Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021

Name: Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021
Start: 2021-05-17
End: 2021-05-27
Location: Russia, Mongolia, China, Kazakhstan

Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021: 126 records at 93 stations, peak on 22 May 2021. Closed.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Key Facts

Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021 set or tied 126 station records at 93 stations.
It ran from 17 May 2021 to 27 May 2021 (11 days) and its peak day was 22 May 2021.
Status: closed.
Kirensk set a daily record low minimum temperature of -4.9 C (23.2 F) on 19 May 2021.
The busiest day was 22 May 2021 with 34 records.
The oldest broken record in the ranked list had stood for 116 years.

Footprint

17 to 27 May 2021

The area covered by Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021 is outlined, with 16 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021: stations that set records in the event
Station	Type	Value	Date
Kirensk	Record low minimum temperature	-4.9 C (23.2 F)	2021-05-19
Dzalinda	Record low maximum temperature	5.3 C (41.5 F)	2021-05-23
Sretensk	Record low maximum temperature	5.2 C (41.4 F)	2021-05-22
Nerchinskij Zavod	Record low maximum temperature	7.0 C (44.6 F)	2021-05-24
Vanavara	Record low minimum temperature	-9.2 C (15.4 F)	2021-05-17
Kosch-Agach	Record low maximum temperature	2.3 C (36.1 F)	2021-05-21
Njurba	Record low minimum temperature	-8.5 C (16.7 F)	2021-05-19
Hilok	Record low maximum temperature	3.8 C (38.8 F)	2021-05-22
Viljujsk	Record low minimum temperature	-7.2 C (19.0 F)	2021-05-19
Selagoncy	Record low maximum temperature	-4.4 C (24.1 F)	2021-05-17
Bomnak	Record low maximum temperature	3.0 C (37.4 F)	2021-05-24
Lensk	Record low maximum temperature	1.9 C (35.4 F)	2021-05-18
Verhnjaja Gutara	Record low maximum temperature	3.5 C (38.3 F)	2021-05-20
Mogoca	Record low maximum temperature	1.6 C (34.9 F)	2021-05-21
Erzin	Record low maximum temperature	3.9 C (39.0 F)	2021-05-21
Urjupino	Record low maximum temperature	6.9 C (44.4 F)	2021-05-24

Records per Day

Peak day 34

Records set or tied each day from 17 May 2021 to 27 May 2021. The most in one day was 34 on 22 May 2021.

Records per day during Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021
Date	Records
2021-05-17	5
2021-05-18	7
2021-05-19	10
2021-05-20	1
2021-05-21	24
2021-05-22	34
2021-05-23	24
2021-05-24	17
2021-05-25	2
2021-05-26	1
2021-05-27	1

Top Records by Margin

Margin over the record replaced

Top records of Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021 ranked by margin
Bomnak, 05-24	5.9 C (10.6 F)
Dzalinda, 05-23	5.3 C (9.5 F)
Urjupino, 05-24	5.1 C (9.2 F)
Sretensk, 05-22	4.8 C (8.6 F)
Sretensk, 05-23	4.3 C (7.7 F)
Nerchinskij Zavod, 05-24	4.1 C (7.4 F)
Hilok, 05-22	2.9 C (5.2 F)
Selagoncy, 05-17	2.5 C (4.5 F)
Njurba, 05-19	2.4 C (4.3 F)
Kirensk, 05-18	2.1 C (3.8 F)
Viljujsk, 05-19	1.9 C (3.4 F)
Erzin, 05-21	1.7 C (3.1 F)
Vanavara, 05-19	1.5 C (2.7 F)
Kosch-Agach, 05-21	1.0 C (1.8 F)
Lensk, 05-18	0.9 C (1.6 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

