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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in San Marcos, Texas, is another refreshing winter month, with an average temperature ranging between max 59.9°F (15.5°C) and min 42.8°F (6°C). The month of January, characterized by an average high of 59.9°F (15.5°C) and a low of 42.8°F (6°C), is recognized as the coldest. Weather in January »
Weather in February
The last month of the winter, February, is a refreshing month in San Marcos, Texas, with temperature in the range of an average high of 63.7°F (17.6°C) and an average low of 46.9°F (8.3°C). The arrival of February sees a recorded average high-temperature of an enjoyable 63.7°F (17.6°C), showing little divergence from the previous month's conditions. Weather in February »
Weather in March
The first month of the spring, March, is a pleasant month in San Marcos, Texas, with an average temperature varying between 53.1°F (11.7°C) and 70.9°F (21.6°C). San Marcos's weather in March presents a minor rise in the average high-temperature, moving from a comfortable 63.7°F (17.6°C) in February to an agreeable 70.9°F (21.6°C). Weather in March »
Weather in April
April is a moderately hot spring month in San Marcos, Texas, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 58.6°F (14.8°C). April's onset witnesses a minor shift in the average high-temperature, moving from a pleasant 70.9°F (21.6°C) in March to a warm 77.5°F (25.3°C). Weather in April »
Weather in May
May, the last month of the spring in San Marcos, is also a moderately hot month, with an average temperature ranging between min 65.8°F (18.8°C) and max 83.8°F (28.8°C). May's onset is marked by a subtle temperature increase, moving from 77.5°F (25.3°C) in April to a still warm 83.8°F (28.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a tropical month in San Marcos, Texas, with an average temperature fluctuating between 90.7°F (32.6°C) and 72°F (22.2°C). In San Marcos, stepping into June brings a gentle temperature nudge, moving slightly up from May's warm 83.8°F (28.8°C) to a tropical 90.7°F (32.6°C). Weather in June »
Weather in July
July, the same as June, in San Marcos, Texas, is a hot summer month, with an average temperature ranging between min 73.8°F (23.2°C) and max 94.3°F (34.6°C). San Marcos, Texas, records a slight change with July's average high-temperatures adjusting to a still hot 94.3°F (34.6°C) from June's 90.7°F (32.6°C). Weather in July »
Weather in August
August, the last month of the summer in San Marcos, is a sweltering month, with an average temperature ranging between max 95.9°F (35.5°C) and min 74.7°F (23.7°C). San Marcos's August weather reaches an average high of 95.9°F (35.5°C) and an average low of 74.7°F (23.7°C), making it the warmest month. Throughout August, the heat index is evaluated at a blazing hot 118.4°F (48°C). Weather in August »
Weather in September
September, the first month of the autumn in San Marcos, is still a hot month, with an average temperature ranging between max 88°F (31.1°C) and min 70.5°F (21.4°C). In the transition to September, San Marcos observes a minor drop in the average high-temperature, shifting from a very hot 95.9°F (35.5°C) in August to a hot 88°F (31.1°C). Weather in September »
Weather in October
October, like September, in San Marcos, Texas, is a moderately hot autumn month, with an average temperature varying between 79°F (26.1°C) and 61°F (16.1°C). San Marcos in October undergoes a mild reduction in the average high-temperature, shifting from September's hot 88°F (31.1°C) to a moderately hot 79°F (26.1°C). Weather in October »
Weather in November
November, the last month of the autumn in San Marcos, is also an agreeable month, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 68.2°F (20.1°C). A change in temperatures is noted as October gives way to November, with average highs reducing from a moderately hot 79°F (26.1°C) to an agreeable 68.2°F (20.1°C). Weather in November »
Weather in December
The first month of the winter, December, is still a refreshing month in San Marcos, Texas, with an average temperature varying between 45.5°F (7.5°C) and 60.4°F (15.8°C). In December, the average high-temperature marginally decreases from an agreeable 68.2°F (20.1°C) in November to a moderate 60.4°F (15.8°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in San Marcos?
January, on average, is the coldest month, registering a high temperature of 59.9°F (15.5°C) and a low of 42.8°F (6°C).
How much does it rain in San Marcos?
In San Marcos, during the entire year, the rain falls for 151.8 days and collects up to 26.89" (683mm) of precipitation.
When does it snow in San Marcos?
