Average Weather at Frontone Italy
At Frontone, the summers are short, warm, and mostly clear and the winters are long, very cold, and partly cloudy. Over the course of the year, the temperature typically varies from 36°F to 85°F and is rarely below 28°F or above 94°F.
Based on the beach/pool score, the best time of year to visit Frontone for hot-weather activities is from early July to mid August.
The warm season lasts for 2.8 months, from June 13 to September 6, with an average daily high temperature above 77°F. The hottest day of the year is July 30, with an average high of 85°F and low of 68°F.
The cool season lasts for 4.0 months, from November 16 to March 16, with an average daily high temperature below 54°F. The coldest day of the year is February 5, with an average low of 36°F and high of 46°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
At Frontone, 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 at Frontone begins around June 5 and lasts for 3.6 months, ending around September 23. On July 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 84% of the time, and overcast or mostly cloudy 16% of the time.
The cloudier part of the year begins around September 23 and lasts for 8.4 months, ending around June 5. On December 6, 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
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. The chance of wet days at Frontone varies throughout the year.
The wetter season lasts 9.6 months, from September 1 to June 18, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 32% on November 16.
The drier season lasts 2.4 months, from June 18 to September 1. The smallest chance of a wet day is 14% 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 31% on November 16.
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. Frontone experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year at Frontone. The most rain falls during the 31 days centered around November 15, with an average total accumulation of 3.1 inches.
The least rain falls around July 23, with an average total accumulation of 1.1 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall at Frontone does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day at Frontone varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 57 minutes of daylight; the longest day is June 21, with 15 hours, 26 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:27 AM on June 15, and the latest sunrise is 2 hours, 15 minutes later at 7:42 AM on January 3. The earliest sunset is at 4:32 PM on December 10, and the latest sunset is 4 hours, 22 minutes later at 8:54 PM on June 27.
Daylight saving time (DST) is observed at Frontone 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
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
The perceived humidity level at Frontone, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 3% of 3% throughout.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Frontone experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.2 months, from October 18 to April 25, with average wind speeds of more than 8.1 miles per hour. The windiest day of the year is February 3, with an average hourly wind speed of 9.5 miles per hour.
The calmer time of year lasts for 5.8 months, from April 25 to October 18. The calmest day of the year is August 11, with an average hourly wind speed of 6.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction at Frontone varies throughout the year.
The wind is most often from the east for 1.9 weeks, from February 25 to March 10; for 1.1 weeks, from September 10 to September 18; for 1.0 months, from September 27 to October 28; and for 3.0 days, from November 17 to November 20, with a peak percentage of 30% on March 2. The wind is most often from the west for 6.0 months, from March 10 to September 10 and for 1.3 weeks, from September 18 to September 27, with a peak percentage of 38% on June 12. The wind is most often from the north for 3.2 months, from November 20 to February 25, with a peak percentage of 29% on January 1.
Frontone 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 2.8 months, from June 23 to September 17, with an average temperature above 73°F. The day of the year with the warmest water is August 7, with an average temperature of 78°F.
The time of year with cooler water lasts for 4.1 months, from December 19 to April 22, with an average temperature below 57°F. The day of the year with the coolest water is March 2, with an average temperature of 52°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is at Frontone 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 time of year to visit Frontone for general outdoor tourist activities is from late May to late September, with a peak score in the second week of July.
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 Frontone for hot-weather activities is from early July to mid August, with a peak score in the third 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.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
The growing season at Frontone typically lasts for 8.9 months (272 days), from around March 13 to around December 10, rarely starting before February 9 or after April 11, and rarely ending before November 10 or after January 2.
Time Spent in Various Temperature Bands and the Growing Season
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Based on growing degree days alone, the first spring blooms at Frontone should appear around March 31, only rarely appearing before March 15 or after April 16.
Growing Degree Days
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
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 6.3 kWh. The brightest day of the year is July 8, with an average of 7.5 kWh.
The darker period of the year lasts for 3.6 months, from October 29 to February 15, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest day of the year is December 26, with an average of 1.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Frontone are 43.517 deg latitude, 12.733 deg longitude, and 1,503 ft elevation.
The topography within 2 miles of Frontone contains very significant variations in elevation, with a maximum elevation change of 1,811 feet and an average elevation above sea level of 1,539 feet. Within 10 miles contains very significant variations in elevation (5,072 feet). Within 50 miles also contains extreme variations in elevation (7,648 feet).
The area within 2 miles of Frontone is covered by cropland (55%) and trees (37%), within 10 miles by trees (51%) and cropland (41%), and within 50 miles by cropland (45%) and trees (29%).
This report illustrates the typical weather at Frontone, 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
Frontone has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back include but are not limited to Perugia San Francesco d'Assisi – Umbria International Airport, Federico Fellini International Airport, Ancona Falconara Airport, Aeroporto di Cervia-Pisignano, Arezzo Airfield, Forlì Airport, Monte Terminillo, and Viterbo.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.