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

Heat wave in United States and Mexico, 27 March to 20 April 2018

Heat wave in United States and Mexico, 27 March to 20 April 2018: 1,578 records at 952 stations, peak on 11 April 2018. Closed.

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

Key Facts

  • Heat wave in United States and Mexico, 27 March to 20 April 2018 set or tied 1,578 station records at 952 stations.
  • It ran from 27 March 2018 to 20 April 2018 (25 days) and its peak day was 11 April 2018.
  • Status: closed.
  • Bodie California St Historic P set a monthly record high minimum temperature of 6.7 C (44.1 F) on 7 April 2018.
  • The busiest day was 11 April 2018 with 223 records.
  • The oldest broken record in the ranked list had stood for 124 years.

Footprint

27 March to 20 April 2018
Footprint of Heat wave in United States and Mexico, 27 March to 20 April 2018 The area covered by Heat wave in United States and Mexico, 27 March to 20 April 2018 is outlined, with 17 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in United States and Mexico, 27 March to 20 April 2018 is outlined, with 17 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in United States and Mexico, 27 March to 20 April 2018: stations that set records in the event
StationTypeValueDate
Bodie California St Historic PRecord high minimum temperature6.7 C (44.1 F)2018-04-07
Hachita 1WRecord high minimum temperature20.0 C (68.0 F)2018-04-06
LoaRecord high minimum temperature8.9 C (48.0 F)2018-04-12
BridgeportRecord high minimum temperature8.9 C (48.0 F)2018-04-07
DarbyRecord high minimum temperature11.7 C (53.1 F)2018-04-10
Mancos 1SWRecord high minimum temperature7.2 C (45.0 F)2018-04-17
San SimonRecord high maximum temperature36.7 C (98.1 F)2018-04-11
DulceRecord high minimum temperature7.8 C (46.0 F)2018-04-08
FillmoreRecord high minimum temperature12.2 C (54.0 F)2018-04-02
Ft Bragg 5 NRecord high minimum temperature11.7 C (53.1 F)2018-04-07
Wittmann 1SERecord high minimum temperature18.9 C (66.0 F)2018-04-08
Casa Grande NmRecord high minimum temperature17.2 C (63.0 F)2018-04-06
Austin #2Record high minimum temperature11.7 C (53.1 F)2018-04-07
MeadeRecord high maximum temperature35.6 C (96.1 F)2018-04-13
Watsonville Wtr WksRecord high maximum temperature29.4 C (84.9 F)2018-03-30
Mecca Fire STNRecord high minimum temperature18.3 C (64.9 F)2018-04-03
ScipioRecord high minimum temperature10.6 C (51.1 F)2018-04-11

Records per Day

Peak day 223
Records per day during Heat wave in United States and Mexico, 27 March to 20 April 2018 Records set or tied each day from 27 March 2018 to 20 April 2018. The most in one day was 223 on 11 April 2018. 0 63 125 188 250 03-2703-3004-0204-0504-0804-1104-1404-1704-20
Records set or tied each day from 27 March 2018 to 20 April 2018. The most in one day was 223 on 11 April 2018.
Records per day during Heat wave in United States and Mexico, 27 March to 20 April 2018
DateRecords
2018-03-272
2018-03-2812
2018-03-2916
2018-03-3023
2018-03-3120
2018-04-0151
2018-04-0228
2018-04-0311
2018-04-048
2018-04-0546
2018-04-06162
2018-04-07192
2018-04-0895
2018-04-0947
2018-04-1067
2018-04-11223
2018-04-12157
2018-04-13138
2018-04-14109
2018-04-1578
2018-04-1650
2018-04-1726
2018-04-189
2018-04-196
2018-04-202

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in United States and Mexico, 27 March to 20 April 2018 ranked by margin
Bridgeport, 04-077.2 C (13.0 F)
Hachita 1W, 04-066.7 C (12.1 F)
Darby, 04-125.0 C (9.0 F)
Loa, 04-124.5 C (8.1 F)
Wittmann 1SE, 04-084.5 C (8.1 F)
Mancos 1SW, 04-173.9 C (7.0 F)
Scipio, 04-113.9 C (7.0 F)
San Simon, 04-113.4 C (6.1 F)
Meade, 04-133.4 C (6.1 F)
Fillmore, 04-023.3 C (5.9 F)
Bodie California St Historic P, 04-072.8 C (5.0 F)
Dulce, 04-082.8 C (5.0 F)
Austin #2, 04-072.3 C (4.1 F)
Casa Grande Nm, 04-062.2 C (4.0 F)
Ft Bragg 5 N, 04-071.7 C (3.1 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 Heat wave in United States and Mexico, 27 March to 20 April 2018 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 0.02.04.06.08.0 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 Heat wave in United States and Mexico, 27 March to 20 April 2018
Margin (C)Years the old record stood
2.8120
6.795
4.5109
7.283
3.9107
1.191
3.4111
2.8111
4.588
1.7121
3.396
2.2104
3.4121
5.076
2.3104
1.6104
1.6108
1.7108
1.7111
3.988
2.887
1.7107
5.072
2.867
1.6104
1.1100
1.1117
1.1124
1.7105
0.6101
0.5113
0.5100
0.5100
0.6104
1.196
2.877
0.6111
0.6107
0.5121
0.5104
0.6121
0.5111
1.788
1.1121
0.6113
1.1105
0.6113
0.6119
1.684
1.192
0.6118
1.792
6.747
1.193
1.195
1.784
0.5108
0.5121
6.155
1.685
1.192
2.279
0.593
0.692
1.187
1.663
1.788
0.592
0.592
2.881
1.788
5.055
2.279
2.277
1.777
2.285
1.184
0.592
5.672
1.188
0.688
3.968
1.684
1.781
0.588
2.275
0.688
1.787
3.372
1.184
1.681
3.872
3.359
0.684
0.688
0.584
0.687
2.345
3.372
6.145
4.464
1.177
0.587
1.181
0.679
1.776
1.676
2.272
2.280
5.056
0.584
2.864
1.179
1.176
2.272
3.468
4.448
2.772
0.676
0.681
1.672
1.768
3.957
2.860
3.940
2.255
2.257
0.676
1.772
1.772
0.575
0.676
0.576
0.676
1.280
0.676
1.172
0.672
1.169
0.672
1.168
2.256
1.768
0.672
1.172
2.255
1.176
0.672
2.259
1.772
6.153
2.868
0.668
1.173
2.261
0.667
1.757
6.136
1.768
0.572
0.672
0.672
1.757
0.668
5.640
2.856
2.256
0.676
0.672
0.668
5.041
2.255
0.668
4.448
2.845
0.672
2.247
1.757
2.249
1.755
1.755
4.532
3.936
2.863
5.645
3.940
0.665
1.272
1.272
4.449
1.160
3.949
2.844
2.245
2.857
0.672
1.764
3.949
1.157
2.849

Compared With Other Events

Station records per event
Station records in Heat wave in United States and Mexico, 27 March to 20 April 2018 compared with similar events
Heat wave in United States and Mexico, 16 January to 14 February 20249,869 records
Heat wave in United States, 28 January to 24 February 20266,528 records
Heat wave in United States and Mexico, 24 May to 19 June 20205,047 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Heat wave in United States and Mexico, 27 March to 20 April 2018 (this event)1,578 records

Every Record Set

20 of 1,578
Every record set or tied during Heat wave in United States and Mexico, 27 March to 20 April 2018, in date order
DateStationRecordValueMarginYears stoodSignificance
2018-03-30Watsonville Wtr WksRecord high maximum temperature29.4 C (84.9 F)1.6 C (2.9 F)10844 of 100 (Notable)
2018-04-02FillmoreRecord high minimum temperature12.2 C (54.0 F)3.3 C (5.9 F)9646 of 100 (Notable)
2018-04-03Mecca Fire STNRecord high minimum temperature18.3 C (64.9 F)1.6 C (2.9 F)10444 of 100 (Notable)
2018-04-03DulceRecord high minimum temperature6.1 C (43.0 F)1.7 C (3.1 F)10844 of 100 (Notable)
2018-04-06Hachita 1WRecord high minimum temperature20.0 C (68.0 F)6.7 C (12.1 F)9553 of 100 (Notable)
2018-04-06Casa Grande NmRecord high minimum temperature17.2 C (63.0 F)2.2 C (4.0 F)10445 of 100 (Notable)
2018-04-07Bodie California St Historic PRecord high minimum temperature6.7 C (44.1 F)2.8 C (5.0 F)12056 of 100 (Notable)
2018-04-07BridgeportRecord high minimum temperature8.9 C (48.0 F)7.2 C (13.0 F)8350 of 100 (Notable)
2018-04-07Ft Bragg 5 NRecord high minimum temperature11.7 C (53.1 F)1.7 C (3.1 F)12146 of 100 (Notable)
2018-04-07Austin #2Record high minimum temperature11.7 C (53.1 F)2.3 C (4.1 F)10445 of 100 (Notable)
2018-04-07DulceRecord high minimum temperature7.8 C (46.0 F)1.7 C (3.1 F)11144 of 100 (Notable)
2018-04-08DulceRecord high minimum temperature7.8 C (46.0 F)2.8 C (5.0 F)11147 of 100 (Notable)
2018-04-08Wittmann 1SERecord high minimum temperature18.9 C (66.0 F)4.5 C (8.1 F)8846 of 100 (Notable)
2018-04-10DarbyRecord high minimum temperature11.7 C (53.1 F)1.1 C (2.0 F)9150 of 100 (Notable)
2018-04-11San SimonRecord high maximum temperature36.7 C (98.1 F)3.4 C (6.1 F)11148 of 100 (Notable)
2018-04-11ScipioRecord high minimum temperature10.6 C (51.1 F)3.9 C (7.0 F)8844 of 100 (Notable)
2018-04-12LoaRecord high minimum temperature8.9 C (48.0 F)4.5 C (8.1 F)10951 of 100 (Notable)
2018-04-12DarbyRecord high minimum temperature11.1 C (52.0 F)5.0 C (9.0 F)7645 of 100 (Notable)
2018-04-13MeadeRecord high maximum temperature35.6 C (96.1 F)3.4 C (6.1 F)12145 of 100 (Notable)
2018-04-17Mancos 1SWRecord high minimum temperature7.2 C (45.0 F)3.9 C (7.0 F)10750 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 1,578 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 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.