This report describes the typical weather at the Malpensa International Airport (Milan, Italy) weather station over the course of an average year. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Milan has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by croplands (86%), forests (7%), lakes and rivers (4%), and built-up areas (3%).
Over the course of a year, the temperature typically varies from 25°F to 84°F and is rarely below 15°F or above 90°F.
The warm season lasts from June 6 to September 10 with an average daily high temperature above 76°F. The hottest day of the year is July 27, with an average high of 84°F and low of 62°F.
The cold season lasts from November 18 to February 29 with an average daily high temperature below 51°F. The coldest day of the year is January 8, with an average low of 25°F and high of 43°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 8:40 hours of daylight; the longest day is June 20 with 15:42 hours of daylight.
The earliest sunrise is at 5:35am on June 16 and the latest sunset is at 9:19pm on June 25. The latest sunrise is at 8:06am on January 3 and the earliest sunset is at 4:41pm on December 12.
Daylight savings time (DST) is observed in this location during 2012, starting in the spring on March 25 and ending in the fall on October 28.
The median cloud cover ranges from 42% (partly cloudy) to 63% (partly cloudy). The sky is cloudiest on November 28 and clearest on August 14. The clearer part of the year begins around February 8. The cloudier part of the year begins around October 5.
On August 14, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 72% of the time, and overcast or mostly cloudy 17% of the time.
On November 28, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 53% of the time, and clear or mostly clear 34% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around May 24, occurring in 52% of days. Precipitation is least likely around February 21, occurring in 32% of days.
Over the entire year, the most common forms of precipitation are moderate rain, thunderstorms, and light rain.
Moderate rain is the most severe precipitation observed during 38% of those days with precipitation. It is most likely around April 23, when it is observed during 24% of all days.
Thunderstorms are the most severe precipitation observed during 31% of those days with precipitation. They are most likely around July 10, when it is observed during 30% of all days.
Light rain is the most severe precipitation observed during 15% of those days with precipitation. It is most likely around November 13, when it is observed during 8% of all days.
During the warm season, which lasts from June 6 to September 10, there is a 43% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of thunderstorms (64% of days with precipitation have at worst thunderstorms), moderate rain (21%), and light rain (11%).
During the cold season, which lasts from November 18 to February 29, there is a 35% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of moderate rain (42% of days with precipitation have at worst moderate rain), light rain (17%), moderate snow (16%), and drizzle (13%).
The likelihood of snow falling is highest around January 24, occurring in 11% of days. The season in which it is relatively likely for snow to fall spans from November 18 to March 21.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 45% (comfortable) to 95% (very humid) over the course of the year, rarely dropping below 27% (dry) and reaching as high as 100% (very humid).
The air is driest around March 23, at which time the relative humidity drops below 55% (mildly humid) three days out of four; it is most humid around November 1, exceeding 93% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a year, the dew point typically varies from 21°F (dry) to 67°F (muggy) and is rarely below 9°F (dry) or above 74°F (very muggy).
There are two periods in the year that are most comfortable: The first is between April 29 and July 7 and the second is between August 21 and October 24. The air feels neither too dry nor too muggy during these periods.
Over the course of the year typical wind speeds vary from 0 mph to 9 mph (calm to gentle breeze), rarely exceeding 18 mph (fresh breeze).
The highest average wind speed of 4 mph (light breeze) occurs around April 7, at which time the average daily maximum wind speed is 9 mph (gentle breeze).
The lowest average wind speed of 1 mph (light air) occurs around December 18, at which time the average daily maximum wind speed is 4 mph (light breeze).
