Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The beginning of December brings a minor change in the average high-temperature, shifting from a warm 77.5°F (25.3°C) in November to an agreeable 70.9°F (21.6°C). Throughout the month of December, San Isidro witnesses an average temperature of 54.5°F (12.5°C).Humidity
The most humid month in San Isidro, Texas, is December, with an average relative humidity of 65%.Rainfall
In December, in San Isidro, the rain falls for 7.5 days. Throughout December, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 98.5 rainfall days, and 13.11" (333mm) of precipitation is accumulated.Snowfall
In San Isidro, Texas, snow does not fall in March through December.Daylight
With an average of 10h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:05 am and sunset at 5:40 pm. On the last day of December, in San Isidro, sunrise is at 7:22 am and sunset at 5:52 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.8h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 4 leads to the following instructions:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What are December temperatures in San Isidro?
What is the most humid month in San Isidro?
What is the average humidity in December in San Isidro?
How many days does it rain in December in San Isidro?
When it does not snow in San Isidro?
Does it snow in San Isidro in December?
What is the month with the shortest days in San Isidro?
How many hours of daylight does San Isidro have in December?
What time are sunrise and sunset in December in San Isidro?
What is the month with the least sunshine in San Isidro?
How many hours of sunshine does San Isidro have in December?
When is the lowest UV index in San Isidro?
What is the UV index intensity in December in San Isidro?
Average temperature in December
San Isidro, TX
- Average high temperature in December: 70.9°F
The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (69.8°F).
- Average low temperature in December: 54.5°F
The month with the highest average low temperature is August (80.1°F).
The coldest month (with the lowest average low temperature) is January (52.7°F).
Average pressure in December
San Isidro, TX
- Average pressure in December: 30.08"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 December
San Isidro, TX
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is December (9.2mph).
Average humidity in December
San Isidro, TX
- Average humidity in December: 65%
The month with the highest relative humidity is December (65%).
The month with the lowest relative humidity is August (53%).
Average rainfall in December
San Isidro, TX
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is September (2.56").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in December
San Isidro, TX
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is September (15.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall days in December
San Isidro, TX
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
San Isidro, TX
- Average daylight in December: 10h and 3min
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 December: 5h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
San Isidro, TX
- Average sunshine days in December: 21.1 days
The months with the most sunshine days are July and August (22.6 days).
The month with the least sunshine days is September (12.9 days).
Average UV index in December
San Isidro, TX
- Average UV index in December: 4
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 December
San Isidro, TX
- Average cloud cover in December: 36
The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
San Isidro, TX
- Average visibility in December: 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 Isidro, Texas, USA
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