Average Weather in January in Piñon Hills California, United States
Daily high temperatures increase by 2°F, from 53°F to 55°F, rarely falling below 43°F or exceeding 65°F.
Daily low temperatures are around 33°F, rarely falling below 25°F or exceeding 41°F.
For reference, on July 28, the hottest day of the year, temperatures in Piñon Hills typically range from 63°F to 90°F, while on December 26, the coldest day of the year, they range from 32°F to 53°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 Piñon Hills experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 41% throughout the month.
The clearest day of the month is January 21, with clear, mostly clear, or partly cloudy conditions 60% of the time.
For reference, on February 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on September 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.
Cloud Cover Categories in January
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Piñon Hills, the chance of a wet day over the course of January is essentially constant, remaining around 15% throughout.
For reference, the year's highest daily chance of a wet day is 19% on February 20, and its lowest chance is 0% on June 21.
Over the course of January in Piñon Hills, the chance of a day with only rain remains an essentially constant 13% throughout, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Piñon Hills is essentially constant, remaining about 2.0 inches throughout, and rarely exceeding 5.7 inches.
Average Monthly Rainfall in January
Over the course of January in Piñon Hills, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 36 minutes, implying an average daily increase of 1 minute, 13 seconds, and weekly increase of 8 minutes, 28 seconds.
The shortest day of the month is January 1, with 9 hours, 54 minutes of daylight and the longest day is January 31, with 10 hours, 31 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Piñon Hills is 6:57 AM on January 6 and the earliest sunrise is 9 minutes earlier at 6:48 AM on January 31.
The earliest sunset is 4:51 PM on January 1 and the latest sunset is 28 minutes later at 5:19 PM on January 31.
Daylight saving time is observed in Piñon Hills during 2018, 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, 28 minutes later, at 8:06 PM, while on December 21, the shortest day of the year, it rises at 6:53 AM and sets 9 hours, 51 minutes later, at 4:44 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy in Piñon Hills is essentially constant during January, remaining around 0% throughout.
For reference, on August 11, the muggiest day of the year, there are muggy conditions 0% of the time, while on September 11, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in January
The average hourly wind speed in Piñon Hills is essentially constant during January, remaining within 0.2 miles per hour of 7.7 miles per hour throughout.
For reference, on April 11, the windiest day of the year, the daily average wind speed is 7.9 miles per hour, while on September 9, the calmest day of the year, the daily average wind speed is 6.0 miles per hour.
Average Wind Speed in January
Wind Direction in January
Piñon Hills is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Piñon Hills is essentially constant during January, remaining around 59°F throughout.
Average Water Temperature in January
The growing season in Piñon Hills typically lasts for 7.5 months (230 days), from around March 29 to around November 14, rarely starting before February 25 or after April 21, and rarely ending before October 26 or after December 6.
The month of January in Piñon Hills is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in January
The average accumulated growing degree days in Piñon Hills are essentially constant during January, remaining within 18°F of 18°F throughout.
Growing Degree Days in January
The average daily incident shortwave solar energy in Piñon Hills is gradually increasing during January, rising by 0.7 kWh, from 3.0 kWh to 3.7 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 Piñon Hills are 34.433 deg latitude, -117.647 deg longitude, and 4,242 ft elevation.
The topography within 2 miles of Piñon Hills contains very significant variations in elevation, with a maximum elevation change of 1,529 feet and an average elevation above sea level of 4,279 feet. Within 10 miles contains very significant variations in elevation (7,024 feet). Within 50 miles also contains extreme variations in elevation (10,787 feet).
The area within 2 miles of Piñon Hills is covered by shrubs (100%), within 10 miles by shrubs (86%) and trees (12%), and within 50 miles by shrubs (71%) and artificial surfaces (16%).
This report illustrates the typical weather in Piñon Hills 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 6 weather stations near enough to contribute to our estimation of the temperature and dew point in Piñon Hills.
For each station, the records are corrected for the elevation difference between that station and Piñon Hills 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 Piñon Hills is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Piñon Hills and a given station.
The stations contributing to this reconstruction are: Southern California Logistics Airport (29%, 29 kilometers, northeast); Ontario International Airport (9%, 41 kilometers, south); Mount Wilson (21%, 45 kilometers, southwest); Palmdale United States Air Force Plant 42 Airport (18%, 46 kilometers, northwest); San Bernardino International Airport (9%, 53 kilometers, southeast); and Edwards Air Force Base (14%, 56 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .