Average Weather in Větřní Czechia
In Větřní, the summers are comfortable, the winters are freezing and dry, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 22°F to 73°F and is rarely below 8°F or above 84°F.
Based on the tourism score, the best time of year to visit Větřní for warm-weather activities is from late June to late August.
The warm season lasts for 3.5 months, from May 25 to September 10, with an average daily high temperature above 64°F. The hottest day of the year is August 5, with an average high of 73°F and low of 54°F.
The cold season lasts for 3.5 months, from November 18 to March 3, with an average daily high temperature below 39°F. The coldest day of the year is January 21, with an average low of 22°F and high of 31°F.
Average High and Low Temperature
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
In Větřní, 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 Větřní begins around May 16 and lasts for 4.4 months, ending around September 27. On July 18, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 60% of the time, and overcast or mostly cloudy 40% of the time.
The cloudier part of the year begins around September 27 and lasts for 7.6 months, ending around May 16. On November 16, the cloudiest day of the year, the sky is overcast or mostly cloudy 66% of the time, and clear, mostly clear, or partly cloudy 34% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Větřní varies throughout the year.
The wetter season lasts 4.0 months, from May 7 to September 5, with a greater than 28% chance of a given day being a wet day. The chance of a wet day peaks at 40% on June 13.
The drier season lasts 8.0 months, from September 5 to May 7. The smallest chance of a wet day is 17% on January 5.
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 Větřní changes throughout the year.
Rain alone is the most common for 11 months, from February 7 to January 2. The highest chance of a day with rain alone is 40% on June 13.
Snow alone is the most common for 1.2 months, from January 2 to February 7. The highest chance of a day with snow alone is 9% on January 13.
Daily Chance of Precipitation
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. Větřní experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 11 months, from February 16 to January 27, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 19, with an average total accumulation of 3.3 inches.
The rainless period of the year lasts for 2.9 weeks, from January 27 to February 16. The least rain falls around February 5, with an average total accumulation of 0.5 inches.
Average Monthly Rainfall
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. Větřní experiences some seasonal variation in monthly liquid-equivalent snowfall.
The snowy period of the year lasts for 5.4 months, from November 2 to April 15, 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 0.5 inches.
The snowless period of the year lasts for 6.6 months, from April 15 to November 2. The least snow falls around July 22, with an average total liquid-equivalent accumulation of 0.0 inches.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Větřní varies extremely over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 16 minutes of daylight; the longest day is June 21, with 16 hours, 10 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 4:59 AM on June 16, and the latest sunrise is 2 hours, 57 minutes later at 7:55 AM on January 2. The earliest sunset is at 4:06 PM on December 11, and the latest sunset is 5 hours, 4 minutes later at 9:10 PM on June 26.
Daylight saving time (DST) is observed in Větřní during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
The perceived humidity level in Větřní, 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
The average hourly wind speed in Větřní experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 4.5 months, from November 25 to April 11, with average wind speeds of more than 7.9 miles per hour. The windiest day of the year is January 29, with an average hourly wind speed of 9.5 miles per hour.
The calmer time of year lasts for 7.5 months, from April 11 to November 25. The calmest day of the year is August 10, with an average hourly wind speed of 6.3 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Větřní varies throughout the year.
The wind is most often from the east for 1.4 weeks, from April 27 to May 7, with a peak percentage of 33% on May 5. The wind is most often from the west for 12 months, from May 7 to April 27, with a peak percentage of 51% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Větřní 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 Větřní for general outdoor tourist activities is from late June to late August, with a peak score in the first week of August.
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 Větřní for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.
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.
The growing season in Větřní typically lasts for 5.7 months (175 days), from around April 22 to around October 13, rarely starting before April 4 or after May 12, and rarely ending before September 25 or after October 31.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Větřní should appear around May 4, only rarely appearing before April 22 or after May 17.
Growing Degree Days
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 29 to August 18, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is June 29, with an average of 6.6 kWh.
The darker period of the year lasts for 3.5 months, from October 29 to February 14, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest day of the year is December 26, with an average of 1.0 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Větřní are 48.774 deg latitude, 14.286 deg longitude, and 2,083 ft elevation.
The topography within 2 miles of Větřní contains very significant variations in elevation, with a maximum elevation change of 1,086 feet and an average elevation above sea level of 2,123 feet. Within 10 miles contains very significant variations in elevation (2,195 feet). Within 50 miles contains large variations in elevation (3,996 feet).
The area within 2 miles of Větřní is covered by trees (61%), cropland (18%), and grassland (17%), within 10 miles by trees (49%) and grassland (26%), and within 50 miles by trees (42%) and cropland (40%).
This report illustrates the typical weather in Větřní, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Větřní.
For each station, the records are corrected for the elevation difference between that station and Větřní 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 Větřní is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Větřní and a given station.
The stations contributing to this reconstruction are: Linz Airport (47%, 61 kilometers, south); Krems-Langenlois Airport (21%, 110 kilometers, east); Mariánské Lázně Airport (19%, 124 kilometers, northwest); and Caslav (14%, 152 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .