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
Waller, Washington, notes the coldest temperatures in December, with a high average of 42.8°F (6°C) and a low of 32.7°F (0.4°C).Humidity
In December, the average relative humidity is 86%.Rainfall
The month with the most rainfall is December, when the rain falls for 19.2 days and typically aggregates up to 4.92" (125mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Waller, Washington, in December, during 1 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Waller, during the entire year, snow falls for 7.4 days and aggregates up to 3.78" (96mm) of snow.Daylight
December has the shortest days of the year in Waller, 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 4:21 pm. On the last day of December, sunrise is at 7:55 am and sunset at 4:29 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 4.2h of sunshine.UV index
The months with the lowest UV index in Waller are January, February, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What part of the year is the coldest in Waller?
Is December cold in Waller?
What is the average humidity in December in Waller?
What is the wettest month in Waller?
How much does it rain in Waller in December?
How many days does it snow in December in Waller?
What is the month with the shortest days in Waller?
What is the average length of the day in December in Waller?
What time are sunrise and sunset in December in Waller?
What is the month with the least sunshine in Waller?
How long on average sun shines in December in Waller?
When is the lowest UV index in Waller?
What is the UV index intensity in December in Waller?
Average temperature in December
Waller, WA
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in December
Waller, WA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in December
Waller, WA
- Average wind speed in December: 4.5mph
The windiest month (with the highest average wind speed) is March (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in December
Waller, WA
- Average humidity in December: 86%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Waller, WA
- Average rainfall in December: 4.92"
The wettest month (with the highest rainfall) is December (4.92").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Waller, WA
- Average rainfall days in December: 19.2 days
The month with the highest number of rainy days is March (21 days).
The month with the least rainy days is August (6.2 days).
Average snowfall in December
Waller, WA
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Waller, WA
- Average snowfall days in December: 1 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
Waller, WA
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in December
Waller, WA
- Average sunshine days in December: 10 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is February (8.2 days).
Average UV index in December
Waller, 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, October, November and December (UV index 2).
Average cloud cover in December
Waller, WA
- Average cloud cover in December: 56
The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Waller, WA
- Average visibility in December: 5mi
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (5mi).
Waller, Washington, USA
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