Cold outbreak in United States, 15 November to 1 December 2021

Name: Cold outbreak in United States, 15 November to 1 December 2021
Start: 2021-11-15
End: 2021-12-01
Location: United States

Cold outbreak in United States, 15 November to 1 December 2021: 146 records at 35 stations, peak on 19 November 2021. Closed.

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

Key Facts

Cold outbreak in United States, 15 November to 1 December 2021 set or tied 146 station records at 35 stations.
It ran from 15 November 2021 to 1 December 2021 (17 days) and its peak day was 19 November 2021.
Status: closed.
Seward AP set a daily record low minimum temperature of -13.2 C (8.2 F) on 18 November 2021.
The busiest day was 18 November 2021 with 23 records.
The oldest broken record in the ranked list had stood for 99 years.

Footprint

15 November to 1 December 2021

The area covered by Cold outbreak in United States, 15 November to 1 December 2021 is outlined, with 10 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Cold outbreak in United States, 15 November to 1 December 2021: stations that set records in the event
Station	Type	Value	Date
Seward AP	Record low minimum temperature	-13.2 C (8.2 F)	2021-11-18
Iliamna AP	Record low maximum temperature	-23.2 C (-9.8 F)	2021-11-28
Bethel AP	Record low minimum temperature	-33.2 C (-27.8 F)	2021-11-28
Matanuska Exp Farm	Record low maximum temperature	-17.2 C (1.0 F)	2021-11-20
Puntilla	Record low maximum temperature	-25.6 C (-14.1 F)	2021-11-28
Homer AP	Record low maximum temperature	-7.7 C (18.1 F)	2021-11-19
Moose Pass 3NW	Record low minimum temperature	-25.6 C (-14.1 F)	2021-11-26
Anchorage Merrill Fld	Record low maximum temperature	-13.8 C (7.2 F)	2021-11-22
King Salmon	Record low minimum temperature	-33.2 C (-27.8 F)	2021-11-28
Talkeetna AP	Record low maximum temperature	-19.9 C (-3.8 F)	2021-11-22

Records per Day

Peak day 23

Records set or tied each day from 15 November 2021 to 1 December 2021. The most in one day was 23 on 18 November 2021.

Records per day during Cold outbreak in United States, 15 November to 1 December 2021
Date	Records
2021-11-15	1
2021-11-17	4
2021-11-18	23
2021-11-19	23
2021-11-20	11
2021-11-21	17
2021-11-22	9
2021-11-23	5
2021-11-24	2
2021-11-25	4
2021-11-26	5
2021-11-27	12
2021-11-28	20
2021-11-29	8
2021-11-30	1
2021-12-01	1

Top Records by Margin

Margin over the record replaced

Top records of Cold outbreak in United States, 15 November to 1 December 2021 ranked by margin
King Salmon, 11-28	6.0 C (10.8 F)
Moose Pass 3NW, 11-20	4.5 C (8.1 F)
Iliamna AP, 11-28	4.3 C (7.7 F)
Puntilla, 11-28	3.4 C (6.1 F)
Iliamna AP, 11-27	2.7 C (4.9 F)
Moose Pass 3NW, 11-26	2.3 C (4.1 F)
Matanuska Exp Farm, 11-20	2.2 C (4.0 F)
Iliamna AP, 11-28	2.1 C (3.8 F)
King Salmon, 11-28	2.1 C (3.8 F)
Bethel AP, 11-18	1.6 C (2.9 F)
Homer AP, 11-19	1.6 C (2.9 F)
Anchorage Merrill Fld, 11-22	1.6 C (2.9 F)
Puntilla, 11-21	1.1 C (2.0 F)
Puntilla, 11-22	1.1 C (2.0 F)
Seward AP, 11-18	1.0 C (1.8 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

