This report describes the typical weather at the Qaanaaq Airport (Qaanaaq, Greenland) weather station over the course of an average year. It is based on the historical records from 2006 to 2012. Earlier records are either unavailable or unreliable.
Qaanaaq has a polar tundra climate. The area within 25 mi of this station is covered by oceans and seas (87%), tundra (6%), and shrublands (6%).
Over the course of a year, the temperature typically varies from -19Â°F to 52Â°F and is rarely below -28Â°F or above 57Â°F.
The warm season lasts from June 7 to September 9 with an average daily high temperature above 41Â°F. The hottest day of the year is July 21, with an average high of 52Â°F and low of 43Â°F.
The cold season lasts from December 4 to April 4 with an average daily high temperature below 8Â°F. The coldest day of the year is March 6, with an average low of -19Â°F and high of -3Â°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 0:00 hours of daylight; the longest day is June 20 with 24:00 hours of daylight.
Due to its extreme latitude, Qaanaaq experiences polar day (also known as the midnight Sun) during summer and polar night during winter. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.
In summer, the Sun is continuously above the horizon for 121 days, from April 21 to August 20.
In winter, the Sun is continuously below the horizon for 108 days, from October 28 to February 13.
Daylight saving time (DST) is observed in this location during 2012, starting in the spring on March 11 and ending in the fall on November 4.
The median cloud cover ranges from 9% (clear) to 23% (mostly clear). The sky is cloudiest on June 29 and clearest on March 28. The clearer part of the year begins around November 24. The cloudier part of the year begins around May 11.
On March 28, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 40% of the time, and overcast or mostly cloudy 6% of the time.
On June 29, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 17% of the time, and clear or mostly clear 30% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around October 25, occurring in 33% of days. Precipitation is least likely around February 24, occurring in 15% of days.
Over the entire year, the most common forms of precipitation are light snow, moderate snow, and light rain.
Light snow is the most severe precipitation observed during 37% of those days with precipitation. It is most likely around November 1, when it is observed during 18% of all days.
Moderate snow is the most severe precipitation observed during 36% of those days with precipitation. It is most likely around November 20, when it is observed during 15% of all days.
Light rain is the most severe precipitation observed during 18% of those days with precipitation. It is most likely around August 5, when it is observed during 18% of all days.
During the warm season, which lasts from June 7 to September 9, there is a 23% 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 (56% of days with precipitation have at worst light rain), moderate rain (16%), moderate snow (13%), and light snow (11%).
During the cold season, which lasts from December 4 to April 4, there is a 19% 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 snow (53% of days with precipitation have at worst moderate snow) and light snow (46%).
The likelihood of snow falling is highest around October 30, occurring in 33% of days. The season in which it is relatively likely for snow to fall spans from September 8 to June 22.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 44% (comfortable) to 94% (very humid) over the course of the year, rarely dropping below 34% (comfortable) and reaching as high as 100% (very humid).
The air is driest around September 16, at which time the relative humidity drops below 47% (comfortable) three days out of four; it is most humid around August 3, exceeding 91% (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 -29Â°F (dry) to 43Â°F (dry) and is rarely below -38Â°F (dry) or above 46Â°F (dry).
Over the course of the year typical wind speeds vary from 0 mph to 17 mph (calm to moderate breeze), rarely exceeding 31 mph (strong breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around October 13, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 3 mph (light air) occurs around March 4, at which time the average daily maximum wind speed is 6 mph (light breeze).