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
December is Rupple's coldest month, registering average high temperatures of 35.2°F (1.8°C) and lows of 23.9°F (-4.5°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In Rupple, in December, during 10.6 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 112.8 rainfall days, and 10.28" (261mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September, November and December. In Rupple, in December, snow falls for 5.5 days, with typically accumulated 2.87" (73mm) of snow. Throughout the year, there are 19.9 snowfall days, and 12.36" (314mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:26 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:25 pm PST.
Sunshine
In December, the average sunshine is 5.6h.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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. 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
What part of the year is the coldest?
How cold is it in December?
What is the average humidity in December?
How much does it rain in Rupple in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rupple have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Rupple have in December?
When is the lowest UV index in Rupple?
What is the UV index intensity in December?
Average temperature in December
Rupple, WA
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is August (83.1°F).
The month with the lowest average high temperature is December (35.2°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in December
Rupple, WA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.94"Hg).
Average wind speed in December
Rupple, WA
- Average wind speed in December: 4.5mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (4.5mph).
Average humidity in December
Rupple, WA
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (43%).
Average rainfall in December
Rupple, WA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is January (1.61").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in December
Rupple, WA
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (3.1 days).
Average snowfall in December
Rupple, WA
- Average snowfall in December: 2.87"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in December
Rupple, WA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Rupple, WA
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Rupple, WA
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is July (25.9 days).
The month with the least sunshine days is February (12.6 days).
Average UV index in December
Rupple, 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
Rupple, WA
- Average cloud cover in December: 40
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in December
Rupple, WA
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Rupple, Washington, USA
Weather forecast for your location
2. Allow the app to use your location