December weather forecast
Brothers, OR

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Weather in December

The first month of the winter, December, is also an icy month in Brothers, Oregon, with an average temperature varying between 36.1°F (2.3°C) and 24.3°F (-4.3°C).

Temperature

December tends to be the coldest month, with temperatures averaging a daily high of 36.1°F (2.3°C) and a low of 24.3°F (-4.3°C).

Humidity

The most humid month is December, with an average relative humidity of 81%.

Rainfall

In Brothers, in December, it is raining for 5.6 days, with typically 0.63" (16mm) of accumulated precipitation. In Brothers, during the entire year, the rain falls for 65.5 days and collects up to 5.67" (144mm) of precipitation.

Snowfall

January through April, September through December are months with snowfall. In Brothers, in December, snow falls for 4.8 days, with typically accumulated 1.65" (42mm) of snow. In Brothers, Oregon, during the entire year, snow falls for 20.9 days and aggregates up to 9.02" (229mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 7:17 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:35 pm PST.

Sunshine

The month with the least sunshine in Brothers is December, with an average of 5.4h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What are the coldest months in Brothers?

The coldest time of the year in Brothers, Oregon, is December, with temperatures averaging a high of 36.1°F (2.3°C) and a low of 24.3°F (-4.3°C).

How cold is it in Brothers in December?

The high-temperature in Brothers, Oregon, during December is 36.1°F (2.3°C) and the low-temperature is 24.3°F (-4.3°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is appraised at 80.6°F (27°C).

What is the most humid month in Brothers?

December is the most humid month in Brothers, Oregon, with an average relative humidity of 81%.

What is the average humidity in December in Brothers?

In December, the average relative humidity in Brothers, Oregon, is 81%.

How many days does it rain in December in Brothers?

In December, in Brothers, Oregon, the rain falls for 5.6 days. Throughout December, 0.63" (16mm) of precipitation is accumulated.

How many days does it snow in December in Brothers?

In Brothers, in December, snow falls for 4.8 days, with typically accumulated 1.65" (42mm) of snow.

What is the month with the shortest days in Brothers?

December has the shortest days of the year in Brothers, Oregon, with an average of 9h and 0min of daylight.

How many hours of daylight does Brothers have in December?

In Brothers, the average day length in December is 8h and 59min.

What time are sunrise and sunset in December in Brothers?

On the first day of December in Brothers, Oregon, sunrise is at 7:17 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:35 pm PST.

What is the month with the least sunshine in Brothers?

The month with the least sunshine in Brothers is December, with an average of 5.4h of sunshine.

How long on average sun shines in December in Brothers?

In Brothers, the average sunshine duration in December is 5.4h.

When is the lowest UV index in Brothers?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December in Brothers?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Brothers, OR

Average temperature in December - Brothers, OR
  • Average high temperature in December: 36.1°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is December (36.1°F).

  • Average low temperature in December: 24.3°F

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (24.3°F).

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Average pressure in December
Brothers, OR

Average pressure in December - Brothers, OR
  • Average pressure in December: 30.16"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).

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Average wind speed in December
Brothers, OR

Average wind speed in December - Brothers, OR
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.7mph).

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Average humidity in December
Brothers, OR

Average humidity in December - Brothers, OR
  • Average humidity in December: 81%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (43%).

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Average rainfall in December
Brothers, OR

Average rainfall in December - Brothers, OR
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is May (0.67").
The driest month (with the least rainfall) is July (0.08").

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Average rainfall days in December
Brothers, OR

Average rainfall days in December - Brothers, OR
  • Average rainfall days in December: 5.6 days

The month with the highest number of rainy days is March (9 days).
The month with the least rainy days is July (2 days).

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Average snowfall in December
Brothers, OR

Average snowfall in December - Brothers, OR
  • Average snowfall in December: 1.65"

The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July and August (0").

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Average snowfall days in December
Brothers, OR

Average snowfall days in December - Brothers, OR
  • Average snowfall days in December: 4.8 days

The month with the highest number of snowfall days is December (4.8 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
Brothers, OR

Average daylight in December / Average sunshine in December - Brothers, OR
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

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Average sunshine days in December
Brothers, OR

Average sunshine days in December - Brothers, OR
  • Average sunshine days in December: 22.4 days

The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (19.5 days).

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Average UV index in December
Brothers, OR

Average UV index in December - Brothers, OR
  • 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, March, November and December (UV index 2).

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Average cloud cover in December
Brothers, OR

Average cloud cover in December - Brothers, OR
  • Average cloud cover in December: 45

The month with the most cloud cover is December (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in December
Brothers, OR

Average visibility in December - Brothers, OR
  • Average visibility in December: 5mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).

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Brothers, Oregon, USA

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