December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

Bright neon lights light up the colorful city of Eugene in Oregon,

Weather in December

December in Eugene marks the full-fledged start of winter, presenting the city with the lowest temperatures and the longest nights of the year. The weather pattern mirrors that of January with an increase in rainfall to 1.54" (39mm), the highest yearly, and a return of snowfall. Although December boasts only 4.2 hours of sunshine, the landscape gets veiled in a cinematic snowy spectacle. This month concludes the year with a festive, chilly province that gradually transitions into January, thus restarting the annual weather cycle.

Temperature

Eugene, Oregon, reaches its lowest average temperatures in December, measuring 46.2°F (7.9°C) at the peak and 33.8°F (1°C) at the lowest.

Humidity

The months with the highest humidity are January through March and December, with an average relative humidity of 86%.

Rainfall

December is the month with the most rainfall. Rain falls for 13.4 days and accumulates 1.54" (39mm) of precipitation.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 0.2" (5mm) of snow. In Eugene, during the entire year, snow falls for 5 days and aggregates up to 2.36" (60mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 7:28 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:44 pm PST.

Sunshine

The average sunshine in December is 4.2h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 2 in December transforms into this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

December, with its average high-temperature of 46.2°F (7.9°C) and an average low-temperature of 33.8°F (1°C), holds the record as the coldest month.

What are December temperatures?

In Eugene, in December, the average high-temperature is 46.2°F (7.9°C), and the average low-temperature is 33.8°F (1°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 84.2°F (29°C).

What are the most humid months in Eugene?

January through March and December, with an average relative humidity of 86%, are most humid months.

What is the average humidity in December?

In December, the average relative humidity is 86%.

What is the wettest month?

December is the month with the most rainfall. Rain falls for 13.4 days and accumulates 1.54" (39mm) of precipitation.

How many days does it rain in December?

In Eugene, during December, the rain falls for 13.4 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 0.2" (5mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Eugene have in December?

In Eugene, the average day length in December is 8h and 57min.

When is the sunrise / sunset in December in Eugene?

On the first day of December, sunrise is at 7:28 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:44 pm PST.

How many hours of sunshine does Eugene have in December?

The average sunshine duration in December is 4.2h.

What is the month with the lowest UV index?

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 December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

52.7°F 11.5°C

46.2°F 7.9°C

49.3°F 9.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.7mph 7.6km/h

4.8mph 7.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

17.5

15.5

17.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Eugene, OR

Average high temperature in December: 46.2°F

The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (46.2°F).

Average low temperature in December: 33.8°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 (33.8°F).

Average pressure in December
Eugene, OR

Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in December
Eugene, OR

Average wind speed in December: 4.4mph

The windiest months (with the highest average wind speed) are January and March (4.5mph).
The calmest months (with the lowest average wind speed) are August and September (3.6mph).

Average humidity in December
Eugene, OR

Average humidity in December: 86%

The months with the highest relative humidity are January, February, March and December (86%).
The month with the lowest relative humidity is August (68%).

Average rainfall in December
Eugene, OR

Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.08").

Average rainfall days in December
Eugene, OR

Average rainfall days in December: 13.4 days

The month with the highest number of rainy days is December (13.4 days).
The month with the least rainy days is August (2.5 days).

Average snowfall in December
Eugene, OR

Average snowfall in December: 0.2"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Eugene, OR

Average snowfall days in December: 0.6 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Eugene, 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 0min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

Average sunshine days in December
Eugene, OR

Average sunshine days in December: 15.5 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is February (14.3 days).

Average UV index in December
Eugene, 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, November and December (UV index 2).

Average cloud cover in December
Eugene, OR

Average cloud cover in December: 58

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

Average visibility in December
Eugene, OR

Average visibility in December: 4mi

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

December weather forecast
Eugene, OR

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