January is the coldest month in San Antonio, TX
with high temperatures averaging 62°F (18°C). Average low temperatures sink down to 39°F (4°C). This month is also the driest in San Antonio with just over an inch and a half of rain (42 mm) to be expected.
In February, the temperatures increase a little bit for the last month of winter. Average high temperatures are 67°F (20°C) while average low temperatures hover at around 42°F (6°C).
San Antonio Weather in March: Spring begins in March at San Antonio. Temperatures remain generally cool during this season as average high temperatures peak at 74°F (24°C). Average low temperatures can get as low as 50°F (10°C).
April’s climate sees average high temperatures of 80°F (27°C). Low temperature averages also make a bit of an increase compared to the previous month at 57°F (14°C).
In May, the average high temperatures and average low temperatures continue to increase and range between 86°F (30°C) to 65°F (19°C). May is also the rainiest month of the year in San Antonio with an average rainfall of 5 inches (120 mm).
San Antonio Weather in June: The heat is on in June at San Antonio as summer kicks off and the average high temperatures start breaching the 90s. Low temperature is 72°F (22°C). Now is the best time to head to nearby beaches or lakes to cool off from the scorching sun.
July is the hottest month of the year in San Antonio as the average high temperature is a scorching 95°F (35°C). Average low temperatures offer a bit more respite at 74°F (23°C).
In August the average temperatures stay exactly the same, tying with July as the two hottest months of the year.
San Antonio Weather in September: The temperatures in September start going down as summer begins its last month in San Antonio. Average high temperatures drop down a few degrees to 90°F (32°C). Meanwhile, the average low temperatures decrease to 69°F (20°C).
October marks the beginning of a relatively warm autumn season deep in the heart of Texas. Average high temperatures will hover just above 80 degrees at 82°F (28°C). The low temperature average is 59°F (15°C).
In November, the average high temperature decreases to a cool 71°F (22°C). Average low temperatures are at about 49°F (9°C), so be sure to carry a decent sweater around with you in the evenings.
December is the second to the coldest month in San Antonio next to January. The winter season brings an average low temperature of 41°F (5°C) while the average high temperature is 64°F (18°C).
Late March through May is the best time of year to visit Texas in general. During these months, the weather is not as intense as usual and many attractions remain open despite it being the shoulder season. These months are also the best time of the year to visit Texas for rodeos and festivals. June and August are the best months for outdoor and water based activities such as beach trips, lake trips and excursions to the rivers.
Photo: CE Photography/Fotolia
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