Average Weather at Sandnessjøen Airport, Stokka Norway

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At Sandnessjøen Airport, Stokka, the summers are short, cool, and mostly cloudy; the winters are long, chilly, windy, and overcast; and it is wet year round. Over the course of the year, the temperature typically varies from 28°F to 63°F and is rarely below 17°F or above 74°F.

The warm season lasts for 2.8 months, from June 16 to September 9, with an average daily high temperature above 57°F. The hottest day of the year is August 2, with an average high of 63°F and low of 52°F.

The cold season lasts for 4.4 months, from November 20 to April 3, with an average daily high temperature below 41°F. The coldest day of the year is February 4, with an average low of 28°F and high of 35°F.

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.

At Sandnessjøen Airport, Stokka, 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 Sandnessjøen Airport, Stokka begins around April 14 and lasts for 5.6 months, ending around October 2. On May 28, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 45% of the time, and overcast or mostly cloudy 55% of the time.

The cloudier part of the year begins around October 2 and lasts for 6.4 months, ending around April 14. On January 26, the cloudiest day of the year, the sky is overcast or mostly cloudy 78% of the time, and clear, mostly clear, or partly cloudy 22% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Sandnessjøen Airport, Stokka varies throughout the year.

The wetter season lasts 6.8 months, from August 27 to March 21, with a greater than 45% chance of a given day being a wet day. The chance of a wet day peaks at 57% on December 11.

The drier season lasts 5.2 months, from March 21 to August 27. The smallest chance of a wet day is 33% on May 28.

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 54% on October 3.

Rainfall

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. Sandnessjøen Airport, Stokka experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Sandnessjøen Airport, Stokka. The most rain falls during the 31 days centered around October 10, with an average total accumulation of 5.8 inches.

The least rain falls around May 16, with an average total accumulation of 2.6 inches.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Sandnessjøen Airport, Stokka experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.3 months, from November 8 to April 17, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 29, with an average total liquid-equivalent accumulation of 0.6 inches.

The snowless period of the year lasts for 6.7 months, from April 17 to November 8. The least snow falls around July 18, with an average total liquid-equivalent accumulation of 0.0 inches.

Due to its extreme latitude, Sandnessjøen Airport, Stokka experiences polar day (also known as the midnight Sun) during the summer. 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 the summer at Sandnessjøen Airport, Stokka during 2017, the Sun is continuously above the horizon for 2.4 weeks, rising at 1:10 AM on June 13, and not setting again until 1:03 AM on June 30.

Daylight saving time (DST) is observed at Sandnessjøen Airport, Stokka during 2017, starting in the spring on March 26, lasting 7.1 months, and ending in the fall on October 29.

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 Sandnessjøen Airport, Stokka, 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, remaining a virtually constant 0% throughout.

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 Sandnessjøen Airport, Stokka experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.2 months, from October 8 to April 14, with average wind speeds of more than 5.7 miles per hour. The windiest day of the year is January 23, with an average hourly wind speed of 7.9 miles per hour.

The calmer time of year lasts for 5.8 months, from April 14 to October 8. The calmest day of the year is July 30, with an average hourly wind speed of 3.7 miles per hour.

The predominant average hourly wind direction at Sandnessjøen Airport, Stokka varies throughout the year.

The wind is most often from the north for 2.3 months, from May 24 to August 2, with a peak percentage of 38% on June 15. The wind is most often from the south for 9.7 months, from August 2 to May 24, with a peak percentage of 42% on January 1.

Sandnessjøen Airport, Stokka 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 some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.7 months, from July 4 to September 26, with an average temperature above 52°F. The day of the year with the warmest water is August 12, with an average temperature of 55°F.

The time of year with cooler water lasts for 4.6 months, from December 21 to May 9, with an average temperature below 43°F. The day of the year with the coolest water is March 8, with an average temperature of 40°F.

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 2.8 months, from May 10 to August 5, with an average daily incident shortwave energy per square meter above 4.4 kWh. The brightest day of the year is June 17, with an average of 5.5 kWh.

The darker period of the year lasts for 5.1 months, from October 6 to March 9, with an average daily incident shortwave energy per square meter below 1.1 kWh. The darkest day of the year is December 22, with an average of 0.0 kWh.

For the purposes of this report, the geographical coordinates of Sandnessjøen Airport, Stokka are 65.957 deg latitude, 12.469 deg longitude, and 0 ft elevation.

The topography within 2 miles of Sandnessjøen Airport, Stokka contains very significant variations in elevation, with a maximum elevation change of 984 feet and an average elevation above sea level of 64 feet. Within 10 miles contains very significant variations in elevation (3,484 feet). Within 50 miles also contains extreme variations in elevation (5,650 feet).

The area within 2 miles of Sandnessjøen Airport, Stokka is covered by water (41%), cropland (33%), and trees (20%), within 10 miles by water (49%) and sparse vegetation (15%), and within 50 miles by water (57%) and sparse vegetation (15%).

This report illustrates the typical weather at Sandnessjøen Airport, Stokka, 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

Sandnessjøen Airport, Stokka 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 are Bronnoysund Bronnoy Airport; Mosjøen Airport, Kjærstad; Namsos Lufthavn; Mo i Rana Airport, Røssvoll; and Hemavan Airport.

Other Data

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.