Average Weather in May in Del Rey California, United States
In Del Rey, the month of May is characterized by rising daily high temperatures, with daily highs increasing by 8°F, from 80°F to 88°F over the course of the month, and rarely exceeding 99°F or dropping below 69°F.
Daily low temperatures increase by 6°F, from 54°F to 60°F, rarely falling below 47°F or exceeding 67°F.
For reference, on July 18, the hottest day of the year, temperatures in Del Rey typically range from 68°F to 98°F, while on December 30, the coldest day of the year, they range from 39°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 Del Rey experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 32% to 21%.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 79% of the time.
For reference, on February 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on August 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.
Cloud Cover Categories in May
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Del Rey, the chance of a wet day over the course of May is decreasing, starting the month at 9% and ending it at 5%.
For reference, the year's highest daily chance of a wet day is 26% on February 21, and its lowest chance is 0% on August 10.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Del Rey is gradually decreasing, starting the month at 0.7 inches, when it rarely exceeds 1.6 inches, and ending the month at 0.3 inches, when it rarely exceeds 0.9 inches or falls below -0.0 inches.
Average Monthly Rainfall in May
Over the course of May in Del Rey, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 47 minutes, implying an average daily increase of 1 minute, 34 seconds, and weekly increase of 10 minutes, 55 seconds.
The shortest day of the month is May 1, with 13 hours, 43 minutes of daylight and the longest day is May 31, with 14 hours, 30 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Del Rey is 6:04 AM on May 1 and the earliest sunrise is 23 minutes earlier at 5:41 AM on May 31.
The earliest sunset is 7:47 PM on May 1 and the latest sunset is 24 minutes later at 8:11 PM on May 31.
Daylight saving time is observed in Del Rey during 2017, 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 5:40 AM and sets 14 hours, 40 minutes later, at 8:20 PM, while on December 21, the shortest day of the year, it rises at 7:07 AM and sets 9 hours, 39 minutes later, at 4:46 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Del Rey is essentially constant during May, remaining around 0% throughout.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 1% 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
The average hourly wind speed in Del Rey is gradually increasing during May, increasing from 5.6 miles per hour to 6.2 miles per hour over the course of the month.
For reference, on May 31, the windiest day of the year, the daily average wind speed is 6.2 miles per hour, while on November 12, the calmest day of the year, the daily average wind speed is 4.1 miles per hour.
The highest daily average wind speed during May is 6.2 miles per hour on May 31.
Average Wind Speed in May
Wind Direction in May
The growing season in Del Rey typically lasts for 11 months (331 days), from around January 16 to around December 13, rarely starting after February 15, or ending before November 20.
The month of May in Del Rey 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 Del Rey is rapidly increasing during May, increasing by 584°F, from 801°F to 1,385°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Del Rey is gradually increasing during May, rising by 1.0 kWh, from 7.2 kWh to 8.2 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 Del Rey are 36.659 deg latitude, -119.594 deg longitude, and 338 ft elevation.
The topography within 2 miles of Del Rey is essentially flat, with a maximum elevation change of 30 feet and an average elevation above sea level of 339 feet. Within 10 miles is essentially flat (1,473 feet). Within 50 miles contains very significant variations in elevation (10,981 feet).
The area within 2 miles of Del Rey is covered by cropland (96%), within 10 miles by cropland (87%) and artificial surfaces (10%), and within 50 miles by cropland (52%) and grassland (21%).
This report illustrates the typical weather in Del Rey 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Del Rey.
For each station, the records are corrected for the elevation difference between that station and Del Rey 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 Del Rey is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Del Rey and a given station.
The stations contributing to this reconstruction are: Fresno Air Terminal Airport (62%, 17 kilometers, northwest); Hanford Municipal Airport (19%, 38 kilometers, south); Visalia Municipal Airport (17%, 42 kilometers, southeast); and Bishop Airport (1.9%, 135 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .