Average Weather in December in Mount Hood Village Oregon, United States
The lowest daily average high temperature is 37°F on December 30.
Daily low temperatures decrease by 3°F, from 32°F to 29°F, rarely falling below 18°F or exceeding 40°F. The lowest daily average low temperature is 29°F on December 30.
For reference, on August 4, the hottest day of the year, temperatures in Mount Hood Village typically range from 53°F to 80°F, while on December 30, the coldest day of the year, they range from 29°F to 37°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in December
The month of December in Mount Hood Village experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 78% throughout the month. The highest chance of overcast or mostly cloudy conditions is 79% on December 1.
The clearest day of the month is December 20, with clear, mostly clear, or partly cloudy conditions 24% of the time.
For reference, on December 1, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 79%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 80%.
Cloud Cover Categories in December
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Mount Hood Village, the chance of a wet day over the course of December is rapidly decreasing, starting the month at 58% and ending it at 51%.
For reference, the year's highest daily chance of a wet day is 60% on November 27, and its lowest chance is 5% on August 4.
Over the course of December in Mount Hood Village, the chance of a day with only rain decreases from 43% to 28%, the chance of a day with mixed snow and rain increases from 11% to 15%, and the chance of a day with only snow increases from 4% to 8%.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Mount Hood Village is rapidly decreasing, starting the month at 7.8 inches, when it rarely exceeds 13.1 inches or falls below 2.9 inches, and ending the month at 5.9 inches, when it rarely exceeds 9.9 inches or falls below 2.1 inches.
Average Monthly Rainfall in December
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during December in Mount Hood Village is increasing, starting the month at 0.9 inches, when it rarely exceeds 2.3 inches or falls below 0.1 inches, and ending the month at 1.8 inches, when it rarely exceeds 4.3 inches or falls below 0.2 inches.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Mount Hood Village, the length of the day is essentially constant. The shortest day of the month is December 21, with 8 hours, 43 minutes of daylight and the longest day is December 1, with 8 hours, 59 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Mount Hood Village is 7:27 AM on December 1 and the latest sunrise is 20 minutes later at 7:47 AM on December 31.
The earliest sunset is 4:24 PM on December 10 and the latest sunset is 10 minutes later at 4:34 PM on December 31.
Daylight saving time is observed in Mount Hood Village during 2018, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:19 AM and sets 15 hours, 40 minutes later, at 8:59 PM, while on December 21, the shortest day of the year, it rises at 7:44 AM and sets 8 hours, 43 minutes later, at 4:27 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in December
The chance that a given day will be muggy in Mount Hood Village is essentially constant during December, remaining around 0% throughout.
For reference, on August 4, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December
The average hourly wind speed in Mount Hood Village is essentially constant during December, remaining within 0.1 miles per hour of 5.5 miles per hour throughout.
For reference, on December 29, the windiest day of the year, the daily average wind speed is 5.6 miles per hour, while on August 12, the calmest day of the year, the daily average wind speed is 3.8 miles per hour.
The highest daily average wind speed during December is 5.6 miles per hour on December 29.
Average Wind Speed in December
Wind Direction in December
The growing season in Mount Hood Village typically lasts for 5.8 months (175 days), from around April 26 to around October 18, rarely starting before April 4 or after May 17, and rarely ending before September 27 or after November 9.
The month of December in Mount Hood Village is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Mount Hood Village are essentially constant during December, remaining around 1,652°F throughout.
Growing Degree Days in December
The average daily incident shortwave solar energy in Mount Hood Village is essentially constant during December, remaining around 1.1 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 1.0 kWh on December 26.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Mount Hood Village are 45.355 deg latitude, -121.981 deg longitude, and 1,972 ft elevation.
The topography within 2 miles of Mount Hood Village contains large variations in elevation, with a maximum elevation change of 2,333 feet and an average elevation above sea level of 1,741 feet. Within 10 miles contains large variations in elevation (4,386 feet). Within 50 miles also contains extreme variations in elevation (11,158 feet).
The area within 2 miles of Mount Hood Village is covered by shrubs (64%) and trees (36%), within 10 miles by trees (82%) and shrubs (17%), and within 50 miles by trees (47%) and shrubs (29%).
This report illustrates the typical weather in Mount Hood Village year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Mount Hood Village.
For each station, the records are corrected for the elevation difference between that station and Mount Hood Village according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Mount Hood Village is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Mount Hood Village and a given station.
The stations contributing to this reconstruction are: Portland–Troutdale Airport (48%, 40 kilometers, northwest); The Dalles Municipal Airport (35%, 70 kilometers, northeast); and Roberts Field-Redmond Municipal Airport (17%, 139 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .