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 onset brings a slight change in high-temperatures, falling from a cool 50.7°F (10.4°C) in November to a cold 41.4°F (5.2°C). Sistersville's temperature drops to an average low of 29.3°F (-1.5°C) during the nights of December.Humidity
In Sistersville, the average relative humidity in December is 83%.Rainfall
In Sistersville, in December, it is raining for 13.5 days, with typically 2.13" (54mm) of accumulated precipitation. In Sistersville, during the entire year, the rain falls for 176.6 days and collects up to 25.91" (658mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Sistersville, in December, snow falls for 10.2 days, with typically accumulated 2.05" (52mm) of snow. In Sistersville, during the entire year, snow falls for 46.7 days and aggregates up to 11.38" (289mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:26 am and sunset at 5:00 pm. On the last day of December, sunrise is at 7:44 am and sunset at 5:10 pm EST.
Sunshine
In Sistersville, the average sunshine in December is 3.7h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Sistersville have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Sistersville, WV
- Average high temperature in December: 41.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in December
Sistersville, WV
- Average pressure in December: 30.12"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
Sistersville, WV
- Average wind speed in December: 6.4mph
The windiest months (with the highest average wind speed) are January and February (7mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Sistersville, WV
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (77%).
Average rainfall in December
Sistersville, WV
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Sistersville, WV
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (10.2 days).
Average snowfall in December
Sistersville, WV
- Average snowfall in December: 2.05"
The month with the highest snowfall is January (3.19").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sistersville, WV
- Average snowfall days in December: 10.2 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Sistersville, WV
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Sistersville, WV
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is November (16.9 days).
The months with the least sunshine days are January and February (8.7 days).
Average UV index in December
Sistersville, WV
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Sistersville, WV
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Sistersville, WV
- Average visibility in December: 5mi
The month with the highest visibility is November (6mi).
The month with the lowest visibility is January (4mi).
Sistersville, West Virginia, USA
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