126 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 Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021
Margin (C)	Years the old record stood
0.4	116
5.3	72
4.8	72
4.1	67
4.3	68
0.8	82
1.0	86
2.4	72
2.9	72
1.9	64
0.3	75
2.5	64
5.9	36
0.9	67
0.5	72
2.1	48
0.7	63
5.1	47
1.7	68
1.5	59
0.8	68
0.6	68
0.2	67
0.3	68
0.3	67
0.8	64
1.9	55
0.2	68
5.1	30
0.1	64
1.0	59
1.7	58
2.2	47
2.9	47
1.7	43
0.4	52
1.0	51
2.0	44
1.7	31
2.4	43
0.9	47
4.3	28
0.2	51
0.6	50
1.5	44
6.0	8
1.8	38
1.3	42
0.5	52
0.2	50
1.4	36
0.3	48
0.4	47
0.1	50
1.8	40
1.4	40
1.7	36
2.0	28
2.4	32
3.6	30
1.0	31
1.1	30
0.1	43
1.8	28
1.9	30
3.8	32
1.3	32
3.7	23
2.8	34
1.3	28
1.6	23
2.0	23
2.6	30
0.3	28
4.2	4
0.8	28
0.2	32
4.7	4
3.0	23
1.8	23
2.1	23
1.0	23
0.5	20
1.5	23
1.5	32
2.5	4
2.7	4
2.2	15
1.1	23
0.2	26
0.7	22
0.1	23
0.2	24
3.8	3
0.3	20
0.5	20
0.2	23
0.6	22
0.4	20
1.9	23
0.8	22
0.3	23
2.1	8
3.2	3
2.0	8
5.1	3
2.2	4
0.8	15
1.0	15
2.2	3
2.6	3
0.7	3
0.8	11
2.2	4
0.1	15
0.2	23
2.1	3
0.6	8
0.1	15
0.2	8
1.0	8
0.6	4
0.1	4
0.7	2
1.0	4
0.1	4

Compared With Other Events

Station records per event

Station records in Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021 compared with similar events
Cold outbreak in United States and Mexico, 6 February to 5 March 2021	12,118 records
Cold outbreak in United States and Mexico, 13 October to 5 November 2020	9,841 records
Cold outbreak in United States and Mexico, 23 December 2017 to 8 January 2018	8,263 records
Cold outbreak in United States and Mexico, 3 to 23 January 2024	7,675 records
Cold outbreak in United States, 15 January to 10 February 2026	5,568 records
Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021 (this event)	126 records

Every Record Set

20 of 126

Every record set or tied during Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-05-17	Vanavara	Record low minimum temperature	-9.2 C (15.4 F)	0.8 C (1.4 F)	82	34 of 100 (Routine)
2021-05-17	Selagoncy	Record low maximum temperature	-4.4 C (24.1 F)	2.5 C (4.5 F)	64	31 of 100 (Routine)
2021-05-18	Lensk	Record low maximum temperature	1.9 C (35.4 F)	0.9 C (1.6 F)	67	29 of 100 (Routine)
2021-05-18	Kirensk	Record low minimum temperature	-7.1 C (19.2 F)	2.1 C (3.8 F)	48	29 of 100 (Routine)
2021-05-19	Kirensk	Record low minimum temperature	-4.9 C (23.2 F)	0.4 C (0.7 F)	116	40 of 100 (Notable)
2021-05-19	Njurba	Record low minimum temperature	-8.5 C (16.7 F)	2.4 C (4.3 F)	72	33 of 100 (Routine)
2021-05-19	Viljujsk	Record low minimum temperature	-7.2 C (19.0 F)	1.9 C (3.4 F)	64	32 of 100 (Routine)
2021-05-19	Kirensk	Record low maximum temperature	5.1 C (41.2 F)	0.3 C (0.5 F)	75	32 of 100 (Routine)
2021-05-19	Vanavara	Record low maximum temperature	2.4 C (36.3 F)	1.5 C (2.7 F)	59	28 of 100 (Routine)
2021-05-20	Verhnjaja Gutara	Record low maximum temperature	3.5 C (38.3 F)	0.5 C (0.9 F)	72	29 of 100 (Routine)
2021-05-21	Kosch-Agach	Record low maximum temperature	2.3 C (36.1 F)	1.0 C (1.8 F)	86	34 of 100 (Routine)
2021-05-21	Mogoca	Record low maximum temperature	1.6 C (34.9 F)	0.7 C (1.3 F)	63	29 of 100 (Routine)
2021-05-21	Erzin	Record low maximum temperature	3.9 C (39.0 F)	1.7 C (3.1 F)	68	29 of 100 (Routine)
2021-05-22	Sretensk	Record low maximum temperature	5.2 C (41.4 F)	4.8 C (8.6 F)	72	37 of 100 (Notable)
2021-05-22	Hilok	Record low maximum temperature	3.8 C (38.8 F)	2.9 C (5.2 F)	72	33 of 100 (Routine)
2021-05-23	Dzalinda	Record low maximum temperature	5.3 C (41.5 F)	5.3 C (9.5 F)	72	38 of 100 (Notable)
2021-05-23	Sretensk	Record low maximum temperature	5.3 C (41.5 F)	4.3 C (7.7 F)	68	35 of 100 (Notable)
2021-05-24	Nerchinskij Zavod	Record low maximum temperature	7.0 C (44.6 F)	4.1 C (7.4 F)	67	36 of 100 (Notable)
2021-05-24	Bomnak	Record low maximum temperature	3.0 C (37.4 F)	5.9 C (10.6 F)	36	30 of 100 (Routine)
2021-05-24	Urjupino	Record low maximum temperature	6.9 C (44.4 F)	5.1 C (9.2 F)	47	29 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 126 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 2026-10-12. 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
0.4	116
5.3	72
4.8	72
4.1	67
4.3	68
0.8	82
1.0	86
2.4	72
2.9	72
1.9	64
0.3	75
2.5	64
5.9	36
0.9	67
0.5	72
2.1	48
0.7	63
5.1	47
1.7	68
1.5	59
0.8	68
0.6	68
0.2	67
0.3	68
0.3	67
0.8	64
1.9	55
0.2	68
5.1	30
0.1	64
1.0	59
1.7	58
2.2	47
2.9	47
1.7	43
0.4	52
1.0	51
2.0	44
1.7	31
2.4	43
0.9	47
4.3	28
0.2	51
0.6	50
1.5	44
6.0	8
1.8	38
1.3	42
0.5	52
0.2	50
1.4	36
0.3	48
0.4	47
0.1	50
1.8	40
1.4	40
1.7	36
2.0	28
2.4	32
3.6	30
1.0	31
1.1	30
0.1	43
1.8	28
1.9	30
3.8	32
1.3	32
3.7	23
2.8	34
1.3	28
1.6	23
2.0	23
2.6	30
0.3	28
4.2	4
0.8	28
0.2	32
4.7	4
3.0	23
1.8	23
2.1	23
1.0	23
0.5	20
1.5	23
1.5	32
2.5	4
2.7	4
2.2	15
1.1	23
0.2	26
0.7	22
0.1	23
0.2	24
3.8	3
0.3	20
0.5	20
0.2	23
0.6	22
0.4	20
1.9	23
0.8	22
0.3	23
2.1	8
3.2	3
2.0	8
5.1	3
2.2	4
0.8	15
1.0	15
2.2	3
2.6	3
0.7	3
0.8	11
2.2	4
0.1	15
0.2	23
2.1	3
0.6	8
0.1	15
0.2	8
1.0	8
0.6	4
0.1	4
0.7	2
1.0	4
0.1	4

