December weather forecastCusick, WA
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Cusick, Washington, with temperature in the range of an average high of 28.8°F (-1.8°C) and an average low of 18°F (-7.8°C).Temperature
The month of December sees the lowest average temperatures, reaching 28.8°F (-1.8°C) at the peak and 18°F (-7.8°C) at the low.Humidity
The average relative humidity in December is 92%.Rainfall
In December, in Cusick, the rain falls for 8.3 days. Throughout December, 2.87" (73mm) of precipitation is accumulated. Throughout the year, there are 130.2 rainfall days, and 24.17" (614mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In Cusick, Washington, during December, snow falls for 21.7 days and regularly aggregates up to 20.04" (509mm) of snow. In Cusick, during the entire year, snow falls for 122.5 days and aggregates up to 103.78" (2636mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Cusick.On the first day of the month, sunrise is at 7:20 am and sunset at 3:56 pm. On the last day of December, in Cusick, sunrise is at 7:40 am and sunset at 4:04 pm PST.
Sunshine
In Cusick, Washington, the average sunshine in December is 3.3h.UV index
February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cusick, WA
- Average high temperature in December: 28.8°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (28.8°F).
- Average low temperature in December: 18°F
The month with the highest average low temperature is August (50.2°F).
The coldest months (with the lowest average low temperature) are February and December (18°F).
Average pressure in December
Cusick, WA
- Average pressure in December: 30.18"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Cusick, WA
- Average wind speed in December: 3.3mph
The windiest month (with the highest average wind speed) is April (4.4mph).
The calmest month (with the lowest average wind speed) is December (3.3mph).
Average humidity in December
Cusick, WA
- Average humidity in December: 92%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (51%).
Average rainfall in December
Cusick, WA
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is January (2.99").
The driest month (with the least rainfall) is August (0.51").
Average rainfall days in December
Cusick, WA
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is April (17.2 days).
The months with the least rainy days are February and August (6.8 days).
Average snowfall in December
Cusick, WA
- Average snowfall in December: 20.04"
The month with the highest snowfall is January (23.39").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Cusick, WA
- Average snowfall days in December: 21.7 days
The month with the highest number of snowfall days is December (21.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Cusick, WA
- Average daylight in December: 8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Cusick, WA
- Average sunshine days in December: 9.4 days
The month with the most sunshine days is August (21.9 days).
The months with the least sunshine days are February, March and April (7.8 days).
Average UV index in December
Cusick, WA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in December
Cusick, WA
- Average cloud cover in December: 66
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Cusick, WA
- Average visibility in December: 3mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
