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 characterized by a reduction in the average high-temperature, from a chilly 45°F (7.2°C) in November to an icy 35.2°F (1.8°C). Washington experiences a consistent average temperature of 25.9°F (-3.4°C) throughout the nights in December.Humidity
The average relative humidity in December in Washington is 78%.Rainfall
December is the month with the most rainfall. Rain falls for 11.4 days and accumulates 3.27" (83mm) of precipitation.Snowfall
Months with snowfall in Washington are January through April, October through December. In Washington, in December, snow falls for 7.8 days, with typically accumulated 2.99" (76mm) of snow. In Washington, Maine, during the entire year, snow falls for 40 days and aggregates up to 18.27" (464mm) of snow.Daylight
December has the shortest days of the year in Washington, with an average of 8h and 54min of daylight.On the first day of December in Washington, sunrise is at 6:53 am and sunset at 3:59 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:08 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.6h of sunshine.UV index
The months with the lowest UV index in Washington, Maine, are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding direct sun during mid-day hours can prevent harmful UV radiation 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. 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
How cold is December in Washington?
What is the average humidity in December in Washington?
What is the wettest month in Washington?
How much does it rain in Washington in December?
How much does it snow in Washington in December?
What is the month with the shortest days in Washington?
How many hours of daylight does Washington have in December?
When are sunrise and sunset in December in Washington?
What are the months with the least sunshine in Washington?
How long on average sun shines in December in Washington?
What is the month with the lowest UV index in Washington?
What is the UV index intensity in December in Washington?
Average temperature in December
Washington, ME
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is August (72.7°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in December
Washington, ME
- Average pressure in December: 30"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Washington, ME
- Average wind speed in December: 11mph
The windiest month (with the highest average wind speed) is January (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Washington, ME
- Average humidity in December: 78%
The months with the highest relative humidity are June and July (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Washington, ME
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (1.57").
Average rainfall days in December
Washington, ME
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Washington, ME
- Average snowfall in December: 2.99"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Washington, ME
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Washington, ME
- 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: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in December
Washington, ME
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (11.4 days).
Average UV index in December
Washington, ME
- 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, November and December (UV index 2).
Average cloud cover in December
Washington, ME
- Average cloud cover in December: 51
The months with the most cloud cover are February, March, April and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Washington, ME
- 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, Maine, USA
Weather forecast for your location
2. Allow the app to use your location