December weather forecastOrcas, WA
December
Weather in December
The first month of the winter, December, is still a chilly month in Orcas, Washington, with temperature in the range of an average low of 40.6°F (4.8°C) and an average high of 45.3°F (7.4°C).Temperature
Orcas's coldest season falls during January, February and December, averaging a high-temperature of 45.3°F (7.4°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In December, the rain falls for 17.6 days. Throughout December, 2.95" (75mm) of precipitation is accumulated. Throughout the year, there are 167.7 rainfall days, and 23.46" (596mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Orcas, in December, during 1.3 snowfall days, 0.31" (8mm) of snow is typically accumulated. In Orcas, during the entire year, snow falls for 6.9 days and aggregates up to 3.43" (87mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:43 am and sunset at 4:18 pm. On the last day of December, sunrise is at 8:03 am and sunset at 4:26 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 4.1h of sunshine.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 value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Orcas, WA
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (64.9°F).
The months with the lowest average high temperature are January, February and December (45.3°F).
- Average low temperature in December: 40.6°F
The month with the highest average low temperature is August (57.7°F).
The coldest month (with the lowest average low temperature) is February (40.5°F).
Average pressure in December
Orcas, WA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in December
Orcas, WA
- Average wind speed in December: 10.5mph
The windiest month (with the highest average wind speed) is November (10.7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Orcas, WA
- Average humidity in December: 77%
The months with the highest relative humidity are January, August and September (79%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Orcas, WA
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is November (3.43").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Orcas, WA
- Average rainfall days in December: 17.6 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is August (5.3 days).
Average snowfall in December
Orcas, WA
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Orcas, WA
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is February (2.7 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
Orcas, WA
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in December
Orcas, WA
- Average sunshine days in December: 10.6 days
The month with the most sunshine days is August (24.7 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in December
Orcas, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Orcas, WA
- Average cloud cover in December: 56
The months with the most cloud cover are February and December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in December
Orcas, WA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
