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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Cold outbreak in United States, 1 to 7 December 2018

Cold outbreak in United States, 1 to 7 December 2018: 164 records at 129 stations, peak on 3 December 2018. Closed.

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

Key Facts

  • Cold outbreak in United States, 1 to 7 December 2018 set or tied 164 station records at 129 stations.
  • It ran from 1 December 2018 to 7 December 2018 (7 days) and its peak day was 3 December 2018.
  • Status: closed.
  • Austin #2 set a daily record low minimum temperature of -18.3 C (-0.9 F) on 3 December 2018.
  • The busiest day was 3 December 2018 with 53 records.
  • The oldest broken record in the ranked list had stood for 120 years.

Footprint

1 to 7 December 2018
Footprint of Cold outbreak in United States, 1 to 7 December 2018 The area covered by Cold outbreak in United States, 1 to 7 December 2018 is outlined, with 18 of the stations that set records marked, coloured by record type.
The area covered by Cold outbreak in United States, 1 to 7 December 2018 is outlined, with 18 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Cold outbreak in United States, 1 to 7 December 2018: stations that set records in the event
StationTypeValueDate
Austin #2Record low minimum temperature-18.3 C (-0.9 F)2018-12-03
RigginsRecord low minimum temperature-12.2 C (10.0 F)2018-12-06
Lahontan DamRecord low maximum temperature0.6 C (33.1 F)2018-12-04
ScipioRecord low maximum temperature-5.0 C (23.0 F)2018-12-04
Oceanside MarinaRecord low maximum temperature13.9 C (57.0 F)2018-12-05
Bright Angel RsRecord low minimum temperature-19.4 C (-2.9 F)2018-12-03
McCloudRecord low minimum temperature-8.3 C (17.1 F)2018-12-03
Lamar RsRecord low maximum temperature-9.4 C (15.1 F)2018-12-03
WoodruffRecord low minimum temperature-29.4 C (-20.9 F)2018-12-05
Salmon APRecord low minimum temperature-20.5 C (-4.9 F)2018-12-07
PanguitchRecord low maximum temperature-5.6 C (21.9 F)2018-12-04
Indio Fire STNRecord low maximum temperature13.3 C (55.9 F)2018-12-06
Vallecito DamRecord low maximum temperature-5.0 C (23.0 F)2018-12-04
So Entrance Yosemite NpRecord low minimum temperature-10.6 C (12.9 F)2018-12-04
El Vado DamRecord low minimum temperature-25.0 C (-13.0 F)2018-12-04
TonopahRecord low minimum temperature-10.0 C (14.0 F)2018-12-03
Calaveras Big TreesRecord low maximum temperature-0.6 C (30.9 F)2018-12-02
Burbank Valley Pump PltRecord low maximum temperature10.6 C (51.1 F)2018-12-06

Records per Day

Peak day 53
Records per day during Cold outbreak in United States, 1 to 7 December 2018 Records set or tied each day from 1 December 2018 to 7 December 2018. The most in one day was 53 on 3 December 2018. 0 15 30 45 60 12-0212-0312-0412-0512-0612-07
Records set or tied each day from 1 December 2018 to 7 December 2018. The most in one day was 53 on 3 December 2018.
Records per day during Cold outbreak in United States, 1 to 7 December 2018
DateRecords
2018-12-0236
2018-12-0353
2018-12-0436
2018-12-0514
2018-12-0623
2018-12-072

Top Records by Margin

Margin over the record replaced
Top records of Cold outbreak in United States, 1 to 7 December 2018 ranked by margin
El Vado Dam, 12-044.4 C (7.9 F)
Austin #2, 12-033.9 C (7.0 F)
Bright Angel Rs, 12-032.7 C (4.9 F)
Salmon AP, 12-072.7 C (4.9 F)
Panguitch, 12-042.3 C (4.1 F)
Vallecito Dam, 12-041.7 C (3.1 F)
So Entrance Yosemite Np, 12-041.7 C (3.1 F)
Riggins, 12-061.6 C (2.9 F)
Lahontan Dam, 12-041.1 C (2.0 F)
Lamar Rs, 12-031.1 C (2.0 F)
Bright Angel Rs, 12-031.1 C (2.0 F)
Scipio, 12-040.6 C (1.1 F)
Indio Fire STN, 12-060.6 C (1.1 F)
Tonopah, 12-030.6 C (1.1 F)
Calaveras Big Trees, 12-020.6 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, 1 to 7 December 2018 164 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 0.02.04.06.08.0 Margin (C) Years the old record stood
164 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, 1 to 7 December 2018
Margin (C)Years the old record stood
3.9120
1.6119
0.5101
1.199
0.6108
2.787
0.596
1.187
0.587
0.589
0.675
2.365
1.764
1.769
2.756
4.449
0.665
1.163
0.567
0.665
2.847
2.747
2.845
3.945
1.163
0.651
1.740
3.333
1.744
0.645
0.540
7.74
1.145
0.549
0.648
0.549
0.549
0.548
2.237
2.240
1.725
0.540
0.527
0.636
0.520
1.135
1.140
0.640
0.532
3.427
2.88
1.136
1.733
2.232
3.213
1.727
3.84
1.133
1.78
3.819
0.621
5.64
3.38
1.727
2.220
2.921
0.512
2.28
2.213
0.512
1.127
0.512
1.628
0.236
2.216
2.87
0.528
1.720
1.127
0.54
2.113
0.68
0.621
2.88
1.125
1.64
2.34
0.54
0.54
2.313
4.44
1.521
0.628
0.512
0.621
0.616
1.713
0.512
1.113
1.14
4.44
2.313
1.713
0.521
1.713
0.521
0.68
1.112
2.212
0.512
1.112
1.77
1.78
0.64
1.113
0.220
0.320
1.113
0.67
1.68
1.18
1.78
1.112
1.112
3.31
1.67
1.712
0.513
1.27
1.17
0.612
1.74
0.54
0.512
0.611
1.68
0.512
0.812
1.18
0.612
1.38
0.812
0.113
0.213
0.57
1.14
1.18
0.612
1.08
1.18
1.18
0.68
0.78
0.54
0.64
0.64
0.58
0.64
0.27
1.04
1.11
0.61
1.11
0.24

