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
The advent of December brings a subtle shift in temperature, with the average high moving from a refreshing 66.7°F (19.3°C) in November to a moderate 58.6°F (14.8°C). During December, Killeen records a consistent average nighttime temperature of 43.2°F (6.2°C).Humidity
The average relative humidity in December is 70%.Rainfall
In Killeen, in December, during 9.5 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Killeen, during the entire year, the rain falls for 130.1 days and collects up to 23.07" (586mm) of precipitation.Snowfall
In Killeen, snow does not fall in March through December.Daylight
December has the shortest days of the year, with an average of 10h and 12min of daylight.On the first day of December, sunrise is at 7:12 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:39 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.4h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 in December translates into this advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Opt for tightly woven and loose clothing to enhance protection from the Sun. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Killeen in December?
What is the average humidity in December?
How many days does it rain in December?
When it does not snow?
Does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Killeen have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Killeen have in December?
What is the month with the lowest UV index in Killeen?
What is the UV index reading in December?
Average temperature in December
Killeen, TX
- Average high temperature in December: 58.6°F
The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in December: 43.2°F
The month with the highest average low temperature is August (76.1°F).
The coldest month (with the lowest average low temperature) is January (41.2°F).
Average pressure in December
Killeen, TX
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Killeen, TX
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is March (10.6mph).
The calmest month (with the lowest average wind speed) is September (7.1mph).
Average humidity in December
Killeen, TX
- Average humidity in December: 70%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (56%).
Average rainfall in December
Killeen, TX
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is November (0.98").
Average rainfall days in December
Killeen, TX
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is September (14.3 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Killeen, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Killeen, TX
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.9 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
Killeen, TX
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Killeen, TX
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is September (13.5 days).
Average UV index in December
Killeen, TX
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Killeen, TX
- Average cloud cover in December: 39
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Killeen, 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).
Killeen, Texas, USA
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