Average Weather in September in Warsaw Indiana, United States
In Warsaw, the month of September is characterized by rapidly falling daily high temperatures, with daily highs decreasing by 10°F, from 80°F to 70°F over the course of the month, and rarely exceeding 88°F or dropping below 58°F.
Daily low temperatures decrease by 11°F, from 60°F to 49°F, rarely falling below 39°F or exceeding 69°F.
For reference, on July 19, the hottest day of the year, temperatures in Warsaw typically range from 64°F to 84°F, while on January 29, the coldest day of the year, they range from 19°F to 33°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 Warsaw experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 34% throughout the month.
The clearest day of the month is September 5, with clear, mostly clear, or partly cloudy conditions 68% of the time.
For reference, on January 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 63%, 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 Warsaw, the chance of a wet day over the course of September is rapidly decreasing, starting the month at 33% and ending it at 25%.
For reference, the year's highest daily chance of a wet day is 38% on May 28, and its lowest chance is 17% on January 29.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Warsaw is gradually decreasing, starting the month at 3.1 inches, when it rarely exceeds 5.6 inches or falls below 1.3 inches, and ending the month at 2.8 inches, when it rarely exceeds 4.8 inches or falls below 1.1 inches.
Average Monthly Rainfall in September
Over the course of September in Warsaw, 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, 18 minutes, implying an average daily decrease of 2 minutes, 42 seconds, and weekly decrease of 18 minutes, 56 seconds.
The shortest day of the month is September 30, with 11 hours, 47 minutes of daylight and the longest day is September 1, with 13 hours, 6 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Warsaw is 7:10 AM on September 1 and the latest sunrise is 29 minutes later at 7:39 AM on September 30.
The latest sunset is 8:15 PM on September 1 and the earliest sunset is 49 minutes earlier at 7:26 PM on September 30.
Daylight saving time is observed in Warsaw 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 6:10 AM and sets 15 hours, 9 minutes later, at 9:19 PM, while on December 21, the shortest day of the year, it rises at 8:05 AM and sets 9 hours, 12 minutes later, at 5:17 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Warsaw is very rapidly decreasing during September, falling from 29% to 5% over the course of the month.
For reference, on July 21, the muggiest day of the year, there are muggy conditions 46% of the time, while on January 1, 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 Warsaw is increasing during September, increasing from 7.9 miles per hour to 9.4 miles per hour over the course of the month.
For reference, on January 15, the windiest day of the year, the daily average wind speed is 12.6 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 7.3 miles per hour.
Average Wind Speed in September
Wind Direction in September
Warsaw 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 Warsaw is rapidly decreasing during September, falling by 8°F, from 71°F to 64°F, over the course of the month.
Average Water Temperature in September
The growing season in Warsaw typically lasts for 6.0 months (181 days), from around April 20 to around October 19, rarely starting before April 4 or after May 7, and rarely ending before September 30 or after November 6.
The month of September in Warsaw is very likely fully within the growing season, with the chance that a given day is in the growing season gradually decreasing from 100% to 90% over the course of the month.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Warsaw is increasing during September, increasing by 432°F, from 2,552°F to 2,984°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Warsaw is decreasing during September, falling by 1.3 kWh, from 5.6 kWh to 4.4 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 Warsaw are 41.238 deg latitude, -85.853 deg longitude, and 830 ft elevation.
The topography within 2 miles of Warsaw is essentially flat, with a maximum elevation change of 72 feet and an average elevation above sea level of 819 feet. Within 10 miles is essentially flat (213 feet). Within 50 miles contains only modest variations in elevation (659 feet).
The area within 2 miles of Warsaw is covered by artificial surfaces (73%) and cropland (10%), within 10 miles by cropland (86%), and within 50 miles by cropland (85%).
This report illustrates the typical weather in Warsaw 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Warsaw.
For each station, the records are corrected for the elevation difference between that station and Warsaw 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 Warsaw is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Warsaw and a given station.
The stations contributing to this reconstruction are: Warsaw Municipal Airport (94%, 4.3 kilometers, north); Fulton County Airport (4.3%, 34 kilometers, southwest); and Fort Wayne International Airport (1.7%, 62 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .