Bayandelger climate by month
Averages and records for each calendar month at Bayandelger, Mongolia, from 1956 to 2026. The warmest month is July, averaging 28.0°C; the coolest is January at −14.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −14.0°C | −22.2°C | 2.2°C4 January 2015 | −37.8°C15 January 1958 | 37 / 64 |
| February | −9.0°C | −16.4°C | 10.9°C27 February 2007 | −35.0°C22 February 1957 | 29 / 64 |
| March | 0.9°C | −11.9°C | 22.5°C31 March 2002 | −33.9°C11 March 1957 | 47 / 64 |
| April | 12.4°C | 0.4°C | 29.0°C25 April 2015 | −21.1°C1 April 1971 | 36 / 64 |
| May | 19.6°C | 8.0°C | 36.0°C17 May 2017 | −8.0°C3 May 1976 | 43 / 63 |
| June | 25.1°C | 12.7°C | 37.5°C23 June 2023 | 0.0°C4 June 1978 | 35 / 64 |
| July | 28.0°C | 18.3°C | 39.3°C16 July 2017 | 1.1°C15 July 1983 | 35 / 63 |
| August | 25.8°C | 15.2°C | 39.4°C2 August 2016 | 1.3°C28 August 2017 | 39 / 62 |
| September | 19.9°C | 9.3°C | 35.2°C1 September 1999 | −6.4°C29 September 2014 | 37 / 63 |
| October | 9.8°C | −3.1°C | 30.5°C1 October 2019 | −21.0°C31 October 1974 | 40 / 62 |
| November | −1.9°C | −12.7°C | 15.1°C3 November 2015 | −30.5°C29 November 2022 | 30 / 63 |
| December | −11.3°C | −19.5°C | 4.4°C1 December 2018 | −37.8°C17 December 1960 | 27 / 62 |
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 47 years each.
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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.