San Antonio
Texas, USA
Long-term weather forecast
Long-term weather forecast
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March weather forecast and Climate
San Antonio, TX

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Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
March brings warm spring weather to San Antonio as the average temperatures keep in the 51°F (10.6°C) to 74°F (23.3°C) range. A few days rise to 80°F (26.7°C) while the nights drop to 40°F (4.4°C) at the most.
Spring breezes make the conditions more pleasant as tourists make a bee run for historical sites and various other attractions. Even though March is wet with about 2.3" (58.4mm) of rain, the days are warm, and the sunlight lasts for around 12 hours a day. An umbrella serves as a useful accessory to shield from unpredictable spurts of rain, and layered clothing protects from a cold spell of weather.
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  • The average high temperature in March: 23°C

Warmest months (with the highest average high temperature) are July and August (35°C).
The month with the lowest average high temperature is January (16°C).

  • The average low temperature in March: 10°C

Months with the highest average low temperature are July and August (23°C).
The coldest month (with the lowest average low temperature) is January (3°C).

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  • The average rainfall in March: 37mm

The wettest month (with the highest rainfall) is May (94mm).
The driest month (with the lowest rainfall) is March (37mm).

  • The average rainfall days in March: 6 days

The month with the highest number of rainy days is May (8 days).
Months with the lowest number of rainy days are July and August (5 days).

  • The average daylight in March: 12h

Months with the longest days are May, June and July (Average daylight: 14h).
The month with shortest days is December (Average daylight: 10h).

  • The average sunshine in March: 7h

The month with most sunshine is July (Average sunshine: 10h).
Months with least sunshine are January and December (Average sunshine: 5).

  • The average UV index in March: 8

Months with the highest UV index are May, June, July and August (UV index 11).
Months with the lowest UV index are January and December (UV index 4).

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