Average Weather in January in Susanville California, United States
Daily high temperatures increase by 3°F, from 40°F to 44°F, rarely falling below 32°F or exceeding 53°F.
Daily low temperatures increase by 2°F, from 25°F to 27°F, rarely falling below 13°F or exceeding 36°F.
For reference, on July 29, the hottest day of the year, temperatures in Susanville typically range from 56°F to 87°F, while on January 1, the coldest day of the year, they range from 25°F to 40°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 Susanville experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 56% throughout the month. The highest chance of overcast or mostly cloudy conditions is 58% on January 10.
The clearest day of the month is January 27, with clear, mostly clear, or partly cloudy conditions 45% of the time.
For reference, on January 10, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on July 28, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 88%.
Cloud Cover Categories in January
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Susanville, the chance of a wet day over the course of January is essentially constant, remaining around 28% throughout.
For reference, the year's highest daily chance of a wet day is 33% on February 28, and its lowest chance is 2% on August 23.
Over the course of January in Susanville, the chance of a day with only rain increases from 16% to 19%, 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 3% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Susanville is essentially constant, remaining about 2.8 inches throughout, and rarely exceeding 6.5 inches or falling below 0.1 inches.
The lowest average 31-day accumulation is 2.7 inches on January 15.
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 Susanville is essentially constant, remaining about 0.4 inches throughout, and rarely exceeding 1.6 inches or falling to 0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.5 inches on January 3.
Average Monthly Liquid-Equivalent Snowfall in January
Over the course of January in Susanville, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 46 minutes, implying an average daily increase of 1 minute, 32 seconds, and weekly increase of 10 minutes, 42 seconds.
The shortest day of the month is January 1, with 9 hours, 21 minutes of daylight and the longest day is January 31, with 10 hours, 7 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Susanville is 7:25 AM on January 4 and the earliest sunrise is 13 minutes earlier at 7:12 AM on January 31.
The earliest sunset is 4:47 PM on January 1 and the latest sunset is 33 minutes later at 5:19 PM on January 31.
Daylight saving time is observed in Susanville 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 5:32 AM and sets 15 hours, 4 minutes later, at 8:36 PM, while on December 21, the shortest day of the year, it rises at 7:22 AM and sets 9 hours, 17 minutes later, at 4:39 PM.
Sunrise & Sunset with Twilight in January
The chance that a given day will be muggy in Susanville is essentially constant during January, remaining around 0% throughout.
Humidity Comfort Levels in January
The average hourly wind speed in Susanville is essentially constant during January, remaining within 0.1 miles per hour of 5.6 miles per hour throughout.
For reference, on March 27, the windiest day of the year, the daily average wind speed is 6.5 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 5.1 miles per hour.
The lowest daily average wind speed during January is 5.5 miles per hour on January 20.
Average Wind Speed in January
Wind Direction in January
The growing season in Susanville typically lasts for 5.4 months (166 days), from around May 6 to around October 19, rarely starting before April 15 or after May 28, and rarely ending before September 29 or after November 7.
The month of January in Susanville 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 Susanville are essentially constant during January, remaining within 1°F of 1°F throughout.
Growing Degree Days in January
The average daily incident shortwave solar energy in Susanville 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 Susanville are 40.416 deg latitude, -120.653 deg longitude, and 4,350 ft elevation.
The topography within 2 miles of Susanville contains significant variations in elevation, with a maximum elevation change of 686 feet and an average elevation above sea level of 4,297 feet. Within 10 miles contains significant variations in elevation (3,648 feet). Within 50 miles also contains extreme variations in elevation (8,655 feet).
The area within 2 miles of Susanville is covered by shrubs (68%), cropland (18%), and artificial surfaces (12%), within 10 miles by shrubs (48%) and trees (40%), and within 50 miles by shrubs (51%) and trees (43%).
This report illustrates the typical weather in Susanville 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Susanville.
For each station, the records are corrected for the elevation difference between that station and Susanville 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 Susanville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Susanville and a given station.
The stations contributing to this reconstruction are: Reno Stead Airport (28%, 106 kilometers, southeast); Alturas Municipal Airport (24%, 120 kilometers, north); Chico Municipal Airport (14%, 123 kilometers, southwest); Blue Canyon-Nyack Airport (21%, 127 kilometers, south); and Redding Municipal Airport (13%, 140 kilometers, west).
Time zones for aiports and weather stations are provided by AskGeo.com .