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 comes with a mild decrease in the average high-temperature, moving subtly from an agreeable 73°F (22.8°C) in November to an enjoyable 65.7°F (18.7°C). In Calallen, December nights witness a steady temperature drop to a fresh 52.7°F (11.5°C).Humidity
In December, the average relative humidity is 74%.Rainfall
In December, the rain falls for 12.3 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. Throughout the year, in Calallen, there are 135.9 rainfall days, and 16.65" (423mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall in Calallen.Daylight
The month with the shortest days is December, with an average of 10h and 24min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 5:34 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:46 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 4.8h 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 reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 4 in December translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December in Calallen?
How much does it rain in December?
When it does not snow?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Calallen have in December?
What is the month with the lowest UV index?
What is the UV index reading in December in Calallen?
Average temperature in December
Calallen, TX
- Average high temperature in December: 65.7°F
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (64.9°F).
- Average low temperature in December: 52.7°F
The month with the highest average low temperature is August (79°F).
The coldest month (with the lowest average low temperature) is January (50.4°F).
Average pressure in December
Calallen, 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 (29.88"Hg).
Average wind speed in December
Calallen, TX
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is May (11.1mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).
Average humidity in December
Calallen, TX
- Average humidity in December: 74%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
Calallen, TX
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is September (2.48").
The driest month (with the least rainfall) is August (0.71").
Average rainfall days in December
Calallen, TX
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is September (16.5 days).
The month with the least rainy days is August (7.1 days).
Average snowfall days in December
Calallen, TX
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Calallen, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
Calallen, TX
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is July (21.6 days).
The month with the least sunshine days is September (11.3 days).
Average UV index in December
Calallen, TX
- Average UV index in December: 4
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in December
Calallen, TX
- Average cloud cover in December: 46
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in December
Calallen, 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).
Calallen, Texas, USA
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