Average Weather in May in Greenfield California, United States
Daily high temperatures increase by 7°F, from 81°F to 88°F, rarely falling below 70°F or exceeding 98°F.
Daily low temperatures increase by 6°F, from 56°F to 62°F, rarely falling below 48°F or exceeding 71°F.
For reference, on July 23, the hottest day of the year, temperatures in Greenfield typically range from 72°F to 99°F, while on December 30, the coldest day of the year, they range from 41°F to 59°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
Brenes, Spain (5,838 miles away); Ammi Moussa, Algeria (6,200 miles); and Sidi Bouzid, Tunisia (6,561 miles) are the far-away foreign places with temperatures most similar to Greenfield (view comparison).
The month of May in Greenfield experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 30% to 20%.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 80% of the time.
For reference, on February 22, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on August 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 91%.
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 Greenfield, the chance of a wet day over the course of May is decreasing, starting the month at 7% and ending it at 2%.
For reference, the year's highest daily chance of a wet day is 21% on February 20, and its lowest chance is 0% on July 29.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Greenfield is gradually decreasing, starting the month at 0.4 inches, when it rarely exceeds 1.1 inches or falls below -0.0 inches, and ending the month at 0.1 inches, when it rarely exceeds 0.3 inches or falls below -0.0 inches.
Average Monthly Rainfall in May
Over the course of May in Greenfield, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 45 minutes, implying an average daily increase of 1 minute, 29 seconds, and weekly increase of 10 minutes, 25 seconds.
The shortest day of the month is May 1, with 13 hours, 37 minutes of daylight and the longest day is May 31, with 14 hours, 22 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Greenfield is 6:04 AM on May 1 and the earliest sunrise is 22 minutes earlier at 5:42 AM on May 31.
The earliest sunset is 7:42 PM on May 1 and the latest sunset is 23 minutes later at 8:04 PM on May 31.
Daylight saving time is observed in Greenfield during 2018, 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 5:41 AM and sets 14 hours, 32 minutes later, at 8:14 PM, while on December 21, the shortest day of the year, it rises at 7:00 AM and sets 9 hours, 47 minutes later, at 4:47 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Greenfield is essentially constant during May, remaining around 0% throughout.
For reference, on August 25, the muggiest day of the year, there are muggy conditions 1% of the time, while on November 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 Greenfield is essentially constant during May, remaining around 7.0 miles per hour throughout.
For reference, on April 26, the windiest day of the year, the daily average wind speed is 7.0 miles per hour, while on September 4, the calmest day of the year, the daily average wind speed is 4.8 miles per hour.
Average Wind Speed in May
Wind Direction in May
While it does not do so every year, freezing temperatures are seen in Greenfield over some winters. The day least likely to be in the growing season is December 27, with a 65% chance.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Greenfield are rapidly increasing during May, increasing by 602°F, from 939°F to 1,541°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Greenfield is gradually increasing during May, rising by 0.9 kWh, from 7.4 kWh to 8.4 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 Greenfield are 35.269 deg latitude, -119.003 deg longitude, and 348 ft elevation.
The topography within 2 miles of Greenfield is essentially flat, with a maximum elevation change of 33 feet and an average elevation above sea level of 347 feet. Within 10 miles is essentially flat (581 feet). Within 50 miles contains significant variations in elevation (8,619 feet).
The area within 2 miles of Greenfield is covered by cropland (91%), within 10 miles by cropland (70%) and artificial surfaces (16%), and within 50 miles by shrubs (35%) and grassland (34%).
This report illustrates the typical weather in Greenfield 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 Greenfield.
For each station, the records are corrected for the elevation difference between that station and Greenfield 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 Greenfield is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Greenfield and a given station.
The stations contributing to this reconstruction are: Meadows Field (81%, 19 kilometers, north); Tehachapi Municipal Airport (5%, 53 kilometers, east); Sandberg (4.1%, 64 kilometers, southeast); Santa Barbara Municipal Airport (5%, 121 kilometers, southwest); and Santa Ynez Airport (5%, 123 kilometers, southwest).
Time zones for aiports and weather stations are provided by AskGeo.com .