December weather forecast
Omak, WA

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Weather in December

The first month of the winter, December, is also a subzero cold month in Omak, Washington, with temperature in the range of an average low of 18.1°F (-7.7°C) and an average high of 30.4°F (-0.9°C).

Temperature

In Omak, December is the coldest month, with temperatures averaging a high of 30.4°F (-0.9°C) and a low of 18.1°F (-7.7°C).

Humidity

In Omak, the average relative humidity in December is 87%.

Rainfall

The month with the most rainfall in Omak is December, when the rain falls for 6.9 days and typically aggregates up to 0.94" (24mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Omak, Washington, in December, during 8.4 snowfall days, 3.27" (83mm) of snow is typically accumulated. In Omak, during the entire year, snow falls for 25.5 days and aggregates up to 10.12" (257mm) of snow.

Daylight

With an average of 8h and 24min of daylight, December has the shortest days of the year in Omak.
On the first day of December in Omak, sunrise is at 7:29 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:13 pm PST.

Sunshine

The average sunshine in December is 5h.

UV index

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. 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 is the coldest time of year in Omak?

Omak's December weather reaches an average high of 30.4°F (-0.9°C) and an average low of 18.1°F (-7.7°C), making it the coldest month.

How cold is it in Omak in December?

The average high-temperature, in December, in Omak, is 30.4°F (-0.9°C), while the average low-temperature is 18.1°F (-7.7°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is evaluated at 82.4°F (28°C).

What is the average humidity in December in Omak?

In December, the average relative humidity is 87%.

What is the wettest month in Omak?

The month with the most rainfall in Omak, Washington, is December, when the rain falls for 6.9 days and typically aggregates up to 0.94" (24mm) of precipitation.

How many days does it rain in December in Omak?

In Omak, Washington, in December, it is raining for 6.9 days, with typically 0.94" (24mm) of accumulated precipitation.

How many days does it snow in December in Omak?

In Omak, Washington, during December, snow falls for 8.4 days and regularly aggregates up to 3.27" (83mm) of snow.

What is the month with the shortest days in Omak?

The month with the shortest days is December, with an average of 8h and 24min of daylight.

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

In Omak, Washington, the average day length in December is 8h and 24min.

When is the sunrise / sunset in December in Omak?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:13 pm PST.

How long on average sun shines in December in Omak?

The average sunshine duration in December in Omak is 5h.

What is the UV index reading in December in Omak?

In December, the average daily maximum UV index in Omak, Washington, is 2. A UV Index of 2, and less, symbolizes a low health risk 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
Omak, WA

Average temperature in December - Omak, WA
  • Average high temperature in December: 30.4°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is December (30.4°F).

  • Average low temperature in December: 18.1°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).

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Average pressure in December
Omak, WA

Average pressure in December - Omak, WA
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).

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Average wind speed in December
Omak, WA

Average wind speed in December - Omak, WA
  • Average wind speed in December: 4.2mph

The windiest month (with the highest average wind speed) is April (5.1mph).
The calmest month (with the lowest average wind speed) is January (4mph).

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Average humidity in December
Omak, WA

Average humidity in December - Omak, WA
  • Average humidity in December: 87%

The month with the highest relative humidity is January (91%).
The months with the lowest relative humidity are July and August (42%).

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Average rainfall in December
Omak, WA

Average rainfall in December - Omak, WA
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is December (0.94").
The driest months (with the least rainfall) are July and August (0.2").

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Average rainfall days in December
Omak, WA

Average rainfall days in December - Omak, WA
  • Average rainfall days in December: 6.9 days

The month with the highest number of rainy days is March (11.5 days).
The month with the least rainy days is August (2.8 days).

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Average snowfall in December
Omak, WA

Average snowfall in December - Omak, WA
  • Average snowfall in December: 3.27"

The month with the highest snowfall is January (3.39").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Omak, WA

Average snowfall days in December - Omak, WA
  • Average snowfall days in December: 8.4 days

The month with the highest number of snowfall days is December (8.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Omak, WA
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 5h and 0min

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: 4h and 30min).

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Average sunshine days in December
Omak, WA

Average sunshine days in December - Omak, WA
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is November (15.4 days).

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Average UV index in December
Omak, WA

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in December
Omak, WA

Average cloud cover in December - Omak, 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 12).

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Average visibility in December
Omak, WA

Average visibility in December - Omak, WA
  • Average visibility in December: 4mi

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

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Omak, Washington, USA

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