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Built 2026-10-19 (19 October 2026)

Cold outbreak in United States, 30 September to 4 October 2026

Cold outbreak in United States, 30 September to 4 October 2026: 24 records at 15 stations, peak on 2 October 2026. Closed.

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

Key Facts

  • Cold outbreak in United States, 30 September to 4 October 2026 set or tied 24 station records at 15 stations.
  • It ran from 30 September 2026 to 4 October 2026 (5 days) and its peak day was 2 October 2026.
  • Status: closed.
  • Wiseman set a daily record low maximum temperature of -5.0 C (23.0 F) on 3 October 2026 (provisional).
  • The busiest day was 2 October 2026 with 16 records.
  • The oldest broken record in the ranked list had stood for 105 years.

Footprint

30 September to 4 October 2026
Footprint of Cold outbreak in United States, 30 September to 4 October 2026 The area covered by Cold outbreak in United States, 30 September to 4 October 2026 is outlined, with 14 of the stations that set records marked, coloured by record type.
The area covered by Cold outbreak in United States, 30 September to 4 October 2026 is outlined, with 14 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Cold outbreak in United States, 30 September to 4 October 2026: stations that set records in the event
StationTypeValueDate
WisemanRecord low maximum temperature-5.0 C (23.0 F)2026-10-03
Koyukuk Nwr AlaskaRecord low maximum temperature-3.9 C (25.0 F)2026-09-30
Upper ChenaRecord low maximum temperature-5.6 C (21.9 F)2026-10-02
Monument CreekRecord low maximum temperature-3.9 C (25.0 F)2026-10-02
Munson RidgeRecord low maximum temperature-6.7 C (19.9 F)2026-10-02
Little Chena RidgeRecord low maximum temperature-4.4 C (24.1 F)2026-10-02
Selawik AlaskaRecord low minimum temperature-13.9 C (7.0 F)2026-10-02
Kiana AlaskaRecord low maximum temperature-2.8 C (27.0 F)2026-10-02
Mt. RyanRecord low maximum temperature-5.6 C (21.9 F)2026-10-02
Caribou Peak AlaskaRecord low maximum temperature-4.4 C (24.1 F)2026-10-02
Hogatza River AlaskaRecord low minimum temperature-13.9 C (7.0 F)2026-10-02
Innoko Flats AlaskaRecord low minimum temperature-7.8 C (18.0 F)2026-10-02
Poorman AlaskaRecord low minimum temperature-8.3 C (17.1 F)2026-10-02
Round Lake AlaskaRecord low minimum temperature-10.0 C (14.0 F)2026-10-02
Chatanika AlaskaRecord low minimum temperature-7.8 C (18.0 F)2026-10-03

Records per Day

Peak day 16
Records per day during Cold outbreak in United States, 30 September to 4 October 2026 Records set or tied each day from 30 September 2026 to 4 October 2026. The most in one day was 16 on 2 October 2026. 0 5 10 15 20 09-3010-0110-0210-0310-04
Records set or tied each day from 30 September 2026 to 4 October 2026. The most in one day was 16 on 2 October 2026.
Records per day during Cold outbreak in United States, 30 September to 4 October 2026
DateRecords
2026-09-301
2026-10-013
2026-10-0216
2026-10-033
2026-10-041

Top Records by Margin

Margin over the record replaced
Top records of Cold outbreak in United States, 30 September to 4 October 2026 ranked by margin
Wiseman, 10-033.3 C (5.9 F)
Selawik Alaska, 10-023.3 C (5.9 F)
Koyukuk Nwr Alaska, 10-012.7 C (4.9 F)
Caribou Peak Alaska, 10-022.7 C (4.9 F)
Hogatza River Alaska, 10-022.2 C (4.0 F)
Monument Creek, 10-021.9 C (3.4 F)
Munson Ridge, 10-021.7 C (3.1 F)
Upper Chena, 10-021.6 C (2.9 F)
Little Chena Ridge, 10-021.4 C (2.5 F)
Koyukuk Nwr Alaska, 10-021.1 C (2.0 F)
Koyukuk Nwr Alaska, 09-300.6 C (1.1 F)
Kiana Alaska, 10-020.6 C (1.1 F)
Mt. Ryan, 10-020.6 C (1.1 F)
Caribou Peak Alaska, 10-020.6 C (1.1 F)
Innoko Flats Alaska, 10-020.6 C (1.1 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 Cold outbreak in United States, 30 September to 4 October 2026 24 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 30 60 90 120 0.01.02.03.04.0 Margin (C) Years the old record stood
24 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, 30 September to 4 October 2026
Margin (C)Years the old record stood
3.3105
0.622
1.636
1.936
1.736
1.436
0.519
2.725
3.329
0.633
1.132
0.636
2.721
2.225
0.629
0.629
0.529
0.529
0.625
0.517
2.24
0.517
1.14
1.14

Compared With Other Events

Station records per event
Station records in Cold outbreak in United States, 30 September to 4 October 2026 compared with similar events
Cold outbreak in United States and Mexico, 6 February to 5 March 202112,118 records
Cold outbreak in United States and Mexico, 13 October to 5 November 20209,841 records
Cold outbreak in United States and Mexico, 23 December 2017 to 8 January 20188,263 records
Cold outbreak in United States and Mexico, 3 to 23 January 20247,675 records
Cold outbreak in United States, 15 January to 10 February 20265,568 records
Cold outbreak in United States, 30 September to 4 October 2026 (this event)24 records

