Average Weather in Šoštanj Slovenia

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In Šoštanj, the summers are comfortable and wet, the winters are freezing, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 22°F to 78°F and is rarely below 11°F or above 87°F.

The warm season lasts for 3.5 months, from May 26 to September 11, with an average daily high temperature above 69°F. The hottest day of the year is August 3, with an average high of 78°F and low of 57°F.

The cold season lasts for 3.3 months, from November 20 to February 28, with an average daily high temperature below 43°F. The coldest day of the year is January 13, with an average low of 22°F and high of 34°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.

In Šoštanj, 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 Šoštanj begins around June 5 and lasts for 3.7 months, ending around September 27. On July 22, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.

The cloudier part of the year begins around September 27 and lasts for 8.3 months, ending around June 5. On November 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 64% of the time, and clear, mostly clear, or partly cloudy 36% 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 in Šoštanj varies throughout the year.

The wetter season lasts 5.6 months, from April 6 to September 25, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 40% on June 12.

The drier season lasts 6.4 months, from September 25 to April 6. The smallest chance of a wet day is 14% on January 21.

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 in Šoštanj changes throughout the year.

Rain alone is the most common for 12 months, from January 22 to January 14. The highest chance of a day with rain alone is 40% on June 12.

Snow alone is the most common for 1.1 weeks, from January 14 to January 22. The highest chance of a day with snow alone is 7% on January 1.

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. Šoštanj experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Šoštanj. The most rain falls during the 31 days centered around September 14, with an average total accumulation of 3.8 inches.

The least rain falls around January 18, with an average total accumulation of 0.7 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. Šoštanj experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.1 months, from October 28 to April 2, 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 6, with an average total liquid-equivalent accumulation of 0.6 inches.

The snowless period of the year lasts for 6.8 months, from April 2 to October 28. The least snow falls around July 29, with an average total liquid-equivalent accumulation of 0.0 inches.

The length of the day in Šoštanj varies significantly over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 35 minutes of daylight; the longest day is June 21, with 15 hours, 48 minutes of daylight.

The earliest sunrise is at 5:06 AM on June 15, and the latest sunrise is 2 hours, 36 minutes later at 7:43 AM on January 1. The earliest sunset is at 4:12 PM on December 11, and the latest sunset is 4 hours, 43 minutes later at 8:56 PM on June 25.

Daylight saving time (DST) is observed in Šoštanj 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 in Šoštanj, 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 2% of 2% 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 predominant average hourly wind direction in Šoštanj varies throughout the year.

The wind is most often from the north for 6.0 days, from February 22 to February 28; for 3.0 weeks, from April 3 to April 24; for 4.0 days, from May 30 to June 3; and for 3.2 months, from June 12 to September 19, with a peak percentage of 32% on July 21. The wind is most often from the west for 1.2 months, from February 28 to April 3; for 4.1 weeks, from April 24 to May 23; and for 5.1 months, from September 19 to February 22, with a peak percentage of 32% on March 13. The wind is most often from the south for 1.0 weeks, from May 23 to May 30 and for 1.3 weeks, from June 3 to June 12, with a peak percentage of 27% on June 10.

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 3.5 months, from May 3 to August 19, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is July 9, with an average of 6.6 kWh.

The darker period of the year lasts for 3.4 months, from October 28 to February 12, with an average daily incident shortwave energy per square meter below 2.3 kWh. The darkest day of the year is December 14, with an average of 1.2 kWh.

For the purposes of this report, the geographical coordinates of Šoštanj are 46.380 deg latitude, 15.049 deg longitude, and 1,453 ft elevation.

The topography within 2 miles of Šoštanj contains very significant variations in elevation, with a maximum elevation change of 1,138 feet and an average elevation above sea level of 1,357 feet. Within 10 miles contains very significant variations in elevation (4,678 feet). Within 50 miles also contains extreme variations in elevation (7,920 feet).

The area within 2 miles of Šoštanj is covered by trees (40%), cropland (36%), and artificial surfaces (12%), within 10 miles by trees (61%) and cropland (23%), and within 50 miles by trees (57%) and cropland (28%).

This report illustrates the typical weather in Šoštanj, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Šoštanj.

For each station, the records are corrected for the elevation difference between that station and Šoštanj 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 Šoštanj is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Šoštanj and a given station.

The stations contributing to this reconstruction are: Ljubljana Jože Pučnik Airport (27%, 49 kilometers, west); Maribor Edvard Rusjan Airport (24%, 50 kilometers, east); Klagenfurt Airport (19%, 63 kilometers, northwest); Cerklje ob Krki Airport (16%, 65 kilometers, southeast); and Graz Airport (14%, 74 kilometers, northeast).

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.