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Built 2026-10-19 (19 October 2026)

Cold outbreak in United States, 25 June to 6 July 2018

Cold outbreak in United States, 25 June to 6 July 2018: 127 records at 116 stations, peak on 4 July 2018. Closed.

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

Key Facts

  • Cold outbreak in United States, 25 June to 6 July 2018 set or tied 127 station records at 116 stations.
  • It ran from 25 June 2018 to 6 July 2018 (12 days) and its peak day was 4 July 2018.
  • Status: closed.
  • Howe set a monthly record low minimum temperature of -0.6 C (30.9 F) on 3 July 2018.
  • The busiest day was 4 July 2018 with 38 records.
  • The oldest broken record in the ranked list had stood for 118 years.

Footprint

25 June to 6 July 2018
Footprint of Cold outbreak in United States, 25 June to 6 July 2018 The area covered by Cold outbreak in United States, 25 June to 6 July 2018 is outlined, with 20 of the stations that set records marked, coloured by record type.
The area covered by Cold outbreak in United States, 25 June to 6 July 2018 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, 25 June to 6 July 2018: stations that set records in the event
StationTypeValueDate
HoweRecord low minimum temperature-0.6 C (30.9 F)2018-07-03
Cheyenne Wells 2NERecord low minimum temperature5.0 C (41.0 F)2018-07-01
WatervilleRecord low minimum temperature-2.2 C (28.0 F)2018-06-28
LacrosseRecord low minimum temperature-0.6 C (30.9 F)2018-06-27
Ft BentonRecord low maximum temperature17.8 C (64.0 F)2018-07-04
Eureka WFO Woodley IsRecord low minimum temperature7.2 C (45.0 F)2018-07-03
Ft Hall 1 NNERecord low minimum temperature2.2 C (36.0 F)2018-07-04
Eugene-Mahlon Sweet FldRecord low minimum temperature3.3 C (37.9 F)2018-07-03
Buffalo Bill DamRecord low minimum temperature7.2 C (45.0 F)2018-07-05
ChoteauRecord low minimum temperature2.2 C (36.0 F)2018-07-04
WaldenRecord low maximum temperature16.7 C (62.1 F)2018-07-01
KayceeRecord low minimum temperature0.0 C (32.0 F)2018-07-05
PolebridgeRecord low maximum temperature12.8 C (55.0 F)2018-07-04
Opheim 12 SSERecord low minimum temperature1.7 C (35.1 F)2018-07-05
PavillionRecord low minimum temperature4.4 C (39.9 F)2018-07-02
ColumbusRecord low minimum temperature3.3 C (37.9 F)2018-07-05
Kettleman CityRecord low minimum temperature10.6 C (51.1 F)2018-07-06
Leavenworth 3 SRecord low minimum temperature1.1 C (34.0 F)2018-06-26
TillamookRecord low maximum temperature12.8 C (55.0 F)2018-06-28
CalistogaRecord low maximum temperature21.7 C (71.1 F)2018-07-04

Records per Day

Peak day 38
Records per day during Cold outbreak in United States, 25 June to 6 July 2018 Records set or tied each day from 25 June 2018 to 6 July 2018. The most in one day was 38 on 4 July 2018. 0 10 20 30 40 06-2506-2706-2907-0107-0307-05
Records set or tied each day from 25 June 2018 to 6 July 2018. The most in one day was 38 on 4 July 2018.
Records per day during Cold outbreak in United States, 25 June to 6 July 2018
DateRecords
2018-06-251
2018-06-262
2018-06-272
2018-06-286
2018-06-293
2018-06-308
2018-07-0121
2018-07-023
2018-07-0331
2018-07-0438
2018-07-0510
2018-07-062

