Average Weather in February in Cool California, United States
In Cool, the month of February is characterized by gradually rising daily high temperatures, with daily highs increasing by 3°F, from 57°F to 60°F over the course of the month, and rarely exceeding 69°F or dropping below 50°F.
Daily low temperatures increase by 2°F, from 41°F to 44°F, rarely falling below 35°F or exceeding 50°F.
For reference, on July 28, the hottest day of the year, temperatures in Cool typically range from 67°F to 93°F, while on December 30, the coldest day of the year, they range from 39°F to 54°F.
Average High and Low Temperature in February
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on February. 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 February
The month of February in Cool experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 58% throughout the month. The highest chance of overcast or mostly cloudy conditions is 59% on February 21.
The clearest day of the month is February 1, with clear, mostly clear, or partly cloudy conditions 43% of the time.
For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 59%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%.
Cloud Cover in February
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Cool, the chance of a wet day over the course of February is gradually increasing, starting the month at 32% and ending it at 34%.
For reference, the year's highest daily chance of a wet day is 34% on February 20, and its lowest chance is 0% on July 21.
Probability of Precipitation in February
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 February in Cool is essentially constant, remaining about 5.3 inches throughout, and rarely exceeding 10.5 inches or falling below 1.1 inches.
The highest average 31-day accumulation is 5.5 inches on February 17.
Average Monthly Rainfall in February
Over the course of February in Cool, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 3 minutes, implying an average daily increase of 2 minutes, 19 seconds, and weekly increase of 16 minutes, 15 seconds.
The shortest day of the month is February 1, with 10 hours, 16 minutes of daylight and the longest day is February 28, with 11 hours, 19 minutes of daylight.
Hours of Daylight and Twilight in February
The latest sunrise of the month in Cool is 7:09 AM on February 1 and the earliest sunrise is 32 minutes earlier at 6:37 AM on February 28.
The earliest sunset is 5:25 PM on February 1 and the latest sunset is 30 minutes later at 5:56 PM on February 28.
Daylight saving time is observed in Cool during 2017, but it neither starts nor ends during February, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:39 AM and sets 14 hours, 54 minutes later, at 8:32 PM, while on December 21, the shortest day of the year, it rises at 7:19 AM and sets 9 hours, 26 minutes later, at 4:45 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in February
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 Cool is essentially constant during February, remaining around 0% throughout.
For reference, on September 10, 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 February
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 Cool is essentially constant during February, remaining around 3.3 miles per hour throughout.
For reference, on December 18, the windiest day of the year, the daily average wind speed is 3.4 miles per hour, while on October 4, the calmest day of the year, the daily average wind speed is 2.8 miles per hour.
The highest daily average wind speed during February is 3.3 miles per hour on February 20.
Average Wind Speed in February
Wind Direction in February
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 Cool is gradually increasing during February, rising by 0.9 kWh, from 2.8 kWh to 3.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in February
For the purposes of this report, the geographical coordinates of Cool are 38.887 deg latitude, -121.015 deg longitude, and 1,381 ft elevation.
The topography within 2 miles of Cool contains very significant variations in elevation, with a maximum elevation change of 1,257 feet and an average elevation above sea level of 1,431 feet. Within 10 miles contains very significant variations in elevation (2,464 feet). Within 50 miles contains large variations in elevation (9,915 feet).
The area within 2 miles of Cool is covered by grassland (53%), shrubs (26%), and trees (20%), within 10 miles by shrubs (39%) and grassland (30%), and within 50 miles by trees (35%) and cropland (21%).
This report illustrates the typical weather in Cool 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 Cool.
For each station, the records are corrected for the elevation difference between that station and Cool 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 Cool is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cool and a given station.
The stations contributing to this reconstruction are: Auburn Municipal Airport (85%, 10 kilometers, northwest); Placerville Airport (9%, 30 kilometers, southeast); and Sacramento Mather Airport (6%, 43 kilometers, southwest).
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.