Contents
- 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
Weather in December
Temperature
In DuPont, December is the month with the lowest recorded average temperatures, measuring a high of 43.5°F (6.4°C) and a low of 34.2°F (1.2°C).Humidity
In December, the average relative humidity is 87%.Rainfall
The month with the most rainfall is December, when the rain falls for 18.6 days and typically aggregates up to 4.96" (126mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in DuPont. In DuPont, during December, snow falls for 1.4 days and regularly aggregates up to 0.24" (6mm) of snow. In DuPont, during the entire year, snow falls for 7.9 days and aggregates up to 4.45" (113mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 36min of daylight.On the first day of the month, sunrise is at 7:36 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:56 am and sunset at 4:31 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 3.9h of sunshine.UV index
January, February, 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 exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
Is it cold during December?
What is the average humidity in December?
What is the wettest month?
How much does it rain in DuPont in December?
How many days does it snow in December?
What is the month with the shortest days in DuPont?
How many hours of daylight does DuPont have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does DuPont have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
DuPont, WA
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in December: 34.2°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is February (34°F).
Average pressure in December
DuPont, WA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in December
DuPont, WA
- Average wind speed in December: 4.5mph
The windiest month (with the highest average wind speed) is March (5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
DuPont, WA
- Average humidity in December: 87%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
DuPont, WA
- Average rainfall in December: 4.96"
The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
DuPont, WA
- Average rainfall days in December: 18.6 days
The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in December
DuPont, WA
- Average snowfall in December: 0.24"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
DuPont, WA
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (2.8 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
DuPont, WA
- Average daylight in December: 8h and 4min
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 5min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in December
DuPont, WA
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is August (22.9 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in December
DuPont, WA
- 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
DuPont, WA
- Average cloud cover in December: 59
The months with the most cloud cover are January and December (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
DuPont, WA
- Average visibility in December: 4mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February and December (4mi).
DuPont, Washington, USA
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