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Climate and Average Weather Year Round in Qahderījān Iran

In Qahderījān, the summers are hot, arid, and clear and the winters are very cold, dry, and mostly clear. Over the course of the year, the temperature typically varies from 24°F to 97°F and is rarely below 17°F or above 103°F.

Based on the beach/pool score, the best time of year to visit Qahderījān for hot-weather activities is from early June to early September.

Climate in Qahderījān

coldcoolwarmhotswelteringhotwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow99%99%65%65%clearprecipitation: 0.8 inprecipitation: 0.8 in0.0 in0.0 inmuggy: 0%muggy: 0%drydrybeach/pool score: 8.9beach/pool score: 8.90.00.0
Qahderījān weather by month. Click on each chart for more information.

Average Temperature in Qahderījān

The hot season lasts for 3.7 months, from May 29 to September 19, with an average daily high temperature above 87°F. The hottest day of the year is July 12, with an average high of 97°F and low of 66°F.

The cold season lasts for 3.3 months, from November 24 to March 3, with an average daily high temperature below 58°F. The coldest day of the year is January 12, with an average low of 24°F and high of 49°F.

Average High and Low Temperature in Qahderījān

Average High and Low Temperature in QahderījānhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°F110°F110°FJan 1249°FJan 1249°FJul 1297°FJul 1297°F24°F24°F66°F66°FMay 2987°FMay 2987°FSep 1987°FSep 1987°FNov 2458°FNov 2458°FMar 358°FMar 358°F55°F55°F53°F53°F32°F32°F31°F31°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 in Qahderījān

Average Hourly Temperature in QahderījānJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowfreezingvery coldvery coldvery coldvery coldcoldcoldcoolcoolcomfortablewarmhotswelteringfreezingwarm
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.

Alamo, Nevada, United States (7,536 miles away) and Guymon, Oklahoma, United States (7,351 miles) are the far-away foreign places with temperatures most similar to Qahderījān (view comparison).

Compare Qahderījān to another city:

Clouds

In Qahderījān, 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 Qahderījān begins around May 23 and lasts for 4.8 months, ending around October 17. On September 8, 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 17 and lasts for 7.2 months, ending around May 23. On April 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 35% of the time, and clear, mostly clear, or partly cloudy 65% of the time.

Cloud Cover Categories in Qahderījān

Cloud Cover Categories in QahderījānclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Sep 899%Sep 899%Apr 1965%Apr 1965%May 2381%May 2381%Oct 1783%Oct 1783%NowNowclearovercastmostly clearpartly cloudymostly cloudy
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 Qahderījān varies throughout the year.

The wetter season lasts 5.9 months, from November 7 to May 3, with a greater than 6% chance of a given day being a wet day. The chance of a wet day peaks at 12% on March 22.

The drier season lasts 6.1 months, from May 3 to November 7. The smallest chance of a wet day is 1% on September 2.

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 12% on March 22.

Daily Chance of Precipitation in Qahderījān

Daily Chance of Precipitation in QahderījānwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 2212%Mar 2212%Sep 21%Sep 21%Jan 19%Jan 19%Nov 76%Nov 76%May 36%May 36%NowNowrainmixed
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. Qahderījān experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 5.5 months, from November 10 to April 25, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around March 27, with an average total accumulation of 0.8 inches.

The rainless period of the year lasts for 6.5 months, from April 25 to November 10. The least rain falls around September 20, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall in Qahderījān

Average Monthly Rainfall in QahderījānrainrainJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.0 in0.5 in0.5 in1.0 in1.0 in1.5 in1.5 in2.0 in2.0 inMar 270.8 inMar 270.8 inSep 200.0 inSep 200.0 inDec 30.7 inDec 30.7 inJan 210.5 inJan 210.5 inJul 50.1 inJul 50.1 in
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.

Sun

The length of the day in Qahderījān varies significantly over the course of the year. In 2021, the shortest day is December 21, with 10 hours, 0 minutes of daylight; the longest day is June 21, with 14 hours, 18 minutes of daylight.

Hours of Daylight and Twilight in Qahderījān

Hours of Daylight and Twilight in QahderījānJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2014 hr, 18 minJun 2114 hr, 18 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 2210 hr, 0 minDec 2110 hr, 0 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 5:52 AM on September 22, and the latest sunrise is 1 hour, 15 minutes later at 7:06 AM on January 8. The earliest sunset is at 4:58 PM on December 4, and the latest sunset is 3 hours, 18 minutes later at 8:15 PM on June 29.

