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December Weather in Har-Us Mongolia

Daily high temperatures decrease by 7°F, from 26°F to 20°F, rarely falling below 10°F or exceeding 36°F.

Daily low temperatures decrease by 6°F, from 9°F to 3°F, rarely falling below -6°F or exceeding 18°F.

For reference, on July 23, the hottest day of the year, temperatures in Har-Us typically range from 56°F to 80°F, while on January 18, the coldest day of the year, they range from 0°F to 18°F.

Average High and Low Temperature in December in Har-Us

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 December. 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 December in Har-Us

Average Hourly Temperature in December in Har-UsDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJanNowNowfrigidfrigidfreezingvery 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.

Weyburn, Saskatchewan, Canada (5,601 miles away) is the far-away foreign place with temperatures most similar to Har-Us (view comparison).

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The month of December in Har-Us experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 36% throughout the month.

The clearest day of the month is December 28, with clear, mostly clear, or partly cloudy conditions 65% of the time.

For reference, on June 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 44%, while on September 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.

Cloud Cover Categories in December in Har-Us

Cloud Cover Categories in December in Har-UsDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanDec 163%Dec 163%Dec 3165%Dec 3165%Dec 1162%Dec 1162%Dec 2164%Dec 2164%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.

Over the course of December in Har-Us, the length of the day is essentially constant. The shortest day of the month is December 21, with 8 hours, 18 minutes of daylight and the longest day is December 1, with 8 hours, 36 minutes of daylight.

Hours of Daylight and Twilight in December in Har-Us

Hours of Daylight and Twilight in December in Har-UsDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 218 hr, 18 minDec 218 hr, 18 minnightnightdaydayDec 18 hr, 36 minDec 18 hr, 36 minNowNow
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 of the month in Har-Us is 8:25 AM on December 1 and the latest sunrise is 21 minutes later at 8:46 AM on December 31.

The earliest sunset is 4:58 PM on December 11 and the latest sunset is 10 minutes later at 5:08 PM on December 31.

Daylight saving time is not observed in Har-Us during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 4:52 AM and sets 16 hours, 7 minutes later, at 8:59 PM, while on December 21, the shortest day of the year, it rises at 8:43 AM and sets 8 hours, 18 minutes later, at 5:01 PM.

Sunrise & Sunset with Twilight in December in Har-Us

The solar day over the course of December. 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 December in Har-Us

Solar Elevation and Azimuth in December in Har-UsDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMNovJan0010102020000101020NowNow
northeastsouthwest
Solar elevation and azimuth over the course of December 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 December 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 December in Har-Us

Moon Rise, Set & Phases in December in Har-UsDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 17:48 PMNov 17:48 PMNov 164:29 AMNov 164:29 AMDec 11:22 PMDec 11:22 PMDec 154:02 PMDec 154:02 PMDec 315:28 AMDec 315:28 AMJan 145:28 AMJan 145:28 AMJan 297:37 PMJan 297:37 PM7:22 AM7:22 AM5:09 PM5:09 PM4:29 PM4:29 PM8:41 AM8:41 AM8:43 AM8:43 AM4:28 PM4:28 PM4:19 PM4:19 PM10:04 AM10:04 AM9:34 AM9:34 AM5:03 PM5:03 PM4:14 PM4:14 PM9:24 AM9:24 AM8:44 AM8:44 AM5:18 PM5:18 PMNowNow
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.
Dec 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
0%8:43 AMSE4:28 PMSW-12:36 PMS246,300 mi
2
1%9:51 AMSE5:11 PMSW-1:31 PMS244,260 mi
3
4%10:51 AMSE6:07 PMSW-2:29 PMS242,143 mi
4
10%11:38 AMSE7:16 PMSW-3:27 PMS239,999 mi
5
17%12:14 PMSE8:33 PMSW-4:24 PMS237,853 mi
6
26%12:41 PMESE9:53 PMWSW-5:17 PMS235,722 mi
7
37%1:03 PMESE11:14 PMWSW-6:07 PMS233,631 mi
8
50%1:20 PMESE--6:55 PMS231,634 mi
9
60%-12:34 AMW1:36 PME7:42 PMS229,826 mi
10
71%-1:55 AMW1:52 PME8:30 PMS228,344 mi
11
82%-3:17 AMWNW2:09 PMENE9:19 PMS227,354 mi
12
90%-4:42 AMWNW2:29 PMENE10:12 PMS227,028 mi
13
96%-6:09 AMWNW2:55 PMNE11:08 PMS227,507 mi
14
98%-7:36 AMNW3:30 PMNE--
15
100%-8:57 AMNW4:19 PMNE12:09 AMS228,857 mi
16
100%-10:04 AMNW5:23 PMNE1:11 AMS231,039 mi
17
97%-10:53 AMNW6:37 PMNE2:12 AMS233,904 mi
18
93%-11:28 AMNW7:55 PMNE3:09 AMS237,207 mi
19
86%-11:53 AMWNW9:12 PMENE4:01 AMS240,656 mi
20
78%-12:12 PMWNW10:25 PMENE4:48 AMS243,960 mi
21
69%-12:27 PMWNW11:35 PME5:31 AMS246,853 mi
22
59%-12:41 PMW-6:11 AMS249,127 mi
23
50%12:42 AME12:53 PMW-6:50 AMS250,635 mi
24
40%1:49 AME1:06 PMWSW-7:29 AMS251,302 mi
25
31%2:55 AMESE1:20 PMWSW-8:08 AMS251,122 mi
26
22%4:04 AMESE1:36 PMWSW-8:51 AMS250,154 mi
27
14%5:15 AMESE1:57 PMSW-9:36 AMS248,516 mi
28
8%6:27 AMSE2:26 PMSW-10:26 AMS246,370 mi
29
3%7:38 AMSE3:04 PMSW-11:21 AMS243,909 mi
30
1%8:41 AMSE3:56 PMSW-12:19 PMS241,334 mi
31
0%9:34 AMSE5:03 PMSW-1:18 PMS238,837 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 Har-Us is essentially constant during December, remaining around 0% throughout.

