December weather forecastJacksonville, TX
December
Weather in December
December, the first month of the winter in Jacksonville, is also a moderate month, with an average temperature fluctuating between 42.1°F (5.6°C) and 57°F (13.9°C).Temperature
The move into December indicates a slight reduction in the average high-temperature, down from November's enjoyable 65.1°F (18.4°C) to a mild 57°F (13.9°C). During December, the average low-temperature is a cold 42.1°F (5.6°C).Humidity
In Jacksonville, Texas, the average relative humidity in December is 79%.Rainfall
In Jacksonville, Texas, in December, it is raining for 11.5 days, with typically 2.99" (76mm) of accumulated precipitation. In Jacksonville, during the entire year, the rain falls for 149.1 days and collects up to 32.32" (821mm) of precipitation.Snowfall
In Jacksonville, snow does not fall in March through December.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:04 am and sunset at 5:16 pm. On the last day of December, sunrise is at 7:21 am and sunset at 5:27 pm CST.
Sunshine
With an average of 5h of sunshine, December has the least sunshine of the year.UV index
January, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 3 during December translates into the following guidance:
Take precautions - Protection against sunburn is recommended. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jacksonville, TX
- Average high temperature in December: 57°F
The warmest month (with the highest average high temperature) is August (95.4°F).
The month with the lowest average high temperature is January (55.4°F).
- Average low temperature in December: 42.1°F
The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).
Average pressure in December
Jacksonville, TX
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Jacksonville, TX
- Average wind speed in December: 6.7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in December
Jacksonville, TX
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
Jacksonville, TX
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is October (3.74").
The driest months (with the least rainfall) are July and August (1.89").
Average rainfall days in December
Jacksonville, TX
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Jacksonville, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.51").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Jacksonville, TX
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Jacksonville, TX
- Average daylight in December: 10h and 6min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Jacksonville, TX
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (13.6 days).
Average UV index in December
Jacksonville, TX
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in December
Jacksonville, TX
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Jacksonville, TX
- Average visibility in December: 6mi
The months with the highest visibility are January, March, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February, April and May (5mi).
