Average Weather in February in Jamestown California, United States
Daily high temperatures increase by 4°F, from 55°F to 60°F, rarely falling below 48°F or exceeding 69°F.
Daily low temperatures increase by 3°F, from 39°F to 42°F, rarely falling below 32°F or exceeding 49°F.
For reference, on July 18, the hottest day of the year, temperatures in Jamestown typically range from 64°F to 91°F, while on December 30, the coldest day of the year, they range from 38°F to 52°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 Jamestown experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 54% throughout the month. The highest chance of overcast or mostly cloudy conditions is 55% on February 21.
The clearest day of the month is February 1, with clear, mostly clear, or partly cloudy conditions 47% of the time.
For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 55%, while on July 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 91%.
Cloud Cover Categories in February
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Jamestown, the chance of a wet day over the course of February is essentially constant, remaining around 30% throughout.
For reference, the year's highest daily chance of a wet day is 31% on February 20, and its lowest chance is 0% on August 19.
Probability of Precipitation in February
The average sliding 31-day rainfall during February in Jamestown is essentially constant, remaining about 4.2 inches throughout, and rarely exceeding 8.3 inches or falling below 0.8 inches.
The highest average 31-day accumulation is 4.3 inches on February 16.
Average Monthly Rainfall in February
Over the course of February in Jamestown, 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, 0 minutes, implying an average daily increase of 2 minutes, 14 seconds, and weekly increase of 15 minutes, 40 seconds.
The shortest day of the month is February 1, with 10 hours, 19 minutes of daylight and the longest day is February 28, with 11 hours, 20 minutes of daylight.
Hours of Daylight and Twilight in February
The latest sunrise of the month in Jamestown is 7:05 AM on February 1 and the earliest sunrise is 31 minutes earlier at 6:34 AM on February 28.
The earliest sunset is 5:25 PM on February 1 and the latest sunset is 29 minutes later at 5:54 PM on February 28.
Daylight saving time is observed in Jamestown during 2018, 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, 48 minutes later, at 8:27 PM, while on December 21, the shortest day of the year, it rises at 7:14 AM and sets 9 hours, 32 minutes later, at 4:45 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in February
The chance that a given day will be muggy in Jamestown 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
The average hourly wind speed in Jamestown is essentially constant during February, remaining within 0.1 miles per hour of 5.7 miles per hour throughout.
For reference, on February 20, the windiest day of the year, the daily average wind speed is 5.7 miles per hour, while on September 18, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.
The highest daily average wind speed during February is 5.7 miles per hour on February 20.
Average Wind Speed in February
Wind Direction in February
The growing season in Jamestown typically lasts for 9.3 months (279 days), from around February 27 to around December 3, rarely starting after April 2, or ending before November 11.
During February in Jamestown, the chance that a given day is within the growing season is rapidly increasing rising from 23% to 51% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in February
The average accumulated growing degree days in Jamestown are gradually increasing during February, increasing by 59°F, from 31°F to 90°F, over the course of the month.
Growing Degree Days in February
The average daily incident shortwave solar energy in Jamestown is gradually increasing during February, rising by 0.9 kWh, from 3.0 kWh to 3.9 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 Jamestown are 37.953 deg latitude, -120.423 deg longitude, and 1,552 ft elevation.
The topography within 2 miles of Jamestown contains very significant variations in elevation, with a maximum elevation change of 899 feet and an average elevation above sea level of 1,585 feet. Within 10 miles contains very significant variations in elevation (3,632 feet). Within 50 miles also contains extreme variations in elevation (11,568 feet).
The area within 2 miles of Jamestown is covered by shrubs (57%) and grassland (43%), within 10 miles by shrubs (45%) and grassland (40%), and within 50 miles by grassland (26%) and trees (25%).
This report illustrates the typical weather in Jamestown 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 Jamestown.
For each station, the records are corrected for the elevation difference between that station and Jamestown 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 Jamestown is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Jamestown and a given station.
The stations contributing to this reconstruction are: Modesto City-County Airport (27%, 59 kilometers, southwest); Castle Airport (26%, 65 kilometers, south); Placerville Airport (19%, 90 kilometers, north); Bridgeport Sonora Junction (7%, 91 kilometers, northeast); Sacramento Mather Airport (15%, 103 kilometers, northwest); and Lake Tahoe Airport (7%, 112 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .