December weather forecastJohnson, VT
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Johnson, Vermont, with an average temperature ranging between max 28.6°F (-1.9°C) and min 18.5°F (-7.5°C).Temperature
The commencement of December indicates a shift in the average high-temperature, receding from November's icy 39.9°F (4.4°C) to a subzero cold 28.6°F (-1.9°C). An average low-temperature of 18.5°F (-7.5°C) is noted during the month of December.Humidity
In December, the average relative humidity is 87%.Rainfall
In Johnson, during December, the rain falls for 10.1 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Johnson, during the entire year, the rain falls for 167.6 days and collects up to 33.31" (846mm) of precipitation.Snowfall
Months with snowfall in Johnson are January through May, October through December. In Johnson, during December, snow falls for 19.5 days and regularly aggregates up to 10.04" (255mm) of snow. In Johnson, during the entire year, snow falls for 102.9 days and aggregates up to 62.68" (1592mm) of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year in Johnson.On the first day of the month, sunrise is at 7:08 am and sunset at 4:11 pm. On the last day of December, in Johnson, sunrise is at 7:27 am and sunset at 4:20 pm EST.
Sunshine
The average sunshine in December in Johnson is 2.9h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Johnson, VT
- Average high temperature in December: 28.6°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in December
Johnson, VT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Johnson, VT
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Johnson, VT
- Average humidity in December: 87%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Johnson, VT
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in December
Johnson, VT
- Average rainfall days in December: 10.1 days
The months with the highest number of rainy days are June and July (18.6 days).
The month with the least rainy days is February (6.2 days).
Average snowfall in December
Johnson, VT
- Average snowfall in December: 10.04"
The month with the highest snowfall is January (14.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Johnson, VT
- Average snowfall days in December: 19.5 days
The month with the highest number of snowfall days is January (22.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Johnson, VT
- Average daylight in December: 8h and 54min
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: 2h and 54min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
Johnson, VT
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (5.3 days).
Average UV index in December
Johnson, VT
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Johnson, VT
- Average cloud cover in December: 72
The months with the most cloud cover are January and February (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Johnson, VT
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
