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
The coldest month is December, with an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 16.9°F (-8.4°C).Humidity
In December, the average relative humidity is 91%.Rainfall
In Kettle Falls, during December, the rain falls for 11.7 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, there are 156.3 rainfall days, and 16.18" (411mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, September through December. In Kettle Falls, in December, snow falls for 13.7 days, with typically accumulated 6.5" (165mm) of snow. In Kettle Falls, during the entire year, snow falls for 53.2 days and aggregates up to 25.16" (639mm) of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:24 am and sunset at 3:58 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 4:06 pm PST.
Sunshine
In Kettle Falls, the average sunshine in December is 4.3h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. When the Sun is at its strongest around midday, find shade and limit exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Consider carefully! The reflective quality of snow 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 are the coldest months?
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Kettle Falls have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Kettle Falls, WA
- Average high temperature in December: 28.9°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in December: 16.9°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is February (16°F).
Average pressure in December
Kettle Falls, WA
- Average pressure in December: 30.18"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in December
Kettle Falls, WA
- Average wind speed in December: 3mph
The windiest month (with the highest average wind speed) is April (3.9mph).
The calmest months (with the lowest average wind speed) are January, February and December (3mph).
Average humidity in December
Kettle Falls, WA
- Average humidity in December: 91%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
Kettle Falls, WA
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in December
Kettle Falls, WA
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in December
Kettle Falls, WA
- Average snowfall in December: 6.5"
The month with the highest snowfall is January (6.61").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in December
Kettle Falls, WA
- Average snowfall days in December: 13.7 days
The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Kettle Falls, WA
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 4h and 2min
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 48min).
Average sunshine days in December
Kettle Falls, WA
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is March (9 days).
Average UV index in December
Kettle Falls, 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 January, February, November and December (UV index 1).
Average cloud cover in December
Kettle Falls, WA
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Kettle Falls, WA
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Kettle Falls, Washington, USA
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