December weather forecast
Edwall, WA

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Weather in December

The first month of the winter, December, is still a freezing cold month in Edwall, Washington, with an average temperature fluctuating between 21.9°F (-5.6°C) and 31.5°F (-0.3°C).

Temperature

December is the coldest month, with the temperature often reaching an average high of 31.5°F (-0.3°C) and an average low of 21.9°F (-5.6°C).

Humidity

In Edwall, the average relative humidity in December is 86%.

Rainfall

In Edwall, during December, the rain falls for 9.1 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, there are 127.9 rainfall days, and 15.71" (399mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Edwall are January through May, September through December. In Edwall, during December, snow falls for 15.9 days and regularly aggregates up to 9.02" (229mm) of snow. Throughout the year, there are 65.1 snowfall days, and 37.36" (949mm) of snow is accumulated.

Daylight

With an average of 8h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:02 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:10 pm PST.

Sunshine

The month with the least sunshine is December, with an average of 4.1h of sunshine.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

Edwall's coldest temperatures are experienced in December, with average high temperatures of 31.5°F (-0.3°C) and lows of 21.9°F (-5.6°C).

How cold is it in December?

In Edwall, in December, the average high-temperature is 31.5°F (-0.3°C), and the average low-temperature is 21.9°F (-5.6°C).

What is the average humidity in December?

In December, the average relative humidity is 86%.

How many days does it rain in December?

In Edwall, in December, it is raining for 9.1 days, with typically 1.89" (48mm) of accumulated precipitation.

How many days does it snow in December?

In Edwall, in December, during 15.9 snowfall days, 9.02" (229mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 8h and 30min of daylight.

How many hours of daylight does Edwall have in December?

In December, the average day length is 8h and 31min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:19 am and sunset at 4:02 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:10 pm PST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 4.1h of sunshine.

How long on average sun shines in December?

In Edwall, the average sunshine duration in December is 4.1h.

What is the month with the lowest UV index?

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December?

In Edwall, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Edwall, WA

Average temperature in December - Edwall, WA
  • Average high temperature in December: 31.5°F

The warmest months (with the highest average high temperature) are July and August (83.3°F).
The month with the lowest average high temperature is December (31.5°F).

  • Average low temperature in December: 21.9°F

The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

Average pressure in December
Edwall, WA

Average pressure in December - Edwall, WA
  • Average pressure in December: 30.16"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).

Average wind speed in December
Edwall, WA

Average wind speed in December - Edwall, WA
  • Average wind speed in December: 6.6mph

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in December
Edwall, WA

Average humidity in December - Edwall, WA
  • Average humidity in December: 86%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).

Average rainfall in December
Edwall, WA

Average rainfall in December - Edwall, WA
  • Average rainfall in December: 1.89"

The wettest month (with the highest rainfall) is March (1.97").
The driest months (with the least rainfall) are July and August (0.31").

Average rainfall days in December
Edwall, WA

Average rainfall days in December - Edwall, WA
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (5.2 days).

Average snowfall in December
Edwall, WA

Average snowfall in December - Edwall, WA
  • Average snowfall in December: 9.02"

The month with the highest snowfall is January (10").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Edwall, WA

Average snowfall days in December - Edwall, WA
  • Average snowfall days in December: 15.9 days

The month with the highest number of snowfall days is December (15.9 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Edwall, WA

Average daylight in December / Average sunshine in December - Edwall, WA
  • Average daylight in December: 8h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

Average sunshine days in December
Edwall, WA

Average sunshine days in December - Edwall, WA
  • Average sunshine days in December: 12.8 days

The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (10.2 days).

Average UV index in December
Edwall, WA

Average UV index in December - Edwall, WA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December
Edwall, WA

Average cloud cover in December - Edwall, WA
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 12).

Average visibility in December
Edwall, WA

Average visibility in December - Edwall, WA
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Edwall, Washington, USA

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