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 aligns with a minor decrease in average high-temperatures, from November's refreshing 60.1°F (15.6°C) to a fresh 53.4°F (11.9°C). Throughout December, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 46.4°F (8°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In Grandy, in December, during 12.2 rainfall days, 3.39" (86mm) of precipitation is typically accumulated. Throughout the year, there are 173.9 rainfall days, and 37.24" (946mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.8 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in Grandy, there are 3.7 snowfall days, and 0.59" (15mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:56 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:59 pm EST.
Sunshine
In Grandy, the average sunshine in December is 5.5h.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 during December translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grandy in December?
What is the average humidity in December in Grandy?
How much does it rain in Grandy in December?
When does it start snowing?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index in Grandy?
What is the UV index reading in December?
Average temperature in December
Grandy, NC
- Average high temperature in December: 53.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in December: 46.4°F
The month with the highest average low temperature is July (76.6°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).
Average pressure in December
Grandy, NC
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Grandy, NC
- Average wind speed in December: 12.9mph
The windiest month (with the highest average wind speed) is March (14mph).
The calmest month (with the lowest average wind speed) is August (9.9mph).
Average humidity in December
Grandy, NC
- Average humidity in December: 77%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are October and November (74%).
Average rainfall in December
Grandy, NC
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is August (4.02").
The driest month (with the least rainfall) is January (2.24").
Average rainfall days in December
Grandy, NC
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (11.6 days).
Average snowfall in December
Grandy, NC
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Grandy, NC
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Grandy, NC
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 24min).
Average sunshine days in December
Grandy, NC
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is December (17.4 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in December
Grandy, NC
- 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, February and December (UV index 3).
Average cloud cover in December
Grandy, NC
- Average cloud cover in December: 41
The month with the most cloud cover is March (Cloud cover 44).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility in December
Grandy, NC
- 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).
Grandy, North Carolina, USA
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