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 coldest time of the year is December, with temperatures averaging a high of 35.1°F (1.7°C) and a low of 21.6°F (-5.8°C).Humidity
In December, the average relative humidity is 64%.Rainfall
In Guernsey, during December, the rain falls for 3.8 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Guernsey, during the entire year, the rain falls for 90.8 days and collects up to 11.57" (294mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Guernsey. In Guernsey, in December, during 8.1 snowfall days, 3.15" (80mm) of snow is typically accumulated. Throughout the year, there are 46.4 snowfall days, and 27.13" (689mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:08 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:36 pm MST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.6h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 2 in December leads to these guidelines:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Guernsey have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine in Guernsey?
How long on average sun shines in December?
When is the lowest UV index in Guernsey?
What is the UV index reading in December?
Average temperature in December
Guernsey, WY
- Average high temperature in December: 35.1°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (35.1°F).
- Average low temperature in December: 21.6°F
The month with the highest average low temperature is July (62.8°F).
The coldest months (with the lowest average low temperature) are February and December (21.6°F).
Average pressure in December
Guernsey, WY
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Guernsey, WY
- Average wind speed in December: 14.1mph
The windiest month (with the highest average wind speed) is January (15mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in December
Guernsey, WY
- Average humidity in December: 64%
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Guernsey, WY
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in December
Guernsey, WY
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in December
Guernsey, WY
- Average snowfall in December: 3.15"
The month with the highest snowfall is April (4.45").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Guernsey, WY
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Guernsey, WY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 6h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 36min).
Average sunshine days in December
Guernsey, WY
- Average sunshine days in December: 21.4 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is April (14.5 days).
Average UV index in December
Guernsey, WY
- Average UV index in December: 2
The months with the highest UV index are 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
Guernsey, WY
- Average cloud cover in December: 29
The month with the most cloud cover is April (Cloud cover 31).
The months with the least cloud cover are August and September (Cloud cover 16).
Average visibility in December
Guernsey, WY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Guernsey, Wyoming, USA
Weather forecast for your location
2. Allow the app to use your location