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Data as of 2026-10-12
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Built 2026-10-14 (14 October 2026)

Cold outbreak in United States and Mexico, 13 October to 5 November 2020

Cold outbreak in United States and Mexico, 13 October to 5 November 2020: 9,841 records at 2,608 stations, peak on 26 October 2020. Closed.

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

Key Facts

  • Cold outbreak in United States and Mexico, 13 October to 5 November 2020 set or tied 9,841 station records at 2,608 stations.
  • It ran from 13 October 2020 to 5 November 2020 (24 days) and its peak day was 26 October 2020.
  • Status: closed.
  • Missoula 6 NW WFO set a daily record low minimum temperature of -19.4 C (-2.9 F) on 26 October 2020.
  • The busiest day was 26 October 2020 with 2,181 records.
  • The oldest broken record in the ranked list had stood for 129 years.

Footprint

13 October to 5 November 2020
Footprint of Cold outbreak in United States and Mexico, 13 October to 5 November 2020 The area covered by Cold outbreak in United States and Mexico, 13 October to 5 November 2020 is outlined, with 20 of the stations that set records marked, coloured by record type.
The area covered by Cold outbreak in United States and Mexico, 13 October to 5 November 2020 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Cold outbreak in United States and Mexico, 13 October to 5 November 2020: stations that set records in the event
StationTypeValueDate
Missoula 6 NW WFORecord low minimum temperature-19.4 C (-2.9 F)2020-10-26
MeekerRecord low minimum temperature-27.2 C (-17.0 F)2020-10-27
Bozeman Montana State UNIVRecord low minimum temperature-22.8 C (-9.0 F)2020-10-26
MountainairRecord low maximum temperature-7.2 C (19.0 F)2020-10-26
ValentineRecord low minimum temperature-22.8 C (-9.0 F)2020-10-27
Chadron 3SWRecord low minimum temperature-23.9 C (-11.0 F)2020-10-27
Pathfinder DamRecord low minimum temperature-19.4 C (-2.9 F)2020-10-25
Ft BentonRecord low minimum temperature-23.3 C (-9.9 F)2020-10-26
LaketownRecord low minimum temperature-17.2 C (1.0 F)2020-10-26
Moran 5WNWRecord low minimum temperature-23.3 C (-9.9 F)2020-10-26
ChinookRecord low minimum temperature-21.7 C (-7.1 F)2020-10-23
Glasgow #2Record low minimum temperature-20.6 C (-5.1 F)2020-10-23
PlentywoodRecord low minimum temperature-18.9 C (-2.0 F)2020-10-23
Dillon U of Montana WesternRecord low minimum temperature-21.1 C (-6.0 F)2020-10-26
Virginia CityRecord low minimum temperature-19.4 C (-2.9 F)2020-10-26
San JonRecord low maximum temperature-0.6 C (30.9 F)2020-10-26
ManilaRecord low minimum temperature-22.8 C (-9.0 F)2020-10-26
DuboisRecord low minimum temperature-26.1 C (-15.0 F)2020-10-26
WorlandRecord low minimum temperature-22.2 C (-8.0 F)2020-10-27
JalRecord low maximum temperature-0.6 C (30.9 F)2020-10-28

Records per Day

Peak day 2,181
Records per day during Cold outbreak in United States and Mexico, 13 October to 5 November 2020 Records set or tied each day from 13 October 2020 to 5 November 2020. The most in one day was 2,181 on 26 October 2020. 0 625 1,250 1,875 2,500 10-1310-1710-2010-2310-2610-2911-0111-04
Records set or tied each day from 13 October 2020 to 5 November 2020. The most in one day was 2,181 on 26 October 2020.
Records per day during Cold outbreak in United States and Mexico, 13 October to 5 November 2020
DateRecords
2020-10-131
2020-10-158
2020-10-1636
2020-10-1767
2020-10-18180
2020-10-19242
2020-10-20250
2020-10-21180
2020-10-22533
2020-10-23696
2020-10-24922
2020-10-251,808
2020-10-262,181
2020-10-271,677
2020-10-28720
2020-10-2986
2020-10-3053
2020-10-3188
2020-11-0136
2020-11-0217
2020-11-0328
2020-11-0430
2020-11-052

