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 weather is marked by a drop in the average high-temperature, falling from a fresh 52.5°F (11.4°C) in November to a frosty 42.8°F (6°C). During December nights, Upper Flats records an average temperature of 31.1°F (-0.5°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Upper Flats, during December, the rain falls for 12.4 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Upper Flats, during the entire year, the rain falls for 170.5 days and collects up to 33.39" (848mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Upper Flats, West Virginia. In Upper Flats, in December, during 8.1 snowfall days, 2.28" (58mm) of snow is typically accumulated. In Upper Flats, during the entire year, snow falls for 39.1 days and aggregates up to 13.35" (339mm) of snow.Daylight
The month with the shortest days in Upper Flats is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:28 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:16 pm EST.
Sunshine
In December, the average sunshine in Upper Flats is 3.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Upper Flats. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
How cold is December in Upper Flats?
What is the average humidity in December in Upper Flats?
How many days does it rain in December in Upper Flats?
How many days does it snow in December in Upper Flats?
What is the month with the shortest days in Upper Flats?
What is the average length of the day in December in Upper Flats?
When is the sunrise / sunset in December in Upper Flats?
How many hours of sunshine does Upper Flats have in December?
What are the months with the lowest UV index in Upper Flats?
What is the UV index reading in December in Upper Flats?
Average temperature in December
Upper Flats, WV
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Upper Flats, WV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Upper Flats, WV
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
Upper Flats, WV
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Upper Flats, WV
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Upper Flats, WV
- Average rainfall days in December: 12.4 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in December
Upper Flats, WV
- Average snowfall in December: 2.28"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Upper Flats, WV
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Upper Flats, WV
- Average daylight in December: 9h and 3min
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: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Upper Flats, WV
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (9.4 days).
Average UV index in December
Upper Flats, WV
- 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
Upper Flats, WV
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Upper Flats, WV
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Upper Flats, West Virginia, USA
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