Average Weather in San Donnino Italy
In San Donnino, the summers are short, hot, and mostly clear and the winters are long, cold, and partly cloudy. Over the course of the year, the temperature typically varies from 36°F to 90°F and is rarely below 26°F or above 97°F.
Based on the beach/pool score, the best time of year to visit San Donnino for hot-weather activities is from late June to late August.
The hot season lasts for 2.8 months, from June 15 to September 9, with an average daily high temperature above 82°F. The hottest day of the year is August 5, with an average high of 90°F and low of 67°F.
The cool season lasts for 3.8 months, from November 18 to March 10, with an average daily high temperature below 58°F. The coldest day of the year is January 11, with an average low of 36°F and high of 51°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, 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 San Donnino, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in San Donnino begins around June 6 and lasts for 3.5 months, ending around September 22. On July 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 83% of the time, and overcast or mostly cloudy 17% of the time.
The cloudier part of the year begins around September 22 and lasts for 8.5 months, ending around June 6. On November 26, the cloudiest day of the year, the sky is overcast or mostly cloudy 59% of the time, and clear, mostly clear, or partly cloudy 41% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in San Donnino varies throughout the year.
The wetter season lasts 9.0 months, from September 6 to June 5, with a greater than 22% chance of a given day being a wet day. The chance of a wet day peaks at 32% on November 4.
The drier season lasts 3.0 months, from June 5 to September 6. The smallest chance of a wet day is 13% on July 15.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 32% on November 4.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. San Donnino experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in San Donnino. The most rain falls during the 31 days centered around November 4, with an average total accumulation of 3.3 inches.
The least rain falls around July 22, with an average total accumulation of 0.9 inches.
Average Monthly Rainfall
The length of the day in San Donnino varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 55 minutes of daylight; the longest day is June 21, with 15 hours, 28 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:32 AM on June 15, and the latest sunrise is 2 hours, 17 minutes later at 7:49 AM on January 2. The earliest sunset is at 4:37 PM on December 9, and the latest sunset is 4 hours, 24 minutes later at 9:01 PM on June 27.
Daylight saving time (DST) is observed in San Donnino during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
San Donnino experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.1 months, from June 14 to September 17, during which time the comfort level is muggy, oppressive, or miserable at least 9% of the time. The muggiest day of the year is August 7, with muggy conditions 34% of the time.
The least muggy day of the year is February 23, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in San Donnino experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.4 months, from October 14 to April 27, with average wind speeds of more than 6.4 miles per hour. The windiest day of the year is February 24, with an average hourly wind speed of 7.5 miles per hour.
The calmer time of year lasts for 5.6 months, from April 27 to October 14. The calmest day of the year is August 10, with an average hourly wind speed of 5.4 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in San Donnino varies throughout the year.
The wind is most often from the east for 3.0 days, from January 1 to January 4; for 1.8 months, from February 2 to March 27; and for 2.8 months, from September 20 to December 15, with a peak percentage of 36% on October 28. The wind is most often from the north for 1.9 weeks, from January 4 to January 17; for 2.3 weeks, from January 17 to February 2; and for 2.4 weeks, from December 15 to January 1, with a peak percentage of 30% on January 31. The wind is most often from the west for 4.4 months, from May 9 to September 20, with a peak percentage of 42% on August 3.
San Donnino 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 water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.7 months, from June 29 to September 19, with an average temperature above 73°F. The day of the year with the warmest water is August 10, with an average temperature of 77°F.
The time of year with cooler water lasts for 4.4 months, from December 15 to April 26, with an average temperature below 60°F. The day of the year with the coolest water is February 26, with an average temperature of 56°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in San Donnino throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit San Donnino for general outdoor tourist activities are from mid May to mid July and from late August to early October, with a peak score in the third week of September.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit San Donnino for hot-weather activities is from late June to late August, with a peak score in the second week of July.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in San Donnino typically lasts for 8.5 months (261 days), from around March 10 to around November 26, rarely starting before February 12 or after April 2, and rarely ending before November 6 or after December 17.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in San Donnino should appear around March 9, only rarely appearing before February 19 or after March 27.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.2 months, from May 12 to August 18, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest day of the year is July 8, with an average of 7.4 kWh.
The darker period of the year lasts for 3.6 months, from October 28 to February 16, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest day of the year is December 28, with an average of 1.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of San Donnino are 43.795 deg latitude, 11.147 deg longitude, and 118 ft elevation.
The topography within 2 miles of San Donnino contains only modest variations in elevation, with a maximum elevation change of 102 feet and an average elevation above sea level of 115 feet. Within 10 miles contains only modest variations in elevation (3,041 feet). Within 50 miles contains large variations in elevation (7,129 feet).
The area within 2 miles of San Donnino is covered by cropland (52%) and artificial surfaces (43%), within 10 miles by cropland (52%) and trees (27%), and within 50 miles by trees (50%) and cropland (38%).
This report illustrates the typical weather in San Donnino, 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 San Donnino.
For each station, the records are corrected for the elevation difference between that station and San Donnino 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 San Donnino is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Donnino and a given station.
The stations contributing to this reconstruction are: Florence Peretola Airport (97%, 5.0 kilometers, east); Monte Cimone (0.3%, 58 kilometers, northwest); Pisa International Airport (2.2%, 62 kilometers, west); and Grosseto Airport (0.9%, 115 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .