December weather forecast
Mill City, OR

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Weather in December

December, the first month of the winter in Mill City, is still a cold month, with an average temperature ranging between max 42.6°F (5.9°C) and min 31.1°F (-0.5°C).

Temperature

December stands out as Mill City's coldest month, with an average high-temperature of 42.6°F (5.9°C) and a low-temperature of 31.1°F (-0.5°C).

Humidity

In December, the average relative humidity in Mill City is 85%.

Rainfall

December is the month with the most rainfall. Rain falls for 18.9 days and accumulates 6.65" (169mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Mill City, in December, during 2.1 snowfall days, 1.1" (28mm) of snow is typically accumulated. Throughout the year, in Mill City, there are 14.4 snowfall days, and 15.59" (396mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 8h and 54min of daylight.
On the first day of December in Mill City, sunrise is at 7:27 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:39 pm PST.

Sunshine

In December, the average sunshine is 3.8h.

UV index

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 2 in December translates into this advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What time of the year is the coldest in Mill City?

Mill City, Oregon, reaches its average lowest temperatures in December, measuring 42.6°F (5.9°C) at the peak and 31.1°F (-0.5°C) at the lowest.

Is it cold in Mill City during December?

During December, Mill City experiences an average high-temperature of 42.6°F (5.9°C) and a low-temperature of 31.1°F (-0.5°C).

What is the average humidity in December in Mill City?

The average relative humidity in December in Mill City is 85%.

What is the wettest month in Mill City?

December is the month with the most rainfall. Rain falls for 18.9 days and accumulates 6.65" (169mm) of precipitation.

How many days does it rain in December in Mill City?

In December, the rain falls for 18.9 days. Throughout December, 6.65" (169mm) of precipitation is accumulated.

How many days does it snow in December in Mill City?

In Mill City, during December, snow falls for 2.1 days and regularly aggregates up to 1.1" (28mm) of snow.

What is the month with the shortest days in Mill City?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Mill City, Oregon.

What is the average length of the day in December in Mill City?

The average day length in December is 8h and 52min.

When are sunrise and sunset in December in Mill City?

On the first day of December in Mill City, sunrise is at 7:27 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:39 pm PST.

How many hours of sunshine does Mill City have in December?

In December, the average sunshine duration is 3.8h.

What is the UV index intensity in December in Mill City?

In Mill City, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes 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
Mill City, OR

Average temperature in December - Mill City, OR
  • Average high temperature in December: 42.6°F

The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is August (48.4°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).

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Average pressure in December
Mill City, OR

Average pressure in December - Mill City, OR
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in December
Mill City, OR

Average wind speed in December - Mill City, OR
  • Average wind speed in December: 5.9mph

The windiest month (with the highest average wind speed) is January (6.2mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity in December
Mill City, OR

Average humidity in December - Mill City, OR
  • Average humidity in December: 85%

The month with the highest relative humidity is March (87%).
The month with the lowest relative humidity is August (67%).

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Average rainfall in December
Mill City, OR

Average rainfall in December - Mill City, OR
  • Average rainfall in December: 6.65"

The wettest month (with the highest rainfall) is December (6.65").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days in December
Mill City, OR

Average rainfall days in December - Mill City, OR
  • Average rainfall days in December: 18.9 days

The month with the highest number of rainy days is March (21.2 days).
The month with the least rainy days is July (5.4 days).

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Average snowfall in December
Mill City, OR

Average snowfall in December - Mill City, OR
  • Average snowfall in December: 1.1"

The month with the highest snowfall is February (6.5").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Mill City, OR

Average snowfall days in December - Mill City, OR
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is February (5.3 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
Mill City, OR

Average daylight in December / Average sunshine in December - Mill City, 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: 3h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).

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Average sunshine days in December
Mill City, OR

Average sunshine days in December - Mill City, OR
  • Average sunshine days in December: 10.6 days

The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is March (7.7 days).

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Average UV index in December
Mill City, OR

Average UV index in December - Mill City, OR
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in December
Mill City, OR

Average cloud cover in December - Mill City, OR
  • Average cloud cover in December: 59

The months with the most cloud cover are February and March (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in December
Mill City, OR

Average visibility in December - Mill City, OR
  • Average visibility in December: 5mi

The month with the highest visibility is August (6mi).
The months with the lowest visibility are February and April (4mi).

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Mill City, Oregon, USA

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