This report describes the typical weather at the Metz Nancy Lorraine Airport (Metz, France) weather station over the course of an average year. It is based on the historical records from 1992 to 2012. Earlier records are either unavailable or unreliable.
Metz has a mild humid temperate climate with warm summers and no dry season. The area within 25 mi of this station is covered by croplands (90%), grasslands (6%), and forests (2%).
Over the course of a year, the temperature typically varies from 30°F to 77°F and is rarely below 18°F or above 87°F.
The warm season lasts from May 30 to September 4 with an average daily high temperature above 70°F. The hottest day of the year is July 30, with an average high of 77°F and low of 59°F.
The cold season lasts from November 15 to March 2 with an average daily high temperature below 46°F. The coldest day of the year is December 27, with an average low of 30°F and high of 39°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 8:15 hours of daylight; the longest day is June 20 with 16:13 hours of daylight.
The earliest sunrise is at 5:30am on June 18 and the latest sunset is at 9:44pm on June 23. The latest sunrise is at 8:29am on January 4 and the earliest sunset is at 4:37pm on December 11.
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 is 94% (mostly cloudy) and does not vary substantially over the course of the year.
On August 24, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 11% of the time, and overcast or mostly cloudy 30% of the time.
On December 14, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 55% of the time, and clear or mostly clear 3% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around December 2, occurring in 63% of days. Precipitation is least likely around April 7, occurring in 48% of days.
Over the entire year, the most common forms of precipitation are light rain and moderate rain.
Light rain is the most severe precipitation observed during 52% of those days with precipitation. It is most likely around October 25, when it is observed during 34% of all days.
Moderate rain is the most severe precipitation observed during 19% of those days with precipitation. It is most likely around November 20, when it is observed during 13% of all days.
During the warm season, which lasts from May 30 to September 4, there is a 51% 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 light rain (48% of days with precipitation have at worst light rain), thunderstorms (25%), and moderate rain (18%).
During the cold season, which lasts from November 15 to March 2, there is a 57% 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 light rain (47% of days with precipitation have at worst light rain), light snow (20%), moderate rain (17%), and drizzle (7%).
The likelihood of snow falling is highest around January 15, occurring in 20% of days. The season in which it is relatively likely for snow to fall spans from November 15 to March 29.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 45% (comfortable) to 97% (very humid) over the course of the year, rarely dropping below 30% (comfortable) and reaching as high as 100% (very humid).
The air is driest around July 26, at which time the relative humidity drops below 51% (mildly humid) three days out of four; it is most humid around November 21, exceeding 95% (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 28°F (dry) to 60°F (comfortable) and is rarely below 16°F (dry) or above 65°F (muggy).
The time of the year between May 2 and October 13 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of the year typical wind speeds vary from 2 mph to 17 mph (light air to moderate breeze), rarely exceeding 29 mph (strong breeze).
The highest average wind speed of 12 mph (gentle breeze) occurs around February 22, at which time the average daily maximum wind speed is 17 mph (moderate breeze).
The lowest average wind speed of 8 mph (gentle breeze) occurs around August 1, at which time the average daily maximum wind speed is 14 mph (moderate breeze).