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 Jefferson, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's enjoyable 63.9°F (17.7°C) to a mild 55.8°F (13.2°C). An average minimum temperature of 41.2°F (5.1°C) is recorded during the month of December.Humidity
The average relative humidity in December is 79%.Rainfall
In Jefferson, Texas, in December, during 12.1 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. In Jefferson, during the entire year, the rain falls for 155.6 days and collects up to 35.79" (909mm) of precipitation.Snowfall
April through December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of December in Jefferson, sunrise is at 7:02 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:21 pm CST.
Sunshine
The month with the least sunshine in Jefferson, Texas, is December, with an average of 5.1h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 during December translates into the following directions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What are December temperatures in Jefferson?
What is the average humidity in December in Jefferson?
How many days does it rain in December in Jefferson?
When it does not snow in Jefferson?
Does it snow in Jefferson in December?
What is the month with the shortest days in Jefferson?
What is the average length of the day in December in Jefferson?
When are sunrise and sunset in December in Jefferson?
What is the month with the least sunshine in Jefferson?
How long on average sun shines in December in Jefferson?
What are the months with the lowest UV index in Jefferson?
How high is the UV index in December in Jefferson?
Average temperature in December
Jefferson, TX
- Average high temperature in December: 55.8°F
The warmest month (with the highest average high temperature) is July (94.8°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in December: 41.2°F
The months with the highest average low temperature are July and August (73°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in December
Jefferson, TX
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Jefferson, TX
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Jefferson, 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 (67%).
Average rainfall in December
Jefferson, TX
- Average rainfall in December: 3.5"
The wettest month (with the highest rainfall) is April (4.41").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Jefferson, TX
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in December
Jefferson, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Jefferson, TX
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Jefferson, TX
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Jefferson, TX
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is February (12.8 days).
Average UV index in December
Jefferson, 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 and December (UV index 3).
Average cloud cover in December
Jefferson, TX
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Jefferson, TX
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Jefferson, Texas, USA
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