Average Weather in September in Terrossa Italy
Daily high temperatures decrease by 9°F, from 81°F to 71°F, rarely falling below 64°F or exceeding 89°F.
Daily low temperatures decrease by 7°F, from 62°F to 55°F, rarely falling below 49°F or exceeding 68°F.
For reference, on August 3, the hottest day of the year, temperatures in Terrossa typically range from 67°F to 86°F, while on January 12, the coldest day of the year, they range from 31°F to 43°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 Terrossa experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 33% to 44%.
The clearest day of the month is September 2, with clear, mostly clear, or partly cloudy conditions 67% of the time.
For reference, on November 19, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on July 21, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 74%.
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 Terrossa, the chance of a wet day over the course of September is essentially constant, remaining around 24% throughout.
For reference, the year's highest daily chance of a wet day is 32% on June 4, and its lowest chance is 14% on January 20.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Terrossa is gradually increasing, starting the month at 2.4 inches, when it rarely exceeds 4.1 inches or falls below 0.8 inches, and ending the month at 2.8 inches, when it rarely exceeds 5.2 inches or falls below 0.5 inches.
Average Monthly Rainfall in September
Over the course of September in Terrossa, 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, 31 minutes, implying an average daily decrease of 3 minutes, 8 seconds, and weekly decrease of 21 minutes, 58 seconds.
The shortest day of the month is September 30, with 11 hours, 46 minutes of daylight and the longest day is September 1, with 13 hours, 17 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Terrossa is 6:35 AM on September 1 and the latest sunrise is 36 minutes later at 7:11 AM on September 30.
The latest sunset is 7:52 PM on September 1 and the earliest sunset is 55 minutes earlier at 6:57 PM on September 30.
Daylight saving time is observed in Terrossa 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 5:26 AM and sets 15 hours, 41 minutes later, at 9:06 PM, while on December 21, the shortest day of the year, it rises at 7:51 AM and sets 8 hours, 42 minutes later, at 4:33 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September
The chance that a given day will be muggy in Terrossa is very rapidly decreasing during September, falling from 28% to 5% over the course of the month.
For reference, on August 5, the muggiest day of the year, there are muggy conditions 53% of the time, while on November 19, 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 Terrossa is essentially constant during September, remaining within 0.1 miles per hour of 5.0 miles per hour throughout.
For reference, on April 6, the windiest day of the year, the daily average wind speed is 5.9 miles per hour, while on August 10, the calmest day of the year, the daily average wind speed is 4.6 miles per hour.
Average Wind Speed in September
Wind Direction in September
Terrossa 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 Terrossa is decreasing during September, falling by 6°F, from 76°F to 70°F, over the course of the month.
Average Water Temperature in September
The growing season in Terrossa typically lasts for 8.5 months (261 days), from around March 6 to around November 22, rarely starting before February 10 or after March 28, and rarely ending before November 2 or after December 13.
The month of September in Terrossa 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 Terrossa are rapidly increasing during September, increasing by 497°F, from 2,909°F to 3,406°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Terrossa is decreasing during September, falling by 1.5 kWh, from 5.2 kWh to 3.7 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 Terrossa are 45.463 deg latitude, 11.319 deg longitude, and 236 ft elevation.
The topography within 2 miles of Terrossa contains very significant variations in elevation, with a maximum elevation change of 1,188 feet and an average elevation above sea level of 368 feet. Within 10 miles contains very significant variations in elevation (2,792 feet). Within 50 miles contains large variations in elevation (8,560 feet).
The area within 2 miles of Terrossa is covered by cropland (66%) and trees (25%), within 10 miles by cropland (60%) and trees (25%), and within 50 miles by cropland (58%) and trees (24%).
This report illustrates the typical weather in Terrossa 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 Terrossa.
For each station, the records are corrected for the elevation difference between that station and Terrossa 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 Terrossa is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Terrossa and a given station.
The stations contributing to this reconstruction are: Verona Villafranca Airport (61%, 34 kilometers, west); Istrana (24%, 64 kilometers, northeast); Paganella (meteorological station) (3.7%, 80 kilometers, north); and Bologna Guglielmo Marconi Airport (12%, 103 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .