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
In December, the average high-temperature goes from a cold 41.5°F (5.3°C) in November to a subzero cold 30°F (-1.1°C). December brings an average low-temperature of 20.5°F (-6.4°C) to Fairfax.Humidity
The average relative humidity in December is 84%.Rainfall
In Fairfax, in December, during 12 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, there are 172.5 rainfall days, and 28.07" (713mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Fairfax, during December, snow falls for 18.2 days and regularly aggregates up to 7.2" (183mm) of snow. In Fairfax, during the entire year, snow falls for 92.6 days and aggregates up to 43.98" (1117mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 7:09 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:21 pm EST.
Sunshine
In December, the average sunshine is 3.5h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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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 Fairfax in December?
What is the month with the shortest days?
How many hours of daylight does Fairfax have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Fairfax have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Fairfax, VT
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 20.5°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in December
Fairfax, VT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Fairfax, VT
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Fairfax, VT
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Fairfax, VT
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in December
Fairfax, VT
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is January (9 days).
Average snowfall in December
Fairfax, VT
- Average snowfall in December: 7.2"
The month with the highest snowfall is February (9.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fairfax, VT
- Average snowfall days in December: 18.2 days
The month with the highest number of snowfall days is January (20.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Fairfax, VT
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).
Average sunshine days in December
Fairfax, VT
- Average sunshine days in December: 6.8 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (6 days).
Average UV index in December
Fairfax, VT
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Fairfax, VT
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Fairfax, VT
- Average visibility in December: 5mi
The months with the highest visibility are May, July and August (6mi).
The months with the lowest visibility are January, February and March (4mi).
Fairfax, Vermont, USA
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