December weather forecastGrimes, VA
December
Weather in December
December, the first month of the winter in Grimes, is also a frosty month, with an average temperature varying between 29.7°F (-1.3°C) and 43.2°F (6.2°C).Temperature
With the onset of December, Grimes experiences a modest temperature adjustment, with the average high-temperature gently receding from a fresh 52.2°F (11.2°C) in November to a frosty 43.2°F (6.2°C). In Grimes, December's nights observe an average temperature dip to a freezing cold 29.7°F (-1.3°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In Grimes, during December, the rain falls for 11 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 167.2 rainfall days, and 29.61" (752mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 4.5 days. Throughout December, 3.15" (80mm) of snow is accumulated. In Grimes, during the entire year, snow falls for 26.2 days and aggregates up to 17.83" (453mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:13 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:59 pm EST.
Sunshine
In Grimes, the average sunshine in December is 5.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grimes, VA
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).
Average pressure in December
Grimes, VA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Grimes, VA
- Average wind speed in December: 6.1mph
The windiest month (with the highest average wind speed) is March (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Grimes, VA
- Average humidity in December: 78%
The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is July (73%).
Average rainfall in December
Grimes, VA
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.97").
Average rainfall days in December
Grimes, VA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Grimes, VA
- Average snowfall in December: 3.15"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grimes, VA
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grimes, VA
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Grimes, VA
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10 days).
Average UV index in December
Grimes, 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, February, November and December (UV index 2).
Average cloud cover in December
Grimes, VA
- Average cloud cover in December: 46
The months with the most cloud cover are February, March and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Grimes, VA
- Average visibility in December: 6mi
The months with the highest visibility are February, April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, March, May, September and October (5mi).
