December weather forecast
Adams, OR

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Weather in December

The first month of the winter, December, is also a wintry month in Adams, Oregon, with an average temperature varying between 37.9°F (3.3°C) and 27.3°F (-2.6°C).

Temperature

Adams notes the coldest temperatures in December, with a high average of 37.9°F (3.3°C) and a low of 27.3°F (-2.6°C).

Humidity

In December, the average relative humidity in Adams is 78%.

Rainfall

In Adams, during December, the rain falls for 13.5 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Adams, during the entire year, the rain falls for 132.7 days and collects up to 12.91" (328mm) of precipitation.

Snowfall

January through April, September, November and December are months with snowfall. In Adams, in December, during 5.5 snowfall days, 2.05" (52mm) of snow is typically accumulated. Throughout the year, there are 17.5 snowfall days, and 9.41" (239mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Adams, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:15 am and sunset at 4:11 pm. On the last day of December, in Adams, sunrise is at 7:35 am and sunset at 4:20 pm PST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.4h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Adams. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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Frequently asked questions

What month is the coldest in Adams?

December stands out as Adams's coldest month, with temperatures ranging between an average high of 37.9°F (3.3°C) and a low of 27.3°F (-2.6°C).

How cold does it get in Adams in December?

The average high-temperature, in December, in Adams, is 37.9°F (3.3°C), while the average low-temperature is 27.3°F (-2.6°C).

What is the average humidity in December in Adams?

In Adams, the average relative humidity in December is 78%.

How much does it rain in Adams in December?

In Adams, in December, it is raining for 13.5 days, with typically 1.57" (40mm) of accumulated precipitation.

How much does it snow in Adams in December?

In Adams, Oregon, in December, snow falls for 5.5 days, with typically accumulated 2.05" (52mm) of snow.

What is the month with the shortest days in Adams?

With an average of 8h and 42min of daylight, December has the shortest days of the year.

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

In December, the average day length in Adams, Oregon, is 8h and 44min.

What time are sunrise and sunset in December in Adams?

In December, on the first day of the month, sunrise is at 7:15 am and sunset at 4:11 pm. On the last day of the month, in Adams, Oregon, sunrise is at 7:35 am and sunset at 4:20 pm PST.

What is the month with the least sunshine in Adams?

January and December, with an average of 5.4h of sunshine, are months with the least sunshine in Adams, Oregon.

How many hours of sunshine does Adams have in December?

The average sunshine duration in December in Adams, Oregon, is 5.4h.

What is the month with the lowest UV index in Adams?

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

What is the UV index intensity in December in Adams?

In Adams, Oregon, the average daily maximum UV index in December 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
Adams, OR

Average temperature in December - Adams, OR
  • Average high temperature in December: 37.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (37.9°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is December (27.3°F).

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Average pressure in December
Adams, OR

Average pressure in December - Adams, OR
  • Average pressure in December: 30.17"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in December
Adams, OR

Average wind speed in December - Adams, OR
  • Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

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Average humidity in December
Adams, OR

Average humidity in December - Adams, OR
  • Average humidity in December: 78%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in December
Adams, OR

Average rainfall in December - Adams, OR
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is March (1.65").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in December
Adams, OR

Average rainfall days in December - Adams, OR
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (3.6 days).

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Average snowfall in December
Adams, OR

Average snowfall in December - Adams, OR
  • Average snowfall in December: 2.05"

The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and October (0").

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Average snowfall days in December
Adams, OR

Average snowfall days in December - Adams, OR
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

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Average daylight in December /
Average sunshine in December
Adams, OR

Average daylight in December / Average sunshine in December - Adams, OR
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 5h and 2min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

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Average sunshine days in December
Adams, OR

Average sunshine days in December - Adams, OR
  • Average sunshine days in December: 13.8 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (11.7 days).

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Average UV index in December
Adams, OR

Average UV index in December - Adams, OR
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
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
Adams, OR

Average cloud cover in December - Adams, OR
  • Average cloud cover in December: 43

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in December
Adams, OR

Average visibility in December - Adams, OR
  • Average visibility in December: 6mi

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

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Adams, Oregon, USA

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