June weather forecast
San Marcos, TX

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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).

Temperature

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). Throughout the month of June, San Marcos witnesses an average temperature of 72°F (22.2°C).

Heat index

In June, the heat index is evaluated at a blistering 109.4°F (43°C). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

The average relative humidity in June in San Marcos is 73%.

Rainfall

In San Marcos, in June, it is raining for 14.2 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, there are 151.8 rainfall days, and 26.89" (683mm) of precipitation is accumulated.

Snowfall

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

Daylight

June has the longest days of the year, with an average of 14h and 0min of daylight.
On the first day of June in San Marcos, sunrise is at 6:31 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:36 pm CDT.

Sunshine

In San Marcos, Texas, the average sunshine in June is 9h.

UV index

The months with the highest UV index in San Marcos, Texas, are June through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 7 during June leads to these advisories:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

How hot does it get in San Marcos in June?

An average high-temperature, in June, in San Marcos, is 90.7°F (32.6°C) and the average low-temperature is 72°F (22.2°C). In June, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 109.4°F (43°C).

What is the average humidity in June in San Marcos?

In June, the average relative humidity in San Marcos is 73%.

How much does it rain in San Marcos in June?

In San Marcos, Texas, in June, it is raining for 14.2 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow in San Marcos?

March through November are months without snowfall in San Marcos.

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 in San Marcos.

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

In June, the average day length in San Marcos, Texas, is 14h and 2min.

When are sunrise and sunset in June in San Marcos?

On the first day of June in San Marcos, Texas, sunrise is at 6:31 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 8:36 pm CDT.

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

In San Marcos, Texas, the average sunshine duration in June is 9h.

When is the highest UV index in San Marcos?

The months with the highest UV index in San Marcos, Texas, are June through August, with an average maximum UV index of 7.

What is the UV index reading in June in San Marcos?

In June, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe 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 June
San Marcos, TX

Average temperature in June - San Marcos, TX
  • Average high temperature in June: 90.7°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 June: 72°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 June
San Marcos, TX

Average pressure in June - San Marcos, TX
  • Average pressure in June: 29.9"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 June
San Marcos, TX

Average wind speed in June - San Marcos, TX
  • Average wind speed in June: 7.5mph

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 June
San Marcos, TX

Average humidity in June - San Marcos, TX
  • Average humidity in June: 73%

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 June
San Marcos, TX

Average rainfall in June - San Marcos, TX
  • Average rainfall in June: 2.48"

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 June
San Marcos, TX

Average rainfall days in June - San Marcos, TX
  • Average rainfall days in June: 14.2 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 June
San Marcos, TX

Average snowfall in June - San Marcos, TX
  • Average snowfall in June: 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 June
San Marcos, TX

Average snowfall days in June - San Marcos, TX
  • Average snowfall days in June: 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 June /
Average sunshine in June
San Marcos, TX

Average daylight in June / Average sunshine in June - San Marcos, TX
  • Average daylight in June: 14h and 0min

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 June: 9h and 0min

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 June
San Marcos, TX

Average sunshine days in June - San Marcos, TX
  • Average sunshine days in June: 13.1 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).

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Average UV index in June
San Marcos, TX

Average UV index in June - San Marcos, TX
  • Average UV index in June: 7

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 June
San Marcos, TX

Average cloud cover in June - San Marcos, TX
  • Average cloud cover in June: 40

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 June
San Marcos, TX

Average visibility in June - San Marcos, TX
  • Average visibility in June: 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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