October weather forecast
San Marcos, TX

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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).

Temperature

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). Nighttime temperature in San Marcos experiences an average drop to an enjoyable 61°F (16.1°C) in October.

Humidity

In San Marcos, the average relative humidity in October is 69%.

Rainfall

In San Marcos, Texas, in October, during 10.6 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. In San Marcos, during the entire year, the rain falls for 151.8 days and collects up to 26.89" (683mm) of precipitation.

Snowfall

In San Marcos, Texas, snow does not fall in March through November.

Daylight

The average length of the day in October in San Marcos is 11h and 26min.
On the first day of October in San Marcos, sunrise is at 7:25 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 6:45 pm CDT.

Sunshine

In San Marcos, the average sunshine in October is 6.9h.

UV index

In San Marcos, the average daily maximum UV index in October is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 5 in October translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What is the usual temperature for San Marcos in October?

The average high-temperature, in October, in San Marcos, is 79°F (26.1°C), while the average low-temperature is 61°F (16.1°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 100.4°F (38°C).

What is the average humidity in October in San Marcos?

In October, the average relative humidity in San Marcos, Texas, is 69%.

How much does it rain in San Marcos in October?

In San Marcos, Texas, during October, the rain falls for 10.6 days and regularly aggregates up to 3.11" (79mm) of precipitation.

When it does not snow in San Marcos?

March through November are months without snowfall in San Marcos.

How many hours of daylight does San Marcos have in October?

The average day length in October in San Marcos, Texas, is 11h and 26min.

When are sunrise and sunset in October in San Marcos?

On the first day of October, sunrise is at 7:25 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 6:45 pm CDT.

How many hours of sunshine does San Marcos have in October?

The average sunshine duration in October is 6.9h.

How high is the UV index in October in San Marcos?

In San Marcos, Texas, the average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
San Marcos, TX

Average temperature in October - San Marcos, TX
  • Average high temperature in October: 79°F

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).

  • Average low temperature in October: 61°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).

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Average pressure in October
San Marcos, TX

Average pressure in October - San Marcos, TX
  • Average pressure in October: 30"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).

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Average wind speed in October
San Marcos, TX

Average wind speed in October - San Marcos, TX
  • Average wind speed in October: 7.3mph

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).

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Average humidity in October
San Marcos, TX

Average humidity in October - San Marcos, TX
  • Average humidity in October: 69%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (62%).

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Average rainfall in October
San Marcos, TX

Average rainfall in October - San Marcos, TX
  • Average rainfall in October: 3.11"

The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is February (1.1").

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Average rainfall days in October
San Marcos, TX

Average rainfall days in October - San Marcos, TX
  • Average rainfall days in October: 10.6 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).

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Average snowfall in October
San Marcos, TX

Average snowfall in October - San Marcos, TX
  • Average snowfall in October: 0"

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").

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Average snowfall days in October
San Marcos, TX

Average snowfall days in October - San Marcos, TX
  • Average snowfall days in October: 0 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).

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Average daylight in October /
Average sunshine in October
San Marcos, TX

Average daylight in October / Average sunshine in October - San Marcos, TX
  • Average daylight in October: 11h 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 October: 6h and 5min

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).

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Average sunshine days in October
San Marcos, TX

Average sunshine days in October - San Marcos, TX
  • Average sunshine days in October: 17.6 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).

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Average UV index in October
San Marcos, TX

Average UV index in October - San Marcos, TX
  • Average UV index in October: 5

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).

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Average cloud cover in October
San Marcos, TX

Average cloud cover in October - San Marcos, TX
  • Average cloud cover in October: 35

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in October
San Marcos, TX

Average visibility in October - San Marcos, TX
  • Average visibility in October: 6mi

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).

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San Marcos, Texas, USA

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