Average Weather in September in Henryville Indiana, United States
In Henryville, the month of September is characterized by rapidly falling daily high temperatures, with daily highs decreasing by 10°F, from 84°F to 74°F over the course of the month, and rarely exceeding 91°F or dropping below 63°F.
Daily low temperatures decrease by 11°F, from 65°F to 54°F, rarely falling below 43°F or exceeding 73°F.
For reference, on July 21, the hottest day of the year, temperatures in Henryville typically range from 69°F to 86°F, while on January 29, the coldest day of the year, they range from 26°F to 41°F.
Average High and Low Temperature in September
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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 September
The month of September in Henryville experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 33% throughout the month.
The clearest day of the month is September 2, with clear, mostly clear, or partly cloudy conditions 68% of the time.
For reference, on January 2, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on August 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.
Cloud Cover Categories in September
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Henryville, the chance of a wet day over the course of September is essentially constant, remaining around 25% throughout.
For reference, the year's highest daily chance of a wet day is 41% on May 12, and its lowest chance is 22% on January 29.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Henryville is gradually increasing, starting the month at 2.7 inches, when it rarely exceeds 5.0 inches or falls below 0.8 inches, and ending the month at 3.0 inches, when it rarely exceeds 5.7 inches or falls below 1.0 inches.
Average Monthly Rainfall in September
Over the course of September in Henryville, 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, 11 minutes, implying an average daily decrease of 2 minutes, 27 seconds, and weekly decrease of 17 minutes, 12 seconds.
The shortest day of the month is September 30, with 11 hours, 49 minutes of daylight and the longest day is September 1, with 13 hours, 0 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Henryville is 7:12 AM on September 1 and the latest sunrise is 26 minutes later at 7:38 AM on September 30.
The latest sunset is 8:12 PM on September 1 and the earliest sunset is 46 minutes earlier at 7:26 PM on September 30.
Daylight saving time is observed in Henryville during 2017, but it neither starts nor ends during September, so the entire month is in daylight saving time.
For reference, on June 21, the longest day of the year, the Sun rises at 6:19 AM and sets 14 hours, 52 minutes later, at 9:10 PM, while on December 21, the shortest day of the year, it rises at 7:57 AM and sets 9 hours, 28 minutes later, at 5:25 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Henryville is very rapidly decreasing during September, falling from 43% to 10% over the course of the month.
For reference, on July 19, the muggiest day of the year, there are muggy conditions 64% of the time, while on January 11, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September
The average hourly wind speed in Henryville is gradually increasing during September, increasing from 5.6 miles per hour to 6.6 miles per hour over the course of the month.
For reference, on February 25, the windiest day of the year, the daily average wind speed is 9.1 miles per hour, while on July 31, the calmest day of the year, the daily average wind speed is 5.1 miles per hour.
Average Wind Speed in September
Wind Direction in September
The average daily incident shortwave solar energy in Henryville is decreasing during September, falling by 1.1 kWh, from 5.8 kWh to 4.7 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Henryville are 38.542 deg latitude, -85.768 deg longitude, and 561 ft elevation.
The topography within 2 miles of Henryville contains only modest variations in elevation, with a maximum elevation change of 164 feet and an average elevation above sea level of 544 feet. Within 10 miles contains only modest variations in elevation (604 feet). Within 50 miles also contains significant variations in elevation (810 feet).
The area within 2 miles of Henryville is covered by cropland (48%) and trees (47%), within 10 miles by trees (50%) and cropland (47%), and within 50 miles by trees (50%) and cropland (43%).
This report illustrates the typical weather in Henryville 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 Henryville.
For each station, the records are corrected for the elevation difference between that station and Henryville 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 Henryville is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Henryville and a given station.
The stations contributing to this reconstruction are: Bowman Field (56%, 36 kilometers, south); Monroe County Airport (12%, 99 kilometers, northwest); Huntingburg Airport (11%, 109 kilometers, west); Cincinnati/Northern Kentucky International Airport (11%, 110 kilometers, northeast); and Shelbyville Municipal Airport (10%, 115 kilometers, north).
Time zones for aiports and weather stations are provided by AskGeo.com .