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Weather & Climate in Bayansayr, Mongolia
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bayansayr has a cool climate with an average annual temperature of 28°F (-3°C). Winters average 10°F in January while summers reach 58°F in July. The area gets 342 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 4.9 inches (drier than the 38-inch national average). The area receives 5.5 inches of snow annually. The city sits at an elevation of 4,350 feet.
Temperature
10°F Jan (-12°C)
58°F Jul (15°C)
| Annual Average | 27.5°F |
| 49% below US avg | |
| January Average | 10°F (-12°C) |
| July Average | 58°F (15°C) |
| Sunny Days | 342 days/yr |
Geography
| Elevation | 4,350 ft (1,326 m) |
| Area | 24.7 sq mi (64.0 km²) |
| Population Density | 130/sq mi |
| Coordinates | 45.5553°N, 99.4331°W |
| Timezone | Asia/Ulaanbaatar |
Precipitation & Snow
Air Quality
Earthquake History
20 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.3.
| Apr 13, 2011 | central Mongolia | M5.3 | 67 km | 16 km |
| Apr 14, 2007 | 198 km SE of Altai, Mongolia | M4.9 | 94 km | 24 km |
| Aug 27, 1990 | 196 km WSW of Bayanhongor, Mongolia | M4.8 | 75 km | 33 km |
| Apr 16, 2011 | 188 km WSW of Bayanhongor, Mongolia | M4.8 | 67 km | 10 km |
| Oct 19, 2011 | 129 km SSW of Bayanhongor, Mongolia | M4.7 | 58 km | 10 km |
| Jan 29, 1995 | 139 km SSW of Bayanhongor, Mongolia | M4.6 | 79 km | 33 km |
| May 16, 2019 | 150 km WNW of Bayanhongor, Mongolia | M4.6 | 145 km | 10 km |
| Sep 29, 2016 | 137 km WNW of Hovd, Mongolia | M4.5 | 106 km | 15 km |
| Mar 30, 2018 | 141 km SE of Altai, Mongolia | M4.5 | 140 km | 10 km |
| Jun 4, 1991 | central Mongolia | M4.5 | 85 km | 10 km |
| Mar 8, 1995 | 126 km WNW of Hovd, Mongolia | M4.4 | 116 km | 33 km |
| Apr 11, 1999 | 204 km WSW of Hovd, Mongolia | M4.3 | 145 km | 10 km |
| Aug 20, 2007 | 162 km WSW of Bayanhongor, Mongolia | M4.2 | 67 km | 10 km |
| Apr 11, 2022 | 183 km SE of Altai, Mongolia | M4.2 | 95 km | 10 km |
| Jan 21, 2001 | 166 km ESE of Altai, Mongolia | M4.1 | 95 km | 33 km |
| Mar 24, 2024 | 136 km SSW of Bayanhongor, Mongolia | M4.1 | 68 km | 10 km |
| Jul 16, 1998 | 88 km S of Bayanhongor, Mongolia | M4.1 | 87 km | 33 km |
| Sep 12, 2004 | 138 km SSW of Bayanhongor, Mongolia | M3.9 | 78 km | 47 km |
| Aug 2, 1996 | Western Mongolia | M3.9 | 147 km | 33 km |
| Jun 25, 2006 | 151 km SE of Altai, Mongolia | M3.7 | 149 km | 32 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 10°F (-12°C) | 0.1 in | Driest |
| February | -1°F (-19°C) | 0.1 in | |
| March | 12°F (-11°C) | 0.2 in | |
| April | 32°F (-0°C) | 0.4 in | |
| May | 46°F (8°C) | 0.6 in | |
| June | 55°F (13°C) | 1.5 in | |
| July | 58°F (15°C) | 2.4 in | Warmest, Wettest |
| August | 55°F (13°C) | 1.9 in | |
| September | 44°F (7°C) | 0.8 in | |
| October | 29°F (-2°C) | 0.3 in | |
| November | 10°F (-12°C) | 0.2 in | |
| December | -2°F (-19°C) | 0.1 in | Coldest |
Bayansayr has a seasonal temperature swing of 60°F / from -2°F in December to 58°F in July. Total annual precipitation is 8.6 inches, with July being the wettest month (2.4") and January the driest (0.1").