Top Records by Margin

Margin over the record replaced
Top records of Cold outbreak in United States and Mexico, 13 October to 5 November 2020 ranked by margin
Manila, 10-2613.9 C (25.0 F)
Ft Benton, 10-2612.7 C (22.9 F)
Chadron 3SW, 10-2712.2 C (22.0 F)
Missoula 6 NW WFO, 10-2611.1 C (20.0 F)
Bozeman Montana State UNIV, 10-2610.6 C (19.1 F)
Valentine, 10-2710.6 C (19.1 F)
San Jon, 10-2610.6 C (19.1 F)
Pathfinder Dam, 10-2510.0 C (18.0 F)
Chinook, 10-239.5 C (17.1 F)
Glasgow #2, 10-239.5 C (17.1 F)
Plentywood, 10-239.5 C (17.1 F)
Moran 5WNW, 10-268.9 C (16.0 F)
Virginia City, 10-268.3 C (14.9 F)
Dubois, 10-268.3 C (14.9 F)
Laketown, 10-267.8 C (14.0 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 and Mexico, 13 October to 5 November 2020 500 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 38 75 113 150 0.05.010.015.020.0 Margin (C) Years the old record stood
500 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 and Mexico, 13 October to 5 November 2020
Margin (C)Years the old record stood
11.1124
6.1112
10.6101
6.1114
10.6101
12.295
12.781
7.8107
8.995
10.0101
9.5115
9.5101
9.5114
7.8101
8.3101
5.096
10.697
13.950
8.3109
7.2101
8.2101
11.1109
7.2110
8.995
9.495
7.2107
8.3107
15.081
11.7122
6.7107
3.9102
13.381
15.650
8.495
11.166
7.8101
10.5101
2.8114
7.297
10.078
2.8114
11.784
8.9103
10.097
3.7102
2.2102
5.6104
6.1121
5.0101
5.5122
10.0122
2.894
7.295
9.5101
10.0109
3.994
9.981
5.0101
9.4122
5.0101
1.7106
1.7102
10.0109
11.769
10.084
8.495
7.395
6.1101
6.7101
1.1114
6.7101
5.0107
5.5107
2.895
2.894
8.4109
7.3110
8.4112
14.550
6.1123
6.1101
6.7101
8.978
6.1101
6.198
1.1124
6.1106
6.1122
6.6114
11.750
8.378
5.4120
11.666
6.295
9.468
4.5101
7.2109
2.294
0.5106
6.7102
0.5129
1.1101
11.787
5.6101
4.5101
5.0109
1.794
6.295
6.1109
4.4101
8.3109
1.794
6.788
5.0101
7.2101
5.0101
0.5102
5.6103
8.881
6.6101
2.7114
2.284
7.2101
6.1122
3.9101
5.6101
0.5106
6.1102
6.6102
1.794
2.891
5.0101
5.6112
13.450
6.7112
0.596
1.794
0.5101
1.196
4.5112
1.194
4.5101
5.5101
5.6101
4.4101
5.0107
7.897
7.2101
1.794
1.694
6.1101
5.6101
7.1101
6.697
5.591
3.9107
3.8101
1.194
1.194
1.194
1.194
5.5109
5.0107
4.4101
3.8101
6.1101
13.350
6.6101
6.7101
5.0102
6.695
5.695
5.6109
3.8101
7.2101
1.194
3.9107
3.9100
3.9101
5.0101
3.4120
6.1101
5.0101
3.9109
10.666
10.666
4.9101
1.094
5.594
5.5109
3.3107
6.1101
5.095
7.395
3.4124
9.472
0.594
0.694
0.694
0.594

Compared With Other Events

Station records per event
Station records in Cold outbreak in United States and Mexico, 13 October to 5 November 2020 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 2020 (this event)9,841 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 and Mexico, 13 February to 2 March 20225,063 records

Every Record Set

20 of 9,841
Every record set or tied during Cold outbreak in United States and Mexico, 13 October to 5 November 2020, in date order
DateStationRecordValueMarginYears stoodSignificance
2020-10-23ChinookRecord low minimum temperature-21.7 C (-7.1 F)9.5 C (17.1 F)11559 of 100 (Notable)
2020-10-23Glasgow #2Record low minimum temperature-20.6 C (-5.1 F)9.5 C (17.1 F)10159 of 100 (Notable)
2020-10-23PlentywoodRecord low minimum temperature-18.9 C (-2.0 F)9.5 C (17.1 F)11459 of 100 (Notable)
2020-10-25Pathfinder DamRecord low minimum temperature-19.4 C (-2.9 F)10.0 C (18.0 F)10160 of 100 (Major)
2020-10-26Missoula 6 NW WFORecord low minimum temperature-19.4 C (-2.9 F)11.1 C (20.0 F)12467 of 100 (Major)
2020-10-26Bozeman Montana State UNIVRecord low minimum temperature-22.8 C (-9.0 F)10.6 C (19.1 F)10163 of 100 (Major)
2020-10-26MountainairRecord low maximum temperature-7.2 C (19.0 F)6.1 C (11.0 F)11463 of 100 (Major)
2020-10-26Ft BentonRecord low minimum temperature-23.3 C (-9.9 F)12.7 C (22.9 F)8160 of 100 (Major)
2020-10-26LaketownRecord low minimum temperature-17.2 C (1.0 F)7.8 C (14.0 F)10760 of 100 (Major)
2020-10-26Moran 5WNWRecord low minimum temperature-23.3 C (-9.9 F)8.9 C (16.0 F)9560 of 100 (Major)
2020-10-26Dillon U of Montana WesternRecord low minimum temperature-21.1 C (-6.0 F)7.8 C (14.0 F)10158 of 100 (Notable)
2020-10-26Virginia CityRecord low minimum temperature-19.4 C (-2.9 F)8.3 C (14.9 F)10158 of 100 (Notable)
2020-10-26San JonRecord low maximum temperature-0.6 C (30.9 F)10.6 C (19.1 F)9758 of 100 (Notable)
2020-10-26ManilaRecord low minimum temperature-22.8 C (-9.0 F)13.9 C (25.0 F)5058 of 100 (Notable)
2020-10-26DuboisRecord low minimum temperature-26.1 C (-15.0 F)8.3 C (14.9 F)10958 of 100 (Notable)
2020-10-27MeekerRecord low minimum temperature-27.2 C (-17.0 F)6.1 C (11.0 F)11264 of 100 (Major)
2020-10-27ValentineRecord low minimum temperature-22.8 C (-9.0 F)10.6 C (19.1 F)10161 of 100 (Major)
2020-10-27Chadron 3SWRecord low minimum temperature-23.9 C (-11.0 F)12.2 C (22.0 F)9561 of 100 (Major)
2020-10-27WorlandRecord low minimum temperature-22.2 C (-8.0 F)7.2 C (13.0 F)10158 of 100 (Notable)
2020-10-28JalRecord low maximum temperature-0.6 C (30.9 F)5.0 C (9.0 F)9658 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 9,841 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.