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 brings the lowest temperatures, with an average high of 35.2°F (1.8°C) and an average low of 23.9°F (-4.5°C).Humidity
In December, the average relative humidity in Rupple is 83%.Rainfall
In Rupple, during December, the rain falls for 10.6 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Rupple, during the entire year, the rain falls for 112.8 days and collects up to 10.28" (261mm) of precipitation.Snowfall
January through April, September, November and December are months with snowfall. In Rupple, Washington, during December, snow falls for 5.5 days and regularly aggregates up to 2.87" (73mm) of snow. Throughout the year, in Rupple, there are 19.9 snowfall days, and 12.36" (314mm) of snow is accumulated.Daylight
December has the shortest days of the year in Rupple, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:26 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:45 am and sunset at 4:25 pm PST.
Sunshine
In December, the average sunshine in Rupple is 5.6h.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 reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What part of the year is the coldest in Rupple?
How cold is December in Rupple?
What is the average humidity in December in Rupple?
How many days does it rain in December in Rupple?
How many days does it snow in December in Rupple?
What is the month with the shortest days in Rupple?
How many hours of daylight does Rupple have in December?
When are sunrise and sunset in December in Rupple?
How long on average sun shines in December in Rupple?
When is the lowest UV index in Rupple?
What is the UV index intensity in December in Rupple?
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
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