December weather forecast
Orondo, WA

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Weather in December

The first month of the winter, December, is also a wintry month in Orondo, Washington, with an average temperature fluctuating between 32.4°F (0.2°C) and 20.7°F (-6.3°C).

Temperature

The coldest time of the year is December, with temperatures averaging a high of 32.4°F (0.2°C) and a low of 20.7°F (-6.3°C).

Humidity

The average relative humidity in December is 88%.

Rainfall

In Orondo, during December, the rain falls for 10 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Orondo, during the entire year, the rain falls for 111.1 days and collects up to 11.3" (287mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. The month with the most snowfall in Orondo is December, when snow falls for 6.9 days and typically aggregates up to 4.76" (121mm) of snow.

Daylight

With an average of 8h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:29 am and sunset at 4:11 pm. On the last day of December, sunrise is at 7:49 am and sunset at 4:19 pm PST.

Sunshine

The average sunshine in December is 4.9h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Orondo. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Enhance your sun protection with tightly woven, yet airy clothing. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What are the coldest months in Orondo?

The month of December sees the average lowest temperatures in Orondo, Washington, reaching 32.4°F (0.2°C) at the peak and 20.7°F (-6.3°C) at the low.

How cold is it in Orondo in December?

In December, in Orondo, the average high-temperature is 32.4°F (0.2°C), and the average low-temperature is 20.7°F (-6.3°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in August is estimated at 82.4°F (28°C).

What is the average humidity in December in Orondo?

In Orondo, Washington, the average relative humidity in December is 88%.

How much does it rain in Orondo in December?

In Orondo, Washington, during December, the rain falls for 10 days and regularly aggregates up to 1.61" (41mm) of precipitation.

What is the snowiest month in Orondo?

The month with the most snowfall is December, when snow falls for 6.9 days and typically aggregates up to 4.76" (121mm) of snow.

How many days does it snow in December in Orondo?

In Orondo, Washington, during December, snow falls for 6.9 days and regularly aggregates up to 4.76" (121mm) of snow.

What is the month with the shortest days in Orondo?

With an average of 8h and 30min of daylight, December has the shortest days of the year in Orondo.

How many hours of daylight does Orondo have in December?

The average day length in December in Orondo is 8h and 30min.

What time are sunrise and sunset in December in Orondo?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:19 pm PST.

How many hours of sunshine does Orondo have in December?

In December, the average sunshine duration is 4.9h.

When is the lowest UV index in Orondo?

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

How high is the UV index in December in Orondo?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's 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
Orondo, WA

Average temperature in December - Orondo, WA
  • Average high temperature in December: 32.4°F

The warmest months (with the highest average high temperature) are July and August (82.6°F).
The month with the lowest average high temperature is December (32.4°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

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Average pressure in December
Orondo, WA

Average pressure in December - Orondo, WA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

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Average wind speed in December
Orondo, WA

Average wind speed in December - Orondo, WA
  • Average wind speed in December: 3.4mph

The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).

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Average humidity in December
Orondo, WA

Average humidity in December - Orondo, WA
  • Average humidity in December: 88%

The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are July and August (47%).

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Average rainfall in December
Orondo, WA

Average rainfall in December - Orondo, WA
  • Average rainfall in December: 1.61"

The wettest month (with the highest rainfall) is January (1.77").
The driest months (with the least rainfall) are July and August (0.24").

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Average rainfall days in December
Orondo, WA

Average rainfall days in December - Orondo, WA
  • Average rainfall days in December: 10 days

The month with the highest number of rainy days is March (14 days).
The month with the least rainy days is August (3.4 days).

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Average snowfall in December
Orondo, WA

Average snowfall in December - Orondo, WA
  • Average snowfall in December: 4.76"

The month with the highest snowfall is December (4.76").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Orondo, WA

Average snowfall days in December - Orondo, WA
  • Average snowfall days in December: 6.9 days

The month with the highest number of snowfall days is December (6.9 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
Orondo, WA

Average daylight in December / Average sunshine in December - Orondo, WA
  • Average daylight in December: 8h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in December
Orondo, WA

Average sunshine days in December - Orondo, WA
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (13.3 days).

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Average UV index in December
Orondo, WA

Average UV index in December - Orondo, 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
Orondo, WA

Average cloud cover in December - Orondo, WA
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 11).

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Average visibility in December
Orondo, WA

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

The months with the highest visibility are March, 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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Orondo, Washington, USA

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