Months with snowfall in San Marcos, Texas, are January, February and December.
When does it snow the most in San Marcos?
The months with the most snowfall are January and February, with an average 0.12" (3mm) of accumulated snow.
How much does it snow in San Marcos?
In San Marcos, during the entire year, snow falls for 0.7 days and aggregates up to 0.28" (7mm) of snow.
What is the driest month in San Marcos?
February is the month with the least rainfall. Rain falls for 11.3 days and accumulates 1.1" (28mm) of precipitation.
When it does not snow in San Marcos?
In San Marcos, Texas, snow does not fall in March through November.
When is Daylight Saving Time (DST) in San Marcos?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the most humid month in San Marcos?
With an average relative humidity of 77%, May is the most humid month in San Marcos, Texas.
What is the wettest month in San Marcos?
The month with the most rainfall in San Marcos, Texas, is May, when the rain falls for 16.6 days and typically aggregates up to 4.57" (116mm) of precipitation.
When are the longest days in San Marcos?
With an average of 14h and 0min of daylight, June has the longest days of the year.
When is the highest UV index in San Marcos?
The months with the highest UV index are June through August, with an average maximum UV index of 7.
What is the month with the most sunshine in San Marcos?
July and August, with an average of 10h of sunshine, are months with the most sunshine.
What part of the year is the hottest in San Marcos?
San Marcos experiences its average highest temperatures in August, reaching a peak of 95.9°F (35.5°C) and a minimum of 74.7°F (23.7°C).
What is the least humid month in San Marcos?
August is the least humid month, with an average relative humidity of 62%.
What is the month with the shortest days in San Marcos?
With an average of 10h and 18min of daylight, December has the shortest days of the year in San Marcos, Texas.
What is the month with the least sunshine in San Marcos?
December has the least sunshine of the year in San Marcos, with an average of 5.2h of sunshine.
What is the month with the lowest UV index in San Marcos?
December is the month with the lowest UV index in San Marcos, Texas, with an average maximum UV index of 3.
Average temperature
San Marcos, TX
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (59.9°F).
The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (42.8°F).
Average pressure
San Marcos, TX
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
San Marcos, TX
- Average wind speed in January:
8.4mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9mph - Average wind speed in April:
8.8mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
6.9mph - Average wind speed in September:
6.1mph - Average wind speed in October:
7.3mph - Average wind speed in November:
7.9mph - Average wind speed in December:
8.1mph
The windiest month (with the highest average wind speed) is February (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.1mph).
Average humidity
San Marcos, TX
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (62%).
Average rainfall
San Marcos, TX
- Average rainfall in January:
1.38" - Average rainfall in February:
1.1" - Average rainfall in March:
1.93" - Average rainfall in April:
2.05" - Average rainfall in May:
4.57" - Average rainfall in June:
2.48"
- Average rainfall in July:
1.65" - Average rainfall in August:
2.05" - Average rainfall in September:
3.62" - Average rainfall in October:
3.11" - Average rainfall in November:
1.38" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days
San Marcos, TX
- Average rainfall days in January:
9.4 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
14.4 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
16.6 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
10.9 days - Average rainfall days in September:
15.5 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
11 days - Average rainfall days in December:
11.7 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (9.4 days).
Average snowfall
San Marcos, TX
The months with the highest snowfall are January and February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days
San Marcos, TX
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.3 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.1 days
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).
Average daylight / Average sunshine
San Marcos, TX
- Average daylight in January:
10h and 3min - Average daylight in February:
11h and 1min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 4min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 5min - Average daylight in August:
13h and 1min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 4min - Average daylight in December:
10h and 2min
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).
- Average sunshine in January:
6h and 1min - Average sunshine in February:
6h and 4min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 2min - Average sunshine in May:
7h and 4min - Average sunshine in June:
9h and 0min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 0min - Average sunshine in September:
8h and 2min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
5h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days
San Marcos, TX
- Average sunshine days in January:
19.4 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
13.1 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
17.7 days - Average sunshine days in August:
18.4 days - Average sunshine days in September:
12.4 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
17.1 days
The month with the most sunshine days is January (19.4 days).
The month with the least sunshine days is May (11.9 days).
Average UV index
San Marcos, TX
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
San Marcos, TX
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility
San Marcos, TX
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
San Marcos, Texas, USA
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