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
The arrival of December signals a subtle shift in temperature, down from a cool 50.4°F (10.2°C) in November to a wintry 41.7°F (5.4°C). During December, the average low-temperature is a freezing cold 29.8°F (-1.2°C).Humidity
In Santiago, the average relative humidity in December is 82%.Rainfall
In December, in Santiago, West Virginia, the rain falls for 12.7 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In Santiago, during the entire year, the rain falls for 189.1 days and collects up to 37.83" (961mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Santiago, West Virginia. In December, in Santiago, West Virginia, it is snowing for 11.3 days. Throughout December, 5.51" (140mm) of snow is accumulated. In Santiago, during the entire year, snow falls for 54.9 days and aggregates up to 28.82" (732mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in Santiago.On the first day of December, sunrise is at 7:22 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:07 pm EST.
Sunshine
In Santiago, the average sunshine in December 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 Santiago, West Virginia. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Santiago during December?
What is the average humidity in December in Santiago?
How much does it rain in Santiago in December?
How many days does it snow in December in Santiago?
What is the month with the shortest days in Santiago?
What is the average length of the day in December in Santiago?
What time are sunrise and sunset in December in Santiago?
How many hours of sunshine does Santiago have in December?
When is the lowest UV index in Santiago?
What is the UV index reading in December in Santiago?
Average temperature in December
Santiago, WV
- Average high temperature in December: 41.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in December
Santiago, WV
- Average pressure in December: 30.12"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
Santiago, 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 (4.1mph).
Average humidity in December
Santiago, WV
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (84%).
The months with the lowest relative humidity are August and November (77%).
Average rainfall in December
Santiago, WV
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are September and November (2.2").
Average rainfall days in December
Santiago, WV
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is May (21.8 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in December
Santiago, WV
- Average snowfall in December: 5.51"
The month with the highest snowfall is February (6.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Santiago, WV
- Average snowfall days in December: 11.3 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Santiago, 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 5min
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 18min).
Average sunshine days in December
Santiago, WV
- Average sunshine days in December: 10.9 days
The month with the most sunshine days is November (14.7 days).
The month with the least sunshine days is May (7.7 days).
Average UV index in December
Santiago, WV
- Average UV index in December: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Santiago, WV
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Santiago, WV
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is January (4mi).
Santiago, West Virginia, USA
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