Average Weather in January in Greenville Michigan, United States
Daily high temperatures are around 30°F, rarely falling below 16°F or exceeding 43°F. The lowest daily average high temperature is 29°F on January 22.
Daily low temperatures decrease by 3°F, from 20°F to 17°F, rarely falling below -0°F or exceeding 33°F. The lowest daily average low temperature is 16°F on January 29.
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 January
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on January. 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 January
The month of January in Greenville experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 68% throughout the month. The highest chance of overcast or mostly cloudy conditions is 68% on January 26.
The clearest day of the month is January 16, with clear, mostly clear, or partly cloudy conditions 33% 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 January
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 January is gradually decreasing, starting the month at 21% and ending it at 17%.
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.
Over the course of January in Greenville, the chance of a day with only rain decreases from 8% to 5%, the chance of a day with mixed snow and rain remains an essentially constant 3% throughout, and the chance of a day with only snow remains an essentially constant 10% throughout.
Probability of Precipitation in January
The average sliding 31-day rainfall during January in Greenville is essentially constant, remaining about 0.7 inches throughout, and rarely exceeding 1.8 inches or falling below -0.0 inches.
Average Monthly Rainfall in January
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during January in Greenville is essentially constant, remaining about 0.6 inches throughout, and rarely exceeding 1.2 inches or falling below 0.1 inches.
The highest average 31-day liquid-equivalent accumulation is 0.7 inches on January 13.
Average Monthly Liquid-Equivalent Snowfall in January
Over the course of January in Greenville, 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, 53 seconds.
The shortest day of the month is January 1, with 9 hours, 4 minutes of daylight and the longest day is January 31, with 9 hours, 55 minutes of daylight.
Hours of Daylight and Twilight in January
The latest sunrise of the month in Greenville is 8:12 AM on January 4 and the earliest sunrise is 16 minutes earlier at 7:57 AM on January 31.
The earliest sunset is 5:16 PM on January 1 and the latest sunset is 35 minutes later at 5:51 PM on January 31.
Daylight saving time is observed in Greenville during 2018, but it neither starts nor ends during January, so the entire month is in standard 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 January
The chance that a given day will be muggy in Greenville is essentially constant during January, remaining around 0% throughout.
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 January
The average hourly wind speed in Greenville is essentially constant during January, remaining within 0.1 miles per hour of 12.1 miles per hour throughout.
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.
The highest daily average wind speed during January is 12.2 miles per hour on January 12.
Average Wind Speed in January
Wind Direction in January
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 gradually decreasing during January, falling by 3°F, from 40°F to 37°F, over the course of the month.
Average Water Temperature in January
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.
The month of January in Greenville is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in January
The average accumulated growing degree days in Greenville are essentially constant during January, remaining around 0°F throughout.
Growing Degree Days in January
The average daily incident shortwave solar energy in Greenville is gradually increasing during January, rising by 0.6 kWh, from 1.4 kWh to 2.0 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in January
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 .