Tsagaan-Olom, Mongolia Climate
The warmest month is July, with an average high of 24°C; the coldest is January, with an average low of -23°C. A normal year brings 192 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Oct 2
- Normal high
- 11°C
- Normal low
- -3°C
- Reanalysis high
- 18°Cin 2013
- Reanalysis low
- -8°Cin 1992
- Chance of a wet day
- 11%
- Daylight
- 11 h 39 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | -12°C | -23°C | 1°C (2002) | -38°C (2010) | 3 mm | 0.4 |
| February | -7°C | -20°C | 7°C (2007) | -35°C (2005) | 3 mm | 0.9 |
| March | 0°C | -13°C | 16°C (2001) | -30°C (2010) | 6 mm | 1.8 |
| April | 9°C | -5°C | 25°C (2015) | -21°C (2010) | 9 mm | 2.4 |
| May | 15°C | 0°C | 29°C (2002) | -11°C (2017) | 17 mm | 4.2 |
| June | 21°C | 7°C | 32°C (2001) | -5°C (2006) | 37 mm | 7.9 |
| July | 24°C | 10°C | 33°C (1999) | -1°C (2011) | 48 mm | 9.2 |
| August | 22°C | 7°C | 32°C (2006) | -3°C (2004) | 36 mm | 7.2 |
| September | 15°C | 1°C | 26°C (2019) | -11°C (2015) | 15 mm | 4.2 |
| October | 7°C | -5°C | 19°C (2002) | -19°C (2016) | 9 mm | 2.8 |
| November | -3°C | -14°C | 10°C (2019) | -28°C (1997) | 5 mm | 1.1 |
| December | -10°C | -20°C | 1°C (1996) | -33°C (2009) | 4 mm | 0.8 |
| Year | 7°C | -6°C | 192 mm | 43 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
192 mm in a normal year, most in July.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Tsagaan-Olom.
Days with a mean dew point of 18°C or more are rare here in every month.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | -21°C | 78% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | -19°C | 69% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | -15°C | 52% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | -11°C | 41% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | -7°C | 38% | 100% | 0% | 0% | 0% | 0% | 0% |
| June | 0°C | 41% | 100% | 0% | 0% | 0% | 0% | 0% |
| July | 4°C | 45% | 100% | 0% | 0% | 0% | 0% | 0% |
| August | 2°C | 46% | 100% | 0% | 0% | 0% | 0% | 0% |
| September | -5°C | 45% | 100% | 0% | 0% | 0% | 0% | 0% |
| October | -10°C | 51% | 100% | 0% | 0% | 0% | 0% | 0% |
| November | -15°C | 64% | 100% | 0% | 0% | 0% | 0% | 0% |
| December | -19°C | 75% | 100% | 0% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is January, with the sky 45 percent covered on average; the cloudiest is July, at 61 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is April, averaging 17.6 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 22, with 15 h 52 min of daylight; the shortest is Dec 21, with 8 h 32 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Tsagaan-Olom in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.