Average Weather in Luts’k Ukraine

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In Luts’k, the summers are comfortable and partly cloudy and the winters are long, freezing, dry, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 21°F to 76°F and is rarely below 2°F or above 87°F.

The warm season lasts for 3.8 months, from May 15 to September 10, with an average daily high temperature above 67°F. The hottest day of the year is July 27, with an average high of 76°F and low of 57°F.

The cold season lasts for 3.7 months, from November 19 to March 11, with an average daily high temperature below 40°F. The coldest day of the year is February 2, with an average low of 21°F and high of 31°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 Luts’k, 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 Luts’k begins around April 21 and lasts for 5.8 months, ending around October 15. On August 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 64% of the time, and overcast or mostly cloudy 36% of the time.

The cloudier part of the year begins around October 15 and lasts for 6.2 months, ending around April 21. On November 28, the cloudiest day of the year, the sky is overcast or mostly cloudy 72% of the time, and clear, mostly clear, or partly cloudy 28% 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 Luts’k varies throughout the year.

The wetter season lasts 2.9 months, from May 10 to August 8, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 36% on June 12.

The drier season lasts 9.1 months, from August 8 to May 10. The smallest chance of a wet day is 15% on January 23.

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 36% on June 12.

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. Luts’k experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 10 months, from March 2 to January 2, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 9, with an average total accumulation of 2.8 inches.

The rainless period of the year lasts for 2.0 months, from January 2 to March 2. The least rain falls around January 30, with an average total accumulation of 0.4 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. Luts’k experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 4.9 months, from November 1 to March 30, 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 30, with an average total liquid-equivalent accumulation of 0.3 inches.

The snowless period of the year lasts for 7.0 months, from March 30 to November 1. The least snow falls around July 15, with an average total liquid-equivalent accumulation of 0.0 inches.

The length of the day in Luts’k varies extremely over the course of the year. In 2017, the shortest day is December 21, with 7 hours, 57 minutes of daylight; the longest day is June 21, with 16 hours, 30 minutes of daylight.

The earliest sunrise is at 5:04 AM on June 16, and the latest sunrise is 3 hours, 16 minutes later at 8:20 AM on December 31. The earliest sunset is at 4:13 PM on December 12, and the latest sunset is 5 hours, 23 minutes later at 9:35 PM on June 25.

Daylight saving time (DST) is observed in Luts’k 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 Luts’k, 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 4% of 4% 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 in Luts’k experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.0 months, from October 11 to April 12, with average wind speeds of more than 5.4 miles per hour. The windiest day of the year is January 25, with an average hourly wind speed of 6.5 miles per hour.

The calmer time of year lasts for 6.0 months, from April 12 to October 11. The calmest day of the year is July 28, with an average hourly wind speed of 4.3 miles per hour.

The predominant average hourly wind direction in Luts’k varies throughout the year.

The wind is most often from the south for 1.0 months, from April 16 to May 16, with a peak percentage of 28% on May 7. The wind is most often from the north for 2.7 weeks, from May 16 to June 4, with a peak percentage of 29% on June 3. The wind is most often from the west for 10 months, from June 4 to April 16, with a peak percentage of 48% on January 1.

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 3.6 months, from May 1 to August 21, with an average daily incident shortwave energy per square meter above 5.3 kWh. The brightest day of the year is July 2, with an average of 6.4 kWh.

The darker period of the year lasts for 3.7 months, from October 26 to February 18, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest day of the year is December 22, with an average of 0.7 kWh.

For the purposes of this report, the geographical coordinates of Luts’k are 50.759 deg latitude, 25.342 deg longitude, and 620 ft elevation.

The topography within 2 miles of Luts’k contains only modest variations in elevation, with a maximum elevation change of 144 feet and an average elevation above sea level of 615 feet. Within 10 miles also contains only modest variations in elevation (325 feet). Within 50 miles contains only modest variations in elevation (935 feet).

The area within 2 miles of Luts’k is covered by artificial surfaces (57%), cropland (24%), and trees (10%), within 10 miles by cropland (63%) and trees (20%), and within 50 miles by cropland (58%) and trees (30%).

This report illustrates the typical weather in Luts’k, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Luts’k.

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

The stations contributing to this reconstruction are: Rivne International Airport (79%, 59 kilometers, east) and Lviv International Airport (21%, 144 kilometers, southwest).

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.