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Average Weather in January in Buckhorn California, United States

In Buckhorn, the month of January is characterized by gradually rising daily high temperatures, with daily highs increasing by 2°F, from 51°F to 53°F over the course of the month, and rarely exceeding 63°F or dropping below 41°F.

Daily low temperatures are around 37°F, rarely falling below 27°F or exceeding 45°F.

For reference, on July 28, the hottest day of the year, temperatures in Buckhorn typically range from 62°F to 87°F, while on December 23, the coldest day of the year, they range from 36°F to 50°F.

Average High and Low Temperature in January

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in January in Buckhorn18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM4 AM8 AM12 PM4 PM8 PM12 AMDecFebcoldvery cold
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

The month of January in Buckhorn experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 55% throughout the month.

The clearest day of the month is January 26, with clear, mostly clear, or partly cloudy conditions 46% of the time.

For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.

Cloud Cover Categories in January

Cloud Cover Categories in January in Buckhorn1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 145%Jan 145%Jan 3145%Jan 3145%Jan 1144%Jan 1144%Jan 2145%Jan 2145%clearovercastmostly clearpartly cloudymostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Buckhorn, the chance of a wet day over the course of January is essentially constant, remaining around 30% throughout.

For reference, the year's highest daily chance of a wet day is 34% on February 21, and its lowest chance is 1% on July 23.

Over the course of January in Buckhorn, the chance of a day with only rain remains an essentially constant 27% throughout, the chance of a day with mixed snow and rain remains an essentially constant 3% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.

Probability of Precipitation in January

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January in Buckhorn is essentially constant, remaining about 4.7 inches throughout, and rarely exceeding 10.4 inches or falling below 0.4 inches.

Average Monthly Rainfall in January

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

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 Buckhorn is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.5 inches or falling below -0.0 inches.

Average Monthly Liquid-Equivalent Snowfall in January

The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Sun

Over the course of January in Buckhorn, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 43 minutes, implying an average daily increase of 1 minute, 26 seconds, and weekly increase of 9 minutes, 59 seconds.

The shortest day of the month is January 1, with 9 hours, 33 minutes of daylight and the longest day is January 31, with 10 hours, 16 minutes of daylight.

Hours of Daylight and Twilight in January

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month in Buckhorn is 7:19 AM on January 4 and the earliest sunrise is 12 minutes earlier at 7:07 AM on January 31.

The earliest sunset is 4:52 PM on January 1 and the latest sunset is 31 minutes later at 5:23 PM on January 31.

Daylight saving time is observed in Buckhorn 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 5:38 AM and sets 14 hours, 51 minutes later, at 8:29 PM, while on December 21, the shortest day of the year, it rises at 7:15 AM and sets 9 hours, 29 minutes later, at 4:44 PM.

Sunrise & Sunset with Twilight in January

The solar day over the course of January. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Buckhorn is essentially constant during January, remaining around 0% throughout.

Humidity Comfort Levels in January

The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Buckhorn is essentially constant during January, remaining within 0.1 miles per hour of 6.3 miles per hour throughout.

For reference, on December 22, the windiest day of the year, the daily average wind speed is 6.3 miles per hour, while on September 24, the calmest day of the year, the daily average wind speed is 5.4 miles per hour.

Average Wind Speed in January

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
The hourly average wind direction in Buckhorn throughout January is predominantly from the east, with a peak proportion of 48% on January 6.

Wind Direction in January

Wind Direction in January in BuckhornES1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebsoutheastwestnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Buckhorn typically lasts for 7.5 months (229 days), from around April 7 to around November 21, rarely starting before March 1 or after May 4, and rarely ending before October 27 or after December 18.

The month of January in Buckhorn is very likely fully outside of the growing season, with the chance that a given day is in the growing season reaching a low of 2% on January 7.

Time Spent in Various Temperature Bands and the Growing Season in January

Time Spent in Various Temperature Bands and the Growing Season in January in Buckhorn1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 12%Jan 12%Jan 315%Jan 315%Jan 112%Jan 112%Jan 214%Jan 214%freezingcoldcoolvery cold
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Buckhorn is essentially constant during January, remaining within 10°F of 18°F throughout.

Growing Degree Days in January

The average growing degree days accumulated over the course of January, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Buckhorn is gradually increasing during January, rising by 0.7 kWh, from 2.3 kWh to 2.9 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in January

Average Daily Incident Shortwave Solar Energy in January in Buckhorn1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.5 kWh1.0 kWh1.5 kWh2.0 kWh2.5 kWh3.0 kWh3.5 kWh4.0 kWh4.5 kWh5.0 kWh5.5 kWhDecFebJan 12.3 kWhJan 12.3 kWhJan 312.9 kWhJan 312.9 kWhJan 112.4 kWhJan 112.4 kWhJan 212.7 kWhJan 212.7 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Buckhorn are 38.452 deg latitude, -120.529 deg longitude, and 3,199 ft elevation.

The topography within 2 miles of Buckhorn contains very significant variations in elevation, with a maximum elevation change of 1,736 feet and an average elevation above sea level of 3,181 feet. Within 10 miles contains very significant variations in elevation (4,918 feet). Within 50 miles also contains extreme variations in elevation (11,526 feet).

The area within 2 miles of Buckhorn is covered by trees (60%) and shrubs (40%), within 10 miles by trees (69%) and shrubs (30%), and within 50 miles by trees (37%) and shrubs (26%).

Data Sources

This report illustrates the typical weather in Buckhorn 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Buckhorn.

For each station, the records are corrected for the elevation difference between that station and Buckhorn 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 Buckhorn is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Buckhorn and a given station.

The stations contributing to this reconstruction are: Placerville Airport (66%, 35 kilometers, northwest); Lake Tahoe Airport (13%, 68 kilometers, northeast); Stockton Metropolitan Airport (11%, 87 kilometers, southwest); and Bridgeport Sonora Junction (10%, 89 kilometers, east).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.