December weather forecast
Moro, OR

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Weather in December

December, the first month of the winter in Moro, is still a cold month, with an average temperature ranging between min 27°F (-2.8°C) and max 37.4°F (3°C).

Temperature

December is Moro's coldest month, registering average high temperatures of 37.4°F (3°C) and lows of 27°F (-2.8°C).

Humidity

In December, the average relative humidity in Moro is 83%.

Rainfall

In Moro, in December, it is raining for 12.6 days, with typically 1.73" (44mm) of accumulated precipitation. In Moro, during the entire year, the rain falls for 112.2 days and collects up to 10.91" (277mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Moro, in December, during 3.9 snowfall days, 2.09" (53mm) of snow is typically accumulated. In Moro, during the entire year, snow falls for 12.6 days and aggregates up to 7.6" (193mm) of snow.

Daylight

December has the shortest days of the year in Moro, with an average of 8h and 48min of daylight.
On the first day of the month, sunrise is at 7:23 am and sunset at 4:21 pm. On the last day of December, in Moro, sunrise is at 7:42 am and sunset at 4:29 pm PST.

Sunshine

In Moro, Oregon, the average sunshine in December is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Moro. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the coldest month in Moro?

The coldest period in Moro is December, when temperatures fluctuate between an average high of 37.4°F (3°C) and a low of 27°F (-2.8°C).

How cold is December in Moro?

The high-temperature, in December, in Moro, is 37.4°F (3°C), while the low-temperature averages to 27°F (-2.8°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 84.2°F (29°C).

What is the average humidity in December in Moro?

In December, the average relative humidity in Moro is 83%.

How much does it rain in Moro in December?

In Moro, Oregon, in December, it is raining for 12.6 days, with typically 1.73" (44mm) of accumulated precipitation.

How much does it snow in Moro in December?

In Moro, Oregon, during December, snow falls for 3.9 days and regularly aggregates up to 2.09" (53mm) of snow.

What is the month with the shortest days in Moro?

December has the shortest days of the year, with an average of 8h and 48min of daylight.

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

In December, the average day length in Moro is 8h and 47min.

When is the sunrise / sunset in December in Moro?

In December, on the first day of the month, sunrise is at 7:23 am and sunset at 4:21 pm. On the last day of the month, in Moro, sunrise is at 7:42 am and sunset at 4:29 pm PST.

How many hours of sunshine does Moro have in December?

The average sunshine duration in December in Moro, Oregon, is 5.1h.

What are the months with the lowest UV index in Moro?

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

What is the UV index intensity in December in Moro?

In December, the average daily maximum UV index in Moro, Oregon, is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to 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
Moro, OR

Average temperature in December - Moro, OR
  • Average high temperature in December: 37.4°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (37.4°F).

  • Average low temperature in December: 27°F

The month with the highest average low temperature is August (57.9°F).
The coldest month (with the lowest average low temperature) is December (27°F).

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Average pressure in December
Moro, OR

Average pressure in December - Moro, OR
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).

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Average wind speed in December
Moro, OR

Average wind speed in December - Moro, OR
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5mph).

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Average humidity in December
Moro, OR

Average humidity in December - Moro, OR
  • Average humidity in December: 83%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (46%).

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Average rainfall in December
Moro, OR

Average rainfall in December - Moro, OR
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is January (1.93").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in December
Moro, OR

Average rainfall days in December - Moro, OR
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is July (2.9 days).

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Average snowfall in December
Moro, OR

Average snowfall in December - Moro, OR
  • Average snowfall in December: 2.09"

The month with the highest snowfall is February (2.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Moro, OR

Average snowfall days in December - Moro, OR
  • Average snowfall days in December: 3.9 days

The months with the highest number of snowfall days are February and December (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 5h and 1min

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: 5h and 0min).

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Average sunshine days in December
Moro, OR

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

The month with the most sunshine days is July (27 days).
The month with the least sunshine days is February (12.3 days).

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Average UV index in December
Moro, OR

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

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Average cloud cover in December
Moro, OR

Average cloud cover in December - Moro, OR
  • Average cloud cover in December: 46

The month with the most cloud cover is January (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
Moro, OR

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

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

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Moro, Oregon, USA

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