December weather forecast
Dayville, OR

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Weather in December

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

Temperature

In Dayville, Oregon, the lowest average temperatures are observed in December, with a high of 33.4°F (0.8°C) and a low of 19.6°F (-6.9°C).

Humidity

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

Rainfall

In Dayville, during December, the rain falls for 11.1 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Dayville, during the entire year, the rain falls for 127.7 days and collects up to 17.09" (434mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Dayville. In Dayville, Oregon, in December, snow falls for 14.5 days, with typically accumulated 8.31" (211mm) of snow. Throughout the year, in Dayville, there are 62.5 snowfall days, and 39.17" (995mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:15 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:34 am and sunset at 4:28 pm PST.

Sunshine

In Dayville, the average sunshine in December is 5.3h.

UV index

The months with the lowest UV index 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 threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum UV index of 2 in December translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Boost your sun resistance with garments that are densely woven yet spacious. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What time of the year is the coldest in Dayville?

In Dayville, December is known for its average lowest temperatures, reaching a high of 33.4°F (0.8°C) and a low of 19.6°F (-6.9°C).

How cold is December in Dayville?

During December, Dayville experiences an average high-temperature of 33.4°F (0.8°C) and a low-temperature of 19.6°F (-6.9°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 80.6°F (27°C).

What is the average humidity in December in Dayville?

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

How many days does it rain in December in Dayville?

In December, in Dayville, the rain falls for 11.1 days. Throughout December, 2.24" (57mm) of precipitation is accumulated.

How much does it snow in Dayville in December?

In Dayville, Oregon, during December, snow falls for 14.5 days and regularly aggregates up to 8.31" (211mm) of snow.

What is the month with the shortest days in Dayville?

December has the shortest days of the year in Dayville, with an average of 8h and 54min of daylight.

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

In Dayville, Oregon, the average day length in December is 8h and 54min.

When are sunrise and sunset in December in Dayville?

On the first day of December in Dayville, sunrise is at 7:15 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:28 pm PST.

How many hours of sunshine does Dayville have in December?

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

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

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

How high is the UV index in December in Dayville?

In Dayville, Oregon, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Dayville, OR

Average temperature in December - Dayville, 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
Dayville, OR

Average pressure in December - Dayville, 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
Dayville, OR

Average wind speed in December - Dayville, 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
Dayville, OR

Average humidity in December - Dayville, 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
Dayville, OR

Average rainfall in December - Dayville, 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
Dayville, OR

Average rainfall days in December - Dayville, 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
Dayville, OR

Average snowfall in December - Dayville, 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
Dayville, OR

Average snowfall days in December - Dayville, 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
Dayville, OR

Average daylight in December / Average sunshine in December - Dayville, 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
Dayville, OR

Average sunshine days in December - Dayville, 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
Dayville, OR

Average UV index in December - Dayville, 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
Dayville, OR

Average cloud cover in December - Dayville, 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
Dayville, OR

Average visibility in December - Dayville, 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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Dayville, Oregon, USA

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