Ulaan-Baator weather by month
Averages and records for each calendar month at Ulaan-Baator, Mongolia, from 1956 to 2025. The warmest month is July, averaging 23.2°C; the coolest is January at −15.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −15.8°C | – | −2.6°C3 January 1999 | −42.2°C6 January 1957 | 36 / 62 |
| February | −10.4°C | – | 11.3°C27 February 2007 | −42.2°C10 February 1957 | 29 / 62 |
| March | −1.4°C | – | 18.9°C31 March 2018 | −38.9°C7 March 1957 | 36 / 63 |
| April | 8.0°C | – | 27.3°C27 April 2020 | −26.1°C1 April 1971 | 27 / 63 |
| May | 16.5°C | – | 38.5°C28 May 1992 | −16.1°C4 May 1960 | 30 / 63 |
| June | 21.2°C | – | 38.3°C26 June 2010 | −3.9°C3 June 1961 | 28 / 63 |
| July | 23.2°C | – | 38.1°C24 July 1999 | −0.2°C3 July 1988 | 28 / 62 |
| August | 21.4°C | – | 33.7°C31 August 1999 | −2.2°C31 August 1957 | 28 / 63 |
| September | 15.7°C | – | 31.7°C3 September 2014 | −13.4°C18 September 1989 | 28 / 62 |
| October | 7.4°C | – | 22.5°C4 October 1987 | −22.0°C31 October 1974 | 32 / 61 |
| November | −4.9°C | – | 13.0°C6 November 1983 | −35.0°C21 November 1961 | 29 / 62 |
| December | −13.6°C | – | 6.1°C2 December 1989 | −40.0°C9 December 1956 | 36 / 59 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 27 to 36 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.