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Average Weather in Hevlín Czechia

In Hevlín, the summers are warm; the winters are very cold, dry, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 26°F to 79°F and is rarely below 13°F or above 90°F.

Based on the tourism score, the best time of year to visit Hevlín for warm-weather activities is from early June to early September.

Climate Summary

very coldcoldcoolcomfortablewarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow64%64%35%35%overcastclearprecipitation: 2.2 inprecipitation: 2.2 in0.7 in0.7 inmuggy: 3%muggy: 3%0%0%drydrytourism score: 7.1tourism score: 7.10.00.0
Click on each chart for more information.

Temperature

The warm season lasts for 3.4 months, from May 28 to September 8, with an average daily high temperature above 70°F. The hottest day of the year is August 4, with an average high of 79°F and low of 60°F.

The cold season lasts for 3.5 months, from November 17 to March 2, with an average daily high temperature below 44°F. The coldest day of the year is January 13, with an average low of 26°F and high of 35°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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.

Average Hourly Temperature

Average Hourly Temperature in HevlínJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolcomfortablewarmfreezingfreezingcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Penticton, Canada (5,168 miles away) and Rainelle, West Virginia, United States (4,603 miles) are the far-away foreign places with temperatures most similar to Hevlín (view comparison).

Clouds

In Hevlín, 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 Hevlín begins around May 8 and lasts for 5.1 months, ending around October 10. On July 17, 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 10 and lasts for 6.9 months, ending around May 8. On November 18, the cloudiest day of the year, the sky is overcast or mostly cloudy 65% of the time, and clear, mostly clear, or partly cloudy 35% of the time.

Cloud Cover Categories

Cloud Cover Categories in HevlínclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1764%Jul 1764%Nov 1835%Nov 1835%May 849%May 849%Oct 1050%Oct 1050%NowNowclearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

The wetter season lasts 4.3 months, from May 1 to September 9, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 32% on June 17.

The drier season lasts 7.7 months, from September 9 to May 1. The smallest chance of a wet day is 14% on January 22.

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 32% on June 17.

Daily Chance of Precipitation

Daily Chance of Precipitation in HevlínwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jun 1732%Jun 1732%Jan 2214%Jan 2214%May 123%May 123%Sep 923%Sep 923%NowNowrainsnow
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Hevlín experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from February 3 to January 17, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 22, with an average total accumulation of 2.2 inches.

The rainless period of the year lasts for 2.4 weeks, from January 17 to February 3. The least rain falls around January 27, with an average total accumulation of 0.5 inches.

Average Monthly Rainfall

Average Monthly Rainfall in HevlínrainJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 inJun 222.2 inJun 222.2 inJan 270.5 inJan 270.5 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall in Hevlín does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in HevlínsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 inJan 60.2 inJan 60.2 inJul 200.0 inJul 200.0 inNov 260.1 inNov 260.1 inMar 40.1 inMar 40.1 inNowNow
The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.

Sun

The length of the day in Hevlín varies extremely over the course of the year. In 2020, the shortest day is December 21, with 8 hours, 16 minutes of daylight; the longest day is June 20, with 16 hours, 10 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 4:50 AM on June 16, and the latest sunrise is 2 hours, 57 minutes later at 7:47 AM on January 1. The earliest sunset is at 3:58 PM on December 11, and the latest sunset is 5 hours, 4 minutes later at 9:01 PM on June 25.

Daylight saving time (DST) is observed in Hevlín during 2020, starting in the spring on March 29, lasting 6.9 months, and ending in the fall on October 25.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in HevlínJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 164:50 AMJun 164:50 AM9:01 PMJun 259:01 PMJun 25Dec 113:58 PMDec 113:58 PM7:47 AMJan 17:47 AMJan 1Mar 29DSTMar 29DSTDSTOct 25DSTOct 25daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2020. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

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 Hevlín, 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 1% of 1% throughout.

