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Average Weather in Oster Ukraine

In Oster, 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 18°F to 78°F and is rarely below -1°F or above 89°F.

Based on the tourism score, the best time of year to visit Oster for warm-weather activities is from mid June to late August.

Climate Summary

freezingcoldcoolcomfortablewarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow68%68%27%27%overcastclearprecipitation: 2.4 inprecipitation: 2.4 in0.9 in0.9 inmuggy: 8%muggy: 8%0%0%drydrytourism score: 7.2tourism score: 7.20.00.0
Click on each chart for more information.

Temperature

The warm season lasts for 3.7 months, from May 16 to September 8, with an average daily high temperature above 68°F. The hottest day of the year is July 27, with an average high of 78°F and low of 59°F.

The cold season lasts for 3.8 months, from November 18 to March 12, with an average daily high temperature below 39°F. The coldest day of the year is February 3, with an average low of 18°F and high of 29°F.

Average High and Low Temperature

Average High and Low Temperature in OsterwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 329°FFeb 329°FJul 2778°FJul 2778°F18°F18°F59°F59°FMay 1668°FMay 1668°FSep 868°FSep 868°FNov 1839°FNov 1839°FMar 1239°FMar 1239°F49°F49°F51°F51°F30°F30°F26°F26°FNowNow
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 OsterJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingfreezingvery coldcoldcoldcoolcomfortablewarmvery cold
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.

Forest City, Pennsylvania, United States (4,665 miles away) is the far-away foreign place with temperatures most similar to Oster (view comparison).

Clouds

In Oster, 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 Oster begins around April 20 and lasts for 5.9 months, ending around October 16. On August 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.

The cloudier part of the year begins around October 16 and lasts for 6.1 months, ending around April 20. On November 29, the cloudiest day of the year, the sky is overcast or mostly cloudy 73% of the time, and clear, mostly clear, or partly cloudy 27% of the time.

Cloud Cover Categories

Cloud Cover Categories in OsterclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 268%Aug 268%Nov 2927%Nov 2927%Apr 2047%Apr 2047%Oct 1648%Oct 1648%NowNowclearpartly cloudymostly cloudyovercastmostly clear
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 Oster varies throughout the year.

The wetter season lasts 2.7 months, from May 12 to August 3, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 32% on June 27.

The drier season lasts 9.3 months, from August 3 to May 12. The smallest chance of a wet day is 16% on March 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 Oster changes throughout the year.

Rain alone is the most common for 11 months, from February 17 to January 10. The highest chance of a day with rain alone is 32% on June 27.

Snow alone is the most common for 1.2 months, from January 10 to February 17. The highest chance of a day with snow alone is 8% on February 4.

Daily Chance of Precipitation

Daily Chance of Precipitation in OstersnowrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jun 2732%Jun 2732%Mar 2116%Mar 2116%Jan 1017%Jan 1017%Feb 1718%Feb 1718%Jan 117%Jan 117%May 1224%May 1224%Aug 324%Aug 324%NowNowsnowrain
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. Oster experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 10 months, from February 17 to December 30, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around June 28, with an average total accumulation of 2.4 inches.

The rainless period of the year lasts for 1.6 months, from December 30 to February 17. The least rain falls around January 20, with an average total accumulation of 0.4 inches.

Average Monthly Rainfall

Average Monthly Rainfall in OsterrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inJun 282.4 inJun 282.4 inJan 200.4 inJan 200.4 inDec 300.5 inDec 300.5 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

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. Oster experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 5.3 months, from October 29 to April 6, 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 22, with an average total liquid-equivalent accumulation of 0.5 inches.

The snowless period of the year lasts for 6.7 months, from April 6 to October 29. The least snow falls around July 27, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in OstersnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 in2.5 in2.5 inJan 220.5 inJan 220.5 inJul 270.0 inJul 270.0 inOct 290.1 inOct 290.1 inApr 60.1 inApr 60.1 in
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 Oster varies extremely over the course of the year. In 2021, the shortest day is December 21, with 7 hours, 55 minutes of daylight; the longest day is June 21, with 16 hours, 32 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in OsterJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2016 hr, 32 minJun 2116 hr, 32 minJun 2112 hr, 12 minSep 2212 hr, 12 minSep 227 hr, 55 minDec 217 hr, 55 minDec 21nightnightdayNowNow
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 4:41 AM on June 17, and the latest sunrise is 3 hours, 18 minutes later at 7:59 AM on December 31. The earliest sunset is at 3:50 PM on December 12, and the latest sunset is 5 hours, 25 minutes later at 9:14 PM on June 25.

