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Built 2026-11-13 (13 November 2026)

Heat wave in Mongolia, 21 to 27 September 2026

Heat wave in Mongolia, 21 to 27 September 2026: 23 records at 16 stations, peak on 22 September 2026. Closed.

Data as of . Last revised (2026-11-12).

Key Facts

  • Heat wave in Mongolia, 21 to 27 September 2026 set or tied 23 station records at 16 stations.
  • It ran from 21 September 2026 to 27 September 2026 (7 days) and its peak day was 22 September 2026.
  • Status: closed.
  • Hatgal set a daily record high minimum temperature of 2.6 C (36.7 F) on 23 September 2026 (provisional).
  • The busiest day was 22 September 2026 with 10 records.
  • The oldest broken record in the ranked list had stood for 32 years.

Footprint

21 to 27 September 2026
Footprint of Heat wave in Mongolia, 21 to 27 September 2026 The area covered by Heat wave in Mongolia, 21 to 27 September 2026 is outlined, with 16 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in Mongolia, 21 to 27 September 2026 is outlined, with 16 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in Mongolia, 21 to 27 September 2026: stations that set records in the event
StationTypeValueDate
HatgalRecord high minimum temperature2.6 C (36.7 F)2026-09-23
UliastaiRecord high minimum temperature5.6 C (42.1 F)2026-09-21
GaluutRecord high minimum temperature2.2 C (36.0 F)2026-09-27
RinchinlhumbeRecord high minimum temperature3.9 C (39.0 F)2026-09-23
UnderkhaanRecord high minimum temperature6.4 C (43.5 F)2026-09-27
BulganRecord high minimum temperature5.6 C (42.1 F)2026-09-23
BayanhongorRecord high minimum temperature10.5 C (50.9 F)2026-09-22
ArvaiheerRecord high minimum temperature11.1 C (52.0 F)2026-09-21
Saikhan-OvooRecord high minimum temperature8.9 C (48.0 F)2026-09-22
TosontsengelRecord high minimum temperature3.3 C (37.9 F)2026-09-23
MaantiRecord high minimum temperature5.2 C (41.4 F)2026-09-27
Bayan-OvooRecord high minimum temperature7.2 C (45.0 F)2026-09-27
TsetserlegRecord high minimum temperature6.3 C (43.3 F)2026-09-22
TarialanRecord high minimum temperature9.0 C (48.2 F)2026-09-22
HutagRecord high minimum temperature7.6 C (45.7 F)2026-09-21
HujirtRecord high minimum temperature3.0 C (37.4 F)2026-09-23
ErdenemandalRecord high minimum temperature4.3 C (39.7 F)2026-09-23

Records per Day

Peak day 10
Records per day during Heat wave in Mongolia, 21 to 27 September 2026 Records set or tied each day from 21 September 2026 to 27 September 2026. The most in one day was 10 on 22 September 2026. 0 3 5 8 10 09-2209-2309-2409-2509-27
Records set or tied each day from 21 September 2026 to 27 September 2026. The most in one day was 10 on 22 September 2026.
Records per day during Heat wave in Mongolia, 21 to 27 September 2026
DateRecords
2026-09-2210
2026-09-237
2026-09-242
2026-09-251
2026-09-273

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in Mongolia, 21 to 27 September 2026 ranked by margin
Rinchinlhumbe, 09-235.4 C (9.7 F)
Bayanhongor, 09-223.4 C (6.1 F)
Bayan-Ovoo, 09-273.3 C (5.9 F)
Hatgal, 09-232.5 C (4.5 F)
Maanti, 09-272.5 C (4.5 F)
Tosontsengel, 09-232.3 C (4.1 F)
Uliastai, 09-222.0 C (3.6 F)
Tosontsengel, 09-221.7 C (3.1 F)
Underkhaan, 09-271.5 C (2.7 F)
Tsetserleg, 09-221.3 C (2.3 F)
Saikhan-Ovoo, 09-220.9 C (1.6 F)
Bulgan, 09-220.9 C (1.6 F)
Maanti, 09-250.9 C (1.6 F)
Bulgan, 09-230.8 C (1.4 F)
Hutag, 09-230.7 C (1.3 F)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

Margin against age of the broken record in Heat wave in Mongolia, 21 to 27 September 2026 23 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right. 0 10 20 30 40 0.01.53.04.56.0 Margin (C) Years the old record stood
23 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.
Margin against age of the broken record in Heat wave in Mongolia, 21 to 27 September 2026
Margin (C)Years the old record stood
2.532
5.48
1.525
0.828
3.47
2.01
2.38
2.50
3.30
0.920
1.30
0.90
1.70
0.413
0.57
0.95
0.75
0.39
0.37
0.77
0.40
0.73
0.10

Compared With Other Events

Station records per event
Station records in Heat wave in Mongolia, 21 to 27 September 2026 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 20249,869 records
Heat wave in United States, 28 January to 24 February 20266,528 records
Heat wave in United States and Mexico, 24 May to 19 June 20205,047 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Heat wave in Mongolia, 21 to 27 September 2026 (this event)23 records

Every Record Set

31 of 23
Every record set or tied during Heat wave in Mongolia, 21 to 27 September 2026, in date order
DateStationRecordValueMarginYears stoodSignificance
2026-09-21UliastaiRecord high minimum temperature (provisional)5.6 C (42.1 F)0.8 C (1.4 F)3920 of 100 (Routine)
2026-09-21ArvaiheerRecord high minimum temperature (provisional)11.1 C (52.0 F)2.0 C (3.6 F)714 of 100 (Routine)
2026-09-21BulganRecord high minimum temperature (provisional)9.4 C (48.9 F)1.6 C (2.9 F)010 of 100 (Routine)
2026-09-21BayanhongorRecord high minimum temperature (provisional)8.0 C (46.4 F)0.5 C (0.9 F)99 of 100 (Routine)
2026-09-21HutagRecord high minimum temperature (provisional)7.6 C (45.7 F)1.0 C (1.8 F)38 of 100 (Routine)
2026-09-21HujirtRecord high minimum temperature (provisional)8.4 C (47.1 F)0.6 C (1.1 F)07 of 100 (Routine)
2026-09-21ErdenemandalRecord high minimum temperature (provisional)8.3 C (46.9 F)0.7 C (1.3 F)05 of 100 (Routine)
2026-09-22BayanhongorRecord high minimum temperature (provisional)10.5 C (50.9 F)3.4 C (6.1 F)716 of 100 (Routine)
2026-09-22UliastaiRecord high minimum temperature (provisional)5.8 C (42.4 F)2.0 C (3.6 F)112 of 100 (Routine)
2026-09-22Saikhan-OvooRecord high minimum temperature (provisional)8.9 C (48.0 F)0.9 C (1.6 F)2012 of 100 (Routine)
2026-09-22TsetserlegRecord high minimum temperature (provisional)6.3 C (43.3 F)1.3 C (2.3 F)010 of 100 (Routine)
2026-09-22BulganRecord high minimum temperature (provisional)8.3 C (46.9 F)0.9 C (1.6 F)09 of 100 (Routine)
2026-09-22TosontsengelRecord high minimum temperature (provisional)5.2 C (41.4 F)1.7 C (3.1 F)09 of 100 (Routine)
2026-09-22TarialanRecord high minimum temperature (provisional)9.0 C (48.2 F)0.4 C (0.7 F)139 of 100 (Routine)
2026-09-22HutagRecord high minimum temperature (provisional)9.9 C (49.8 F)0.4 C (0.7 F)06 of 100 (Routine)
2026-09-22ErdenemandalRecord high minimum temperature (provisional)5.9 C (42.6 F)0.1 C (0.2 F)04 of 100 (Routine)
2026-09-23HatgalRecord high minimum temperature (provisional)2.6 C (36.7 F)2.5 C (4.5 F)3221 of 100 (Routine)
2026-09-23RinchinlhumbeRecord high minimum temperature (provisional)3.9 C (39.0 F)5.4 C (9.7 F)819 of 100 (Routine)
2026-09-23BulganRecord high minimum temperature (provisional)5.6 C (42.1 F)0.8 C (1.4 F)2816 of 100 (Routine)
2026-09-23TosontsengelRecord high minimum temperature (provisional)3.3 C (37.9 F)2.3 C (4.1 F)812 of 100 (Routine)
2026-09-23HutagRecord high minimum temperature (provisional)5.9 C (42.6 F)0.7 C (1.3 F)58 of 100 (Routine)
2026-09-23HujirtRecord high minimum temperature (provisional)3.0 C (37.4 F)0.3 C (0.5 F)98 of 100 (Routine)
2026-09-23ErdenemandalRecord high minimum temperature (provisional)4.3 C (39.7 F)0.7 C (1.3 F)77 of 100 (Routine)
2026-09-24GaluutRecord high minimum temperature (provisional)3.7 C (38.7 F)0.5 C (0.9 F)79 of 100 (Routine)
2026-09-24TosontsengelRecord high minimum temperature (provisional)2.1 C (35.8 F)0.3 C (0.5 F)77 of 100 (Routine)
2026-09-25MaantiRecord high minimum temperature (provisional)5.4 C (41.7 F)0.9 C (1.6 F)59 of 100 (Routine)
2026-09-27GaluutRecord high minimum temperature (provisional)2.2 C (36.0 F)0.2 C (0.4 F)4720 of 100 (Routine)
2026-09-27UnderkhaanRecord high minimum temperature (provisional)6.4 C (43.5 F)1.5 C (2.7 F)2517 of 100 (Routine)
2026-09-27MaantiRecord high minimum temperature (provisional)5.2 C (41.4 F)2.5 C (4.5 F)012 of 100 (Routine)
2026-09-27Bayan-OvooRecord high minimum temperature (provisional)7.2 C (45.0 F)3.3 C (5.9 F)012 of 100 (Routine)
2026-09-27BayanhongorRecord high minimum temperature (provisional)5.4 C (41.7 F)0.1 C (0.2 F)06 of 100 (Routine)

Download the Data

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-11-12. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.