Heat wave in Russia and 4 other countries, 14 to 30 October 2021

Name: Heat wave in Russia and 4 other countries, 14 to 30 October 2021
Start: 2021-10-14
End: 2021-10-30
Location: Russia, Mongolia, Kazakhstan, China, Japan

Heat wave in Russia and 4 other countries, 14 to 30 October 2021: 375 records at 187 stations, peak on 24 October 2021. Closed.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Key Facts

Heat wave in Russia and 4 other countries, 14 to 30 October 2021 set or tied 375 station records at 187 stations.
It ran from 14 October 2021 to 30 October 2021 (17 days) and its peak day was 24 October 2021.
Status: closed.
Irkutsk set a daily record high maximum temperature of 17.3 C (63.1 F) on 27 October 2021.
The busiest day was 24 October 2021 with 57 records.
The oldest broken record in the ranked list had stood for 126 years.

Footprint

14 to 30 October 2021

The area covered by Heat wave in Russia and 4 other countries, 14 to 30 October 2021 is outlined, with 17 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Heat wave in Russia and 4 other countries, 14 to 30 October 2021: stations that set records in the event
Station	Type	Value	Date
Irkutsk	Record high maximum temperature	17.3 C (63.1 F)	2021-10-27
Dzhikimda	Record high maximum temperature	12.8 C (55.0 F)	2021-10-22
Chara	Record high maximum temperature	10.7 C (51.3 F)	2021-10-23
Olekminsk	Record high maximum temperature	8.2 C (46.8 F)	2021-10-23
Ust-Njukzha	Record high maximum temperature	10.5 C (50.9 F)	2021-10-22
Bomnak	Record high maximum temperature	10.6 C (51.1 F)	2021-10-23
Vitim	Record high maximum temperature	10.0 C (50.0 F)	2021-10-22
Tatarsk	Record high minimum temperature	5.3 C (41.5 F)	2021-10-24
Karasuk	Record high minimum temperature	7.9 C (46.2 F)	2021-10-24
Pudino	Record high minimum temperature	5.2 C (41.4 F)	2021-10-24
Balagansk	Record high maximum temperature	13.4 C (56.1 F)	2021-10-26
Novy-Port	Record high maximum temperature	4.5 C (40.1 F)	2021-10-17
Vanavara	Record high maximum temperature	11.3 C (52.3 F)	2021-10-21
Erofej Pavlovic	Record high maximum temperature	11.5 C (52.7 F)	2021-10-22
Amga	Record high minimum temperature	-3.6 C (25.5 F)	2021-10-21
Zdvinsk	Record high minimum temperature	6.5 C (43.7 F)	2021-10-24
Masljanino	Record high minimum temperature	3.7 C (38.7 F)	2021-10-24

Records per Day

Peak day 57

Records set or tied each day from 14 October 2021 to 30 October 2021. The most in one day was 57 on 24 October 2021.

Records per day during Heat wave in Russia and 4 other countries, 14 to 30 October 2021
Date	Records
2021-10-14	1
2021-10-15	2
2021-10-16	2
2021-10-17	11
2021-10-18	6
2021-10-19	10
2021-10-20	17
2021-10-21	23
2021-10-22	39
2021-10-23	41
2021-10-24	57
2021-10-25	48
2021-10-26	48
2021-10-27	33
2021-10-28	22
2021-10-29	11
2021-10-30	4

Top Records by Margin

Margin over the record replaced

Top records of Heat wave in Russia and 4 other countries, 14 to 30 October 2021 ranked by margin
Dzhikimda, 10-22	7.2 C (13.0 F)
Karasuk, 10-24	6.8 C (12.2 F)
Chara, 10-23	6.0 C (10.8 F)
Zdvinsk, 10-24	5.4 C (9.7 F)
Irkutsk, 10-27	4.9 C (8.8 F)
Ust-Njukzha, 10-22	4.6 C (8.3 F)
Amga, 10-21	4.2 C (7.6 F)
Bomnak, 10-23	3.2 C (5.8 F)
Ust-Njukzha, 10-23	3.2 C (5.8 F)
Vanavara, 10-21	2.8 C (5.0 F)
Chara, 10-22	2.6 C (4.7 F)
Erofej Pavlovic, 10-22	2.6 C (4.7 F)
Masljanino, 10-24	2.6 C (4.7 F)
Olekminsk, 10-23	2.1 C (3.8 F)
Balagansk, 10-26	2.0 C (3.6 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

375 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 Russia and 4 other countries, 14 to 30 October 2021
Margin (C)	Years the old record stood
4.9	126
7.2	75
6.0	74
2.1	84
4.6	75
3.2	75
0.5	88
0.5	88
6.8	52
0.5	90
0.1	88
2.0	80
3.2	72
1.3	78
2.8	67
2.6	72
2.6	72
4.2	70
5.4	52
2.6	68
4.9	50
1.4	75
1.1	74
2.7	70
0.7	75
1.7	68
0.9	75
2.3	67
3.0	59
0.5	74
0.4	74
0.8	74
0.3	74
1.5	67
4.8	60
0.6	74
2.2	70
3.1	59
4.2	59
5.0	56
1.6	71
0.4	67
1.5	68
1.3	66
0.4	70
1.4	70
2.0	66
1.0	67
2.6	50
0.7	72
0.8	67
0.6	67
1.2	67
1.2	64
0.1	66
1.3	59
4.5	42
2.0	66
0.1	71
0.5	71
3.5	52
0.1	68
1.5	62
7.1	34
0.9	58
1.1	66
1.8	58
3.2	51
0.5	67
0.3	67
1.7	59
2.6	56
3.2	59
2.1	59
0.9	66
0.2	67
0.8	58
1.5	58
0.9	58
0.9	64
2.3	59
0.4	66
0.9	59
1.4	59
0.8	59
0.7	59
2.5	52
0.9	66
0.1	63
1.0	52
0.8	58
0.4	58
0.9	56
1.0	50
0.7	54
3.1	42
0.5	66
0.3	59
0.7	54
0.6	59
0.1	59
1.3	50
1.1	59
0.4	59
1.5	52
0.9	54
1.7	59
1.3	59
7.7	32
1.0	54
1.7	59
0.2	66
2.0	54
0.2	54
0.5	59
0.7	59
0.4	54
0.2	54
0.3	59
0.7	50
0.9	50
0.3	52
1.2	59
0.9	55
0.2	58
0.6	50
0.1	50
0.4	59
0.5	54
0.5	52
0.5	58
0.7	52
3.8	28
3.0	39
2.3	42
2.0	36
2.2	39
0.2	55
2.1	44
0.3	52
0.1	52
2.5	30
3.1	30
0.6	50
3.1	38
0.3	50
1.4	40
5.1	31
1.7	30
0.7	36
1.3	40
0.5	40
1.3	27
1.6	36
4.3	28
6.2	26
2.5	27
3.3	24
3.2	26
3.3	26
2.8	32
2.4	27
3.5	27
1.7	31
1.3	36
1.8	27
3.7	27
4.2	27
2.7	26
1.0	43
1.9	30
1.3	34
3.0	27
2.7	26
3.8	26
2.1	27
1.9	27
4.9	10
1.9	30
1.7	32
2.5	28
2.7	28
2.5	27
3.5	15
1.7	31
0.6	39
1.9	36
0.1	36
0.1	34
2.2	32
0.3	35
1.1	35
1.4	27
0.7	32
1.7	28
1.9	31
3.6	28
0.2	40
1.9	27
1.0	38

Compared With Other Events

Station records per event

Station records in Heat wave in Russia and 4 other countries, 14 to 30 October 2021 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 2024	9,869 records
Heat wave in United States, 28 January to 24 February 2026	6,528 records
Heat wave in United States and Mexico, 24 May to 19 June 2020	5,047 records
Heat wave in United States and Mexico, 26 March to 17 April 2021	3,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 2022	3,626 records
Heat wave in Russia and 4 other countries, 14 to 30 October 2021 (this event)	375 records

Every Record Set

20 of 375

Every record set or tied during Heat wave in Russia and 4 other countries, 14 to 30 October 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-10-17	Novy-Port	Record high maximum temperature	4.5 C (40.1 F)	1.3 C (2.3 F)	78	33 of 100 (Routine)
2021-10-21	Vanavara	Record high maximum temperature	11.3 C (52.3 F)	2.8 C (5.0 F)	67	33 of 100 (Routine)
2021-10-21	Amga	Record high minimum temperature	-3.6 C (25.5 F)	4.2 C (7.6 F)	70	32 of 100 (Routine)
2021-10-22	Dzhikimda	Record high maximum temperature	12.8 C (55.0 F)	7.2 C (13.0 F)	75	41 of 100 (Notable)
2021-10-22	Ust-Njukzha	Record high maximum temperature	10.5 C (50.9 F)	4.6 C (8.3 F)	75	37 of 100 (Notable)
2021-10-22	Vitim	Record high maximum temperature	10.0 C (50.0 F)	0.5 C (0.9 F)	90	36 of 100 (Notable)
2021-10-22	Chara	Record high maximum temperature	10.1 C (50.2 F)	2.6 C (4.7 F)	72	33 of 100 (Routine)
2021-10-22	Erofej Pavlovic	Record high maximum temperature	11.5 C (52.7 F)	2.6 C (4.7 F)	72	33 of 100 (Routine)
2021-10-23	Chara	Record high maximum temperature	10.7 C (51.3 F)	6.0 C (10.8 F)	74	39 of 100 (Notable)
2021-10-23	Olekminsk	Record high maximum temperature	8.2 C (46.8 F)	2.1 C (3.8 F)	84	38 of 100 (Notable)
2021-10-23	Bomnak	Record high maximum temperature	10.6 C (51.1 F)	3.2 C (5.8 F)	75	37 of 100 (Notable)
2021-10-23	Ust-Njukzha	Record high maximum temperature	8.2 C (46.8 F)	3.2 C (5.8 F)	72	34 of 100 (Routine)
2021-10-24	Tatarsk	Record high minimum temperature	5.3 C (41.5 F)	0.5 C (0.9 F)	88	36 of 100 (Notable)
2021-10-24	Karasuk	Record high minimum temperature	7.9 C (46.2 F)	6.8 C (12.2 F)	52	36 of 100 (Notable)
2021-10-24	Pudino	Record high minimum temperature	5.2 C (41.4 F)	0.1 C (0.2 F)	88	35 of 100 (Notable)
2021-10-24	Zdvinsk	Record high minimum temperature	6.5 C (43.7 F)	5.4 C (9.7 F)	52	32 of 100 (Routine)
2021-10-24	Masljanino	Record high minimum temperature	3.7 C (38.7 F)	2.6 C (4.7 F)	68	32 of 100 (Routine)
2021-10-25	Olekminsk	Record high minimum temperature	0.7 C (33.3 F)	0.5 C (0.9 F)	88	36 of 100 (Notable)
2021-10-26	Balagansk	Record high maximum temperature	13.4 C (56.1 F)	2.0 C (3.6 F)	80	35 of 100 (Notable)
2021-10-27	Irkutsk	Record high maximum temperature	17.3 C (63.1 F)	4.9 C (8.8 F)	126	48 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 375 records the event counts. The counts above use the full total.

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 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.

Margin (C)	Years the old record stood
4.9	126
7.2	75
6.0	74
2.1	84
4.6	75
3.2	75
0.5	88
0.5	88
6.8	52
0.5	90
0.1	88
2.0	80
3.2	72
1.3	78
2.8	67
2.6	72
2.6	72
4.2	70
5.4	52
2.6	68
4.9	50
1.4	75
1.1	74
2.7	70
0.7	75
1.7	68
0.9	75
2.3	67
3.0	59
0.5	74
0.4	74
0.8	74
0.3	74
1.5	67
4.8	60
0.6	74
2.2	70
3.1	59
4.2	59
5.0	56
1.6	71
0.4	67
1.5	68
1.3	66
0.4	70
1.4	70
2.0	66
1.0	67
2.6	50
0.7	72
0.8	67
0.6	67
1.2	67
1.2	64
0.1	66
1.3	59
4.5	42
2.0	66
0.1	71
0.5	71
3.5	52
0.1	68
1.5	62
7.1	34
0.9	58
1.1	66
1.8	58
3.2	51
0.5	67
0.3	67
1.7	59
2.6	56
3.2	59
2.1	59
0.9	66
0.2	67
0.8	58
1.5	58
0.9	58
0.9	64
2.3	59
0.4	66
0.9	59
1.4	59
0.8	59
0.7	59
2.5	52
0.9	66
0.1	63
1.0	52
0.8	58
0.4	58
0.9	56
1.0	50
0.7	54
3.1	42
0.5	66
0.3	59
0.7	54
0.6	59
0.1	59
1.3	50
1.1	59
0.4	59
1.5	52
0.9	54
1.7	59
1.3	59
7.7	32
1.0	54
1.7	59
0.2	66
2.0	54
0.2	54
0.5	59
0.7	59
0.4	54
0.2	54
0.3	59
0.7	50
0.9	50
0.3	52
1.2	59
0.9	55
0.2	58
0.6	50
0.1	50
0.4	59
0.5	54
0.5	52
0.5	58
0.7	52
3.8	28
3.0	39
2.3	42
2.0	36
2.2	39
0.2	55
2.1	44
0.3	52
0.1	52
2.5	30
3.1	30
0.6	50
3.1	38
0.3	50
1.4	40
5.1	31
1.7	30
0.7	36
1.3	40
0.5	40
1.3	27
1.6	36
4.3	28
6.2	26
2.5	27
3.3	24
3.2	26
3.3	26
2.8	32
2.4	27
3.5	27
1.7	31
1.3	36
1.8	27
3.7	27
4.2	27
2.7	26
1.0	43
1.9	30
1.3	34
3.0	27
2.7	26
3.8	26
2.1	27
1.9	27
4.9	10
1.9	30
1.7	32
2.5	28
2.7	28
2.5	27
3.5	15
1.7	31
0.6	39
1.9	36
0.1	36
0.1	34
2.2	32
0.3	35
1.1	35
1.4	27
0.7	32
1.7	28
1.9	31
3.6	28
0.2	40
1.9	27
1.0	38