Daylight saving time (DST) is observed in Oster during 2021, starting in the spring on March 28, lasting 7.1 months, and ending in the fall on October 31.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in OsterJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 174:41 AMJun 174:41 AM9:14 PMJun 259:14 PMJun 25Dec 123:50 PMDec 123:50 PM7:59 AMDec 317:59 AMDec 31Mar 28DSTMar 28DSTDSTOct 31DSTOct 31daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunsetNowNow
The solar day over the course of the year 2021. 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.

Moon

The figure below presents a compact representation of key lunar data for 2021. 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.

Moon Rise, Set & Phases

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.

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 Oster, 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.

Humidity Comfort Levels

Humidity Comfort Levels in OsterJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 200%Nov 200%Jul 208%Jul 208%NowNowcomfortablecomfortabledrydryhumidhumid
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 Oster experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.4 months, from October 11 to April 23, with average wind speeds of more than 9.5 miles per hour. The windiest day of the year is January 25, with an average hourly wind speed of 11.1 miles per hour.

The calmer time of year lasts for 5.6 months, from April 23 to October 11. The calmest day of the year is July 27, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed

Average Wind Speed in OsterwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphJan 2511.1 mphJan 2511.1 mphJul 277.9 mphJul 277.9 mphOct 119.5 mphOct 119.5 mphApr 239.5 mphApr 239.5 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 Oster varies throughout the year.

The wind is most often from the south for 3.7 weeks, from April 1 to April 27 and for 2.9 weeks, from November 6 to November 26, with a peak percentage of 34% on November 12. The wind is most often from the north for 3.6 months, from April 27 to August 15, with a peak percentage of 34% on July 4. The wind is most often from the west for 2.7 months, from August 15 to November 6 and for 4.2 months, from November 26 to April 1, with a peak percentage of 35% on October 24.

Wind Direction

Wind Direction in OsterWSNWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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 Oster 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 Oster for general outdoor tourist activities is from mid June to late August, with a peak score in the first week of August.

Tourism Score

Tourism Score in Osterbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.27.20.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature tourism 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 Oster for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score in OsterJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.45.40.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature beach/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 Oster typically lasts for 6.0 months (183 days), from around April 15 to around October 15, rarely starting before March 28 or after May 4, and rarely ending before September 27 or after November 2.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Ostergrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1550%Apr 1550%Oct 1550%Oct 1590%May 490%May 490%Sep 2790%Sep 2710%Mar 2810%Mar 2810%Nov 210%Nov 20%Dec 140%Dec 14Jul 20100%Jul 20100%NowNowfrigidfreezingvery coldcoolcomfortablewarmcoldhot
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 Oster should appear around April 27, only rarely appearing before April 18 or after May 8.

Growing Degree Days

Growing Degree Days in OsterJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°FApr 2790°FApr 2790°FJul 1900°FJul 1900°FAug 191,800°FAug 191,800°FDec 312,297°FDec 312,297°FNowNow
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 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 June 21, with an average of 6.5 kWh.

The darker period of the year lasts for 3.7 months, from October 26 to February 17, with an average daily incident shortwave energy per square meter below 1.9 kWh. The darkest day of the year is December 20, with an average of 0.7 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in OsterbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJun 216.5 kWhJun 216.5 kWhDec 200.7 kWhDec 200.7 kWhMay 15.3 kWhMay 15.3 kWhAug 215.3 kWhAug 215.3 kWhOct 261.9 kWhOct 261.9 kWhFeb 171.9 kWhFeb 171.9 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 Oster are 50.951 deg latitude, 30.882 deg longitude, and 374 ft elevation.

The topography within 2 miles of Oster contains only modest variations in elevation, with a maximum elevation change of 115 feet and an average elevation above sea level of 344 feet. Within 10 miles also contains only modest variations in elevation (171 feet). Within 50 miles also contains only modest variations in elevation (456 feet).

The area within 2 miles of Oster is covered by cropland (46%), trees (25%), grassland (14%), and shrubs (10%), within 10 miles by cropland (48%) and trees (29%), and within 50 miles by cropland (47%) and trees (30%).

Data Sources

This report illustrates the typical weather in Oster, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Oster.

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

The stations contributing to this reconstruction are: Gostomel Airport (36%, 62 kilometers, southwest); Kiev Boryspil International Airport (32%, 67 kilometers, south); and Kyiv Zhuliany International Airport (31%, 68 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 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 © 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.