December weather forecastWestfir, OR
December
Weather in December
December, the first month of the winter in Westfir, is also a frosty month, with an average temperature ranging between max 42.8°F (6°C) and min 29.5°F (-1.4°C).Temperature
Westfir's December weather reaches an average high of 42.8°F (6°C) and an average low of 29.5°F (-1.4°C), making it the coldest month.Humidity
In December, the average relative humidity is 84%.Rainfall
December is the month with the most rainfall. Rain falls for 17.4 days and accumulates 5.83" (148mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Westfir, during December, snow falls for 3.7 days and regularly aggregates up to 2.44" (62mm) of snow. In Westfir, during the entire year, snow falls for 21.1 days and aggregates up to 25.35" (644mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:24 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:43 am and sunset at 4:42 pm PST.
Sunshine
In December, the average sunshine in Westfir is 4.2h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Westfir, OR
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is August (78.3°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in December: 29.5°F
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (29.5°F).
Average pressure in December
Westfir, OR
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in December
Westfir, OR
- Average wind speed in December: 5.1mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Westfir, OR
- Average humidity in December: 84%
The month with the highest relative humidity is March (86%).
The months with the lowest relative humidity are July and August (66%).
Average rainfall in December
Westfir, OR
- Average rainfall in December: 5.83"
The wettest month (with the highest rainfall) is December (5.83").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in December
Westfir, OR
- Average rainfall days in December: 17.4 days
The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is July (4.5 days).
Average snowfall in December
Westfir, OR
- Average snowfall in December: 2.44"
The month with the highest snowfall is February (9.41").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Westfir, OR
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Westfir, OR
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Westfir, OR
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is July (25.2 days).
The month with the least sunshine days is March (9 days).
Average UV index in December
Westfir, OR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Westfir, OR
- Average cloud cover in December: 55
The month with the most cloud cover is March (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in December
Westfir, OR
- Average visibility in December: 4mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
