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
With average high and low temperatures of 27°F (-2.8°C) and 12.2°F (-11°C) respectively, December is Washam's coldest month.Humidity
In December, the average relative humidity is 76%.Rainfall
In Washam, in December, it is raining for 5.5 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, in Washam, there are 93.9 rainfall days, and 14.17" (360mm) of precipitation is accumulated.Snowfall
Months with snowfall in Washam are January through June, September through December. In December, in Washam, Wyoming, it is snowing for 13.4 days. Throughout December, 6.18" (157mm) of snow is accumulated. In Washam, during the entire year, snow falls for 84.4 days and aggregates up to 56.22" (1428mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:25 am and sunset at 4:51 pm. On the last day of December, in Washam, sunrise is at 7:43 am and sunset at 5:00 pm MST.
Sunshine
January and December, with an average of 6.4h of sunshine, are months with the least sunshine in Washam.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Washam?
How cold is it in Washam in December?
What is the average humidity in December in Washam?
How much does it rain in Washam in December?
How many days does it snow in December in Washam?
What is the month with the shortest days in Washam?
What is the average length of the day in December in Washam?
When are sunrise and sunset in December in Washam?
What is the month with the least sunshine in Washam?
How many hours of sunshine does Washam have in December?
When is the lowest UV index in Washam?
What is the UV index reading in December in Washam?
Average temperature in December
Washam, WY
- Average high temperature in December: 27°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is December (27°F).
- Average low temperature in December: 12.2°F
The month with the highest average low temperature is July (53.2°F).
The coldest month (with the lowest average low temperature) is December (12.2°F).
Average pressure in December
Washam, WY
- Average pressure in December: 30.23"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Washam, WY
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Washam, WY
- Average humidity in December: 76%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in December
Washam, WY
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Washam, WY
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is November (3 days).
Average snowfall in December
Washam, WY
- Average snowfall in December: 6.18"
The month with the highest snowfall is March (9.57").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Washam, WY
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is February (13.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Washam, WY
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).
Average sunshine days in December
Washam, WY
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in December
Washam, WY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Washam, WY
- Average cloud cover in December: 32
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in December
Washam, WY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Washam, Wyoming, USA
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