June weather forecastSan Marcos, TX
June
Weather in June
The first month of the summer, June, is a tropical month in San Marcos, Texas, with an average temperature varying between 90.7°F (32.6°C) and 72°F (22.2°C).Temperature
San Marcos's transition into June sees a mild rise in the average high-temperature, edging from a warm 83.8°F (28.8°C) in May to a hot 90.7°F (32.6°C). Throughout the nights in June, San Marcos experiences an average low-temperature of 72°F (22.2°C).Heat index
For most parts of June, the heat index is appraised at a blisteringly hot 109.4°F (43°C). Keep on guard: Heat exhaustion and heat cramps are probable. Heatstroke is a possible danger with ongoing physical activity.Know that the heat index computations account for shaded terrains and slight winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
In San Marcos, the average relative humidity in June is 73%.Rainfall
In June, the rain falls for 14.2 days. Throughout June, 2.48" (63mm) of precipitation is 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, snow does not fall in March through November.Daylight
The month with the longest days is June, with an average of 14h and 0min of daylight.On the first day of the month, sunrise is at 6:31 am and sunset at 8:28 pm. On the last day of June, sunrise is at 6:34 am and sunset at 8:36 pm CDT.
Sunshine
In June, the average sunshine is 9h.UV index
June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In June, an average UV index of 7 transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
