December weather forecast
North Yelm, WA

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Weather in December

The first month of the winter, December, is also a frosty month in North Yelm, Washington, with an average temperature fluctuating between 43°F (6.1°C) and 32.9°F (0.5°C).

Temperature

In North Yelm, December is the coldest month, with temperatures averaging a high of 43°F (6.1°C) and a low of 32.9°F (0.5°C).

Humidity

January, February, November and December, with an average relative humidity of 87%, are the most humid months in North Yelm, Washington.

Rainfall

December is the month with the most rainfall. Rain falls for 18.9 days and accumulates 5.28" (134mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in North Yelm. In North Yelm, in December, during 1.1 snowfall days, 0.2" (5mm) of snow is typically accumulated. Throughout the year, in North Yelm, there are 9 snowfall days, and 6.38" (162mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 36min of daylight.
On the first day of the month, sunrise is at 7:36 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:55 am and sunset at 4:31 pm PST.

Sunshine

The months with the least sunshine in North Yelm are January and December, with an average of 4h of sunshine.

UV index

The months with the lowest UV index in North Yelm are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests this advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in North Yelm?

The lowest temperatures are recorded in December, with averages reaching a high of 43°F (6.1°C) and a low of 32.9°F (0.5°C).

How cold does it get in North Yelm in December?

North Yelm in December has an average high-temperature of 43°F (6.1°C) and an average low-temperature of 32.9°F (0.5°C).

What are the most humid months in North Yelm?

January, February, November and December, with an average relative humidity of 87%, are most humid months in North Yelm.

What is the average humidity in December in North Yelm?

The average relative humidity in December is 87%.

What is the rainiest month in North Yelm?

The month with the most rainfall in North Yelm, Washington, is December, when the rain falls for 18.9 days and typically aggregates up to 5.28" (134mm) of precipitation.

How many days does it rain in December in North Yelm?

In December, in North Yelm, the rain falls for 18.9 days. Throughout December, 5.28" (134mm) of precipitation is accumulated.

How many days does it snow in December in North Yelm?

In North Yelm, Washington, during December, snow falls for 1.1 days and regularly aggregates up to 0.2" (5mm) of snow.

What is the month with the shortest days in North Yelm?

The month with the shortest days in North Yelm, Washington, is December, with an average of 8h and 36min of daylight.

How many hours of daylight does North Yelm have in December?

The average day length in December is 8h and 35min.

When is the sunrise / sunset in December in North Yelm?

On the first day of December, sunrise is at 7:36 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:31 pm PST.

What is the month with the least sunshine in North Yelm?

The months with the least sunshine in North Yelm are January and December, with an average of 4h of sunshine.

How long on average sun shines in December in North Yelm?

In December, the average sunshine duration in North Yelm, Washington, is 4h.

When is the lowest UV index in North Yelm?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in North Yelm.

How high is the UV index in December in North Yelm?

The average daily maximum UV index in December in North Yelm, Washington, is 2. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
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
North Yelm, WA

Average temperature in December - North Yelm, WA
  • Average high temperature in December: 43°F

The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (43°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).

Average pressure in December
North Yelm, WA

Average pressure in December - North Yelm, WA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in December
North Yelm, WA

Average wind speed in December - North Yelm, WA
  • Average wind speed in December: 4.6mph

The windiest month (with the highest average wind speed) is January (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

Average humidity in December
North Yelm, WA

Average humidity in December - North Yelm, WA
  • Average humidity in December: 87%

The months with the highest relative humidity are January, February, November and December (87%).
The month with the lowest relative humidity is July (70%).

Average rainfall in December
North Yelm, WA

Average rainfall in December - North Yelm, WA
  • Average rainfall in December: 5.28"

The wettest month (with the highest rainfall) is December (5.28").
The driest month (with the least rainfall) is July (0.39").

Average rainfall days in December
North Yelm, WA

Average rainfall days in December - North Yelm, WA
  • Average rainfall days in December: 18.9 days

The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).

Average snowfall in December
North Yelm, WA

Average snowfall in December - North Yelm, WA
  • Average snowfall in December: 0.2"

The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
North Yelm, WA

Average snowfall days in December - North Yelm, WA
  • Average snowfall days in December: 1.1 days

The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
North Yelm, WA

Average daylight in December / Average sunshine in December - North Yelm, WA
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in December: 4h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).

Average sunshine days in December
North Yelm, WA

Average sunshine days in December - North Yelm, WA
  • Average sunshine days in December: 10.2 days

The month with the most sunshine days is August (23.4 days).
The months with the least sunshine days are February and March (8.8 days).

Average UV index in December
North Yelm, WA

Average UV index in December - North Yelm, WA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
North Yelm, WA

Average cloud cover in December - North Yelm, WA
  • Average cloud cover in December: 59

The months with the most cloud cover are January, February, March and December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in December
North Yelm, WA

Average visibility in December - North Yelm, WA
  • Average visibility in December: 4mi

The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).

North Yelm, Washington, USA

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