December weather forecast
Wishram, WA

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Weather in December

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

Temperature

December is the month that records the lowest temperatures, with averages ranging from a high of 37.4°F (3°C) to a low of 27°F (-2.8°C).

Humidity

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

Rainfall

In Wishram, Washington, in December, during 12.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Wishram, 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 Wishram, in December, snow falls for 3.9 days, with typically accumulated 2.09" (53mm) of snow. Throughout the year, there are 12.6 snowfall days, and 7.6" (193mm) of snow is accumulated.

Daylight

The month with the shortest days in Wishram is December, with an average of 8h and 48min of daylight.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:44 am and sunset at 4:30 pm PST.

Sunshine

In December, the average sunshine 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 reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Frequently asked questions

What time of the year is the coldest in Wishram?

In Wishram, 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).

How cold is December in Wishram?

In Wishram, 37.4°F (3°C) is the average high-temperature and 27°F (-2.8°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is computed to be 84.2°F (29°C).

What is the average humidity in December in Wishram?

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

How much does it rain in Wishram in December?

In Wishram, in December, during 12.6 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

How much does it snow in Wishram in December?

In Wishram, Washington, during December, snow falls for 3.9 days and regularly aggregates up to 2.09" (53mm) of snow.

What is the month with the shortest days in Wishram?

With an average of 8h and 48min of daylight, December has the shortest days of the year.

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

The average day length in December is 8h and 46min.

When are sunrise and sunset in December in Wishram?

In December, on the first day of the month, sunrise is at 7:24 am and sunset at 4:21 pm. On the last day of the month, in Wishram, sunrise is at 7:44 am and sunset at 4:30 pm PST.

How long on average sun shines in December in Wishram?

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

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

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

What is the UV index reading in December in Wishram?

In December, the average daily maximum UV index in Wishram 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
Wishram, WA

Average temperature in December - Wishram, 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
Wishram, WA

Average pressure in December - Wishram, 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
Wishram, WA

Average wind speed in December - Wishram, 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
Wishram, WA

Average humidity in December - Wishram, 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
Wishram, WA

Average rainfall in December - Wishram, 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
Wishram, WA

Average rainfall days in December - Wishram, 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
Wishram, WA

Average snowfall in December - Wishram, 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
Wishram, WA

Average snowfall days in December - Wishram, 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
Wishram, WA

Average daylight in December / Average sunshine in December - Wishram, 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
Wishram, WA

Average sunshine days in December - Wishram, 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
Wishram, WA

Average UV index in December - Wishram, 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
Wishram, WA

Average cloud cover in December - Wishram, 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
Wishram, WA

Average visibility in December - Wishram, 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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Wishram, Washington, USA

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