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January Weather in Nahāvand Iran

Daily high temperatures are around 43°F, rarely falling below 34°F or exceeding 53°F. The lowest daily average high temperature is 42°F on January 23.

Daily low temperatures are around 27°F, rarely falling below 17°F or exceeding 35°F. The lowest daily average low temperature is 26°F on January 23.

For reference, on July 23, the hottest day of the year, temperatures in Nahāvand typically range from 67°F to 95°F, while on January 23, the coldest day of the year, they range from 26°F to 42°F.

Average High and Low Temperature in January in Nahāvand

Average High and Low Temperature in January in NahāvandJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313115°F15°F20°F20°F25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°FDecFebJan 2242°FJan 2242°F26°F26°FJan 144°FJan 144°F28°F28°FJan 3143°FJan 3143°F27°F27°FJan 1143°FJan 1143°F26°F26°F
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 January. 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 January in Nahāvand

Average Hourly Temperature in January in NahāvandJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFebfreezingvery coldcoldcold
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.

Pratt, Kansas, United States (7,051 miles away) and Leesburg, Virginia, United States (6,313 miles) are the far-away foreign places with temperatures most similar to Nahāvand (view comparison).

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The month of January in Nahāvand experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 34% throughout the month.

The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 68% of the time.

For reference, on December 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 38%, while on July 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 100%.

Cloud Cover Categories in January in Nahāvand

Cloud Cover Categories in January in NahāvandJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 164%Jan 164%Jan 3168%Jan 3168%Jan 1167%Jan 1167%Jan 2167%Jan 2167%clearmostly 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 Nahāvand, the chance of a wet day over the course of January is essentially constant, remaining around 13% throughout.

For reference, the year's highest daily chance of a wet day is 20% on November 10, and its lowest chance is 1% on June 28.

Over the course of January in Nahāvand, the chance of a day with only rain remains an essentially constant 9% throughout, the chance of a day with mixed snow and rain remains an essentially constant 3% throughout, and the chance of a day with only snow remains an essentially constant 2% throughout.

Probability of Precipitation in January in Nahāvand

Probability of Precipitation in January in NahāvandJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%2%2%4%4%6%6%8%8%10%10%12%12%14%14%16%16%18%18%20%20%DecFebJan 312%Jan 312%Jan 3114%Jan 3114%Jan 1112%Jan 1112%Jan 2115%Jan 2115%snowmixedrain
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 January in Nahāvand is essentially constant, remaining about 0.8 inches throughout, and rarely exceeding 1.6 inches or falling below 0.1 inches.

The lowest average 31-day accumulation is 0.7 inches on January 21.

Average Monthly Rainfall in January in Nahāvand

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.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during January in Nahāvand is essentially constant, remaining about 1.3 inches throughout, and rarely exceeding 5.1 inches or falling to 0.0 inches.

The highest average 31-day accumulation is 1.4 inches on January 15.

Average Monthly Snowfall in January in Nahāvand

The average 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.

Over the course of January in Nahāvand, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 35 minutes, implying an average daily increase of 1 minute, 10 seconds, and weekly increase of 8 minutes, 9 seconds.

The shortest day of the month is January 1, with 9 hours, 55 minutes of daylight and the longest day is January 31, with 10 hours, 30 minutes of daylight.

Hours of Daylight and Twilight in January in Nahāvand

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 Nahāvand is 7:23 AM on January 8 and the earliest sunrise is 8 minutes earlier at 7:15 AM on January 31.

The earliest sunset is 5:17 PM on January 1 and the latest sunset is 28 minutes later at 5:44 PM on January 31.

Daylight saving time is not observed in Nahāvand during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:04 AM and sets 14 hours, 26 minutes later, at 7:31 PM, while on December 21, the shortest day of the year, it rises at 7:18 AM and sets 9 hours, 52 minutes later, at 5:10 PM.

Sunrise & Sunset with Twilight in January in Nahāvand

The solar day over the course of January. 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 January in Nahāvand

Solar Elevation and Azimuth in January in NahāvandJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFeb00101020202030300001010202030303040
northeastsouthwest
Solar elevation and azimuth over the course of January 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 January 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 January in Nahāvand