Margin (C)	Years the old record stood
4.9	126
7.2	75
6.0	74
2.1	84
4.6	75
3.2	75
0.5	88
0.5	88
6.8	52
0.5	90
0.1	88
2.0	80
3.2	72
1.3	78
2.8	67
2.6	72
2.6	72
4.2	70
5.4	52
2.6	68
4.9	50
1.4	75
1.1	74
2.7	70
0.7	75
1.7	68
0.9	75
2.3	67
3.0	59
0.5	74
0.4	74
0.8	74
0.3	74
1.5	67
4.8	60
0.6	74
2.2	70
3.1	59
4.2	59
5.0	56
1.6	71
0.4	67
1.5	68
1.3	66
0.4	70
1.4	70
2.0	66
1.0	67
2.6	50
0.7	72
0.8	67
0.6	67
1.2	67
1.2	64
0.1	66
1.3	59
4.5	42
2.0	66
0.1	71
0.5	71
3.5	52
0.1	68
1.5	62
7.1	34
0.9	58
1.1	66
1.8	58
3.2	51
0.5	67
0.3	67
1.7	59
2.6	56
3.2	59
2.1	59
0.9	66
0.2	67
0.8	58
1.5	58
0.9	58
0.9	64
2.3	59
0.4	66
0.9	59
1.4	59
0.8	59
0.7	59
2.5	52
0.9	66
0.1	63
1.0	52
0.8	58
0.4	58
0.9	56
1.0	50
0.7	54
3.1	42
0.5	66
0.3	59
0.7	54
0.6	59
0.1	59
1.3	50
1.1	59
0.4	59
1.5	52
0.9	54
1.7	59
1.3	59
7.7	32
1.0	54
1.7	59
0.2	66
2.0	54
0.2	54
0.5	59
0.7	59
0.4	54
0.2	54
0.3	59
0.7	50
0.9	50
0.3	52
1.2	59
0.9	55
0.2	58
0.6	50
0.1	50
0.4	59
0.5	54
0.5	52
0.5	58
0.7	52
3.8	28
3.0	39
2.3	42
2.0	36
2.2	39
0.2	55
2.1	44
0.3	52
0.1	52
2.5	30
3.1	30
0.6	50
3.1	38
0.3	50
1.4	40
5.1	31
1.7	30
0.7	36
1.3	40
0.5	40
1.3	27
1.6	36
4.3	28
6.2	26
2.5	27
3.3	24
3.2	26
3.3	26
2.8	32
2.4	27
3.5	27
1.7	31
1.3	36
1.8	27
3.7	27
4.2	27
2.7	26
1.0	43
1.9	30
1.3	34
3.0	27
2.7	26
3.8	26
2.1	27
1.9	27
4.9	10
1.9	30
1.7	32
2.5	28
2.7	28
2.5	27
3.5	15
1.7	31
0.6	39
1.9	36
0.1	36
0.1	34
2.2	32
0.3	35
1.1	35
1.4	27
0.7	32
1.7	28
1.9	31
3.6	28
0.2	40
1.9	27
1.0	38