Weather in San Antonio, Texas, United States in May
In an average May, San Antonio sees a daily high around 89°F and a low around 66°F, based on 1981–2026 of local climate records.
| Average high | 89°F |
|---|---|
| Typical high range | 79°F to 99°F |
| Average low | 66°F |
| Typical low range | 58°F to 72°F |
| Average daily precipitation | 0.10 in |
May records
The most extreme May on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
109°F
1984-05-05
Lowest
62°F
1994-05-01
Low
Highest
79°F
2024-05-27
Lowest
43°F
2013-05-04
Feels-like
Highest
152°F
2025-05-14
Lowest
35°F
2013-05-03
Humidity
Highest
23.0 g/m³
2024-05-09
Lowest
4.3 g/m³
1984-05-09
Wind
Highest
31 mph
2014-05-13
Lowest
5 mph
2025-05-31
Precip
Wettest
11.07 in
2015
Driest
0.42 in
2003
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