December weather forecast
Monument, OR

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Weather in December

December, the first month of the winter in Monument, is also an icy month, with an average temperature varying between 33.4°F (0.8°C) and 19.6°F (-6.9°C).

Temperature

December is Monument's coldest month, registering average high temperatures of 33.4°F (0.8°C) and lows of 19.6°F (-6.9°C).

Humidity

In December, the average relative humidity in Monument is 84%.

Rainfall

In Monument, in December, it is raining for 11.1 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, in Monument, Oregon, there are 127.7 rainfall days, and 17.09" (434mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Monument, during December, snow falls for 14.5 days and regularly aggregates up to 8.31" (211mm) of snow. In Monument, during the entire year, snow falls for 62.5 days and aggregates up to 39.17" (995mm) of snow.

Daylight

With an average of 8h and 54min of daylight, December has the shortest days of the year in Monument.
On the first day of December, sunrise is at 7:15 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:26 pm PST.

Sunshine

In Monument, Oregon, the average sunshine in December is 5.3h.

UV index

The months with the lowest UV index in Monument are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the coldest month in Monument?

The lowest temperatures in Monument, Oregon, are recorded in December, with averages reaching a high of 33.4°F (0.8°C) and a low of 19.6°F (-6.9°C).

How cold is it in Monument in December?

Monument in December has an average high-temperature of 33.4°F (0.8°C) and an average low-temperature of 19.6°F (-6.9°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is appraised at 80.6°F (27°C).

What is the average humidity in December in Monument?

The average relative humidity in December in Monument is 84%.

How many days does it rain in December in Monument?

In Monument, in December, it is raining for 11.1 days, with typically 2.24" (57mm) of accumulated precipitation.

How many days does it snow in December in Monument?

In December, it is snowing for 14.5 days. Throughout December, 8.31" (211mm) of snow is accumulated.

What is the month with the shortest days in Monument?

The month with the shortest days in Monument is December, with an average of 8h and 54min of daylight.

How many hours of daylight does Monument have in December?

In Monument, the average day length in December is 8h and 52min.

What time are sunrise and sunset in December in Monument?

On the first day of December in Monument, Oregon, sunrise is at 7:15 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:26 pm PST.

How long on average sun shines in December in Monument?

In Monument, the average sunshine duration in December is 5.3h.

When is the lowest UV index in Monument?

The months with the lowest UV index in Monument are January through March, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December in Monument?

In December, the average daily maximum UV index in Monument is 2. A UV Index reading of 2, and below, represents a low health threat 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
Monument, OR

Average temperature in December - Monument, OR
  • Average high temperature in December: 33.4°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°F).

  • Average low temperature in December: 19.6°F

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).

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Average pressure in December
Monument, OR

Average pressure in December - Monument, OR
  • Average pressure in December: 30.19"Hg

The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

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Average wind speed in December
Monument, OR

Average wind speed in December - Monument, OR
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).

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Average humidity in December
Monument, OR

Average humidity in December - Monument, OR
  • Average humidity in December: 84%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).

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Average rainfall in December
Monument, OR

Average rainfall in December - Monument, OR
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in December
Monument, OR

Average rainfall days in December - Monument, OR
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).

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Average snowfall in December
Monument, OR

Average snowfall in December - Monument, OR
  • Average snowfall in December: 8.31"

The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Monument, OR

Average snowfall days in December - Monument, OR
  • Average snowfall days in December: 14.5 days

The month with the highest number of snowfall days is December (14.5 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
Monument, OR

Average daylight in December / Average sunshine in December - Monument, OR
  • Average daylight in December: 8h and 5min

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

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

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Average sunshine days in December
Monument, OR

Average sunshine days in December - Monument, OR
  • Average sunshine days in December: 11.4 days

The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).

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Average UV index in December
Monument, OR

Average UV index in December - Monument, 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, October, November and December (UV index 2).

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Average cloud cover in December
Monument, OR

Average cloud cover in December - Monument, OR
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in December
Monument, OR

Average visibility in December - Monument, OR
  • 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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Monument, Oregon, USA

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