December weather forecast
Imnaha, OR

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Weather in December

The first month of the winter, December, is still a freezing cold month in Imnaha, Oregon, with an average temperature fluctuating between 19.2°F (-7.1°C) and 30.4°F (-0.9°C).

Temperature

Imnaha witnesses the coldest weather in December, with temperatures averaging a high of 30.4°F (-0.9°C) and a low of 19.2°F (-7.1°C).

Humidity

The average relative humidity in December is 85%.

Rainfall

In December, in Imnaha, the rain falls for 9.9 days. Throughout December, 2.4" (61mm) of precipitation is accumulated. Throughout the year, there are 136 rainfall days, and 24.45" (621mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Imnaha, in December, snow falls for 17.5 days, with typically accumulated 13.9" (353mm) of snow. In Imnaha, Oregon, during the entire year, snow falls for 89.9 days and aggregates up to 68.82" (1748mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 48min of daylight.
On the first day of December, sunrise is at 7:08 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:13 pm PST.

Sunshine

In Imnaha, the average sunshine in December is 5.2h.

UV index

In Imnaha, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Updated: Jun 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

With average high temperatures of 30.4°F (-0.9°C) and lows of 19.2°F (-7.1°C), December is the coldest month.

How cold is it in December?

In Imnaha, in December, the average high-temperature is 30.4°F (-0.9°C), and the average low-temperature is 19.2°F (-7.1°C).

What is the average humidity in December?

The average relative humidity in December is 85%.

How many days does it rain in December?

In December, the rain falls for 9.9 days. Throughout December, 2.4" (61mm) of precipitation is accumulated.

How many days does it snow in December?

In Imnaha, in December, during 17.5 snowfall days, 13.9" (353mm) of snow is typically accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

In Imnaha, the average day length in December is 8h and 46min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:13 pm PST.

How long on average sun shines in December?

In Imnaha, the average sunshine duration in December is 5.2h.

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Imnaha, OR

Average temperature in December - Imnaha, OR
  • Average high temperature in December: 30.4°F

The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is December (30.4°F).

  • Average low temperature in December: 19.2°F

The month with the highest average low temperature is August (50.9°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).

Average pressure in December
Imnaha, OR

Average pressure in December - Imnaha, OR
  • Average pressure in December: 30.19"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).

Average wind speed in December
Imnaha, OR

Average wind speed in December - Imnaha, OR
  • Average wind speed in December: 6.2mph

The windiest month (with the highest average wind speed) is January (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in December
Imnaha, OR

Average humidity in December - Imnaha, OR
  • Average humidity in December: 85%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (46%).

Average rainfall in December
Imnaha, OR

Average rainfall in December - Imnaha, OR
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is July (0.83").

Average rainfall days in December
Imnaha, OR

Average rainfall days in December - Imnaha, OR
  • Average rainfall days in December: 9.9 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is August (5.8 days).

Average snowfall in December
Imnaha, OR

Average snowfall in December - Imnaha, OR
  • Average snowfall in December: 13.9"

The month with the highest snowfall is February (15.98").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Imnaha, OR

Average snowfall days in December - Imnaha, OR
  • Average snowfall days in December: 17.5 days

The month with the highest number of snowfall days is December (17.5 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in December / Average sunshine in December - Imnaha, 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 month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Imnaha, OR

Average sunshine days in December - Imnaha, OR
  • Average sunshine days in December: 11.5 days

The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (8 days).

Average UV index in December
Imnaha, OR

Average UV index in December - Imnaha, 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 and February (UV index 1).

Average cloud cover in December
Imnaha, OR

Average cloud cover in December - Imnaha, OR
  • Average cloud cover in December: 49

The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 11).

Average visibility in December
Imnaha, OR

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

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

Imnaha, Oregon, USA

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