December weather forecast
Sherwood, OR

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Weather in December

December rounds off the year in Sherwood with the onset of winter temperatures and the return of occasional snowfall. The city experiences its second highest rainfall of 4.57" (116mm) spread across 18.9 days, contributing to the city's typical wet winters. The plummeting temperatures reach down to 34.5°F (1.4°C) during the nights, making heavy winter gear essential. As the daylight hours reach their shortest, the promise of a white Christmas and the squashy thump of snowflakes makes December a truly festive period.

Temperature

In Sherwood, the month of December registers the lowest temperatures, averaging 44.1°F (6.7°C) at the peak and 34.5°F (1.4°C) at the lowest.

Humidity

The months with the highest humidity are January, February and December, with an average relative humidity of 84%.

Rainfall

December is the month with the most rainfall. Rain falls for 18.9 days and accumulates 4.57" (116mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall in Sherwood. In December, it is snowing for 0.9 days. Throughout December, 0.43" (11mm) of snow is accumulated. In Sherwood, Oregon, during the entire year, snow falls for 6.5 days and aggregates up to 3.94" (100mm) of snow.

Daylight

With an average of 8h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:31 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:50 am and sunset at 4:38 pm PST.

Sunshine

The average sunshine in December in Sherwood is 4.2h.

UV index

The months with the lowest UV index in Sherwood are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 2 in December translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

What is the coldest month?

December, with its average high-temperature of 44.1°F (6.7°C) and an average low-temperature of 34.5°F (1.4°C), holds the record as the coldest month.

Is it cold during December?

December temperatures vary between a high-temperature of 44.1°F (6.7°C) and a low-temperature of 34.5°F (1.4°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 84.2°F (29°C).

What is the most humid month?

January, February and December, with an average relative humidity of 84%, are most humid months in Sherwood.

What is the average humidity in December?

In Sherwood, the average relative humidity in December is 84%.

What is the wettest month?

December is the month with the most rainfall in Sherwood. Rain falls for 18.9 days and accumulates 4.57" (116mm) of precipitation.

How many days does it rain in December in Sherwood?

In Sherwood, Oregon, in December, it is raining for 18.9 days, with typically 4.57" (116mm) of accumulated precipitation.

How much does it snow in Sherwood in December?

In December, it is snowing for 0.9 days. Throughout December, 0.43" (11mm) of snow is accumulated.

What is the month with the shortest days in Sherwood?

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

How many hours of daylight does Sherwood have in December?

The average day length in December is 8h and 47min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:31 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:38 pm PST.

How long on average sun shines in December?

In Sherwood, 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 Sherwood, 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 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
Sherwood, OR

Average temperature in December - Sherwood, OR
  • Average high temperature in December: 44.1°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (44.1°F).

  • Average low temperature in December: 34.5°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).

Average pressure in December
Sherwood, OR

Average pressure in December - Sherwood, OR
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in December
Sherwood, OR

Average wind speed in December - Sherwood, OR
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

Average humidity in December
Sherwood, OR

Average humidity in December - Sherwood, OR
  • Average humidity in December: 84%

The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is August (63%).

Average rainfall in December
Sherwood, OR

Average rainfall in December - Sherwood, OR
  • Average rainfall in December: 4.57"

The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in December
Sherwood, OR

Average rainfall days in December - Sherwood, OR
  • Average rainfall days in December: 18.9 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.8 days).

Average snowfall in December
Sherwood, OR

Average snowfall in December - Sherwood, OR
  • Average snowfall in December: 0.43"

The month with the highest snowfall is February (1.57").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Sherwood, OR

Average snowfall days in December - Sherwood, OR
  • Average snowfall days in December: 0.9 days

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

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

Average daylight in December / Average sunshine in December - Sherwood, 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: 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
Sherwood, OR

Average sunshine days in December - Sherwood, OR
  • Average sunshine days in December: 10.4 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (8.6 days).

Average UV index in December
Sherwood, OR

Average UV index in December - Sherwood, 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
Sherwood, OR

Average cloud cover in December - Sherwood, OR
  • Average cloud cover in December: 56

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in December
Sherwood, OR

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

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

Sherwood, Oregon, USA

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