Average Weather in July in Ionia Michigan, United States
The highest daily average high temperature is 81°F on July 19.
Daily low temperatures are around 61°F, rarely falling below 50°F or exceeding 71°F. The highest daily average low temperature is 62°F on July 20.
For reference, on July 19, the hottest day of the year, temperatures in Ionia typically range from 62°F to 81°F, while on January 29, the coldest day of the year, they range from 17°F to 30°F.
Average High and Low Temperature in July
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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 July
The month of July in Ionia experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 36% throughout the month.
The clearest day of the month is July 29, with clear, mostly clear, or partly cloudy conditions 66% 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 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
Cloud Cover Categories in July
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Ionia, the chance of a wet day over the course of July is gradually increasing, starting the month at 30% and ending it at 33%.
For reference, the year's highest daily chance of a wet day is 34% on August 5, and its lowest chance is 17% on February 4.
Probability of Precipitation in July
The average sliding 31-day rainfall during July in Ionia is gradually increasing, starting the month at 2.7 inches, when it rarely exceeds 4.5 inches or falls below 1.2 inches, and ending the month at 3.0 inches, when it rarely exceeds 4.7 inches or falls below 1.4 inches.
The lowest average 31-day accumulation is 2.7 inches on July 4.
Average Monthly Rainfall in July
Over the course of July in Ionia, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 46 minutes, implying an average daily decrease of 1 minute, 32 seconds, and weekly decrease of 10 minutes, 46 seconds.
The shortest day of the month is July 31, with 14 hours, 32 minutes of daylight and the longest day is July 1, with 15 hours, 18 minutes of daylight.
Hours of Daylight and Twilight in July
The earliest sunrise of the month in Ionia is 6:05 AM on July 1 and the latest sunrise is 25 minutes later at 6:30 AM on July 31.
The latest sunset is 9:23 PM on July 1 and the earliest sunset is 21 minutes earlier at 9:02 PM on July 31.
Daylight saving time is observed in Ionia during 2017, but it neither starts nor ends during July, 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, 22 minutes later, at 9:23 PM, while on December 21, the shortest day of the year, it rises at 8:08 AM and sets 9 hours, 0 minutes later, at 5:08 PM.
Sunrise & Sunset with Twilight in July
The chance that a given day will be muggy in Ionia is increasing during July, rising from 25% to 35% over the course of the month.
The highest chance of a muggy day during July is 35% on July 29.
For reference, on July 28, the muggiest day of the year, there are muggy conditions 35% 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 July
The average hourly wind speed in Ionia is gradually decreasing during July, decreasing from 8.6 miles per hour to 7.8 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 12.4 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 July
Wind Direction in July
Ionia 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 Ionia is rapidly increasing during July, rising by 9°F, from 62°F to 70°F, over the course of the month.
Average Water Temperature in July
The growing season in Ionia typically lasts for 5.4 months (164 days), from around May 1 to around October 12, rarely starting before April 13 or after May 20, and rarely ending before September 24 or after October 29.
The month of July in Ionia is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in July
The average accumulated growing degree days in Ionia are rapidly increasing during July, increasing by 620°F, from 957°F to 1,577°F, over the course of the month.
Growing Degree Days in July
The average daily incident shortwave solar energy in Ionia is gradually decreasing during July, falling by 0.6 kWh, from 7.1 kWh to 6.5 kWh, over the course of the month.
The highest average daily incident shortwave solar energy during July is 7.1 kWh on July 1.
Average Daily Incident Shortwave Solar Energy in July
For the purposes of this report, the geographical coordinates of Ionia are 42.987 deg latitude, -85.071 deg longitude, and 784 ft elevation.
The topography within 2 miles of Ionia contains only modest variations in elevation, with a maximum elevation change of 226 feet and an average elevation above sea level of 738 feet. Within 10 miles also contains only modest variations in elevation (266 feet). Within 50 miles contains only modest variations in elevation (673 feet).
The area within 2 miles of Ionia is covered by cropland (52%), artificial surfaces (30%), and trees (17%), within 10 miles by cropland (77%) and trees (18%), and within 50 miles by cropland (66%) and trees (23%).
This report illustrates the typical weather in Ionia 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 Ionia.
For each station, the records are corrected for the elevation difference between that station and Ionia 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 Ionia is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Ionia and a given station.
The stations contributing to this reconstruction are: Gerald R. Ford International Airport (29%, 39 kilometers, west); Lansing, Capital City Airport (22%, 46 kilometers, southeast); Gratiot Community Airport (21%, 49 kilometers, northeast); Fitch H Beach Airport (19%, 51 kilometers, southeast); and Roben-Hood Airport (8%, 88 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .