December weather forecast
Pomeroy, WA

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Weather in December

The first month of the winter, December, is still a cold month in Pomeroy, Washington, with an average temperature fluctuating between 25.9°F (-3.4°C) and 36.3°F (2.4°C).

Temperature

December, recording an average high temperature of 36.3°F (2.4°C) and a low temperature of 25.9°F (-3.4°C), is Pomeroy's coldest month.

Humidity

In December, the average relative humidity in Pomeroy is 80%.

Rainfall

The months with the most rainfall are March and December, with an average 1.69" (43mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Pomeroy, Washington. In December, in Pomeroy, Washington, it is snowing for 8 days. Throughout December, 3.46" (88mm) of snow is accumulated. Throughout the year, in Pomeroy, there are 32.7 snowfall days, and 16.77" (426mm) of snow is accumulated.

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year in Pomeroy.
On the first day of the month, sunrise is at 7:14 am and sunset at 4:05 pm. On the last day of December, in Pomeroy, sunrise is at 7:34 am and sunset at 4:13 pm PST.

Sunshine

The average sunshine in December in Pomeroy is 5.3h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Pomeroy, Washington. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

What is the coldest time of year in Pomeroy?

Temperature readings reach their annual highs in December, averaging 36.3°F (2.4°C) and a minimum average of 25.9°F (-3.4°C).

How cold is December in Pomeroy?

In December, the average high-temperature and low-temperature in Pomeroy, Washington, are 36.3°F (2.4°C) and 25.9°F (-3.4°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is calculated to be 82.4°F (28°C).

What is the average humidity in December in Pomeroy?

In December, the average relative humidity is 80%.

What is the rainiest month in Pomeroy?

The wettest months in Pomeroy are March and December, with an average 1.69" (43mm) of rainfall.

How many days does it rain in December in Pomeroy?

In December, in Pomeroy, the rain falls for 10.6 days. Throughout December, 1.69" (43mm) of precipitation is accumulated.

How much does it snow in Pomeroy in December?

In Pomeroy, in December, during 8 snowfall days, 3.46" (88mm) of snow is typically accumulated.

What is the month with the shortest days in Pomeroy?

With an average of 8h and 42min of daylight, December has the shortest days of the year.

How many hours of daylight does Pomeroy have in December?

The average day length in December is 8h and 40min.

When are sunrise and sunset in December in Pomeroy?

On the first day of December in Pomeroy, sunrise is at 7:14 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:13 pm PST.

How many hours of sunshine does Pomeroy have in December?

The average sunshine duration in December in Pomeroy, Washington, is 5.3h.

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

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

What is the UV index intensity in December in Pomeroy?

The average daily maximum UV index in December in Pomeroy, Washington, is 2. A UV Index reading of 2, and below, represents 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
Pomeroy, WA

Average temperature in December - Pomeroy, WA
  • Average high temperature in December: 36.3°F

The warmest month (with the highest average high temperature) is August (83.8°F).
The month with the lowest average high temperature is December (36.3°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is December (25.9°F).

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Average pressure in December
Pomeroy, WA

Average pressure in December - Pomeroy, WA
  • Average pressure in December: 30.17"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in December
Pomeroy, WA

Average wind speed in December - Pomeroy, WA
  • Average wind speed in December: 6.7mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest months (with the lowest average wind speed) are August and September (6mph).

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Average humidity in December
Pomeroy, WA

Average humidity in December - Pomeroy, WA
  • Average humidity in December: 80%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (37%).

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Average rainfall in December
Pomeroy, WA

Average rainfall in December - Pomeroy, WA
  • Average rainfall in December: 1.69"

The wettest months (with the highest rainfall) are March and December (1.69").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in December
Pomeroy, WA

Average rainfall days in December - Pomeroy, WA
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is March (15.7 days).
The month with the least rainy days is July (4.8 days).

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Average snowfall in December
Pomeroy, WA

Average snowfall in December - Pomeroy, WA
  • Average snowfall in December: 3.46"

The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Pomeroy, WA

Average snowfall days in December - Pomeroy, WA
  • Average snowfall days in December: 8 days

The months with the highest number of snowfall days are February and December (8 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Pomeroy, 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 42min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is 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
Pomeroy, WA

Average sunshine days in December - Pomeroy, WA
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (11.9 days).

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Average UV index in December
Pomeroy, WA

Average UV index in December - Pomeroy, 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, November and December (UV index 2).

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Average cloud cover in December
Pomeroy, WA

Average cloud cover in December - Pomeroy, WA
  • Average cloud cover in December: 45

The months with the most cloud cover are January and February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 11).

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Average visibility in December
Pomeroy, WA

Average visibility in December - Pomeroy, WA
  • Average visibility in December: 6mi

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

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Pomeroy, Washington, USA

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