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
December is the month when Washington sees the lowest average temperatures, with a high of 47.7°F (8.7°C) and a low of 31.6°F (-0.2°C).Humidity
In December, the average relative humidity is 57%.Rainfall
In December, in Washington, the rain falls for 6.8 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. Throughout the year, in Washington, Utah, there are 66.6 rainfall days, and 6.97" (177mm) of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall in Washington. In December, in Washington, it is snowing for 0.8 days. Throughout December, 0.16" (4mm) of snow is accumulated. Throughout the year, in Washington, there are 2.4 snowfall days, and 0.59" (15mm) of snow is accumulated.Daylight
December has the shortest days of the year in Washington, Utah, with an average of 9h and 42min of daylight.On the first day of December in Washington, sunrise is at 7:29 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:27 pm MST.
Sunshine
December has the least sunshine of the year in Washington, with an average of 7h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Washington?
What are the temperatures in Washington in December?
What is the average humidity in December in Washington?
How many days does it rain in December in Washington?
How many days does it snow in December in Washington?
What is the month with the shortest days in Washington?
What is the average length of the day in December in Washington?
What time are sunrise and sunset in December in Washington?
What is the month with the least sunshine in Washington?
How many hours of sunshine does Washington have in December?
When is the lowest UV index in Washington?
What is the UV index intensity in December in Washington?
Average temperature in December
Washington, UT
- Average high temperature in December: 47.7°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (47.7°F).
- Average low temperature in December: 31.6°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is December (31.6°F).
Average pressure in December
Washington, UT
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Washington, UT
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are August and December (5.3mph).
Average humidity in December
Washington, UT
- Average humidity in December: 57%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).
Average rainfall in December
Washington, UT
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is March (0.98").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in December
Washington, UT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.8 days).
Average snowfall in December
Washington, UT
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Washington, UT
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is December (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Washington, UT
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in December
Washington, UT
- Average sunshine days in December: 22.8 days
The month with the most sunshine days is June (26.3 days).
The month with the least sunshine days is July (17.9 days).
Average UV index in December
Washington, UT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Washington, UT
- Average cloud cover in December: 21
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in December
Washington, UT
- 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).
Washington, Utah, USA
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