Average Weather in September in Letychiv Ukraine
Daily high temperatures decrease by 9°F, from 70°F to 61°F, rarely falling below 50°F or exceeding 80°F.
Daily low temperatures decrease by 7°F, from 51°F to 44°F, rarely falling below 35°F or exceeding 58°F.
For reference, on July 29, the hottest day of the year, temperatures in Letychiv typically range from 57°F to 76°F, while on February 2, the coldest day of the year, they range from 18°F to 30°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 Letychiv experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 40% to 48%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 60% of the time.
For reference, on December 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on August 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.
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 Letychiv, the chance of a wet day over the course of September is gradually decreasing, starting the month at 23% and ending it at 19%.
For reference, the year's highest daily chance of a wet day is 36% on June 26, and its lowest chance is 14% on March 6.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Letychiv is decreasing, starting the month at 1.9 inches, when it rarely exceeds 3.4 inches or falls below 0.6 inches, and ending the month at 1.3 inches, when it rarely exceeds 2.7 inches or falls below 0.2 inches.
Average Monthly Rainfall in September
Over the course of September in Letychiv, 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, 44 minutes, implying an average daily decrease of 3 minutes, 36 seconds, and weekly decrease of 25 minutes, 13 seconds.
The shortest day of the month is September 30, with 11 hours, 42 minutes of daylight and the longest day is September 1, with 13 hours, 27 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Letychiv is 6:25 AM on September 1 and the latest sunrise is 42 minutes later at 7:07 AM on September 30.
The latest sunset is 7:52 PM on September 1 and the earliest sunset is 1 hour, 2 minutes earlier at 6:50 PM on September 30.
Daylight saving time is observed in Letychiv 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 5:03 AM and sets 16 hours, 16 minutes later, at 9:19 PM, while on December 21, the shortest day of the year, it rises at 8:02 AM and sets 8 hours, 10 minutes later, at 4:12 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 Letychiv is essentially constant during September, remaining around 0% throughout.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 8% of the time, while on October 17, 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 Letychiv is gradually increasing during September, increasing from 8.7 miles per hour to 9.5 miles per hour over the course of the month.
For reference, on February 4, the windiest day of the year, the daily average wind speed is 11.6 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 7.7 miles per hour.
Average Wind Speed in September
The hourly average wind direction in Letychiv throughout September is predominantly from the west, with a peak proportion of 30% on September 30.
Wind Direction in September
The growing season in Letychiv typically lasts for 5.7 months (174 days), from around April 22 to around October 13, rarely starting before April 3 or after May 11, and rarely ending before September 25 or after November 1.
The month of September in Letychiv 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 83% 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 Letychiv are increasing during September, increasing by 223°F, from 1,750°F to 1,973°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Letychiv is rapidly decreasing during September, falling by 1.5 kWh, from 4.9 kWh to 3.4 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 Letychiv are 49.383 deg latitude, 27.631 deg longitude, and 912 ft elevation.
The topography within 2 miles of Letychiv contains only modest variations in elevation, with a maximum elevation change of 292 feet and an average elevation above sea level of 907 feet. Within 10 miles also contains only modest variations in elevation (482 feet). Within 50 miles contains only modest variations in elevation (919 feet).
The area within 2 miles of Letychiv is covered by cropland (56%), trees (16%), and water (15%), within 10 miles by cropland (62%) and trees (24%), and within 50 miles by cropland (68%) and trees (17%).
This report illustrates the typical weather in Letychiv, 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 is only a single weather station, Rivne International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Letychiv.
At a distance of 173 kilometers from Letychiv, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere .
The weight assigned to the MERRA-2 value depends on the distance from Letychiv to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 31%, making the weight assigned to the weather station 69%.
Time zones for airports and weather stations are provided by AskGeo.com .