Average Weather in September in Cesa Italy
Daily high temperatures decrease by 10°F, from 82°F to 73°F, rarely falling below 64°F or exceeding 90°F.
Daily low temperatures decrease by 6°F, from 57°F to 52°F, rarely falling below 45°F or exceeding 63°F.
For reference, on August 4, the hottest day of the year, temperatures in Cesa typically range from 61°F to 88°F, while on January 31, the coldest day of the year, they range from 32°F to 49°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 Cesa experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 29% to 42%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 71% of the time.
For reference, on January 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 57%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 84%.
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 Cesa, the chance of a wet day over the course of September is rapidly increasing, starting the month at 19% and ending it at 26%.
For reference, the year's highest daily chance of a wet day is 31% on November 16, and its lowest chance is 12% on August 4.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Cesa is increasing, starting the month at 1.9 inches, when it rarely exceeds 3.6 inches or falls below 0.7 inches, and ending the month at 2.8 inches, when it rarely exceeds 5.0 inches or falls below 0.8 inches.
Average Monthly Rainfall in September
Over the course of September in Cesa, 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, 24 minutes, implying an average daily decrease of 2 minutes, 55 seconds, and weekly decrease of 20 minutes, 22 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, 12 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Cesa is 6:36 AM on September 1 and the latest sunrise is 32 minutes later at 7:08 AM on September 30.
The latest sunset is 7:48 PM on September 1 and the earliest sunset is 52 minutes earlier at 6:56 PM on September 30.
Daylight saving time is observed in Cesa during 2018, 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 5:32 AM and sets 15 hours, 24 minutes later, at 8:56 PM, while on December 21, the shortest day of the year, it rises at 7:41 AM and sets 8 hours, 58 minutes later, at 4:39 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September
The chance that a given day will be muggy in Cesa is decreasing during September, falling from 7% to 2% over the course of the month.
For reference, on August 7, the muggiest day of the year, there are muggy conditions 14% of the time, while on November 11, 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 Cesa is essentially constant during September, remaining within 0.1 miles per hour of 7.0 miles per hour throughout.
For reference, on February 24, the windiest day of the year, the daily average wind speed is 8.7 miles per hour, while on August 11, the calmest day of the year, the daily average wind speed is 6.5 miles per hour.
Average Wind Speed in September
Wind Direction in September
Cesa 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 Cesa is decreasing during September, falling by 4°F, from 75°F to 71°F, over the course of the month.
Average Water Temperature in September
The growing season in Cesa typically lasts for 7.4 months (228 days), from around March 30 to around November 12, rarely starting before March 6 or after April 24, and rarely ending before October 24 or after December 3.
The month of September in Cesa is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Cesa are rapidly increasing during September, increasing by 463°F, from 2,579°F to 3,042°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Cesa is rapidly decreasing during September, falling by 1.6 kWh, from 5.7 kWh to 4.1 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 Cesa are 43.316 deg latitude, 11.813 deg longitude, and 846 ft elevation.
The topography within 2 miles of Cesa contains only modest variations in elevation, with a maximum elevation change of 272 feet and an average elevation above sea level of 849 feet. Within 10 miles contains only modest variations in elevation (2,687 feet). Within 50 miles contains large variations in elevation (5,728 feet).
The area within 2 miles of Cesa is covered by cropland (93%), within 10 miles by cropland (67%) and trees (29%), and within 50 miles by trees (47%) and cropland (45%).
This report illustrates the typical weather in Cesa 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Cesa.
For each station, the records are corrected for the elevation difference between that station and Cesa 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 Cesa is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cesa and a given station.
The stations contributing to this reconstruction are: Arezzo Airfield (77%, 17 kilometers, north); Perugia San Francesco d'Assisi – Umbria International Airport (11%, 62 kilometers, southeast); Grosseto Airport (6%, 86 kilometers, southwest); and Viterbo (5%, 101 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .