Weather in San Antonio in December
In an average December, San Antonio sees a daily high around 65°F and a low around 46°F, based on 1980–2026 of local climate records.
| Average high | 65°F |
|---|---|
| Typical high range | 52°F to 76°F |
| Average low | 46°F |
| Typical low range | 33°F to 60°F |
| Average daily precipitation | 0.10 in |
December records
The most extreme December on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
84°F
2024-12-30
Lowest
28°F
1983-12-25
Low
Highest
71°F
1982-12-02
Lowest
8°F
1989-12-23
Feels-like
Highest
92°F
2021-12-10
Lowest
-8°F
1989-12-23
Humidity
Highest
19.0 g/m³
1994-12-07
Lowest
1.0 g/m³
1989-12-23
Wind
Highest
25 mph
2009-12-24
Lowest
3 mph
2008-12-17
Gust
Highest
48 mph
2009-12-24
Lowest
8 mph
2008-12-17
Precip
Wettest
13.42 in
1991
Driest
0.36 in
1989
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