December weather forecastCallao, VA
December
Weather in December
The first month of the winter, December, is also a frosty month in Callao, Virginia, with an average temperature varying between 38.1°F (3.4°C) and 47.3°F (8.5°C).Temperature
Callao experiences a moderate temperature shift at the start of December, with average high-temperatures adjusting a bit from a cool 55°F (12.8°C) in November to a frosty 47.3°F (8.5°C). During December, Callao's temperature falls to a steady low-temperature average of 38.1°F (3.4°C).Humidity
In Callao, Virginia, the average relative humidity in December is 76%.Rainfall
In December, the rain falls for 8.8 days. Throughout December, 1.14" (29mm) of precipitation is accumulated. In Callao, during the entire year, the rain falls for 147.5 days and collects up to 20.16" (512mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Callao, Virginia, in December, during 0.8 snowfall days, 0.24" (6mm) of snow is typically accumulated. Throughout the year, in Callao, there are 6 snowfall days, and 1.42" (36mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Callao, Virginia.On the first day of December, sunrise is at 7:03 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:57 pm EST.
Sunshine
In Callao, the average sunshine in December is 5.3h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Callao. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Callao, VA
- Average high temperature in December: 47.3°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in December: 38.1°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in December
Callao, VA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Callao, VA
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in December
Callao, VA
- Average humidity in December: 76%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (73%).
Average rainfall in December
Callao, VA
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in December
Callao, VA
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (7.4 days).
Average snowfall in December
Callao, VA
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Callao, VA
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (2.3 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
Callao, VA
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Callao, VA
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in December
Callao, VA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Callao, VA
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Callao, VA
- 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).
