Average Weather in September in Slavutych Ukraine
Daily high temperatures decrease by 11°F, from 70°F to 59°F, rarely falling below 49°F or exceeding 81°F.
Daily low temperatures decrease by 9°F, from 53°F to 44°F, rarely falling below 36°F or exceeding 59°F.
For reference, on July 27, the hottest day of the year, temperatures in Slavutych typically range from 59°F to 78°F, while on February 3, the coldest day of the year, they range from 18°F to 28°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 Slavutych experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 43% to 50%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 57% of the time.
For reference, on November 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 74%, while on August 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 66%.
Cloud Cover Categories in September
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Slavutych, the chance of a wet day over the course of September is essentially constant, remaining around 22% throughout.
For reference, the year's highest daily chance of a wet day is 33% on June 26, and its lowest chance is 15% on March 21.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Slavutych is essentially constant, remaining about 1.6 inches throughout, and rarely exceeding 3.3 inches or falling below 0.5 inches.
Average Monthly Rainfall in September
Over the course of September in Slavutych, 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, 53 minutes, implying an average daily decrease of 3 minutes, 53 seconds, and weekly decrease of 27 minutes, 14 seconds.
The shortest day of the month is September 30, with 11 hours, 41 minutes of daylight and the longest day is September 1, with 13 hours, 34 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Slavutych is 6:09 AM on September 1 and the latest sunrise is 46 minutes later at 6:56 AM on September 30.
The latest sunset is 7:43 PM on September 1 and the earliest sunset is 1 hour, 6 minutes earlier at 6:36 PM on September 30.
Daylight saving time is observed in Slavutych during 2021, 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 4:39 AM and sets 16 hours, 39 minutes later, at 9:18 PM, while on December 21, the shortest day of the year, it rises at 8:00 AM and sets 7 hours, 50 minutes later, at 3:49 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September
The figure below presents a compact representation of key lunar data for September 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
Moon Rise, Set & Phases in September
The chance that a given day will be muggy in Slavutych is essentially constant during September, remaining around 0% throughout.
For reference, on July 20, the muggiest day of the year, there are muggy conditions 5% 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
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Slavutych is gradually increasing during September, increasing from 8.9 miles per hour to 9.4 miles per hour over the course of the month.
For reference, on January 25, the windiest day of the year, the daily average wind speed is 11.2 miles per hour, while on July 28, the calmest day of the year, the daily average wind speed is 8.0 miles per hour.
Average Wind Speed in September
The hourly average wind direction in Slavutych throughout September is predominantly from the west, with a peak proportion of 33% on September 3.
Wind Direction in September
The growing season in Slavutych typically lasts for 6.0 months (181 days), from around April 16 to around October 14, rarely starting before March 28 or after May 4, and rarely ending before September 26 or after November 1.
The month of September in Slavutych is more likely than not fully within the growing season, with the chance that a given day is in the growing season decreasing from 100% to 85% 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 Slavutych are increasing during September, increasing by 227°F, from 1,933°F to 2,160°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Slavutych is rapidly decreasing during September, falling by 1.6 kWh, from 4.6 kWh to 3.1 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 Slavutych are 51.520 deg latitude, 30.734 deg longitude, and 446 ft elevation.
The topography within 2 miles of Slavutych contains only modest variations in elevation, with a maximum elevation change of 151 feet and an average elevation above sea level of 471 feet. Within 10 miles also contains only modest variations in elevation (338 feet). Within 50 miles also contains only modest variations in elevation (390 feet).
The area within 2 miles of Slavutych is covered by trees (80%), within 10 miles by trees (43%) and cropland (37%), and within 50 miles by cropland (42%) and trees (38%).
This report illustrates the typical weather in Slavutych, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Slavutych.
For each station, the records are corrected for the elevation difference between that station and Slavutych 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 Slavutych is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Slavutych and a given station.
Time zones for airports and weather stations are provided by AskGeo.com .