December weather forecastAberdeen, WA
December
Weather in December
December, the first month of the winter in Aberdeen, is also a frosty month, with an average temperature fluctuating between 44.2°F (6.8°C) and 36.5°F (2.5°C).Temperature
Aberdeen's coldest month, December, registers temperatures that range from a high of 44.2°F (6.8°C) to a low of 36.5°F (2.5°C).Humidity
November and December, with an average relative humidity of 88%, are the most humid months.Rainfall
In Aberdeen, in December, it is raining for 12.7 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, there are 113.5 rainfall days, and 10.24" (260mm) of precipitation is accumulated.Snowfall
April through December are months without snowfall.Ocean temperature
In Aberdeen, the average seawater temperature in December is 49.1°F (9.5°C).Note: It is life-risking to swim in 49.1°F (9.5°C). Briefly staying in 55.4°F (13°C) waters feels unsettling, and temperatures below 50°F (10°C) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:41 am and sunset at 4:28 pm. On the last day of December, sunrise is at 8:00 am and sunset at 4:36 pm PST.
Sunshine
The average sunshine in December is 3.6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Aberdeen. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Aberdeen, WA
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is August (71.4°F).
The month with the lowest average high temperature is December (44.2°F).
- Average low temperature in December: 36.5°F
The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is December (36.5°F).
Average pressure in December
Aberdeen, WA
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in December
Aberdeen, WA
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is January (7mph).
The calmest month (with the lowest average wind speed) is September (4.7mph).
Average humidity in December
Aberdeen, WA
- Average humidity in December: 88%
The months with the highest relative humidity are November and December (88%).
The month with the lowest relative humidity is July (78%).
Average rainfall in December
Aberdeen, WA
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is January (1.93").
The driest months (with the least rainfall) are July and August (0.12").
Average rainfall days in December
Aberdeen, WA
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in December
Aberdeen, WA
- Average snowfall in December: 0"
The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Aberdeen, WA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in December
Aberdeen, WA
- Average sea temperature in December: 49.2°F
The best month for swimming (with the highest average sea temperature) is July (56.3°F).
The coldest month (with the lowest average sea temperature) is February (47.4°F).
Average daylight in December /
Average sunshine in December
Aberdeen, WA
- Average daylight in December: 8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 3h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Aberdeen, WA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is August (25.4 days).
The months with the least sunshine days are February and March (14.1 days).
Average UV index in December
Aberdeen, 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
Aberdeen, WA
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Aberdeen, WA
- Average visibility in December: 4mi
The months with the highest visibility are February, March, April, May, June and November (5mi).
The months with the lowest visibility are January, July, August, September, October and December (4mi).
