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 is the coldest month, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 18.3°F (-7.6°C).Humidity
The average relative humidity in December is 90%.Rainfall
In December, the rain falls for 5.2 days. Throughout December, 0.43" (11mm) of precipitation is accumulated. In Inchelium, during the entire year, the rain falls for 86.5 days and collects up to 6.42" (163mm) of precipitation.Snowfall
January through April, September, November and December are months with snowfall. In December, in Inchelium, it is snowing for 7.5 days. Throughout December, 1.3" (33mm) of snow is accumulated. Throughout the year, in Inchelium, Washington, there are 24.6 snowfall days, and 6.38" (162mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 24min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 4:00 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:08 pm PST.
Sunshine
The average sunshine in December in Inchelium is 4.1h.UV index
The months with the lowest UV index in Inchelium are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 1 in December translates into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. To guard against the harmful effects of the Sun, minimize exposure during midday. Stay sun-safe with clothing that is both closely woven and worn loosely. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Inchelium?
How cold is it in Inchelium in December?
What is the average humidity in December in Inchelium?
How many days does it rain in December in Inchelium?
How many days does it snow in December in Inchelium?
What is the month with the shortest days in Inchelium?
What is the average length of the day in December in Inchelium?
When are sunrise and sunset in December in Inchelium?
How long on average sun shines in December in Inchelium?
When is the lowest UV index in Inchelium?
How high is the UV index in December in Inchelium?
Average temperature in December
Inchelium, WA
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is August (82.8°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (18.3°F).
Average pressure in December
Inchelium, WA
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Inchelium, WA
- Average wind speed in December: 3.4mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are January and December (3.4mph).
Average humidity in December
Inchelium, WA
- Average humidity in December: 90%
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Inchelium, WA
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is May (1.06").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in December
Inchelium, WA
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is September (4.9 days).
Average snowfall in December
Inchelium, WA
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in December
Inchelium, WA
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Inchelium, WA
- Average daylight in December: 8h and 2min
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: 4h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Inchelium, WA
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is September (23.8 days).
The month with the least sunshine days is June (17.3 days).
Average UV index in December
Inchelium, 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
Inchelium, WA
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Inchelium, WA
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (2mi).
Inchelium, Washington, USA
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