Average Weather in January in Downieville California, United States
In Downieville, the month of January is characterized by essentially constant daily high temperatures, with daily highs around 48°F throughout the month, rarely exceeding 60°F or dropping below 36°F.
Daily low temperatures are around 36°F, rarely falling below 27°F or exceeding 46°F.
For reference, on August 3, the hottest day of the year, temperatures in Downieville typically range from 66°F to 83°F, while on December 23, the coldest day of the year, they range from 36°F to 47°F.
Average High and Low Temperature in January
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. 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 January
The month of January in Downieville experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 59% throughout the month.
The clearest day of the month is January 26, with clear, mostly clear, or partly cloudy conditions 42% of the time.
For reference, on February 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 62%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 89%.
Cloud Cover Categories in January
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Downieville, the chance of a wet day over the course of January is essentially constant, remaining around 32% throughout.
For reference, the year's highest daily chance of a wet day is 37% on March 1, and its lowest chance is 1% on July 19.
Over the course of January in Downieville, the chance of a day with only rain remains an essentially constant 24% throughout, the chance of a day with mixed snow and rain remains an essentially constant 6% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Downieville is essentially constant, remaining about 5.6 inches throughout, and rarely exceeding 12.8 inches or falling below 0.4 inches.
The lowest average 31-day accumulation is 5.4 inches on January 17.
Average Monthly Rainfall in January
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 January in Downieville is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.4 inches or falling to 0.0 inches.
Average Monthly Liquid-Equivalent Snowfall in January
Over the course of January in Downieville, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 45 minutes, implying an average daily increase of 1 minute, 29 seconds, and weekly increase of 10 minutes, 25 seconds.
The shortest day of the month is January 1, with 9 hours, 27 minutes of daylight and the longest day is January 31, with 10 hours, 11 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Downieville is 7:24 AM on January 4 and the earliest sunrise is 13 minutes earlier at 7:11 AM on January 31.
The earliest sunset is 4:50 PM on January 1 and the latest sunset is 32 minutes later at 5:22 PM on January 31.
Daylight saving time is observed in Downieville during 2017, but it neither starts nor ends during January, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:36 AM and sets 14 hours, 58 minutes later, at 8:34 PM, while on December 21, the shortest day of the year, it rises at 7:20 AM and sets 9 hours, 22 minutes later, at 4:42 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy in Downieville is essentially constant during January, remaining around 0% throughout.
Humidity Comfort Levels in January
The average hourly wind speed in Downieville is essentially constant during January, remaining within 0.1 miles per hour of 5.5 miles per hour throughout.
For reference, on December 18, the windiest day of the year, the daily average wind speed is 5.7 miles per hour, while on August 6, the calmest day of the year, the daily average wind speed is 4.5 miles per hour.
Average Wind Speed in January
Wind Direction in January
The average daily incident shortwave solar energy in Downieville is gradually increasing during January, rising by 0.7 kWh, from 2.1 kWh to 2.8 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January
For the purposes of this report, the geographical coordinates of Downieville are 39.559 deg latitude, -120.827 deg longitude, and 4,114 ft elevation.
The topography within 2 miles of Downieville contains large variations in elevation, with a maximum elevation change of 2,654 feet and an average elevation above sea level of 3,916 feet. Within 10 miles contains large variations in elevation (6,198 feet). Within 50 miles also contains extreme variations in elevation (10,187 feet).
The area within 2 miles of Downieville is covered by trees (95%), within 10 miles by trees (91%), and within 50 miles by trees (59%) and shrubs (25%).
This report illustrates the typical weather in Downieville 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 Downieville.
For each station, the records are corrected for the elevation difference between that station and Downieville 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 Downieville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Downieville and a given station.
The stations contributing to this reconstruction are: Blue Canyon-Nyack Airport (71%, 33 kilometers, south); Oroville Municipal Airport (15%, 68 kilometers, west); and Beale Air Force Base (14%, 71 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .