Average Weather in October in Greenville Michigan, United States
Daily high temperatures decrease by 12°F, from 65°F to 53°F, rarely falling below 40°F or exceeding 77°F.
Daily low temperatures decrease by 9°F, from 46°F to 37°F, rarely falling below 27°F or exceeding 58°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 October
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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 October
The month of October in Greenville experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 39% to 49%.
The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 61% 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 October
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 October is decreasing, starting the month at 30% and ending it at 26%.
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 October
The average sliding 31-day rainfall during October in Greenville is gradually decreasing, starting the month at 3.1 inches, when it rarely exceeds 5.2 inches or falls below 1.2 inches, and ending the month at 2.6 inches, when it rarely exceeds 4.5 inches or falls below 0.9 inches.
Average Monthly Rainfall in October
Over the course of October in Greenville, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 24 minutes, implying an average daily decrease of 2 minutes, 49 seconds, and weekly decrease of 19 minutes, 40 seconds.
The shortest day of the month is October 31, with 10 hours, 19 minutes of daylight and the longest day is October 1, with 11 hours, 44 minutes of daylight.
Hours of Daylight and Twilight in October
The earliest sunrise of the month in Greenville is 7:38 AM on October 1 and the latest sunrise is 36 minutes later at 8:14 AM on October 31.
The latest sunset is 7:22 PM on October 1 and the earliest sunset is 48 minutes earlier at 6:34 PM on October 31.
Daylight saving time is observed in Greenville during 2018, but it neither starts nor ends during October, 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 and Daylight Saving Time in October
The chance that a given day will be muggy in Greenville is gradually decreasing during October, falling from 3% to 0% 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 October
The average hourly wind speed in Greenville is increasing during October, increasing from 9.8 miles per hour to 10.8 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 October
Wind Direction in October
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 decreasing during October, falling by 9°F, from 62°F to 53°F, over the course of the month.
Average Water Temperature in October
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 October in Greenville, the chance that a given day is within the growing season is very rapidly decreasing falling from 73% to 3% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in October
The average accumulated growing degree days in Greenville are gradually increasing during October, increasing by 124°F, from 2,477°F to 2,601°F, over the course of the month.
Growing Degree Days in October
The average daily incident shortwave solar energy in Greenville is decreasing during October, falling by 1.5 kWh, from 4.0 kWh to 2.5 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in October
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 .