San Antonio, TX weather in March
In March, San Antonio sees highs around 74°F and lows around 52°F: mild, with some rain. Rain falls on about 9 days. Good for outdoor plans.
- Normal high
- 74°F
- Normal low
- 52°F
- Wet days
- 9
- 2.3 in total
- Muggy days
- 2
- dew point 65°F+
How March changes from start to finish
| March 1 | March 31 | |
|---|---|---|
| Normal high | 70°F | 77°F |
| Normal low | 48°F | 55°F |
| Chance of a wet day | 27% | 25% |
| Sunrise / sunset | 6:59 am / 6:33 pm | 7:24 am / 7:51 pm |
| Daylight | 11.6 h | 12.4 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical March day
- 6 am56°Fdew point 50°F
- 9 am61°Fdew point 52°F
- Noon69°Fdew point 52°F
- 3 pm73°Fdew point 51°F
- 6 pm71°Fdew point 50°F
- 9 pm64°Fdew point 51°F
NOAA hourly normals (local standard time) from San Antonio Kelly AFB (6 mi away); average wind 9 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F14 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more2 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below1 of 31
Average days per March, counted from daily records for each year 1991-2020.
Rain in March
Normal precipitation is 2.3 in; a dry March brings about 1.1 in and a wet one about 2.9 in (25th and 75th percentiles). About 1 day brings half an inch or more, and about 1 an inch or more.
How March varies from year to year
- Warmest March, 1991-20202006: average high 79°F
- Coolest March2001: average high 67°F
- Wettest March2007: 7.2 in
- Driest March2011: 0.01 in
- Highest reading100°F (March 6, 1991)
- Lowest reading19°F (March 4, 2002)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
March compared with February and April
| February | March | April | |
|---|---|---|---|
| Normal high | 68°F | 74°F | 80°F |
| Normal low | 45°F | 52°F | 58°F |
| Wet days | 7 | 9 | 6 |
| Comfortable days | 14 | 14 | 8 |
| Daylight | 11.2 h | 12.0 h | 12.9 h |
Highs change by +6°F from February and +6°F into April.
Nearby alternatives in March
- Warmer: Laredo, TX146 mi · high 81°F · 5 wet days
- Drier: Laredo, TX146 mi · high 81°F · 5 wet days
- Cooler: Fort Worth, TX238 mi · high 68°F · 8 wet days
How San Antonio ranks in March
- Normal high50th warmest of 378 cities; 10th of 38 in Texas
- Wet days166th driest of 378
- Comfortable days112th most of 339
What to pack for San Antonio in March
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
March has 139 heating degree days and 71 cooling degree days (base 65°F), 5% of the year's total heating and cooling demand.
Questions
How hot is San Antonio in March?
The normal high is 74°F and the normal low is 52°F. From 1991 to 2020 the hottest March reading was 100°F (March 6, 1991).
Does it rain a lot in San Antonio in March?
About 9 days in March have at least 0.01 in of precipitation, and the normal total is 2.3 in. The wettest March in 1991-2020 was in 2007 (7.2 in); the driest was in 2011 (0.01 in).
Is March a good time to visit San Antonio?
March ranks 2nd of 12 months on our comfort score for San Antonio (67 out of 100). It has about 14 comfortable days and about 1 day at 90°F or hotter. The best months are February, March and November.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: San Antonio Intl Airport (USW00012921), 8.3 mi N of the city center, 789 ft (140 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: San Antonio Kelly AFB (USW00012909), 6.1 mi WSW of the city center, 682 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: San Antonio International Airport (722530-12921), 8.3 mi N of the city center, 799 ft (150 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).