Top Records by Margin

Margin over the record replaced
Top records of Cold outbreak in United States, 25 June to 6 July 2018 ranked by margin
Polebridge, 07-044.4 C (7.9 F)
Calistoga, 07-043.9 C (7.0 F)
Cheyenne Wells 2NE, 07-013.3 C (5.9 F)
Waterville, 06-282.8 C (5.0 F)
Lacrosse, 06-272.3 C (4.1 F)
Kaycee, 07-052.2 C (4.0 F)
Opheim 12 SSE, 07-052.2 C (4.0 F)
Tillamook, 06-282.2 C (4.0 F)
Leavenworth 3 S, 06-261.7 C (3.1 F)
Walden, 07-011.6 C (2.9 F)
Howe, 07-031.2 C (2.2 F)
Pavillion, 07-021.2 C (2.2 F)
Ft Benton, 07-041.1 C (2.0 F)
Buffalo Bill Dam, 07-051.1 C (2.0 F)
Columbus, 07-051.1 C (2.0 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, 25 June to 6 July 2018 127 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 0.01.32.53.85.0 Margin (C) Years the old record stood
127 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, 25 June to 6 July 2018
Margin (C)Years the old record stood
1.2103
3.391
2.8118
2.397
1.1116
0.667
0.696
0.664
1.180
0.687
1.672
2.268
4.463
2.272
1.175
1.265
1.143
1.752
3.936
2.247
1.752
0.561
1.159
1.147
2.241
1.245
1.159
5.025
1.749
0.659
1.153
0.621
0.656
0.656
1.247
1.247
1.135
0.539
1.149
1.735
1.737
0.648
0.647
0.647
0.652
0.648
0.549
0.544
0.645
0.531
0.645
0.645
0.647
0.644
0.521
0.324
2.220
1.139
2.824
0.635
1.137
0.524
0.541
1.135
2.228
0.617
2.224
1.224
2.215
0.632
2.217
2.719
2.24
1.717
0.635
1.724
1.128
1.724
1.128
1.220
0.727
0.517
1.123
0.529
1.120
1.124
1.124
1.125
2.025
1.78
0.623
0.625
0.619
0.612
1.119
0.528
0.529
1.719
0.724
0.824
0.523
1.74
0.524
0.624
0.324
0.527
0.325
1.523
0.724
0.524
0.424
0.128
2.28
0.124
0.65
0.619
0.619
0.517
0.58
0.312
0.63
0.60
0.68
1.40
0.94
0.50
0.10

Compared With Other Events

Station records per event
Station records in Cold outbreak in United States, 25 June to 6 July 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, 25 June to 6 July 2018 (this event)127 records

Every Record Set

20 of 127
Every record set or tied during Cold outbreak in United States, 25 June to 6 July 2018, in date order
DateStationRecordValueMarginYears stoodSignificance
2018-06-26Leavenworth 3 SRecord low minimum temperature1.1 C (34.0 F)1.7 C (3.1 F)5230 of 100 (Routine)
2018-06-27LacrosseRecord low minimum temperature-0.6 C (30.9 F)2.3 C (4.1 F)9744 of 100 (Notable)
2018-06-28WatervilleRecord low minimum temperature-2.2 C (28.0 F)2.8 C (5.0 F)11847 of 100 (Notable)
2018-06-28TillamookRecord low maximum temperature12.8 C (55.0 F)2.2 C (4.0 F)4729 of 100 (Routine)
2018-07-01Cheyenne Wells 2NERecord low minimum temperature5.0 C (41.0 F)3.3 C (5.9 F)9149 of 100 (Notable)
2018-07-01WaldenRecord low maximum temperature16.7 C (62.1 F)1.6 C (2.9 F)7236 of 100 (Notable)
2018-07-02PavillionRecord low minimum temperature4.4 C (39.9 F)1.2 C (2.2 F)6533 of 100 (Routine)
2018-07-03HoweRecord low minimum temperature-0.6 C (30.9 F)1.2 C (2.2 F)10353 of 100 (Notable)
2018-07-03Eureka WFO Woodley IsRecord low minimum temperature7.2 C (45.0 F)0.6 C (1.1 F)6741 of 100 (Notable)
2018-07-03Eugene-Mahlon Sweet FldRecord low minimum temperature3.3 C (37.9 F)0.6 C (1.1 F)6439 of 100 (Notable)
2018-07-04Ft BentonRecord low maximum temperature17.8 C (64.0 F)1.1 C (2.0 F)11642 of 100 (Notable)
2018-07-04Ft Hall 1 NNERecord low minimum temperature2.2 C (36.0 F)0.6 C (1.1 F)9640 of 100 (Notable)
2018-07-04ChoteauRecord low minimum temperature2.2 C (36.0 F)0.6 C (1.1 F)8737 of 100 (Notable)
2018-07-04PolebridgeRecord low maximum temperature12.8 C (55.0 F)4.4 C (7.9 F)6335 of 100 (Notable)
2018-07-04CalistogaRecord low maximum temperature21.7 C (71.1 F)3.9 C (7.0 F)3629 of 100 (Routine)
2018-07-05Buffalo Bill DamRecord low minimum temperature7.2 C (45.0 F)1.1 C (2.0 F)8038 of 100 (Notable)
2018-07-05KayceeRecord low minimum temperature0.0 C (32.0 F)2.2 C (4.0 F)6836 of 100 (Notable)
2018-07-05Opheim 12 SSERecord low minimum temperature1.7 C (35.1 F)2.2 C (4.0 F)7234 of 100 (Routine)
2018-07-05ColumbusRecord low minimum temperature3.3 C (37.9 F)1.1 C (2.0 F)7533 of 100 (Routine)
2018-07-06Kettleman CityRecord low minimum temperature10.6 C (51.1 F)1.1 C (2.0 F)4332 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 127 records the event counts. The counts above use the full total.

Related Headlines

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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.