December weather forecastFort Rock, OR
December
Weather in December
The first month of the winter, December, is also an icy month in Fort Rock, Oregon, with an average temperature ranging between max 34.5°F (1.4°C) and min 23.7°F (-4.6°C).Temperature
December is Fort Rock's coldest month, registering average high temperatures of 34.5°F (1.4°C) and lows of 23.7°F (-4.6°C).Humidity
The most humid month is December, with an average relative humidity of 82%.Rainfall
In Fort Rock, during December, the rain falls for 6.6 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Fort Rock, during the entire year, the rain falls for 91.4 days and collects up to 15.67" (398mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Fort Rock, during December, snow falls for 16.8 days and regularly aggregates up to 12.8" (325mm) of snow. In Fort Rock, during the entire year, snow falls for 95 days and aggregates up to 73.15" (1858mm) 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 7:17 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:36 am and sunset at 4:38 pm PST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.6h of sunshine.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 reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 2 in December transforms into this advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fort Rock, OR
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (34.5°F).
- Average low temperature in December: 23.7°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (23.7°F).
Average pressure in December
Fort Rock, OR
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in December
Fort Rock, OR
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Fort Rock, OR
- Average humidity in December: 82%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is July (45%).
Average rainfall in December
Fort Rock, OR
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is February (2.13").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Fort Rock, OR
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in December
Fort Rock, OR
- Average snowfall in December: 12.8"
The month with the highest snowfall is February (16.06").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Fort Rock, OR
- Average snowfall days in December: 16.8 days
The month with the highest number of snowfall days is December (16.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Fort Rock, 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: 5h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in December
Fort Rock, OR
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is July (25.1 days).
The month with the least sunshine days is March (11.1 days).
Average UV index in December
Fort Rock, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Fort Rock, OR
- Average cloud cover in December: 45
The months with the most cloud cover are February and December (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in December
Fort Rock, OR
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
