December weather forecast
Curtin, OR

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Weather in December

The first month of the winter, December, is also a frosty month in Curtin, Oregon, with an average temperature fluctuating between 45.9°F (7.7°C) and 33.4°F (0.8°C).

Temperature

December stands out as Curtin's coldest month, with an average high-temperature of 45.9°F (7.7°C) and a low-temperature of 33.4°F (0.8°C).

Humidity

In Curtin, the average relative humidity in December is 86%.

Rainfall

December is the month with the most rainfall. Rain falls for 18.2 days and accumulates 4.61" (117mm) of precipitation.

Snowfall

Months with snowfall in Curtin are January through April, November and December. In Curtin, during December, snow falls for 0.8 days and regularly aggregates up to 0.39" (10mm) of snow. Throughout the year, there are 7.1 snowfall days, and 6.22" (158mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of December in Curtin, sunrise is at 7:27 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:45 pm PST.

Sunshine

February and December, with an average of 4.2h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index in Curtin are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 2 in December translates into these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the coldest month in Curtin?

In Curtin, December registers the lowest temperatures, averaging 45.9°F (7.7°C) at the peak and 33.4°F (0.8°C) at the lowest.

What is the average December temperature in Curtin?

The high-temperature, in December, in Curtin, is 45.9°F (7.7°C), while the low-temperature averages to 33.4°F (0.8°C).

What is the average humidity in December in Curtin?

The average relative humidity in December in Curtin is 86%.

What is the wettest month in Curtin?

The month with the most rainfall in Curtin, Oregon, is December, when the rain falls for 18.2 days and typically aggregates up to 4.61" (117mm) of precipitation.

How many days does it rain in December in Curtin?

In Curtin, Oregon, in December, it is raining for 18.2 days, with typically 4.61" (117mm) of accumulated precipitation.

How much does it snow in Curtin in December?

In Curtin, in December, snow falls for 0.8 days, with typically accumulated 0.39" (10mm) of snow.

What is the month with the shortest days in Curtin?

With an average of 9h and 0min of daylight, December has the shortest days of the year in Curtin.

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

The average day length in December in Curtin, Oregon, is 8h and 59min.

When are sunrise and sunset in December in Curtin?

In December, on the first day of the month, sunrise is at 7:27 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:45 pm PST.

What are the months with the least sunshine in Curtin?

February and December, with an average of 4.2h of sunshine, are months with the least sunshine in Curtin.

How long on average sun shines in December in Curtin?

In Curtin, Oregon, the average sunshine duration in December is 4.2h.

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

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

How high is the UV index in December in Curtin?

In December, the average daily maximum UV index in Curtin is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Curtin, OR

Average temperature in December - Curtin, OR
  • Average high temperature in December: 45.9°F

The warmest month (with the highest average high temperature) is August (80.1°F).
The month with the lowest average high temperature is December (45.9°F).

  • Average low temperature in December: 33.4°F

The month with the highest average low temperature is August (48.7°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).

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Average pressure in December
Curtin, OR

Average pressure in December - Curtin, OR
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in December
Curtin, OR

Average wind speed in December - Curtin, OR
  • Average wind speed in December: 4.3mph

The windiest month (with the highest average wind speed) is January (4.5mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).

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Average humidity in December
Curtin, OR

Average humidity in December - Curtin, OR
  • Average humidity in December: 86%

The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (70%).

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Average rainfall in December
Curtin, OR

Average rainfall in December - Curtin, OR
  • Average rainfall in December: 4.61"

The wettest month (with the highest rainfall) is December (4.61").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in December
Curtin, OR

Average rainfall days in December - Curtin, OR
  • Average rainfall days in December: 18.2 days

The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (3.6 days).

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Average snowfall in December
Curtin, OR

Average snowfall in December - Curtin, OR
  • Average snowfall in December: 0.39"

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Curtin, OR

Average snowfall days in December - Curtin, OR
  • Average snowfall days in December: 0.8 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Curtin, OR
  • Average daylight in December: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The months with the least sunshine are February and December (Average sunshine: 4h and 12min).

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Average sunshine days in December
Curtin, OR

Average sunshine days in December - Curtin, OR
  • Average sunshine days in December: 11.3 days

The month with the most sunshine days is July (25.8 days).
The months with the least sunshine days are February and March (9.3 days).

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Average UV index in December
Curtin, OR

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

The months with the highest UV index are June, July and August (UV index 5).
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
Curtin, OR

Average cloud cover in December - Curtin, OR
  • Average cloud cover in December: 57

The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in December
Curtin, OR

Average visibility in December - Curtin, OR
  • Average visibility in December: 4mi

The months with the highest visibility are July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (4mi).

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Curtin, Oregon, USA

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