146 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 United States, 15 November to 1 December 2021
Margin (C)	Years the old record stood
1.0	99
0.5	99
4.3	76
0.4	94
2.2	79
3.4	79
1.6	84
1.6	79
2.3	79
2.1	76
1.6	72
1.1	79
6.0	58
1.0	71
2.7	58
0.4	71
1.1	72
1.0	60
4.5	47
2.1	58
6.1	36
1.0	60
0.4	58
2.2	58
1.0	58
0.5	58
3.3	50
3.2	38
1.0	47
0.5	50
0.4	54
0.5	52
1.6	50
0.5	50
1.0	46
2.2	35
1.1	39
0.6	48
1.6	8
1.1	52
3.3	31
1.1	40
4.4	31
0.6	31
1.6	31
8.2	16
3.3	10
2.8	26
2.2	28
0.5	39
4.7	26
2.7	31
3.9	18
3.4	12
3.2	31
2.7	31
2.8	10
1.7	10
0.6	39
0.5	31
0.5	39
4.4	10
3.3	27
2.6	32
4.9	12
1.7	10
2.2	12
1.2	35
0.5	31
0.6	31
0.5	31
1.7	31
0.5	31
1.7	27
0.4	35
1.1	10
0.4	15
1.1	31
0.6	31
1.1	31
0.5	28
0.2	31
1.0	16
1.6	16
0.4	12
0.4	15
0.4	10
0.5	31
1.7	18
1.1	10
0.1	30
0.3	31
0.9	27
2.6	18
1.1	26
0.1	31
0.2	31
0.1	27
1.0	10
0.4	16
0.6	8
2.8	8
1.6	16
1.1	8
5.0	8
2.2	10
0.5	23
4.6	4
3.0	8
2.2	10
0.4	16
1.1	10
0.5	18
1.4	18
1.2	18
2.1	10
1.1	10
1.7	8
3.4	8
1.1	10
1.1	8
0.5	18
1.9	12
0.6	10
0.6	10
1.6	12
1.1	8
1.4	10
0.7	10
1.1	6
1.1	6
1.1	10
1.1	10
1.1	10
0.6	8
0.2	16
0.9	10
0.7	10
0.5	12
0.5	10
0.6	8
1.6	6
1.1	8
1.7	4
0.1	12
0.5	8

Compared With Other Events

Station records per event

Station records in Cold outbreak in United States, 15 November to 1 December 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 United States, 15 November to 1 December 2021 (this event)	146 records

Every Record Set

20 of 146

Every record set or tied during Cold outbreak in United States, 15 November to 1 December 2021, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2021-11-18	Seward AP	Record low minimum temperature	-13.2 C (8.2 F)	1.0 C (1.8 F)	99	41 of 100 (Notable)
2021-11-18	Bethel AP	Record low minimum temperature	-26.0 C (-14.8 F)	1.6 C (2.9 F)	84	36 of 100 (Notable)
2021-11-18	Anchorage Merrill Fld	Record low minimum temperature	-23.8 C (-10.8 F)	1.0 C (1.8 F)	71	32 of 100 (Routine)
2021-11-19	Seward AP	Record low maximum temperature	-10.5 C (13.1 F)	0.5 C (0.9 F)	99	40 of 100 (Notable)
2021-11-19	Homer AP	Record low maximum temperature	-7.7 C (18.1 F)	1.6 C (2.9 F)	79	35 of 100 (Notable)
2021-11-20	Matanuska Exp Farm	Record low maximum temperature	-17.2 C (1.0 F)	2.2 C (4.0 F)	79	36 of 100 (Notable)
2021-11-20	Moose Pass 3NW	Record low minimum temperature	-26.7 C (-16.1 F)	4.5 C (8.1 F)	47	28 of 100 (Routine)
2021-11-21	Puntilla	Record low maximum temperature	-23.3 C (-9.9 F)	1.1 C (2.0 F)	79	32 of 100 (Routine)
2021-11-22	Anchorage Merrill Fld	Record low maximum temperature	-13.8 C (7.2 F)	1.6 C (2.9 F)	72	33 of 100 (Routine)
2021-11-22	Anchorage Merrill Fld	Record low minimum temperature	-24.3 C (-11.7 F)	0.4 C (0.7 F)	71	31 of 100 (Routine)
2021-11-22	Puntilla	Record low maximum temperature	-21.7 C (-7.1 F)	1.1 C (2.0 F)	72	30 of 100 (Routine)
2021-11-22	Talkeetna AP	Record low maximum temperature	-19.9 C (-3.8 F)	1.0 C (1.8 F)	60	29 of 100 (Routine)
2021-11-26	Moose Pass 3NW	Record low minimum temperature	-25.6 C (-14.1 F)	2.3 C (4.1 F)	79	34 of 100 (Routine)
2021-11-27	Iliamna AP	Record low maximum temperature	-21.6 C (-6.9 F)	2.7 C (4.9 F)	58	31 of 100 (Routine)
2021-11-28	Iliamna AP	Record low maximum temperature	-23.2 C (-9.8 F)	4.3 C (7.7 F)	76	38 of 100 (Notable)
2021-11-28	Bethel AP	Record low minimum temperature	-33.2 C (-27.8 F)	0.4 C (0.7 F)	94	37 of 100 (Notable)
2021-11-28	Puntilla	Record low maximum temperature	-25.6 C (-14.1 F)	3.4 C (6.1 F)	79	36 of 100 (Notable)
2021-11-28	Iliamna AP	Record low minimum temperature	-27.7 C (-17.9 F)	2.1 C (3.8 F)	76	34 of 100 (Routine)
2021-11-28	King Salmon	Record low minimum temperature	-33.2 C (-27.8 F)	6.0 C (10.8 F)	58	32 of 100 (Routine)
2021-11-28	King Salmon	Record low maximum temperature	-21.0 C (-5.8 F)	2.1 C (3.8 F)	58	28 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 146 records the event counts. The counts above use the full total.

