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
With its high average temperature of 37°F (2.8°C) and a low of 25.7°F (-3.5°C), December is regarded as the coldest month.Humidity
In Donald, the average relative humidity in December is 79%.Rainfall
In Donald, in December, during 8.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Donald, during the entire year, the rain falls for 78.5 days and collects up to 5.16" (131mm) of precipitation.Snowfall
January through March, September, November and December are months with snowfall in Donald. In December, it is snowing for 3.5 days. Throughout December, 1.57" (40mm) of snow is accumulated. In Donald, during the entire year, snow falls for 12.8 days and aggregates up to 5.35" (136mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Donald.On the first day of the month, sunrise is at 7:25 am and sunset at 4:16 pm. On the last day of December, in Donald, sunrise is at 7:45 am and sunset at 4:24 pm PST.
Sunshine
In Donald, the average sunshine in December is 5.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Donald. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What is the coldest time of year in Donald?
How cold is it in Donald in December?
What is the average humidity in December in Donald?
How many days does it rain in December in Donald?
How much does it snow in Donald in December?
What is the month with the shortest days in Donald?
How many hours of daylight does Donald have in December?
When is the sunrise / sunset in December in Donald?
How many hours of sunshine does Donald have in December?
What are the months with the lowest UV index in Donald?
What is the UV index reading in December in Donald?
Average temperature in December
Donald, WA
- Average high temperature in December: 37°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is August (61.2°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in December
Donald, 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 (29.93"Hg).
Average wind speed in December
Donald, WA
- Average wind speed in December: 4.6mph
The windiest months (with the highest average wind speed) are April and June (7.1mph).
The calmest month (with the lowest average wind speed) is December (4.6mph).
Average humidity in December
Donald, WA
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in December
Donald, WA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is January (0.83").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Donald, WA
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is July (2.1 days).
Average snowfall in December
Donald, WA
- Average snowfall in December: 1.57"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days in December
Donald, WA
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Donald, 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 42min).
- Average sunshine in December: 5h and 5min
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 36min).
Average sunshine days in December
Donald, WA
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is July (27.3 days).
The month with the least sunshine days is February (17.9 days).
Average UV index in December
Donald, WA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Donald, WA
- Average cloud cover in December: 37
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in December
Donald, WA
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Donald, Washington, USA
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