Average Weather in May in Windsor California, United States
Daily high temperatures increase by 5°F, from 73°F to 78°F, rarely falling below 63°F or exceeding 90°F.
Daily low temperatures increase by 4°F, from 46°F to 50°F, rarely falling below 40°F or exceeding 55°F.
For reference, on July 4, the hottest day of the year, temperatures in Windsor typically range from 53°F to 85°F, while on January 1, the coldest day of the year, they range from 37°F to 56°F.
Average High and Low Temperature in May
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. 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 May
The month of May in Windsor experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 40% to 28%.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 72% of the time.
For reference, on January 10, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 59%, while on July 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.
Cloud Cover Categories in May
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Windsor, the chance of a wet day over the course of May is decreasing, starting the month at 12% and ending it at 6%.
For reference, the year's highest daily chance of a wet day is 35% on February 20, and its lowest chance is 0% on July 26.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Windsor is decreasing, starting the month at 1.2 inches, when it rarely exceeds 3.0 inches or falls below 0.1 inches, and ending the month at 0.5 inches, when it rarely exceeds 2.1 inches or falls below -0.0 inches.
Average Monthly Rainfall in May
Over the course of May in Windsor, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 51 minutes, implying an average daily increase of 1 minute, 42 seconds, and weekly increase of 11 minutes, 52 seconds.
The shortest day of the month is May 1, with 13 hours, 49 minutes of daylight and the longest day is May 31, with 14 hours, 40 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Windsor is 6:14 AM on May 1 and the earliest sunrise is 25 minutes earlier at 5:49 AM on May 31.
The earliest sunset is 8:03 PM on May 1 and the latest sunset is 26 minutes later at 8:28 PM on May 31.
Daylight saving time is observed in Windsor during 2019, but it neither starts nor ends during May, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 5:47 AM and sets 14 hours, 52 minutes later, at 8:38 PM, while on December 22, the shortest day of the year, it rises at 7:25 AM and sets 9 hours, 28 minutes later, at 4:54 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Windsor is essentially constant during May, remaining around 0% throughout.
For reference, on September 16, 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 May
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Windsor is essentially constant during May, remaining within 0.1 miles per hour of 7.9 miles per hour throughout.
For reference, on June 6, the windiest day of the year, the daily average wind speed is 8.0 miles per hour, while on October 21, the calmest day of the year, the daily average wind speed is 6.3 miles per hour.
Average Wind Speed in May
Wind Direction in May
Windsor 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 Windsor is essentially constant during May, remaining around 52°F throughout.
The lowest average surface water temperature during May is 51°F on May 13.
Average Water Temperature in May
The growing season in Windsor typically lasts for 9.1 months (278 days), from around February 24 to around November 29, rarely starting before January 8 or after March 25, and rarely ending before November 8 or after December 30.
The month of May in Windsor is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Windsor are increasing during May, increasing by 316°F, from 501°F to 817°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Windsor is increasing during May, rising by 1.0 kWh, from 6.8 kWh to 7.9 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in May
For the purposes of this report, the geographical coordinates of Windsor are 38.547 deg latitude, -122.816 deg longitude, and 125 ft elevation.
The topography within 2 miles of Windsor contains only modest variations in elevation, with a maximum elevation change of 315 feet and an average elevation above sea level of 135 feet. Within 10 miles contains only modest variations in elevation (1,923 feet). Within 50 miles contains very significant variations in elevation (6,079 feet).
The area within 2 miles of Windsor is covered by cropland (54%), artificial surfaces (29%), and grassland (17%), within 10 miles by cropland (32%) and trees (25%), and within 50 miles by water (27%) and shrubs (27%).
This report illustrates the typical weather in Windsor 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Windsor.
For each station, the records are corrected for the elevation difference between that station and Windsor 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 Windsor is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Windsor and a given station.
Time zones for aiports and weather stations are provided by AskGeo.com .