December weather forecast
Maryhill, WA

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Weather in December

The first month of the winter, December, is also an icy month in Maryhill, Washington, with an average temperature ranging between min 27°F (-2.8°C) and max 37.4°F (3°C).

Temperature

In Maryhill, December is the coldest month, with temperatures averaging a high of 37.4°F (3°C) and a low of 27°F (-2.8°C).

Humidity

The average relative humidity in December is 83%.

Rainfall

In Maryhill, in December, during 12.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Maryhill, during the entire year, the rain falls for 112.2 days and collects up to 10.91" (277mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in Maryhill. In Maryhill, in December, during 3.9 snowfall days, 2.09" (53mm) of snow is typically accumulated. In Maryhill, Washington, during the entire year, snow falls for 12.6 days and aggregates up to 7.6" (193mm) of snow.

Daylight

December has the shortest days of the year in Maryhill, with an average of 8h and 48min of daylight.
On the first day of December in Maryhill, sunrise is at 7:24 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:29 pm PST.

Sunshine

The average sunshine in December is 5.1h.

UV index

The months with the lowest UV index 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 vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

What part of the year is the coldest in Maryhill?

December is the coldest month in Maryhill, exhibiting average temperatures of 37.4°F (3°C) at the peak and 27°F (-2.8°C) at the base.

How cold is December in Maryhill?

Maryhill in December has an average high-temperature of 37.4°F (3°C) and an average low-temperature of 27°F (-2.8°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in August is appraised at 84.2°F (29°C).

What is the average humidity in December in Maryhill?

In Maryhill, Washington, the average relative humidity in December is 83%.

How many days does it rain in December in Maryhill?

In Maryhill, during December, the rain falls for 12.6 days and regularly aggregates up to 1.73" (44mm) of precipitation.

How much does it snow in Maryhill in December?

In Maryhill, Washington, in December, snow falls for 3.9 days, with typically accumulated 2.09" (53mm) of snow.

What is the month with the shortest days in Maryhill?

The month with the shortest days in Maryhill, Washington, is December, with an average of 8h and 48min of daylight.

What is the average length of the day in December in Maryhill?

In Maryhill, the average day length in December is 8h and 45min.

What time are sunrise and sunset in December in Maryhill?

On the first day of December in Maryhill, sunrise is at 7:24 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:29 pm PST.

How many hours of sunshine does Maryhill have in December?

In Maryhill, the average sunshine duration in December is 5.1h.

What are the months with the lowest UV index in Maryhill?

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

What is the UV index intensity in December in Maryhill?

The average daily maximum UV index in December in Maryhill, Washington, is 2. A UV Index estimate of 2, and below, represents a low health risk from 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
Maryhill, WA

Average temperature in December - Maryhill, WA
  • Average high temperature in December: 37.4°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (37.4°F).

  • Average low temperature in December: 27°F

The month with the highest average low temperature is August (57.9°F).
The coldest month (with the lowest average low temperature) is December (27°F).

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Average pressure in December
Maryhill, WA

Average pressure in December - Maryhill, WA
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).

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Average wind speed in December
Maryhill, WA

Average wind speed in December - Maryhill, WA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5mph).

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Average humidity in December
Maryhill, WA

Average humidity in December - Maryhill, WA
  • Average humidity in December: 83%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (46%).

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Average rainfall in December
Maryhill, WA

Average rainfall in December - Maryhill, WA
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is January (1.93").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in December
Maryhill, WA

Average rainfall days in December - Maryhill, WA
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (2.9 days).

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Average snowfall in December
Maryhill, WA

Average snowfall in December - Maryhill, WA
  • Average snowfall in December: 2.09"

The month with the highest snowfall is February (2.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Maryhill, WA

Average snowfall days in December - Maryhill, WA
  • Average snowfall days in December: 3.9 days

The months with the highest number of snowfall days are February and December (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Maryhill, WA
  • Average daylight in December: 8h and 5min

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

  • 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: 5h and 0min).

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Average sunshine days in December
Maryhill, WA

Average sunshine days in December - Maryhill, WA
  • Average sunshine days in December: 13.8 days

The month with the most sunshine days is July (27 days).
The month with the least sunshine days is February (12.3 days).

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Average UV index in December
Maryhill, WA

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Maryhill, WA

Average cloud cover in December - Maryhill, WA
  • Average cloud cover in December: 46

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in December
Maryhill, WA

Average visibility in December - Maryhill, 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 months with the lowest visibility are January, February and December (5mi).

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Maryhill, Washington, USA

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