Climate and Average Weather Year Round at Khoy Airport Iran
At Khoy Airport, the summers are hot, arid, and clear and the winters are short, very cold, dry, and partly cloudy. Over the course of the year, the temperature typically varies from 22°F to 91°F and is rarely below 9°F or above 98°F.
Based on the beach/pool score, the best time of year to visit Khoy Airport for hot-weather activities is from late June to early September.
Climate at Khoy Airport
Average Temperature at Khoy Airport
The hot season lasts for 3.6 months, from June 3 to September 20, with an average daily high temperature above 81°F. The hottest day of the year is July 28, with an average high of 91°F and low of 66°F.
The cold season lasts for 3.0 months, from November 29 to February 26, with an average daily high temperature below 48°F. The coldest day of the year is January 15, with an average low of 22°F and high of 38°F.
Average High and Low Temperature at Khoy Airport
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 at Khoy Airport
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
Overbrook, Kansas, United States (6,551 miles away) and Clover Hill, Maryland, United States (5,944 miles) are the far-away foreign places with temperatures most similar to Khoy Airport (view comparison).
At Khoy Airport, 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 at Khoy Airport begins around May 26 and lasts for 4.5 months, ending around October 9. On August 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 99% of the time, and overcast or mostly cloudy 1% of the time.
The cloudier part of the year begins around October 9 and lasts for 7.5 months, ending around May 26. On March 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 43% of the time, and clear, mostly clear, or partly cloudy 57% of the time.
Cloud Cover Categories at Khoy Airport
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Khoy Airport varies throughout the year.
The wetter season lasts 7.1 months, from October 25 to May 28, with a greater than 11% chance of a given day being a wet day. The chance of a wet day peaks at 21% on May 1.
The drier season lasts 4.9 months, from May 28 to October 25. The smallest chance of a wet day is 2% on August 8.
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 at Khoy Airport changes throughout the year.
Rain alone is the most common for 12 months, from January 14 to January 1. The highest chance of a day with rain alone is 20% on May 1.
Snow alone is the most common for 1.9 weeks, from January 1 to January 14. The highest chance of a day with snow alone is 3% on January 7.
Daily Chance of Precipitation at Khoy Airport
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. Khoy Airport experiences some seasonal variation in monthly rainfall.
The rainy period of the year lasts for 7.7 months, from October 13 to June 5, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around May 1, with an average total accumulation of 1.0 inches.
The rainless period of the year lasts for 4.3 months, from June 5 to October 13. The least rain falls around August 5, with an average total accumulation of 0.1 inches.
Average Monthly Rainfall at Khoy Airport
The sliding 31-day liquid-equivalent quantity of snowfall at Khoy Airport 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 at Khoy Airport
The length of the day at Khoy Airport varies significantly over the course of the year. In 2021, the shortest day is December 21, with 9 hours, 29 minutes of daylight; the longest day is June 21, with 14 hours, 51 minutes of daylight.
Hours of Daylight and Twilight at Khoy Airport
The earliest sunrise is at 6:05 AM on June 13, and the latest sunrise is 1 hour, 42 minutes later at 7:47 AM on January 5. The earliest sunset is at 5:09 PM on December 7, and the latest sunset is 3 hours, 49 minutes later at 8:58 PM on June 27.
Daylight saving time (DST) is observed at Khoy Airport during 2021, starting in the spring on March 22, lasting 6.0 months, and ending in the fall on September 21.
Sunrise & Sunset with Twilight and Daylight Saving Time at Khoy Airport
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 at Khoy Airport
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 at Khoy Airport, 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, remaining a virtually constant 0% throughout.
Humidity Comfort Levels at Khoy Airport
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 at Khoy Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.9 months, from February 2 to August 30, with average wind speeds of more than 5.9 miles per hour. The windiest day of the year is April 18, with an average hourly wind speed of 6.8 miles per hour.
The calmer time of year lasts for 5.1 months, from August 30 to February 2. The calmest day of the year is November 28, with an average hourly wind speed of 5.0 miles per hour.
Average Wind Speed at Khoy Airport
The predominant average hourly wind direction at Khoy Airport varies throughout the year.
The wind is most often from the east for 3.7 months, from June 6 to September 27, with a peak percentage of 54% on July 26. The wind is most often from the west for 8.3 months, from September 27 to June 6, with a peak percentage of 44% on January 1.
Wind Direction at Khoy Airport
Best Time of Year to Visit
To characterize how pleasant the weather is at Khoy Airport 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 times of year to visit Khoy Airport for general outdoor tourist activities are from late May to early July and from mid August to early October, with a peak score in the second week of September.
Tourism Score at Khoy Airport
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 Khoy Airport for hot-weather activities is from late June to early September, with a peak score in the first week of August.
Beach/Pool Score at Khoy Airport
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.
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 at Khoy Airport typically lasts for 7.5 months (230 days), from around March 27 to around November 12, rarely starting before March 9 or after April 16, and rarely ending before October 24 or after December 1.
Time Spent in Various Temperature Bands and the Growing Season at Khoy Airport
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
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 at Khoy Airport should appear around April 3, only rarely appearing before March 20 or after April 17.
Growing Degree Days at Khoy Airport
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 3.2 months, from May 19 to August 25, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest day of the year is July 5, with an average of 8.3 kWh.
The darker period of the year lasts for 3.5 months, from October 29 to February 13, with an average daily incident shortwave energy per square meter below 3.7 kWh. The darkest day of the year is December 24, with an average of 2.5 kWh.
Average Daily Incident Shortwave Solar Energy at Khoy Airport
For the purposes of this report, the geographical coordinates of Khoy Airport are 38.427 deg latitude, 44.974 deg longitude, and 3,901 ft elevation.
The topography within 2 miles of Khoy Airport contains only modest variations in elevation, with a maximum elevation change of 341 feet and an average elevation above sea level of 3,892 feet. Within 10 miles contains only modest variations in elevation (3,812 feet). Within 50 miles also contains extreme variations in elevation (9,511 feet).
The area within 2 miles of Khoy Airport is covered by shrubs (52%), sparse vegetation (21%), and cropland (20%), within 10 miles by shrubs (51%) and cropland (21%), and within 50 miles by shrubs (50%) and sparse vegetation (18%).
This report illustrates the typical weather at Khoy Airport, 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
Khoy Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
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.
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.