 | 68.8 | 65.0 | 64.7 | 68.0 | 67.2 | 68.3 | 68.0 | 66.9 |
| Average dew point °F (°C) | 37.0 (2.8) |
39.9 (4.4) |
46.8 (8.2) |
55.6 (13.1) |
63.7 (17.6) |
68.4 (20.2) |
68.9 (20.5) |
68.5 (20.3) |
65.7 (18.7) |
57.0 (13.9) |
48.0 (8.9) |
40.1 (4.5) |
55.0 (12.8) |
| Mean monthly sunshine hours | 159.4 | 169.7 | 215.5 | 209.7 | 221.8 | 275.9 | 308.8 | 293.9 | 234.9 | 218.0 | 171.9 | 149.7 | 2,629.2 |
| Percent possible sunshine | 49 | 54 | 58 | 54 | 52 | 66 | 72 | 72 | 63 | 61 | 54 | 47 | 59 |
| Source: NOAA (relative humidity, dew point and sun 1961–1990)[1][2][3] | |||||||||||||
Notes
edit- ^ Mean monthly maxima and minima (i.e., the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.
- ^ Official records for San Antonio were kept at downtown from March 1885 to December 1940, at Stinson Municipal Airport from January 1941 to June 1942, and at San Antonio Int'l since July 1942. For more information, see Threadex
References
edit- ^ "NowData − NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved 2021-05-31.
- ^ "Station Name: TX SAN ANTONIO INTL AP". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991−2020). National Oceanic & Atmospheric Administration. Archived from the original on 2023-12-25. Retrieved 2021-05-31.
- ^ "WMO Climate Normals for SAN ANTONIO/INTL, TX 1961–1990". National Oceanic and Atmospheric Administration. Archived from the original on 2023-12-25. Retrieved 2020-07-19.