Weather in San Antonio in March
March in San Antonio is mild with average temperatures around 17.3°C (63.1°F). Moderate rainfall of 62mm spread over 7 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
24.0°C
75.2°F
Low
10.5°C
50.9°F
Precipitation
62 mm
2.4 inches
~7 rainy days
Conditions
Humidity
70%
Comparison to Adjacent Months
March is 4.3°C warmer than February, 26mm wetter than February.
March is 4.2°C cooler than April.