Average Weather in May in Greenville Michigan, United States
Daily high temperatures increase by 10°F, from 64°F to 73°F, rarely falling below 51°F or exceeding 84°F.
Daily low temperatures increase by 10°F, from 43°F to 52°F, rarely falling below 32°F or exceeding 63°F.
For reference, on July 19, the hottest day of the year, temperatures in Greenville typically range from 61°F to 81°F, while on January 29, the coldest day of the year, they range from 16°F to 29°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 Greenville experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 52% to 47%.
The clearest day of the month is May 31, with clear, mostly clear, or partly cloudy conditions 53% of the time.
For reference, on January 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 68%, while on August 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 68%.
Cloud Cover Categories in May
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Greenville, the chance of a wet day over the course of May is gradually increasing, starting the month at 29% and ending it at 32%.
For reference, the year's highest daily chance of a wet day is 34% on June 13, and its lowest chance is 16% on February 4.
Probability of Precipitation in May
The average sliding 31-day rainfall during May in Greenville is essentially constant, remaining about 3.0 inches throughout, and rarely exceeding 5.3 inches or falling below 1.1 inches.
The highest average 31-day accumulation is 3.0 inches on May 31.
Average Monthly Rainfall in May
Over the course of May in Greenville, 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, 1 minute, implying an average daily increase of 2 minutes, 1 second, and weekly increase of 14 minutes, 10 seconds.
The shortest day of the month is May 1, with 14 hours, 8 minutes of daylight and the longest day is May 31, with 15 hours, 9 minutes of daylight.
Hours of Daylight and Twilight in May
The latest sunrise of the month in Greenville is 6:34 AM on May 1 and the earliest sunrise is 30 minutes earlier at 6:04 AM on May 31.
The earliest sunset is 8:42 PM on May 1 and the latest sunset is 31 minutes later at 9:13 PM on May 31.
Daylight saving time is observed in Greenville 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 6:01 AM and sets 15 hours, 23 minutes later, at 9:24 PM, while on December 21, the shortest day of the year, it rises at 8:09 AM and sets 8 hours, 59 minutes later, at 5:08 PM.
Sunrise & Sunset with Twilight in May
The chance that a given day will be muggy in Greenville is increasing during May, rising from 0% to 7% over the course of the month.
For reference, on July 27, the muggiest day of the year, there are muggy conditions 32% of the time, while on November 16, 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 Greenville is decreasing during May, decreasing from 11.0 miles per hour to 9.4 miles per hour over the course of the month.
For reference, on January 12, the windiest day of the year, the daily average wind speed is 12.2 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 7.7 miles per hour.
Average Wind Speed in May
Wind Direction in May
Greenville 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 Greenville is rapidly increasing during May, rising by 7°F, from 40°F to 47°F, over the course of the month.
Average Water Temperature in May
The growing season in Greenville typically lasts for 5.2 months (160 days), from around May 2 to around October 9, rarely starting before April 14 or after May 20, and rarely ending before September 22 or after October 25.
During May in Greenville, the chance that a given day is within the growing season is very rapidly increasing rising from 48% to 98% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in May
The average accumulated growing degree days in Greenville are increasing during May, increasing by 280°F, from 136°F to 416°F, over the course of the month.
Growing Degree Days in May
The average daily incident shortwave solar energy in Greenville is gradually increasing during May, rising by 0.8 kWh, from 5.8 kWh to 6.7 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 Greenville are 43.178 deg latitude, -85.253 deg longitude, and 846 ft elevation.
The topography within 2 miles of Greenville contains only modest variations in elevation, with a maximum elevation change of 161 feet and an average elevation above sea level of 841 feet. Within 10 miles also contains only modest variations in elevation (276 feet). Within 50 miles contains only modest variations in elevation (787 feet).
The area within 2 miles of Greenville is covered by artificial surfaces (53%), trees (25%), and cropland (17%), within 10 miles by cropland (52%) and trees (37%), and within 50 miles by cropland (59%) and trees (29%).
This report illustrates the typical weather in Greenville 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 Greenville.
For each station, the records are corrected for the elevation difference between that station and Greenville 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 Greenville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Greenville and a given station.
The stations contributing to this reconstruction are: Gerald R. Ford International Airport (29%, 40 kilometers, southwest); Gratiot Community Airport (21%, 49 kilometers, east); Roben-Hood Airport (14%, 63 kilometers, north); Fremont Municipal Airport (13%, 67 kilometers, northwest); Lansing, Capital City Airport (12%, 70 kilometers, southeast); and Fitch H Beach Airport (11%, 76 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .