Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
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). The temperature lowers to an average of 73.8°F (23.2°C) during July nights.Heat index
During July, the heat index is evaluated at a burning hot 116.6°F (47°C). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.Observations indicate that the heat index values are for shady locations with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In San Marcos, the average relative humidity in July is 67%.Rainfall
In San Marcos, during July, the rain falls for 11.3 days and regularly aggregates up to 1.65" (42mm) of precipitation. 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 average length of the day in July is 13h and 51min.On the first day of the month, sunrise is at 6:34 am and sunset at 8:36 pm. On the last day of July, sunrise is at 6:50 am and sunset at 8:25 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10h of sunshine.UV index
The months with the highest UV index in San Marcos are June through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 7 in July transforms into this advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
How hot is it in San Marcos in July?
What is the average humidity in July in San Marcos?
How many days does it rain in July in San Marcos?
When it does not snow in San Marcos?
What is the average length of the day in July in San Marcos?
When are sunrise and sunset in July in San Marcos?
What is the month with the most sunshine in San Marcos?
How long on average sun shines in July in San Marcos?
What is the month with the highest UV index in San Marcos?
What is the UV index reading in July in San Marcos?
Average temperature in July
San Marcos, TX
- Average high temperature in July: 94.3°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 July: 73.8°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 July
San Marcos, TX
- Average pressure in July: 29.95"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 July
San Marcos, TX
- Average wind speed in July: 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).
Average humidity in July
San Marcos, TX
- Average humidity in July: 67%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (62%).
Average rainfall in July
San Marcos, TX
- Average rainfall in July: 1.65"
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 July
San Marcos, TX
- Average rainfall days in July: 11.3 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 July
San Marcos, TX
- Average snowfall in July: 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 July
San Marcos, TX
- Average snowfall days in July: 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 July /
Average sunshine in July
San Marcos, TX
- Average daylight in July: 13h and 5min
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 July: 10h 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 July
San Marcos, TX
- Average sunshine days in July: 17.7 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 July
San Marcos, TX
- Average UV index in July: 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 July
San Marcos, TX
- Average cloud cover in July: 32
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 July
San Marcos, TX
- Average visibility in July: 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).
San Marcos, Texas, USA
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