Humidity Comfort Levels

Humidity Comfort Levels in HevlínJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Mar 110%Mar 110%Jul 263%Jul 263%NowNowcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

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 Hevlín experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.1 months, from November 22 to April 25, with average wind speeds of more than 9.1 miles per hour. The windiest day of the year is February 3, with an average hourly wind speed of 10.6 miles per hour.

The calmer time of year lasts for 6.9 months, from April 25 to November 22. The calmest day of the year is August 9, with an average hourly wind speed of 7.6 miles per hour.

Average Wind Speed

Average Wind Speed in HevlínwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mph16 mphFeb 310.6 mphFeb 310.6 mphAug 97.6 mphAug 97.6 mphNov 229.1 mphNov 229.1 mphApr 259.1 mphApr 259.1 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Hevlín varies throughout the year.

The wind is most often from the north for 4.9 months, from March 21 to August 18 and for 1.0 weeks, from September 10 to September 17, with a peak percentage of 39% on June 12. The wind is most often from the west for 3.3 weeks, from August 18 to September 10; for 1.6 weeks, from September 17 to September 28; and for 4.5 months, from November 6 to March 21, with a peak percentage of 33% on August 31. The wind is most often from the south for 1.3 months, from September 28 to November 6, with a peak percentage of 32% on October 29.

Wind Direction

Wind Direction in HevlínWNWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestnorthsoutheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is in Hevlín throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Hevlín for general outdoor tourist activities is from early June to early September, with a peak score in the second week of August.

Tourism Score

Tourism Score in Hevlínbest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.17.10.00.0NowNow precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Hevlín for hot-weather activities is from early July to mid August, with a peak score in the first week of August.

Beach/Pool Score

Beach/Pool Score in HevlínJanFebMarAprMayJunJulAugSepOctNovDec02468105.65.60.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Hevlín typically lasts for 6.6 months (201 days), from around April 9 to around October 27, rarely starting before March 21 or after April 26, and rarely ending before October 9 or after November 18.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Hevlíngrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 950%Apr 950%Oct 2750%Oct 2790%Apr 2690%Apr 2690%Oct 990%Oct 910%Mar 2110%Mar 2110%Nov 1810%Nov 180%Dec 270%Dec 27Jul 19100%Jul 19100%NowNowfreezingvery coldcoldcoolcomfortablewarmfrigidhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Hevlín should appear around April 17, only rarely appearing before April 5 or after April 30.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 April 30 to August 16, with an average daily incident shortwave energy per square meter above 5.6 kWh. The brightest day of the year is June 28, with an average of 6.8 kWh.

The darker period of the year lasts for 3.7 months, from October 26 to February 16, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest day of the year is December 25, with an average of 1.0 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in HevlínbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJun 286.8 kWhJun 286.8 kWhDec 251.0 kWhDec 251.0 kWhApr 305.6 kWhApr 305.6 kWhAug 165.6 kWhAug 165.6 kWhOct 262.1 kWhOct 262.1 kWhFeb 162.1 kWhFeb 162.1 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Hevlín are 48.752 deg latitude, 16.381 deg longitude, and 594 ft elevation.

The topography within 2 miles of Hevlín contains only modest variations in elevation, with a maximum elevation change of 105 feet and an average elevation above sea level of 589 feet. Within 10 miles contains only modest variations in elevation (860 feet). Within 50 miles contains very significant variations in elevation (2,037 feet).

The area within 2 miles of Hevlín is covered by cropland (81%), within 10 miles by cropland (84%), and within 50 miles by cropland (60%) and trees (30%).

Data Sources

This report illustrates the typical weather in Hevlín, 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 Hevlín.

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

The stations contributing to this reconstruction are: Namest (20%, 50 kilometers, north); Brno-Tuřany Airport (24%, 50 kilometers, northeast); Fliegerhorst Brumowski (23%, 52 kilometers, southwest); Krems-Langenlois Airport (19%, 59 kilometers, southwest); and Vajnory Airport (15%, 69 kilometers, southeast).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.