Humidity Comfort Levels in December in Har-Us

Humidity Comfort Levels in December in Har-UsDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NovJanDec 10%Dec 10%Dec 310%Dec 310%Dec 110%Dec 110%Dec 210%Dec 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 Har-Us is gradually decreasing during December, decreasing from 6.6 miles per hour to 6.1 miles per hour over the course of the month.

For reference, on May 7, the windiest day of the year, the daily average wind speed is 8.8 miles per hour, while on January 23, the calmest day of the year, the daily average wind speed is 5.5 miles per hour.

Average Wind Speed in December in Har-Us

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 Har-Us throughout December is predominantly from the west, with a peak proportion of 77% on December 16.

Wind Direction in December in Har-Us

Wind Direction in December in Har-UsDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%NovJanNowNowwestsoutheast
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 Har-Us typically lasts for 4.5 months (138 days), from around May 8 to around September 23, rarely starting before April 19 or after May 28, and rarely ending before September 6 or after October 9.

The month of December in Har-Us is reliably fully outside of the growing season.

Time Spent in Various Temperature Bands and the Growing Season in December in Har-Us

Time Spent in Various Temperature Bands and the Growing Season in December in Har-UsDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJan-0%Dec 16-0%Dec 160%Nov 280%Nov 28frigidfreezingvery coldcold
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 Har-Us are essentially constant during December, remaining around 1,984°F throughout.

Growing Degree Days in December in Har-Us

The average growing degree days accumulated over the course of December, 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 Har-Us is essentially constant during December, remaining within 0.1 kWh of 1.6 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 1.5 kWh on December 20.

Average Daily Incident Shortwave Solar Energy in December in Har-Us

Average Daily Incident Shortwave Solar Energy in December in Har-UsDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 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 kWhNovJanDec 201.5 kWhDec 201.5 kWhDec 11.7 kWhDec 11.7 kWhDec 311.5 kWhDec 311.5 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 Har-Us are 48.483 deg latitude, 91.433 deg longitude, and 4,170 ft elevation.

The topography within 2 miles of Har-Us contains only modest variations in elevation, with a maximum elevation change of 367 feet and an average elevation above sea level of 4,205 feet. Within 10 miles contains only modest variations in elevation (1,667 feet). Within 50 miles contains very significant variations in elevation (9,977 feet).

The area within 2 miles of Har-Us is covered by bare soil (99%), within 10 miles by bare soil (95%), and within 50 miles by bare soil (89%).

This report illustrates the typical weather in Har-Us, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Har-Us is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Har-Us, according to the International Standard Atmosphere .

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.

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.

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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.

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