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
Onset of December comes with a temperature decline, the average high falling from a comfortable 64.4°F (18°C) in November to a cool 55.2°F (12.9°C). Dennis, in December, observes a steady average low-temperature of 39.9°F (4.4°C).Humidity
The average relative humidity in December in Dennis is 66%.Rainfall
In December, the rain falls for 8 days. Throughout December, 1.38" (35mm) of precipitation is accumulated. In Dennis, during the entire year, the rain falls for 127.7 days and collects up to 26.46" (672mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Dennis, during December, snow falls for 0.6 days and regularly aggregates up to 0.35" (9mm) of snow. Throughout the year, there are 3.1 snowfall days, and 1.77" (45mm) of snow is accumulated.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:16 am and sunset at 5:25 pm. On the last day of December, sunrise is at 7:33 am and sunset at 5:36 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.9h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 3 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Dennis have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December in Dennis?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Dennis, TX
- Average high temperature in December: 55.2°F
The warmest month (with the highest average high temperature) is August (95.2°F).
The month with the lowest average high temperature is January (55°F).
- Average low temperature in December: 39.9°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in December
Dennis, 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 (29.89"Hg).
Average wind speed in December
Dennis, TX
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is September (7mph).
Average humidity in December
Dennis, TX
- Average humidity in December: 66%
The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).
Average rainfall in December
Dennis, TX
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is October (3.58").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in December
Dennis, TX
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
Dennis, TX
- Average snowfall in December: 0.35"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Dennis, TX
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1.3 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
Dennis, 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 5min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in December
Dennis, TX
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is September (14.5 days).
Average UV index in December
Dennis, 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
Dennis, TX
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in December
Dennis, 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).
Dennis, Texas, USA
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