April weather forecast
San Marcos, TX

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Weather in April

April in San Marcos, Texas, is a moderately hot spring month, 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).

Temperature

The beginning of April signals a minor rise in the average high-temperature, moving from an agreeable 70.9°F (21.6°C) in March to a moderately hot 77.5°F (25.3°C). Throughout the month of April, the average temperature dips to a moderate 58.6°F (14.8°C) at night.

Humidity

The average relative humidity in April is 74%.

Rainfall

In San Marcos, in April, during 14.9 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In San Marcos, Texas, during the entire year, the rain falls for 151.8 days and collects up to 26.89" (683mm) of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

In San Marcos, the average length of the day in April is 12h and 55min.
On the first day of April, sunrise is at 7:20 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 8:08 pm CDT.

Sunshine

In April, the average sunshine is 7.4h.

UV index

In San Marcos, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in April converts into the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

What is the temperature in April?

April temperatures vary between a high-temperature of 77.5°F (25.3°C) and a low-temperature of 58.6°F (14.8°C).

What is the average humidity in April?

In April, the average relative humidity is 74%.

How many days does it rain in April?

In April, the rain falls for 14.9 days. Throughout April, 2.05" (52mm) of precipitation is accumulated.

When it does not snow in San Marcos?

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

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

The average day length in April in San Marcos is 12h and 55min.

When is the sunrise / sunset in April in San Marcos?

On the first day of April, sunrise is at 7:20 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 8:08 pm CDT.

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

In April, the average sunshine duration is 7.4h.

What is the UV index reading in April?

The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
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 April
San Marcos, TX

Average temperature in April - San Marcos, TX
  • Average high temperature in April: 77.5°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 April: 58.6°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 April
San Marcos, TX

Average pressure in April - San Marcos, TX
  • Average pressure in April: 29.93"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 April
San Marcos, TX

Average wind speed in April - San Marcos, TX
  • Average wind speed in April: 8.8mph

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 April
San Marcos, TX

Average humidity in April - San Marcos, TX
  • Average humidity in April: 74%

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

Average rainfall in April
San Marcos, TX

Average rainfall in April - San Marcos, TX
  • Average rainfall in April: 2.05"

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 April
San Marcos, TX

Average rainfall days in April - San Marcos, TX
  • Average rainfall days in April: 14.9 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 April
San Marcos, TX

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

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

Average daylight in April / Average sunshine in April - San Marcos, TX
  • Average daylight in April: 12h 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 April: 7h and 2min

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 April
San Marcos, TX

Average sunshine days in April - San Marcos, TX
  • Average sunshine days in April: 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 April
San Marcos, TX

Average UV index in April - San Marcos, TX
  • Average UV index in April: 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).

Average cloud cover in April
San Marcos, TX

Average cloud cover in April - San Marcos, TX
  • Average cloud cover in April: 45

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 April
San Marcos, TX

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