Moon Rise, Set & Phases in January in NahāvandJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 133:03 AMDec 133:03 AMDec 274:04 AMDec 274:04 AMJan 113:28 PMJan 113:28 PMJan 259:25 PMJan 259:25 PMFeb 102:30 AMFeb 102:30 AMFeb 244:01 PMFeb 244:01 PM7:43 AM7:43 AM5:19 PM5:19 PM4:26 PM4:26 PM7:51 AM7:51 AM7:29 AM7:29 AM5:12 PM5:12 PM5:14 PM5:14 PM7:58 AM7:58 AM7:37 AM7:37 AM6:31 PM6:31 PM6:04 PM6:04 PM7:25 AM7:25 AM
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.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
78%-10:55 AMWNW10:19 PME4:12 AMS251,463 mi
2
69%-11:19 AMW11:15 PME4:51 AMS251,537 mi
3
60%-11:42 AMW-5:30 AMS250,807 mi
4
50%12:10 AME12:05 PMW-6:09 AMS249,248 mi
5
41%1:07 AME12:30 PMWSW-6:49 AMS246,899 mi
6
31%2:06 AMESE12:58 PMWSW-7:32 AMS243,873 mi
7
22%3:08 AMESE1:32 PMWSW-8:20 AMS240,358 mi
8
13%4:14 AMESE2:12 PMWSW-9:13 AMS236,611 mi
9
6%5:22 AMESE3:02 PMSW-10:12 AMS232,945 mi
10
2%6:28 AMSE4:02 PMSW-11:15 AMS229,696 mi
11
0%7:29 AMSE5:12 PMWSW-12:21 PMS227,177 mi
12
1%8:22 AMESE6:27 PMWSW-1:25 PMS225,614 mi
13
5%9:06 AMESE7:42 PMWSW-2:24 PMS225,102 mi
14
12%9:43 AMESE8:56 PMWSW-3:19 PMS225,602 mi
15
21%10:16 AME10:06 PMW-4:10 PMS226,962 mi
16
32%10:45 AME11:14 PMW-4:58 PMS228,966 mi
17
44%11:14 AME--5:45 PMS231,381 mi
18
50%-12:21 AMWNW11:43 AMENE6:32 PMS233,993 mi
19
66%-1:28 AMWNW12:15 PMENE7:21 PMS236,636 mi
20
76%-2:35 AMWNW12:51 PMENE8:13 PMS239,198 mi
21
85%-3:42 AMWNW1:32 PMENE9:07 PMS241,615 mi
22
92%-4:45 AMWNW2:20 PMNE10:02 PMS243,856 mi
23
96%-5:44 AMNW3:15 PMNE10:57 PMS245,907 mi
24
99%-6:36 AMNW4:13 PMENE11:49 PMS247,753 mi
25
100%-7:20 AMWNW5:14 PMENE--
26
100%-7:58 AMWNW6:15 PMENE12:39 AMS249,361 mi
27
99%-8:29 AMWNW7:14 PMENE1:25 AMS250,676 mi
28
96%-8:57 AMWNW8:11 PMENE2:08 AMS251,620 mi
29
91%-9:21 AMW9:06 PME2:48 AMS252,100 mi
30
85%-9:44 AMW10:01 PME3:27 AMS252,013 mi
31
77%-10:07 AMW10:57 PME4:06 AMS251,267 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 Nahāvand is essentially constant during January, remaining around 0% throughout.

Humidity Comfort Levels in January in Nahāvand

Humidity Comfort Levels in January in NahāvandJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 10%Jan 10%Jan 310%Jan 310%Jan 110%Jan 110%Jan 210%Jan 210%drydry
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 Nahāvand is gradually increasing during January, increasing from 7.0 miles per hour to 7.6 miles per hour over the course of the month.

For reference, on March 5, the windiest day of the year, the daily average wind speed is 8.4 miles per hour, while on September 14, the calmest day of the year, the daily average wind speed is 6.6 miles per hour.

Average Wind Speed in January in Nahāvand

Average Wind Speed in January in NahāvandJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphDecFebJan 17.0 mphJan 17.0 mphJan 317.6 mphJan 317.6 mphJan 117.0 mphJan 117.0 mphJan 217.4 mphJan 217.4 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Nahāvand throughout January is predominantly from the south, with a peak proportion of 51% on January 1.

Wind Direction in January in Nahāvand

Wind Direction in January in NahāvandJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebwestsoutheastnorth
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 Nahāvand typically lasts for 7.8 months (240 days), from around March 25 to around November 19, rarely starting before March 7 or after April 11, and rarely ending before November 1 or after December 7.

The month of January in Nahāvand is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in January in Nahāvand

Time Spent in Various Temperature Bands and the Growing Season in January in NahāvandJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFeb0%Jan 160%Jan 160%Jan 270%Jan 27freezingvery coldcoldcool
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 Nahāvand are essentially constant during January, remaining within 1°F of 1°F throughout.

Growing Degree Days in January in Nahāvand

The average growing degree days accumulated over the course of January, 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 Nahāvand is gradually increasing during January, rising by 0.6 kWh, from 3.1 kWh to 3.8 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in January in Nahāvand

Average Daily Incident Shortwave Solar Energy in January in NahāvandJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWh4.0 kWh4.0 kWh4.5 kWh4.5 kWh5.0 kWh5.0 kWh5.5 kWh5.5 kWh6.0 kWh6.0 kWhDecFebJan 13.1 kWhJan 13.1 kWhJan 313.8 kWhJan 313.8 kWhJan 113.3 kWhJan 113.3 kWhJan 213.5 kWhJan 213.5 kWh
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 Nahāvand are 34.191 deg latitude, 48.374 deg longitude, and 5,489 ft elevation.

The topography within 2 miles of Nahāvand contains very significant variations in elevation, with a maximum elevation change of 1,178 feet and an average elevation above sea level of 5,530 feet. Within 10 miles contains very significant variations in elevation (4,501 feet). Within 50 miles also contains extreme variations in elevation (8,563 feet).

The area within 2 miles of Nahāvand is covered by cropland (42%), sparse vegetation (22%), trees (19%), and shrubs (17%), within 10 miles by shrubs (36%) and cropland (34%), and within 50 miles by shrubs (48%) and cropland (22%).

This report illustrates the typical weather in Nahāvand, 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 Nahāvand.

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

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Nahāvand 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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