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

The bright yellow eye and rays of the setting sun seen over the hilly and rocky scape in the Smith Rock State Park in Redmond, Oregon

Weather in December

Winter in Redmond officially sets in December, recording the lowest average temperature at 25.7°F (-3.5°C). The weather chart inks more rainfall and a significant return of snowfall. It is a stark departure from the preceding month’s conditions, with the chilly air being more palpable. Under almost half-covered clouds, the sun manages to provide solace for nearly 5.6 hours per day. Despite the mercury dipping low, the month maintains a vibrant holiday spirit.

Temperature

December, with its average high-temperature of 37°F (2.8°C) and an average low-temperature of 25.7°F (-3.5°C), holds the record as the coldest month.

Humidity

December is the most humid month, with an average relative humidity of 81%.

Rainfall

The month with the most rainfall is December, when the rain falls for 13.4 days and typically aggregates up to 1.73" (44mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Redmond, in December, snow falls for 12.1 days, with typically accumulated 5.63" (143mm) of snow. In Redmond, during the entire year, snow falls for 51.4 days and aggregates up to 24.53" (623mm) of snow.

Daylight

With an average of 8h and 54min of daylight, December has the shortest days of the year in Redmond.
On the first day of December, sunrise is at 7:21 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:35 pm PST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.6h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Boost your sun resistance with garments that are densely woven yet spacious. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.

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

Frequently asked questions

What time of the year is the coldest?

With average temperatures fluctuating between a high of 37°F (2.8°C) and a low of 25.7°F (-3.5°C), December stands out as the coldest month.

How cold is it in December?

The high-temperature during December is 37°F (2.8°C) and the low-temperature is 25.7°F (-3.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 80.6°F (27°C).

What is the most humid month?

The most humid month is December, with an average relative humidity of 81%.

What is the average humidity in December?

In Redmond, the average relative humidity in December is 81%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 13.4 days and typically aggregates up to 1.73" (44mm) of precipitation.

How many days does it rain in December?

In Redmond, during December, the rain falls for 13.4 days and regularly aggregates up to 1.73" (44mm) of precipitation.

How much does it snow in December?

In Redmond, in December, snow falls for 12.1 days, with typically accumulated 5.63" (143mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Redmond have in December?

The average day length in December is 8h and 55min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:21 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:35 pm PST.

What is the month with the least sunshine?

The months with the least sunshine in Redmond are January and December, with an average of 5.6h of sunshine.

How long on average sun shines in December?

The average sunshine duration in December is 5.6h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

45.9°F 7.7°C

37°F 2.8°C

40.1°F 4.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.2mph 11.6km/h

6.9mph 11.1km/h

7.3mph 11.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

14.2

12.3

13.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Redmond, OR

Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (37°F).

Average low temperature in December: 25.7°F

The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).

Average pressure in December
Redmond, OR

Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).

Average wind speed in December
Redmond, OR

Average wind speed in December: 6.3mph

The windiest months (with the highest average wind speed) are March and April (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).

Average humidity in December
Redmond, OR

Average humidity in December: 81%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (47%).

Average rainfall in December
Redmond, OR

Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is December (1.73").
The driest month (with the least rainfall) is July (0.24").

Average rainfall days in December
Redmond, OR

Average rainfall days in December: 13.4 days

The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is July (3.3 days).

Average snowfall in December
Redmond, OR

Average snowfall in December: 5.63"

The month with the highest snowfall is February (6.26").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Redmond, OR

Average snowfall days in December: 12.1 days

The month with the highest number of snowfall days is December (12.1 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Redmond, 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: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days in December
Redmond, OR

Average sunshine days in December: 12.3 days

The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (10.2 days).

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

Average cloud cover in December
Redmond, OR

Average cloud cover in December: 44

The month with the most cloud cover is December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).

Average visibility in December
Redmond, OR

Average visibility in December: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).

December weather forecast
Redmond, OR

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