Related Headlines

Third party news, headline and link only

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
1.0	99
0.5	99
4.3	76
0.4	94
2.2	79
3.4	79
1.6	84
1.6	79
2.3	79
2.1	76
1.6	72
1.1	79
6.0	58
1.0	71
2.7	58
0.4	71
1.1	72
1.0	60
4.5	47
2.1	58
6.1	36
1.0	60
0.4	58
2.2	58
1.0	58
0.5	58
3.3	50
3.2	38
1.0	47
0.5	50
0.4	54
0.5	52
1.6	50
0.5	50
1.0	46
2.2	35
1.1	39
0.6	48
1.6	8
1.1	52
3.3	31
1.1	40
4.4	31
0.6	31
1.6	31
8.2	16
3.3	10
2.8	26
2.2	28
0.5	39
4.7	26
2.7	31
3.9	18
3.4	12
3.2	31
2.7	31
2.8	10
1.7	10
0.6	39
0.5	31
0.5	39
4.4	10
3.3	27
2.6	32
4.9	12
1.7	10
2.2	12
1.2	35
0.5	31
0.6	31
0.5	31
1.7	31
0.5	31
1.7	27
0.4	35
1.1	10
0.4	15
1.1	31
0.6	31
1.1	31
0.5	28
0.2	31
1.0	16
1.6	16
0.4	12
0.4	15
0.4	10
0.5	31
1.7	18
1.1	10
0.1	30
0.3	31
0.9	27
2.6	18
1.1	26
0.1	31
0.2	31
0.1	27
1.0	10
0.4	16
0.6	8
2.8	8
1.6	16
1.1	8
5.0	8
2.2	10
0.5	23
4.6	4
3.0	8
2.2	10
0.4	16
1.1	10
0.5	18
1.4	18
1.2	18
2.1	10
1.1	10
1.7	8
3.4	8
1.1	10
1.1	8
0.5	18
1.9	12
0.6	10
0.6	10
1.6	12
1.1	8
1.4	10
0.7	10
1.1	6
1.1	6
1.1	10
1.1	10
1.1	10
0.6	8
0.2	16
0.9	10
0.7	10
0.5	12
0.5	10
0.6	8
1.6	6
1.1	8
1.7	4
0.1	12
0.5	8