Margin (C)	Years the old record stood
0.4	116
5.3	72
4.8	72
4.1	67
4.3	68
0.8	82
1.0	86
2.4	72
2.9	72
1.9	64
0.3	75
2.5	64
5.9	36
0.9	67
0.5	72
2.1	48
0.7	63
5.1	47
1.7	68
1.5	59
0.8	68
0.6	68
0.2	67
0.3	68
0.3	67
0.8	64
1.9	55
0.2	68
5.1	30
0.1	64
1.0	59
1.7	58
2.2	47
2.9	47
1.7	43
0.4	52
1.0	51
2.0	44
1.7	31
2.4	43
0.9	47
4.3	28
0.2	51
0.6	50
1.5	44
6.0	8
1.8	38
1.3	42
0.5	52
0.2	50
1.4	36
0.3	48
0.4	47
0.1	50
1.8	40
1.4	40
1.7	36
2.0	28
2.4	32
3.6	30
1.0	31
1.1	30
0.1	43
1.8	28
1.9	30
3.8	32
1.3	32
3.7	23
2.8	34
1.3	28
1.6	23
2.0	23
2.6	30
0.3	28
4.2	4
0.8	28
0.2	32
4.7	4
3.0	23
1.8	23
2.1	23
1.0	23
0.5	20
1.5	23
1.5	32
2.5	4
2.7	4
2.2	15
1.1	23
0.2	26
0.7	22
0.1	23
0.2	24
3.8	3
0.3	20
0.5	20
0.2	23
0.6	22
0.4	20
1.9	23
0.8	22
0.3	23
2.1	8
3.2	3
2.0	8
5.1	3
2.2	4
0.8	15
1.0	15
2.2	3
2.6	3
0.7	3
0.8	11
2.2	4
0.1	15
0.2	23
2.1	3
0.6	8
0.1	15
0.2	8
1.0	8
0.6	4
0.1	4
0.7	2
1.0	4
0.1	4