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
December's arrival signals a moderate reduction in the average high-temperature, easing from a mild 60.6°F (15.9°C) in November to a cool 54.5°F (12.5°C). An average low-temperature of 39.9°F (4.4°C) is observed during December nights.Humidity
In Walnut Creek, North Carolina, the average relative humidity in December is 77%.Rainfall
In December, the rain falls for 6.6 days. Throughout December, 0.63" (16mm) of precipitation is accumulated. Throughout the year, there are 110.7 rainfall days, and 9.02" (229mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:59 pm. On the last day of December, sunrise is at 7:20 am and sunset at 5:09 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.5h of sunshine.UV index
In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the UV index of 3 transforms into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December in Walnut Creek?
How much 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 Walnut Creek 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 Walnut Creek?
What is the UV index intensity in December?
Average temperature in December
Walnut Creek, NC
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 39.9°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in December
Walnut Creek, NC
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Walnut Creek, NC
- Average wind speed in December: 7.2mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Walnut Creek, NC
- Average humidity in December: 77%
The months with the highest relative humidity are August and September (79%).
The month with the lowest relative humidity is January (73%).
Average rainfall in December
Walnut Creek, NC
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Walnut Creek, NC
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is August (15 days).
The month with the least rainy days is November (5.8 days).
Average snowfall in December
Walnut Creek, NC
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Walnut Creek, NC
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.7 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
Walnut Creek, NC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 3min
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 30min).
Average sunshine days in December
Walnut Creek, NC
- Average sunshine days in December: 22.6 days
The month with the most sunshine days is October (23.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in December
Walnut Creek, NC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Walnut Creek, NC
- Average cloud cover in December: 40
The months with the most cloud cover are February and March (Cloud cover 41).
The months with the least cloud cover are June, July and October (Cloud cover 32).
Average visibility in December
Walnut Creek, NC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Walnut Creek, North Carolina, USA
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