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 proves to be the coldest month, recording an average maximum temperature of 36.1°F (2.3°C) and a minimum temperature of 25.3°F (-3.7°C).Humidity
In Emerald, the average relative humidity in December is 81%.Rainfall
In Emerald, in December, during 10.4 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Emerald, during the entire year, the rain falls for 104.5 days and collects up to 8.23" (209mm) of precipitation.Snowfall
January through March, September, November and December are months with snowfall in Emerald, Washington. December is the month with the most snowfall in Emerald. Snow falls for 5 days and accumulates 2.24" (57mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 4:15 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:24 pm PST.
Sunshine
In December, the average sunshine is 5.1h.UV index
The months with the lowest UV index in Emerald, Washington, are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To guard against the harmful effects of the Sun, minimize exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Emerald?
How cold is it in Emerald in December?
What is the average humidity in December in Emerald?
How much does it rain in Emerald in December?
What is the snowiest month in Emerald?
How much does it snow in Emerald in December?
What is the month with the shortest days in Emerald?
What is the average length of the day in December in Emerald?
When are sunrise and sunset in December in Emerald?
How long on average sun shines in December in Emerald?
What is the month with the lowest UV index in Emerald?
What is the UV index intensity in December in Emerald?
Average temperature in December
Emerald, WA
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in December: 25.3°F
The month with the highest average low temperature is August (61.5°F).
The coldest month (with the lowest average low temperature) is December (25.3°F).
Average pressure in December
Emerald, WA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in December
Emerald, WA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is December (5mph).
Average humidity in December
Emerald, WA
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in December
Emerald, WA
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in December
Emerald, WA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is July (4.1 days).
Average snowfall in December
Emerald, WA
- Average snowfall in December: 2.24"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Emerald, WA
- Average snowfall days in December: 5 days
The month with the highest number of snowfall days is December (5 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Emerald, WA
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 1min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Emerald, WA
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is July (26.2 days).
The month with the least sunshine days is March (15.4 days).
Average UV index in December
Emerald, WA
- 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
Emerald, WA
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in December
Emerald, WA
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Emerald, Washington, USA
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