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
December's arrival subtly correlates with a reduction in the average high-temperature, down from a moderately hot 75.7°F (24.3°C) in November to a refreshing 67.6°F (19.8°C). Islitas, during December nights, observes an average temperature of 51.6°F (10.9°C).Humidity
December is the most humid month, with an average relative humidity of 62%.Rainfall
In Islitas, Texas, in December, during 6.7 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Islitas, during the entire year, the rain falls for 91.9 days and collects up to 10.55" (268mm) of precipitation.Snowfall
Months with snowfall in Islitas, Texas, are January, February and December. December is the first month it typically snows. Throughout December, there are 0.1 snowfall days. Throughout the year, there are 0.4 snowfall days.Daylight
December has the shortest days of the year in Islitas, with an average of 10h and 24min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 5:43 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:54 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.7h of sunshine.UV index
The months with the lowest UV index are January and December, 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 rays for the average person.Note: The UV index of 4 during December translates into the following guidance:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
What is the average December temperature in Islitas?
What is the most humid month in Islitas?
What is the average humidity in December in Islitas?
How many days does it rain in December in Islitas?
When does it start snowing in Islitas?
What is the month with the shortest days in Islitas?
What is the average length of the day in December in Islitas?
When are sunrise and sunset in December in Islitas?
What is the month with the least sunshine in Islitas?
How many hours of sunshine does Islitas have in December?
What are the months with the lowest UV index in Islitas?
What is the UV index reading in December in Islitas?
Average temperature in December
Islitas, TX
- Average high temperature in December: 67.6°F
The warmest month (with the highest average high temperature) is August (100°F).
The month with the lowest average high temperature is January (66.9°F).
- Average low temperature in December: 51.6°F
The month with the highest average low temperature is August (79.9°F).
The coldest month (with the lowest average low temperature) is January (50.2°F).
Average pressure in December
Islitas, TX
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are May and June (29.86"Hg).
Average wind speed in December
Islitas, TX
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is July (13.5mph).
The calmest month (with the lowest average wind speed) is December (8.9mph).
Average humidity in December
Islitas, TX
- Average humidity in December: 62%
The month with the highest relative humidity is December (62%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Islitas, TX
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is September (2.17").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in December
Islitas, TX
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is September (12.9 days).
The month with the least rainy days is November (5.5 days).
Average snowfall days in December
Islitas, TX
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Islitas, TX
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Islitas, TX
- Average sunshine days in December: 22.7 days
The month with the most sunshine days is January (23.3 days).
The month with the least sunshine days is September (15.1 days).
Average UV index in December
Islitas, TX
- Average UV index in December: 4
The months with the highest UV index are July and August (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in December
Islitas, 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 17).
Average visibility in December
Islitas, 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).
Islitas, Texas, USA
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