Margin (C)	Years the old record stood
1.0	99
0.5	99
4.3	76
0.4	94
2.2	79
3.4	79
1.6	84
1.6	79
2.3	79
2.1	76
1.6	72
1.1	79
6.0	58
1.0	71
2.7	58
0.4	71
1.1	72
1.0	60
4.5	47
2.1	58
6.1	36
1.0	60
0.4	58
2.2	58
1.0	58
0.5	58
3.3	50
3.2	38
1.0	47
0.5	50
0.4	54
0.5	52
1.6	50
0.5	50
1.0	46
2.2	35
1.1	39
0.6	48
1.6	8
1.1	52
3.3	31
1.1	40
4.4	31
0.6	31
1.6	31
8.2	16
3.3	10
2.8	26
2.2	28
0.5	39
4.7	26
2.7	31
3.9	18
3.4	12
3.2	31
2.7	31
2.8	10
1.7	10
0.6	39
0.5	31
0.5	39
4.4	10
3.3	27
2.6	32
4.9	12
1.7	10
2.2	12
1.2	35
0.5	31
0.6	31
0.5	31
1.7	31
0.5	31
1.7	27
0.4	35
1.1	10
0.4	15
1.1	31
0.6	31
1.1	31
0.5	28
0.2	31
1.0	16
1.6	16
0.4	12
0.4	15
0.4	10
0.5	31
1.7	18
1.1	10
0.1	30
0.3	31
0.9	27
2.6	18
1.1	26
0.1	31
0.2	31
0.1	27
1.0	10
0.4	16
0.6	8
2.8	8
1.6	16
1.1	8
5.0	8
2.2	10
0.5	23
4.6	4
3.0	8
2.2	10
0.4	16
1.1	10
0.5	18
1.4	18
1.2	18
2.1	10
1.1	10
1.7	8
3.4	8
1.1	10
1.1	8
0.5	18
1.9	12
0.6	10
0.6	10
1.6	12
1.1	8
1.4	10
0.7	10
1.1	6
1.1	6
1.1	10
1.1	10
1.1	10
0.6	8
0.2	16
0.9	10
0.7	10
0.5	12
0.5	10
0.6	8
1.6	6
1.1	8
1.7	4
0.1	12
0.5	8

Margin (C)	Years the old record stood
1.0	99
0.5	99
4.3	76
0.4	94
2.2	79
3.4	79
1.6	84
1.6	79
2.3	79
2.1	76
1.6	72
1.1	79
6.0	58
1.0	71
2.7	58
0.4	71
1.1	72
1.0	60
4.5	47
2.1	58
6.1	36
1.0	60
0.4	58
2.2	58
1.0	58
0.5	58
3.3	50
3.2	38
1.0	47
0.5	50
0.4	54
0.5	52
1.6	50
0.5	50
1.0	46
2.2	35
1.1	39
0.6	48
1.6	8
1.1	52
3.3	31
1.1	40
4.4	31
0.6	31
1.6	31
8.2	16
3.3	10
2.8	26
2.2	28
0.5	39
4.7	26
2.7	31
3.9	18
3.4	12
3.2	31
2.7	31
2.8	10
1.7	10
0.6	39
0.5	31
0.5	39
4.4	10
3.3	27
2.6	32
4.9	12
1.7	10
2.2	12
1.2	35
0.5	31
0.6	31
0.5	31
1.7	31
0.5	31
1.7	27
0.4	35
1.1	10
0.4	15
1.1	31
0.6	31
1.1	31
0.5	28
0.2	31
1.0	16
1.6	16
0.4	12
0.4	15
0.4	10
0.5	31
1.7	18
1.1	10
0.1	30
0.3	31
0.9	27
2.6	18
1.1	26
0.1	31
0.2	31
0.1	27
1.0	10
0.4	16
0.6	8
2.8	8
1.6	16
1.1	8
5.0	8
2.2	10
0.5	23
4.6	4
3.0	8
2.2	10
0.4	16
1.1	10
0.5	18
1.4	18
1.2	18
2.1	10
1.1	10
1.7	8
3.4	8
1.1	10
1.1	8
0.5	18
1.9	12
0.6	10
0.6	10
1.6	12
1.1	8
1.4	10
0.7	10
1.1	6
1.1	6
1.1	10
1.1	10
1.1	10
0.6	8
0.2	16
0.9	10
0.7	10
0.5	12
0.5	10
0.6	8
1.6	6
1.1	8
1.7	4
0.1	12
0.5	8