March weather forecast
San Juan, TX

Share

Weather in March

The first month of the spring, March, is still a warm month in San Juan, Texas, with an average temperature varying between 82°F (27.8°C) and 63.1°F (17.3°C).

Temperature

San Juan's March weather indicates a minor increase in high-temperatures, edging from February's 75.4°F (24.1°C) to a still moderately hot 82°F (27.8°C). Throughout March, San Juan witnesses a nighttime temperature average of 63.1°F (17.3°C).

Heat index

During March, the heat index is appraised at a tropical 86°F (30°C). Enduring exposure and unrelenting activity might cause a state of weariness, potentially leading to heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In March, the average relative humidity in San Juan is 65%.

Rainfall

In San Juan, in March, it is raining for 6.8 days, with typically 0.39" (10mm) of accumulated precipitation. Throughout the year, there are 94.1 rainfall days, and 9.06" (230mm) of precipitation is accumulated.

Snowfall

In San Juan, snow does not fall in February through December.

Daylight

The average length of the day in March is 12h and 2min.
On the first day of March, sunrise is at 6:55 am and sunset at 6:34 pm CST. On the last day of the month, sunrise is at 7:23 am and sunset at 7:49 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.

Sunshine

The average sunshine in March is 7.8h.

UV index

The average daily maximum UV index in March is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 6 in March translates into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are March temperatures?

An average high-temperature, in March, in San Juan, is 82°F (27.8°C) and the average low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in March is appraised at 86°F (30°C).

What is the average humidity in March?

In San Juan, the average relative humidity in March is 65%.

How many days does it rain in March?

In San Juan, in March, during 6.8 rainfall days, 0.39" (10mm) of precipitation is typically accumulated.

When it does not snow?

February through December are months without snowfall.

How many hours of daylight does San Juan have in March?

The average day length in March is 12h and 2min.

When are sunrise and sunset in March?

On the first day of March in San Juan, Texas, sunrise is at 6:55 am and sunset at 6:34 pm CST. On the last day of the month, sunrise is at 7:23 am and sunset at 7:49 pm CDT.

When does Daylight Saving Time (DST) start in March?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How many hours of sunshine does San Juan have in March?

In March, the average sunshine duration is 7.8h.

What is the UV index intensity in March?

In March, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat 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 March
San Juan, TX

Average temperature in March - San Juan, TX
  • Average high temperature in March: 82°F

The warmest month (with the highest average high temperature) is August (98.2°F).
The month with the lowest average high temperature is January (69.6°F).

  • Average low temperature in March: 63.1°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (53.4°F).

Average pressure in March
San Juan, TX

Average pressure in March - San Juan, TX
  • Average pressure in March: 29.99"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).

Average wind speed in March
San Juan, TX

Average wind speed in March - San Juan, TX
  • Average wind speed in March: 11.9mph

The windiest month (with the highest average wind speed) is May (12.4mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).

Average humidity in March
San Juan, TX

Average humidity in March - San Juan, TX
  • Average humidity in March: 65%

The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (59%).

Average rainfall in March
San Juan, TX

Average rainfall in March - San Juan, TX
  • Average rainfall in March: 0.39"

The wettest month (with the highest rainfall) is September (1.46").
The driest months (with the least rainfall) are January and February (0.31").

Average rainfall days in March
San Juan, TX

Average rainfall days in March - San Juan, TX
  • Average rainfall days in March: 6.8 days

The month with the highest number of rainy days is September (15.1 days).
The month with the least rainy days is February (5.4 days).

Average snowfall in March
San Juan, TX

Average snowfall in March - San Juan, TX
  • Average snowfall in March: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in March
San Juan, TX

Average snowfall days in March - San Juan, TX
  • Average snowfall days in March: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in March /
Average sunshine in March
San Juan, TX

Average daylight in March / Average sunshine in March - San Juan, TX
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in March: 7h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in March
San Juan, TX

Average sunshine days in March - San Juan, TX
  • Average sunshine days in March: 22.5 days

The month with the most sunshine days is July (23 days).
The month with the least sunshine days is September (12.5 days).

Average UV index in March
San Juan, TX

Average UV index in March - San Juan, TX
  • Average UV index in March: 6

The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).

Average cloud cover in March
San Juan, TX

Average cloud cover in March - San Juan, TX
  • Average cloud cover in March: 35

The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in March
San Juan, TX

Average visibility in March - San Juan, TX
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

San Juan, Texas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location