Average Weather in Cosio Valtellino Italy
In Cosio Valtellino, the summers are comfortable and wet, the winters are very cold, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 29°F to 76°F and is rarely below 22°F or above 82°F.
Based on the tourism score, the best time of year to visit Cosio Valtellino for warm-weather activities is from late June to early September.
The warm season lasts for 3.1 months, from June 6 to September 10, with an average daily high temperature above 69°F. The hottest day of the year is July 26, with an average high of 76°F and low of 61°F.
The cold season lasts for 3.7 months, from November 19 to March 8, with an average daily high temperature below 47°F. The coldest day of the year is January 12, with an average low of 29°F and high of 40°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
Coquitlam, Canada (5,256 miles away); Boone, North Carolina, United States (4,534 miles); and Edgartown, Massachusetts, United States (3,839 miles) are the far-away foreign places with temperatures most similar to Cosio Valtellino (view comparison).
In Cosio Valtellino, 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 Cosio Valtellino begins around June 19 and lasts for 3.0 months, ending around September 18. On July 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
The cloudier part of the year begins around September 18 and lasts for 9.0 months, ending around June 19. On May 8, the cloudiest day of the year, the sky is overcast or mostly cloudy 60% of the time, and clear, mostly clear, or partly cloudy 40% 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 Cosio Valtellino varies throughout the year.
The wetter season lasts 6.2 months, from April 6 to October 11, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 42% on June 2.
The drier season lasts 5.8 months, from October 11 to April 6. The smallest chance of a wet day is 16% on February 8.
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 42% on June 2.
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. Cosio Valtellino experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Cosio Valtellino. The most rain falls during the 31 days centered around May 23, with an average total accumulation of 4.6 inches.
The least rain falls around February 2, with an average total accumulation of 1.4 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall in Cosio Valtellino 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 in Cosio Valtellino varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 37 minutes of daylight; the longest day is June 21, with 15 hours, 46 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:29 AM on June 16, and the latest sunrise is 2 hours, 34 minutes later at 8:04 AM on January 1. The earliest sunset is at 4:35 PM on December 11, and the latest sunset is 4 hours, 41 minutes later at 9:17 PM on June 26.
Daylight saving time (DST) is observed in Cosio Valtellino 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
The perceived humidity level in Cosio Valtellino, 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 1% of 1% throughout.
Humidity Comfort Levels
Average Wind Speed
The predominant average hourly wind direction in Cosio Valtellino varies throughout the year.
The wind is most often from the south for 5.5 months, from April 21 to October 7, with a peak percentage of 45% on May 25. The wind is most often from the north for 6.5 months, from October 7 to April 21, with a peak percentage of 70% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Cosio Valtellino 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 Cosio Valtellino for general outdoor tourist activities is from late June to early September, with a peak score in the last 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 Cosio Valtellino for hot-weather activities is from early July to mid August, with a peak score in the last 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 Cosio Valtellino typically lasts for 7.6 months (234 days), from around March 28 to around November 17, rarely starting before March 4 or after April 21, and rarely ending before October 28 or after December 10.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Cosio Valtellino should appear around April 28, only rarely appearing before April 16 or after May 16.
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 3.3 months, from May 10 to August 19, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is July 5, with an average of 6.9 kWh.
The darker period of the year lasts for 3.4 months, from October 27 to February 8, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest day of the year is December 16, with an average of 1.5 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Cosio Valtellino are 46.135 deg latitude, 9.552 deg longitude, and 2,218 ft elevation.
The topography within 2 miles of Cosio Valtellino contains extreme variations in elevation, with a maximum elevation change of 3,799 feet and an average elevation above sea level of 1,591 feet. Within 10 miles also contains extreme variations in elevation (9,114 feet). Within 50 miles also contains extreme variations in elevation (12,867 feet).
The area within 2 miles of Cosio Valtellino is covered by trees (52%), cropland (25%), and artificial surfaces (14%), within 10 miles by trees (58%) and grassland (16%), and within 50 miles by trees (41%) and grassland (16%).
This report illustrates the typical weather in Cosio Valtellino, 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 6 weather stations near enough to contribute to our estimation of the temperature and dew point in Cosio Valtellino.
For each station, the records are corrected for the elevation difference between that station and Cosio Valtellino 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 Cosio Valtellino is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Cosio Valtellino and a given station.
The stations contributing to this reconstruction are: Monte Bisbino (18%, 48 kilometers, southwest); Lugano Airport (25%, 52 kilometers, west); Locarno Airport (22%, 52 kilometers, west); Il Caravaggio International Airport (23%, 53 kilometers, south); Resia Pass (7%, 106 kilometers, northeast); and Paganella (meteorological station) (5%, 114 kilometers, east).
Time zones for aiports and weather stations are provided by AskGeo.com .