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 witnesses a gentle descent in average high-temperature, descending from November's cool 53.2°F (11.8°C) to a frosty 44.8°F (7.1°C). Throughout the month of December, Sias reports a steady low-temperature average of 32.7°F (0.4°C).Humidity
In Sias, the average relative humidity in December is 80%.Rainfall
In December, in Sias, the rain falls for 12.5 days. Throughout December, 2.36" (60mm) of precipitation is accumulated. In Sias, during the entire year, the rain falls for 166.7 days and collects up to 26.57" (675mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Sias. In Sias, in December, snow falls for 7.6 days, with typically accumulated 3.23" (82mm) of snow. In Sias, during the entire year, snow falls for 38.3 days and aggregates up to 14.53" (369mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:26 am and sunset at 5:08 pm. On the last day of December, in Sias, West Virginia, sunrise is at 7:44 am and sunset at 5:18 pm EST.
Sunshine
In Sias, the average sunshine in December is 4.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sias. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What are December temperatures in Sias?
What is the average humidity in December in Sias?
How much does it rain in Sias in December?
How much does it snow in Sias in December?
What is the month with the shortest days in Sias?
How many hours of daylight does Sias have in December?
What time are sunrise and sunset in December in Sias?
How long on average sun shines in December in Sias?
What is the month with the lowest UV index in Sias?
How high is the UV index in December in Sias?
Average temperature in December
Sias, WV
- Average high temperature in December: 44.8°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Sias, WV
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in December
Sias, WV
- Average wind speed in December: 6mph
The windiest months (with the highest average wind speed) are January, February and April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Sias, WV
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are August and November (75%).
Average rainfall in December
Sias, WV
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is September (1.38").
Average rainfall days in December
Sias, WV
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in December
Sias, WV
- Average snowfall in December: 3.23"
The month with the highest snowfall is January (3.82").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Sias, WV
- Average snowfall days in December: 7.6 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sias, WV
- Average daylight in December: 9h and 4min
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: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Sias, WV
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Sias, 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
Sias, WV
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Sias, 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).
Sias, West Virginia, USA
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