Daylight saving time (DST) is observed in Qahderījān 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 in Qahderījān

Sunrise & Sunset with Twilight and Daylight Saving Time in QahderījānJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSep 225:52 AMSep 225:52 AM8:15 PMJun 298:15 PMJun 29Dec 44:58 PMDec 44:58 PM7:06 AMJan 87:06 AMJan 8Mar 22DSTMar 22DSTDSTSep 21DSTSep 21daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 in Qahderījān

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 Qahderījān, 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 in Qahderījān

Humidity Comfort Levels in QahderījānJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 30%Jul 30%NowNowdrydry
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 Qahderījān experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.1 months, from January 15 to May 18, with average wind speeds of more than 7.1 miles per hour. The windiest day of the year is March 13, with an average hourly wind speed of 8.6 miles per hour.

The calmer time of year lasts for 7.9 months, from May 18 to January 15. The calmest day of the year is October 12, with an average hourly wind speed of 5.6 miles per hour.

Average Wind Speed in Qahderījān

Average Wind Speed in QahderījānwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphMar 138.6 mphMar 138.6 mphOct 125.6 mphOct 125.6 mphJan 157.1 mphJan 157.1 mphMay 187.1 mphMay 187.1 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 Qahderījān 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 75% 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 61% on January 1.

Wind Direction in Qahderījān

Wind Direction in QahderījānWEWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwesteastnorthsouth
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 Qahderījān 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 Qahderījān for general outdoor tourist activities are from mid May to mid June and from late August to mid October, with a peak score in the third week of September.

Tourism Score in Qahderījān

Tourism Score in Qahderījānbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.58.50.50.58.08.06.46.4NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Qahderījān for hot-weather activities is from early June to early September, with a peak score in the second week of August.

Beach/Pool Score in Qahderījān

Beach/Pool Score in Qahderījānbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.98.90.00.0NowNowprecipitationprecipitationcloudscloudstemperaturetemperature 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 Qahderījān typically lasts for 7.4 months (226 days), from around March 30 to around November 11, rarely starting before March 13 or after April 15, and rarely ending before October 23 or after November 28.

Time Spent in Various Temperature Bands and the Growing Season in Qahderījān

Time Spent in Various Temperature Bands and the Growing Season in Qahderījāngrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Mar 3050%Mar 3050%Nov 1150%Nov 1190%Apr 1590%Apr 1590%Oct 2390%Oct 2310%Mar 1310%Mar 1310%Nov 2810%Nov 280%Jan 290%Jan 29Jul 14100%Jul 14100%NowNowfreezingvery coldcoldcomfortablewarmhotcoolsweltering
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 Qahderījān should appear around March 13, only rarely appearing before February 26 or after March 28.

Growing Degree Days in Qahderījān

Growing Degree Days in QahderījānJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°FMar 1385°FMar 1385°FMay 24900°FMay 24900°FJun 281,800°FJun 281,800°FDec 314,741°FDec 314,741°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 3.4 months, from May 12 to August 25, with an average daily incident shortwave energy per square meter above 7.7 kWh. The brightest day of the year is June 18, with an average of 8.8 kWh.

The darker period of the year lasts for 3.2 months, from November 2 to February 8, with an average daily incident shortwave energy per square meter below 4.5 kWh. The darkest day of the year is December 19, with an average of 3.4 kWh.

Average Daily Incident Shortwave Solar Energy in Qahderījān

Average Daily Incident Shortwave Solar Energy in QahderījānbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJun 188.8 kWhJun 188.8 kWhDec 193.4 kWhDec 193.4 kWhMay 127.7 kWhMay 127.7 kWhAug 257.7 kWhAug 257.7 kWhNov 24.5 kWhNov 24.5 kWhFeb 84.5 kWhFeb 84.5 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.

Topography

For the purposes of this report, the geographical coordinates of Qahderījān are 32.577 deg latitude, 51.455 deg longitude, and 5,292 ft elevation.

The topography within 2 miles of Qahderījān is essentially flat, with a maximum elevation change of 82 feet and an average elevation above sea level of 5,296 feet. Within 10 miles is essentially flat (2,818 feet). Within 50 miles contains large variations in elevation (6,109 feet).

The area within 2 miles of Qahderījān is covered by cropland (97%), within 10 miles by cropland (38%) and shrubs (35%), and within 50 miles by shrubs (54%) and bare soil (18%).

Data Sources

This report illustrates the typical weather in Qahderījān, 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 Qahderījān.

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

The stations contributing to this reconstruction are: Isfahan International Airport (OIFM, 66%, 43 kilometers, northeast); Shahrekord Airport (OIFS, 27%, 65 kilometers, southwest); and Abadeh (OISA, 7%, 193 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 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.