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April Weather in Opočno Czechia

Daily high temperatures increase by 10°F, from 51°F to 61°F, rarely falling below 40°F or exceeding 72°F.

Daily low temperatures increase by 7°F, from 35°F to 42°F, rarely falling below 27°F or exceeding 50°F.

For reference, on August 4, the hottest day of the year, temperatures in Opočno typically range from 56°F to 75°F, while on January 20, the coldest day of the year, they range from 25°F to 34°F.

Average High and Low Temperature in April in Opočno

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 hourly average temperatures for the quarter of the year centered on April. The horizontal axis is the day, 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 April in Opočno

Average Hourly Temperature in April in OpočnoApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMMarMayNowNowvery coldcoldcoolfreezingcoolcomfortable
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.

Kitimat, Canada (4,951 miles away); Nakusp, Canada (4,985 miles); and Banner Elk, North Carolina, United States (4,671 miles) are the far-away foreign places with temperatures most similar to Opočno (view comparison).

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The month of April in Opočno experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 57% to 51%.

The clearest day of the month is April 29, with clear, mostly clear, or partly cloudy conditions 49% of the time.

For reference, on November 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on July 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.

Cloud Cover Categories in April in Opočno

Cloud Cover Categories in April in OpočnoApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMayApr 143%Apr 143%Apr 3049%Apr 3049%Apr 1146%Apr 1146%Apr 2148%Apr 2148%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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Opočno, the chance of a wet day over the course of April is gradually increasing, starting the month at 22% and ending it at 24%.

For reference, the year's highest daily chance of a wet day is 35% on July 5, and its lowest chance is 19% on October 20.

Over the course of April in Opočno, the chance of a day with only rain increases from 19% to 24%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.

Probability of Precipitation in April in Opočno

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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during April in Opočno is gradually increasing, starting the month at 1.1 inches, when it rarely exceeds 1.9 inches or falls below 0.4 inches, and ending the month at 1.5 inches, when it rarely exceeds 2.5 inches or falls below 0.6 inches.

Average Monthly Rainfall in April in Opočno

Average Monthly Rainfall in April in OpočnoApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 in3.0 in3.0 in3.5 in3.5 in4.0 in4.0 inMarMayApr 11.1 inApr 11.1 inApr 301.5 inApr 301.5 inApr 111.2 inApr 111.2 inApr 211.3 inApr 211.3 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 snowfall.

Over the course of April in Opočno, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 45 minutes, implying an average daily increase of 3 minutes, 37 seconds, and weekly increase of 25 minutes, 18 seconds.

The shortest day of the month is April 1, with 12 hours, 57 minutes of daylight and the longest day is April 30, with 14 hours, 42 minutes of daylight.

Hours of Daylight and Twilight in April in Opočno

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 latest sunrise of the month in Opočno is 6:31 AM on April 1 and the earliest sunrise is 59 minutes earlier at 5:32 AM on April 30.

The earliest sunset is 7:28 PM on April 1 and the latest sunset is 46 minutes later at 8:14 PM on April 30.

Daylight saving time is observed in Opočno during 2024, but it neither starts nor ends during April, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 4:44 AM and sets 16 hours, 25 minutes later, at 9:09 PM, while on December 21, the shortest day of the year, it rises at 7:52 AM and sets 8 hours, 2 minutes later, at 3:54 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in April in Opočno

Sunrise & Sunset with Twilight and Daylight Saving Time in April in OpočnoApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMarMay5:32 AM5:32 AMApr 308:14 PMApr 308:14 PM6:31 AM6:31 AMApr 17:28 PMApr 17:28 PM6:09 AM6:09 AMApr 117:44 PMApr 117:44 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of April. 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 figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in April in Opočno

Solar Elevation and Azimuth in April in OpočnoApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMMarMay01010202020304050000102020303030405060NowNow
northeastsouthwest
Solar elevation and azimuth over the course of April 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for April 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in April in Opočno