Compared With Other Events

Station records per event
Station records in Cold outbreak in United States, 1 to 7 December 2018 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, 1 to 7 December 2018 (this event)164 records

Every Record Set

20 of 164
Every record set or tied during Cold outbreak in United States, 1 to 7 December 2018, in date order
DateStationRecordValueMarginYears stoodSignificance
2018-12-02Calaveras Big TreesRecord low maximum temperature-0.6 C (30.9 F)0.6 C (1.1 F)6529 of 100 (Routine)
2018-12-03Austin #2Record low minimum temperature-18.3 C (-0.9 F)3.9 C (7.0 F)12047 of 100 (Notable)
2018-12-03Bright Angel RsRecord low minimum temperature-19.4 C (-2.9 F)2.7 C (4.9 F)8740 of 100 (Notable)
2018-12-03McCloudRecord low minimum temperature-8.3 C (17.1 F)0.5 C (0.9 F)9639 of 100 (Notable)
2018-12-03Lamar RsRecord low maximum temperature-9.4 C (15.1 F)1.1 C (2.0 F)8737 of 100 (Notable)
2018-12-03TonopahRecord low minimum temperature-10.0 C (14.0 F)0.6 C (1.1 F)6530 of 100 (Routine)
2018-12-03Bright Angel RsRecord low maximum temperature-5.0 C (23.0 F)1.1 C (2.0 F)6329 of 100 (Routine)
2018-12-04Lahontan DamRecord low maximum temperature0.6 C (33.1 F)1.1 C (2.0 F)9941 of 100 (Notable)
2018-12-04ScipioRecord low maximum temperature-5.0 C (23.0 F)0.6 C (1.1 F)10841 of 100 (Notable)
2018-12-04PanguitchRecord low maximum temperature-5.6 C (21.9 F)2.3 C (4.1 F)6533 of 100 (Routine)
2018-12-04Vallecito DamRecord low maximum temperature-5.0 C (23.0 F)1.7 C (3.1 F)6432 of 100 (Routine)
2018-12-04So Entrance Yosemite NpRecord low minimum temperature-10.6 C (12.9 F)1.7 C (3.1 F)6931 of 100 (Routine)
2018-12-04El Vado DamRecord low minimum temperature-25.0 C (-13.0 F)4.4 C (7.9 F)4931 of 100 (Routine)
2018-12-05Oceanside MarinaRecord low maximum temperature13.9 C (57.0 F)0.5 C (0.9 F)10141 of 100 (Notable)
2018-12-05WoodruffRecord low minimum temperature-29.4 C (-20.9 F)0.5 C (0.9 F)8936 of 100 (Notable)
2018-12-06RigginsRecord low minimum temperature-12.2 C (10.0 F)1.6 C (2.9 F)11943 of 100 (Notable)
2018-12-06Indio Fire STNRecord low maximum temperature13.3 C (55.9 F)0.6 C (1.1 F)7533 of 100 (Routine)
2018-12-06Burbank Valley Pump PltRecord low maximum temperature10.6 C (51.1 F)0.5 C (0.9 F)6729 of 100 (Routine)
2018-12-07Salmon APRecord low minimum temperature-20.5 C (-4.9 F)0.5 C (0.9 F)8736 of 100 (Notable)
2018-12-07Salmon APRecord low maximum temperature-7.1 C (19.2 F)2.7 C (4.9 F)5631 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 164 records the event counts. The counts above use the full total.

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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.