Climate and monthly weather forecast
San Antonio, TX

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

Weather in January

January, the same as December, is another comfortable winter month in San Antonio, Texas, with an average temperature ranging between min 44.2°F (6.8°C) and max 61.7°F (16.5°C). With an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 44.2°F (6.8°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in San Antonio, is also an enjoyable month, with an average temperature varying between 48.2°F (9°C) and 65.8°F (18.8°C). In February, the average high-temperature is essentially the same as in January - a still comfortable 65.8°F (18.8°C). Weather in February »

Weather in March

March, the first month of the spring in San Antonio, is an agreeable month, with an average temperature fluctuating between 54.3°F (12.4°C) and 72.7°F (22.6°C). In San Antonio, the average high-temperature in March slightly increases from a comfortable 65.8°F (18.8°C) in February to a pleasant 72.7°F (22.6°C). Weather in March »

Weather in April

April in San Antonio, Texas, is a warm spring month, with an average temperature fluctuating between 79.7°F (26.5°C) and 60.6°F (15.9°C). In April, the average high-temperature slightly increases from an agreeable 72.7°F (22.6°C) in March to a moderately hot 79.7°F (26.5°C). Weather in April »

Weather in May

May, the last month of the spring in San Antonio, is another warm month, with an average temperature fluctuating between 85.6°F (29.8°C) and 67.3°F (19.6°C). In San Antonio, Texas, the average high-temperature in May slightly increases from 79.7°F (26.5°C) in April to a still moderately hot 85.6°F (29.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a tropical month in San Antonio, Texas, with temperature in the range of an average low of 72.7°F (22.6°C) and an average high of 92.1°F (33.4°C). In San Antonio, the average high-temperature in June slightly increases from a warm 85.6°F (29.8°C) in May to a hot 92.1°F (33.4°C). Weather in June »

Weather in July

July in San Antonio, Texas, is a sweltering summer month, with an average temperature ranging between max 95.5°F (35.3°C) and min 74.8°F (23.8°C). In San Antonio, the average high-temperature in July is almost the same as in June - a very hot 95.5°F (35.3°C). Weather in July »

Weather in August

The last month of the summer, August, is another very hot month in San Antonio, Texas, with an average temperature ranging between min 75.7°F (24.3°C) and max 96.6°F (35.9°C). With an average high-temperature of 96.6°F (35.9°C) and an average low-temperature of 75.7°F (24.3°C), August is the warmest month. In August, the average heat index is calculated to be a burning hot 117.1°F (47.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a tropical month in San Antonio, Texas, with temperature in the range of an average low of 71.6°F (22°C) and an average high of 89.1°F (31.7°C). In September, the average high-temperature slightly decreases from a sweltering 96.6°F (35.9°C) in August to a hot 89.1°F (31.7°C). Weather in September »

Weather in October

October, like September, in San Antonio, Texas, is a moderately hot autumn month, with an average temperature varying between 80.6°F (27°C) and 62.4°F (16.9°C). In San Antonio, the average high-temperature in October marginally drops from a hot 89.1°F (31.7°C) in September to a moderately hot 80.6°F (27°C). Weather in October »

Weather in November

November, the last month of the autumn in San Antonio, is also an agreeable month, with an average temperature ranging between max 69.8°F (21°C) and min 53.2°F (11.8°C). In November, the average high-temperature decreases from a warm 80.6°F (27°C) in October to a pleasant 69.8°F (21°C). Weather in November »

Weather in December

December, the first month of the winter in San Antonio, is still a comfortable month, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 46.9°F (8.3°C). In December, the average high-temperature slightly decreases from an agreeable 69.8°F (21°C) in November to an enjoyable 62.4°F (16.9°C). Weather in December »
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FAQ

What is the coldest month in San Antonio?

The coldest month is January, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 44.2°F (6.8°C).

How much does it rain in San Antonio?

In San Antonio, Texas, during the entire year, the rain falls for 144.5 days and collects up to 22.6" (574mm) of precipitation.

When does it snow in San Antonio?

Months with snowfall in San Antonio, Texas, are January, February and December.

When does it snow the most in San Antonio?

The months with the most snowfall in San Antonio are January and February, with an average 0.08" (2mm) of accumulated snow.

How many days does it snow in San Antonio?

In San Antonio, Texas, during the entire year, snow falls for 0.7 days and aggregates up to 0.2" (5mm) of snow.

What is the driest month in San Antonio?

February is the month with the least rainfall. Rain falls for 10.7 days and accumulates 0.98" (25mm) of precipitation.

When it does not snow in San Antonio?

March through November are months without snowfall.

When is Daylight Saving Time (DST) in San Antonio?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the most humid month in San Antonio?

With an average relative humidity of 73%, May is the most humid month.

What is the wettest month in San Antonio?

The month with the most rainfall is May, when the rain falls for 16.4 days and typically aggregates up to 3.66" (93mm) of precipitation.

When are the longest days in San Antonio?

June has the longest days of the year, with an average of 14h and 0min of daylight.

What are the months with the highest UV index in San Antonio?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

What month has the most sunshine in San Antonio?

With an average of 10.3h of sunshine, July has the most sunshine of the year.

What is the warmest month in San Antonio?

With an average high-temperature of 96.6°F (35.9°C) and an average low-temperature of 75.7°F (24.3°C), August is the warmest month in San Antonio.

What is the least humid month in San Antonio?

With an average relative humidity of 59%, August is the least humid month.

What is the month with the shortest days in San Antonio?

The month with the shortest days in San Antonio, Texas, is December, with an average of 10h and 18min of daylight.

What is the month with the least sunshine in San Antonio?

The month with the least sunshine is December, with an average of 5.3h of sunshine.

When is the lowest UV index in San Antonio?

The month with the lowest UV index in San Antonio, Texas, is December, with an average maximum UV index of 3.

Average temperature
San Antonio, TX

Average temperature - San Antonio, TX

The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (61.7°F).

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure
San Antonio, TX

Average pressure - San Antonio, TX

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed
San Antonio, TX

Average wind speed - San Antonio, TX

The windiest month (with the highest average wind speed) is May (9mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).

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Average rainfall
San Antonio, TX

Average rainfall - San Antonio, TX

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is February (0.98").

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Average rainfall days
San Antonio, TX

Average rainfall days - San Antonio, TX

The month with the highest number of rainy days is September (17 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall
San Antonio, TX

Average snowfall - San Antonio, TX

The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days
San Antonio, TX

Average snowfall days - San Antonio, TX

The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
San Antonio, TX

Average daylight / Average sunshine - San Antonio, TX

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days
San Antonio, TX

Average sunshine days - San Antonio, TX

The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are May and September (11.8 days).

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Average visibility
San Antonio, TX

Average visibility - San Antonio, TX

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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