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 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
In McAllen, the average high-temperature in December slightly decreases from a warm 77.7°F (25.4°C) in November to a pleasant 71.4°F (21.9°C). December nights in McAllen cool down to an average low-temperature of 56.1°F (13.4°C).Humidity
In McAllen, the average relative humidity in December is 67%.Rainfall
In McAllen, during December, the rain falls for 8.2 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, there are 103.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.Snowfall
In McAllen, snow does not fall in February through December.Daylight
The month with the shortest days is December, with an average of 10h and 30min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 5:40 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:52 pm CST.
Sunshine
With an average of 5.5h of sunshine, December has the least sunshine of the year.UV index
With an average maximum UV index of 4, December is the month with the lowest UV index in McAllen. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 during December translates into the following directions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
What is the usual temperature for McAllen in December?
What is the average humidity in December in McAllen?
How many days does it rain in December in McAllen?
When it does not snow in McAllen?
Does it snow in McAllen in December?
What is the month with the shortest days in McAllen?
How many hours of daylight does McAllen have in December?
When is the sunrise / sunset in December in McAllen?
What is the month with the least sunshine in McAllen?
How long on average sun shines in December in McAllen?
When is the lowest UV index in McAllen?
What is the UV index intensity in December in McAllen?
Average temperature in December
McAllen, TX
- Average high temperature in December: 71.4°F
The warmest month (with the highest average high temperature) is August (98.6°F).
The month with the lowest average high temperature is January (69.8°F).
- Average low temperature in December: 56.1°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 (53.2°F).
Average pressure in December
McAllen, TX
- Average pressure in December: 30.07"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
McAllen, TX
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is May (12.6mph).
The calmest month (with the lowest average wind speed) is September (9.1mph).
Average humidity in December
McAllen, TX
- Average humidity in December: 67%
The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
McAllen, TX
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is September (2.13").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in December
McAllen, TX
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is September (15.4 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
McAllen, TX
- Average snowfall in December: 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 December
McAllen, TX
- Average snowfall days in December: 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 December /
Average sunshine in December
McAllen, 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 3min
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 December
McAllen, TX
- Average sunshine days in December: 21 days
The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is September (12.5 days).
Average UV index in December
McAllen, 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
McAllen, TX
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
McAllen, 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).
McAllen, Texas, USA
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