Moon Rise, Set & Phases in April in OpočnoApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMMarMayMar 1010:01 AMMar 1010:01 AMMar 258:01 AMMar 258:01 AMApr 88:22 PMApr 88:22 PMApr 241:50 AMApr 241:50 AMMay 85:23 AMMay 85:23 AMMay 233:54 PMMay 233:54 PM6:35 AM6:35 AM6:09 PM6:09 PM5:29 PM5:29 PM5:56 AM5:56 AM6:09 AM6:09 AM7:32 PM7:32 PM7:46 PM7:46 PM5:40 AM5:40 AM5:05 AM5:05 AM9:28 PM9:28 PM9:18 PM9:18 PM4:52 AM4:52 AMNowNow
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Apr 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
60%2:50 AMSE9:40 AMSW-6:15 AMS238,668 mi
2
50%3:46 AMSE10:45 AMSW-7:16 AMS235,347 mi
3
38%4:28 AMSE12:05 PMSW-8:17 AMS231,955 mi
4
27%4:59 AMSE1:33 PMWSW-9:15 AMS228,737 mi
5
16%5:21 AMESE3:03 PMWSW-10:11 AMS225,986 mi
6
8%5:39 AMESE4:33 PMWSW-11:04 AMS224,002 mi
7
3%5:54 AME6:02 PMW-11:55 AMS223,041 mi
8
0%6:09 AME7:32 PMWNW-12:46 PMS223,263 mi
9
1%6:24 AMENE9:02 PMWNW-1:37 PMS224,692 mi
10
5%6:42 AMENE10:33 PMWNW-2:30 PMS227,205 mi
11
11%7:05 AMNE--3:25 PMS230,554 mi
12
19%-12:00 AMNW7:36 AMNE4:22 PMS234,407 mi
13
29%-1:20 AMNW8:18 AMNE5:20 PMS238,406 mi
14
39%-2:24 AMNW9:14 AMNE6:16 PMS242,219 mi
15
50%-3:13 AMNW10:20 AMNE7:09 PMS245,579 mi
16
59%-3:47 AMNW11:33 AMNE7:59 PMS248,304 mi
17
69%-4:11 AMNW12:47 PMENE8:44 PMS250,293 mi
18
77%-4:28 AMWNW1:59 PMENE9:26 PMS251,522 mi
19
85%-4:42 AMWNW3:09 PMENE10:06 PMS252,023 mi
20
91%-4:54 AMW4:17 PME10:44 PMS251,870 mi
21
96%-5:05 AMW5:26 PME11:23 PMS251,160 mi
22
98%-5:16 AMW6:35 PMESE--
23
99%-5:27 AMWSW7:46 PMESE12:02 AMS250,000 mi
24
100%-5:40 AMWSW9:00 PMESE12:44 AMS248,487 mi
25
99%-5:57 AMWSW10:16 PMSE1:29 AMS246,705 mi
26
96%-6:20 AMSW11:32 PMSE2:18 AMS244,712 mi
27
91%-6:51 AMSW-3:12 AMS242,547 mi
28
84%12:43 AMSE7:36 AMSW-4:09 AMS240,235 mi
29
75%1:43 AMSE8:36 AMSW-5:10 AMS237,803 mi
30
65%2:28 AMSE9:51 AMSW-6:10 AMS235,292 mi

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 chance that a given day will be muggy in Opočno is essentially constant during April, remaining around 0% throughout.

For reference, on July 23, the muggiest day of the year, there are muggy conditions 2% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in April in Opočno

Humidity Comfort Levels in April in OpočnoApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%MarMayApr 10%Apr 10%Apr 300%Apr 300%Apr 110%Apr 110%Apr 210%Apr 210%drydrycomfortablecomfortable
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.

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 Opočno is decreasing during April, decreasing from 9.9 miles per hour to 8.8 miles per hour over the course of the month.

For reference, on January 27, the windiest day of the year, the daily average wind speed is 11.5 miles per hour, while on August 6, the calmest day of the year, the daily average wind speed is 7.5 miles per hour.

Average Wind Speed in April in Opočno

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Opočno during April is predominantly out of the west from April 1 to April 16, the north from April 16 to April 28, and the south from April 28 to April 30.

Wind Direction in April in Opočno

Wind Direction in April in OpočnoWNSWApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%MarMayNowNowwestsoutheastnorth
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).

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 Opočno typically lasts for 6.0 months (184 days), from around April 18 to around October 19, rarely starting before April 1 or after May 8, and rarely ending before October 3 or after November 7.

During April in Opočno, the chance that a given day is within the growing season is very rapidly increasing rising from 11% to 79% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in April in Opočno

Time Spent in Various Temperature Bands and the Growing Season in April in Opočnogrowing seasonApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMayApr 111%Apr 111%79%Apr 3079%Apr 30Apr 1132%Apr 1132%58%Apr 2158%Apr 2190%May 890%May 8NowNowfreezingvery coldcoldcoolcomfortable
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.

The average accumulated growing degree days in Opočno are gradually increasing during April, increasing by 84°F, from 20°F to 104°F, over the course of the month.

Growing Degree Days in April in Opočno

Growing Degree Days in April in OpočnoApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303020°F20°F40°F40°F60°F60°F80°F80°F100°F100°F120°F120°F140°F140°F160°F160°FMarMayApr 120°FApr 120°FApr 30104°FApr 30104°FApr 1136°FApr 1136°FApr 2165°FApr 2165°FNowNow
The average growing degree days accumulated over the course of April, with 25th to 75th and 10th to 90th percentile bands.

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 in Opočno is increasing during April, rising by 1.5 kWh, from 3.9 kWh to 5.4 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in April in Opočno

Average Daily Incident Shortwave Solar Energy in April in OpočnoApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhMarMayApr 13.9 kWhApr 13.9 kWhApr 305.4 kWhApr 305.4 kWhApr 114.5 kWhApr 114.5 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.

For the purposes of this report, the geographical coordinates of Opočno are 50.267 deg latitude, 16.115 deg longitude, and 1,010 ft elevation.

The topography within 2 miles of Opočno contains only modest variations in elevation, with a maximum elevation change of 397 feet and an average elevation above sea level of 949 feet. Within 10 miles contains only modest variations in elevation (1,995 feet). Within 50 miles contains large variations in elevation (4,711 feet).

The area within 2 miles of Opočno is covered by cropland (74%) and trees (17%), within 10 miles by cropland (60%) and trees (26%), and within 50 miles by cropland (50%) and trees (35%).

This report illustrates the typical weather in Opočno, 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 Opočno.

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

The stations contributing to this reconstruction are:

  • Pardubice Airport (LKPD, 60%, 24 mi, southwest, -272 ft elevation change)
  • Liberec (LKLB, 16%, 59 mi, northwest, 295 ft elevation change)
  • Wroclaw / Strachowice (EPWL, 13%, 67 mi, northeast, -607 ft elevation change)
  • Přerov Air Base (LKPO, 10%, 82 mi, southeast, -335 ft elevation change)

To get a sense of how much these sources agree with each other, you can view a comparison of Opočno and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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 airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

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.

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