Every Record Set

30 of 24
Every record set or tied during Cold outbreak in United States, 30 September to 4 October 2026, in date order
DateStationRecordValueMarginYears stoodSignificance
2026-09-30Koyukuk Nwr AlaskaRecord low maximum temperature (provisional)-3.9 C (25.0 F)0.6 C (1.1 F)2220 of 100 (Routine)
2026-09-30Koyukuk Nwr AlaskaRecord low minimum temperature (tie) (provisional)-6.7 C (19.9 F)tie242 of 100 (Routine)
2026-10-01Koyukuk Nwr AlaskaRecord low maximum temperature (provisional)-4.4 C (24.1 F)2.7 C (4.9 F)2515 of 100 (Routine)
2026-10-01Kiana AlaskaRecord low minimum temperature (provisional)-11.1 C (12.0 F)0.5 C (0.9 F)178 of 100 (Routine)
2026-10-01Koyukuk Nwr AlaskaRecord low minimum temperature (provisional)-9.4 C (15.1 F)2.2 C (4.0 F)48 of 100 (Routine)
2026-10-01Round Lake AlaskaRecord low maximum temperature (tie) (provisional)0.0 C (32.0 F)tie333 of 100 (Routine)
2026-10-01Poorman AlaskaRecord low maximum temperature (tie) (provisional)-1.7 C (28.9 F)tie172 of 100 (Routine)
2026-10-02Upper ChenaRecord low maximum temperature (provisional)-5.6 C (21.9 F)1.6 C (2.9 F)3616 of 100 (Routine)
2026-10-02Monument CreekRecord low maximum temperature (provisional)-3.9 C (25.0 F)1.9 C (3.4 F)3616 of 100 (Routine)
2026-10-02Munson RidgeRecord low maximum temperature (provisional)-6.7 C (19.9 F)1.7 C (3.1 F)3616 of 100 (Routine)
2026-10-02Little Chena RidgeRecord low maximum temperature (provisional)-4.4 C (24.1 F)1.4 C (2.5 F)3616 of 100 (Routine)
2026-10-02Selawik AlaskaRecord low minimum temperature (provisional)-13.9 C (7.0 F)3.3 C (5.9 F)2915 of 100 (Routine)
2026-10-02Kiana AlaskaRecord low maximum temperature (provisional)-2.8 C (27.0 F)0.6 C (1.1 F)3314 of 100 (Routine)
2026-10-02Koyukuk Nwr AlaskaRecord low maximum temperature (provisional)-1.7 C (28.9 F)1.1 C (2.0 F)3214 of 100 (Routine)
2026-10-02Mt. RyanRecord low maximum temperature (provisional)-5.6 C (21.9 F)0.6 C (1.1 F)3614 of 100 (Routine)
2026-10-02Caribou Peak AlaskaRecord low maximum temperature (provisional)-4.4 C (24.1 F)2.7 C (4.9 F)2113 of 100 (Routine)
2026-10-02Hogatza River AlaskaRecord low minimum temperature (provisional)-13.9 C (7.0 F)2.2 C (4.0 F)2513 of 100 (Routine)
2026-10-02Caribou Peak AlaskaRecord low minimum temperature (provisional)-7.8 C (18.0 F)0.6 C (1.1 F)2912 of 100 (Routine)
2026-10-02Innoko Flats AlaskaRecord low minimum temperature (provisional)-7.8 C (18.0 F)0.6 C (1.1 F)2912 of 100 (Routine)
2026-10-02Kiana AlaskaRecord low minimum temperature (provisional)-13.3 C (8.1 F)0.5 C (0.9 F)2911 of 100 (Routine)
2026-10-02Poorman AlaskaRecord low minimum temperature (provisional)-8.3 C (17.1 F)0.5 C (0.9 F)2911 of 100 (Routine)
2026-10-02Round Lake AlaskaRecord low minimum temperature (provisional)-10.0 C (14.0 F)0.6 C (1.1 F)2510 of 100 (Routine)
2026-10-02Hogatza River AlaskaRecord low maximum temperature (tie) (provisional)1.1 C (34.0 F)tie272 of 100 (Routine)
2026-10-03WisemanRecord low maximum temperature (provisional)-5.0 C (23.0 F)3.3 C (5.9 F)10545 of 100 (Notable)
2026-10-03Koyukuk Nwr AlaskaRecord low minimum temperature (provisional)-8.3 C (17.1 F)0.5 C (0.9 F)178 of 100 (Routine)
2026-10-03Poorman AlaskaRecord low minimum temperature (provisional)-10.0 C (14.0 F)1.1 C (2.0 F)45 of 100 (Routine)
2026-10-03Chatanika AlaskaRecord low minimum temperature (tie) (provisional)-7.8 C (18.0 F)tie363 of 100 (Routine)
2026-10-03Caribou Peak AlaskaRecord low minimum temperature (tie) (provisional)-10.0 C (14.0 F)tie292 of 100 (Routine)
2026-10-03Little Chena RidgeRecord low minimum temperature (tie) (provisional)-9.4 C (15.1 F)tie192 of 100 (Routine)
2026-10-04WisemanRecord low maximum temperature (provisional)-3.3 C (26.1 F)0.5 C (0.9 F)1915 of 100 (Routine)

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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.