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, with average temperatures reaching a high of 29.5°F (-1.4°C) and a low of 18.1°F (-7.7°C), is the coldest month.Humidity
In December, the average relative humidity in Addy, Washington, is 90%.Rainfall
In December, the rain falls for 11 days. Throughout December, 2.05" (52mm) of precipitation is accumulated. In Addy, Washington, during the entire year, the rain falls for 125.6 days and collects up to 15.59" (396mm) of precipitation.Snowfall
Months with snowfall in Addy are January through May, September through December. In Addy, in December, snow falls for 16.9 days, with typically accumulated 9.88" (251mm) of snow. In Addy, during the entire year, snow falls for 69.4 days and aggregates up to 42.2" (1072mm) of snow.Daylight
December has the shortest days of the year in Addy, Washington, with an average of 8h and 24min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 3:58 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:06 pm PST.
Sunshine
In December, the average sunshine in Addy is 3.8h.UV index
The months with the lowest UV index are February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 suggests these recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Addy?
How cold is it in Addy in December?
What is the average humidity in December in Addy?
How many days does it rain in December in Addy?
How many days does it snow in December in Addy?
What is the month with the shortest days in Addy?
What is the average length of the day in December in Addy?
When are sunrise and sunset in December in Addy?
How many hours of sunshine does Addy have in December?
What is the month with the lowest UV index in Addy?
What is the UV index reading in December in Addy?
Average temperature in December
Addy, WA
- Average high temperature in December: 29.5°F
The warmest month (with the highest average high temperature) is August (82.2°F).
The month with the lowest average high temperature is December (29.5°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average pressure in December
Addy, WA
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Addy, WA
- Average wind speed in December: 3.5mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are January, February and December (3.5mph).
Average humidity in December
Addy, WA
- Average humidity in December: 90%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Addy, WA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is January (2.2").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in December
Addy, WA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is August (3.6 days).
Average snowfall in December
Addy, WA
- Average snowfall in December: 9.88"
The month with the highest snowfall is January (12.05").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Addy, WA
- Average snowfall days in December: 16.9 days
The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Addy, WA
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Addy, WA
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is August (26.5 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in December
Addy, WA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in December
Addy, WA
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Addy, WA
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Addy, Washington, USA
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