December weather forecast
Lonerock, OR

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Weather in December

The first month of the winter, December, is still a cold month in Lonerock, Oregon, with temperature in the range of an average low of 27.1°F (-2.7°C) and an average high of 37.9°F (3.3°C).

Temperature

The lowest temperatures are recorded in December, with averages reaching a high of 37.9°F (3.3°C) and a low of 27.1°F (-2.7°C).

Humidity

In December, the average relative humidity is 78%.

Rainfall

In December, the rain falls for 12.8 days. Throughout December, 1.65" (42mm) of precipitation is accumulated. Throughout the year, in Lonerock, Oregon, there are 131.9 rainfall days, and 13.54" (344mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Lonerock, in December, during 9.2 snowfall days, 3.66" (93mm) of snow is typically accumulated. Throughout the year, in Lonerock, Oregon, there are 31.3 snowfall days, and 18.54" (471mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Lonerock, with an average of 8h and 48min of daylight.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:19 pm. On the last day of December, in Lonerock, sunrise is at 7:37 am and sunset at 4:27 pm PST.

Sunshine

In Lonerock, the average sunshine in December is 5.4h.

UV index

The months with the lowest UV index in Lonerock are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What is the coldest time of year in Lonerock?

Lonerock's December weather, marked by an average high temperature of 37.9°F (3.3°C) and an average low temperature of 27.1°F (-2.7°C), is the coldest in the year.

Is December cold in Lonerock?

December temperatures vary between a high-temperature of 37.9°F (3.3°C) and a low-temperature of 27.1°F (-2.7°C).

What is the average humidity in December in Lonerock?

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

How much does it rain in Lonerock in December?

In Lonerock, in December, during 12.8 rainfall days, 1.65" (42mm) of precipitation is typically accumulated.

How many days does it snow in December in Lonerock?

In December, in Lonerock, Oregon, it is snowing for 9.2 days. Throughout December, 3.66" (93mm) of snow is accumulated.

What is the month with the shortest days in Lonerock?

The month with the shortest days in Lonerock is December, with an average of 8h and 48min of daylight.

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

The average day length in December is 8h and 50min.

When is the sunrise / sunset in December in Lonerock?

In December, on the first day of the month, sunrise is at 7:18 am and sunset at 4:19 pm. On the last day of the month, in Lonerock, Oregon, sunrise is at 7:37 am and sunset at 4:27 pm PST.

How many hours of sunshine does Lonerock have in December?

The average sunshine duration in December is 5.4h.

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

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

What is the UV index reading in December in Lonerock?

In December, the average daily maximum UV index in Lonerock is 2. A UV Index reading of 2, and below, represents a minimal hazard to health 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
Lonerock, OR

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

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (37.9°F).

  • Average low temperature in December: 27.1°F

The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).

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Average pressure in December
Lonerock, OR

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

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

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Average wind speed in December
Lonerock, OR

Average wind speed in December - Lonerock, OR
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is September (7.2mph).

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Average humidity in December
Lonerock, OR

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

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (39%).

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Average rainfall in December
Lonerock, OR

Average rainfall in December - Lonerock, OR
  • Average rainfall in December: 1.65"

The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in December
Lonerock, OR

Average rainfall days in December - Lonerock, OR
  • Average rainfall days in December: 12.8 days

The month with the highest number of rainy days is March (17 days).
The month with the least rainy days is August (4.1 days).

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Average snowfall in December
Lonerock, OR

Average snowfall in December - Lonerock, OR
  • Average snowfall in December: 3.66"

The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Lonerock, OR

Average snowfall days in December - Lonerock, OR
  • Average snowfall days in December: 9.2 days

The month with the highest number of snowfall days is December (9.2 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
Lonerock, OR

Average daylight in December / Average sunshine in December - Lonerock, 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 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 February (Average sunshine: 5h and 18min).

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Average sunshine days in December
Lonerock, OR

Average sunshine days in December - Lonerock, OR
  • Average sunshine days in December: 12.8 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (9.5 days).

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Average UV index in December
Lonerock, OR

Average UV index in December - Lonerock, 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
Lonerock, OR

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

The months with the most cloud cover are January and February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in December
Lonerock, OR

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

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