December weather forecast
Pateros, WA

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Weather in December

The first month of the winter, December, is also a subzero cold month in Pateros, Washington, with an average temperature fluctuating between 30.7°F (-0.7°C) and 18.9°F (-7.3°C).

Temperature

Pateros's coldest months, January and December, record an average high-temperature of 30.7°F (-0.7°C).

Humidity

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

Rainfall

The month with the most rainfall is December, when the rain falls for 8.6 days and typically aggregates up to 1.34" (34mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 9.7 days and accumulates 4.72" (120mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 24min of daylight.
On the first day of December, sunrise is at 7:29 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:16 pm PST.

Sunshine

In Pateros, the average sunshine in December is 4.6h.

UV index

In Pateros, Washington, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 2 in December transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

Frequently asked questions

What is the coldest time of year?

Pateros's coldest period falls in January and December, when the average high-temperatures ascend to 30.7°F (-0.7°C).

How cold is it in December?

The average high-temperature, in December, in Pateros, is 30.7°F (-0.7°C), while the average low-temperature is 18.9°F (-7.3°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 82.4°F (28°C).

What is the average humidity in December?

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

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 8.6 days and typically aggregates up to 1.34" (34mm) of precipitation.

How much does it rain in December?

In Pateros, during December, the rain falls for 8.6 days and regularly aggregates up to 1.34" (34mm) of precipitation.

What is the snowiest month?

The month with the most snowfall is December, when snow falls for 9.7 days and typically aggregates up to 4.72" (120mm) of snow.

How much does it snow in December?

In Pateros, in December, snow falls for 9.7 days, with typically accumulated 4.72" (120mm) of snow.

What is the month with the shortest days?

With an average of 8h and 24min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 8h and 27min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:29 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 4:16 pm PST.

How many hours of sunshine does Pateros have in December?

In Pateros, the average sunshine duration in December is 4.6h.

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index reading 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
Pateros, WA

Average temperature in December - Pateros, WA
  • Average high temperature in December: 30.7°F

The warmest months (with the highest average high temperature) are July and August (83.1°F).
The months with the lowest average high temperature are January and December (30.7°F).

  • Average low temperature in December: 18.9°F

The month with the highest average low temperature is August (57°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).

Average pressure in December
Pateros, WA

Average pressure in December - Pateros, 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).

Average wind speed in December
Pateros, WA

Average wind speed in December - Pateros, WA
  • Average wind speed in December: 3.7mph

The windiest months (with the highest average wind speed) are April, June and July (5.3mph).
The calmest month (with the lowest average wind speed) is January (3.5mph).

Average humidity in December
Pateros, WA

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

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (40%).

Average rainfall in December
Pateros, WA

Average rainfall in December - Pateros, WA
  • Average rainfall in December: 1.34"

The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Pateros, WA

Average rainfall days in December - Pateros, WA
  • Average rainfall days in December: 8.6 days

The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is August (2.8 days).

Average snowfall in December
Pateros, WA

Average snowfall in December - Pateros, WA
  • Average snowfall in December: 4.72"

The month with the highest snowfall is December (4.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Pateros, WA

Average snowfall days in December - Pateros, WA
  • Average snowfall days in December: 9.7 days

The month with the highest number of snowfall days is December (9.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Pateros, 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: 4h and 4min

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 12min).

Average sunshine days in December
Pateros, WA

Average sunshine days in December - Pateros, WA
  • Average sunshine days in December: 14.9 days

The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (13.7 days).

Average UV index in December
Pateros, WA

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).

Average cloud cover in December
Pateros, WA

Average cloud cover in December - Pateros, WA
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in December
Pateros, WA

Average visibility in December - Pateros, 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).

Pateros, Washington, USA

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