December weather forecastSherwood, OR
December
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 8h and 48min
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 12min
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: 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: 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: 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: 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).
