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Built 2026-10-19 (19 October 2026)

Heat wave in United States, 8 to 20 May 2024

Heat wave in United States, 8 to 20 May 2024: 218 records at 165 stations, peak on 11 May 2024. Closed.

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

Key Facts

  • Heat wave in United States, 8 to 20 May 2024 set or tied 218 station records at 165 stations.
  • It ran from 8 May 2024 to 20 May 2024 (13 days) and its peak day was 11 May 2024.
  • Status: closed.
  • Forest Grove set a daily record high minimum temperature of 13.3 C (55.9 F) on 9 May 2024.
  • The busiest day was 10 May 2024 with 57 records.
  • The oldest broken record in the ranked list had stood for 125 years.

Footprint

8 to 20 May 2024
Footprint of Heat wave in United States, 8 to 20 May 2024 The area covered by Heat wave in United States, 8 to 20 May 2024 is outlined, with 19 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in United States, 8 to 20 May 2024 is outlined, with 19 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in United States, 8 to 20 May 2024: stations that set records in the event
StationTypeValueDate
Forest GroveRecord high minimum temperature13.3 C (55.9 F)2024-05-09
Ft Bragg 5 NRecord high maximum temperature25.0 C (77.0 F)2024-05-10
Kalispell Glacier APRecord high minimum temperature13.9 C (57.0 F)2024-05-16
BrookingsRecord high maximum temperature27.2 C (81.0 F)2024-05-11
Port Orford #2Record high maximum temperature25.6 C (78.1 F)2024-05-10
Eureka WFO Woodley IsRecord high maximum temperature24.4 C (75.9 F)2024-05-10
ProsserRecord high minimum temperature16.1 C (61.0 F)2024-05-13
ClearbrookRecord high minimum temperature13.3 C (55.9 F)2024-05-17
SonomaRecord high minimum temperature17.8 C (64.0 F)2024-05-09
Cottage Grove 2ERecord high maximum temperature31.1 C (88.0 F)2024-05-12
Grass RangeRecord high minimum temperature12.2 C (54.0 F)2024-05-16
CloverdaleRecord high maximum temperature28.9 C (84.0 F)2024-05-10
Arcata Eureka APRecord high maximum temperature25.6 C (78.1 F)2024-05-10
FairfieldRecord high minimum temperature20.0 C (68.0 F)2024-05-09
Carson CityRecord high minimum temperature13.3 C (55.9 F)2024-05-18
Dallas 2 NERecord high minimum temperature12.2 C (54.0 F)2024-05-10
Hungry Horse DamRecord high minimum temperature11.1 C (52.0 F)2024-05-16
Rock Springs APRecord high minimum temperature9.4 C (48.9 F)2024-05-17
BredetteRecord high minimum temperature15.0 C (59.0 F)2024-05-11

Records per Day

Peak day 54
Records per day during Heat wave in United States, 8 to 20 May 2024 Records set or tied each day from 8 May 2024 to 20 May 2024. The most in one day was 57 on 10 May 2024. 0 15 30 45 60 05-0805-1005-1205-1405-1605-1805-20
Records set or tied each day from 8 May 2024 to 20 May 2024. The most in one day was 57 on 10 May 2024.
Records per day during Heat wave in United States, 8 to 20 May 2024
DateRecords
2024-05-081
2024-05-0912
2024-05-1057
2024-05-1154
2024-05-1218
2024-05-1314
2024-05-147
2024-05-1512
2024-05-1622
2024-05-179
2024-05-187
2024-05-194
2024-05-201

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in United States, 8 to 20 May 2024 ranked by margin
Arcata Eureka AP, 05-107.3 C (13.1 F)
Port Orford #2, 05-105.6 C (10.1 F)
Sonoma, 05-095.0 C (9.0 F)
Arcata Eureka AP, 05-095.0 C (9.0 F)
Fairfield, 05-093.9 C (7.0 F)
Brookings, 05-113.3 C (5.9 F)
Eureka WFO Woodley Is, 05-103.3 C (5.9 F)
Forest Grove, 05-092.2 C (4.0 F)
Ft Bragg 5 N, 05-102.2 C (4.0 F)
Prosser, 05-131.7 C (3.1 F)
Bredette, 05-111.7 C (3.1 F)
Kalispell Glacier AP, 05-161.1 C (2.0 F)
Cloverdale, 05-101.1 C (2.0 F)
Carson City, 05-181.1 C (2.0 F)
Clearbrook, 05-170.5 C (0.9 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, 8 to 20 May 2024 218 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
218 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, 8 to 20 May 2024
Margin (C)Years the old record stood
2.2101
2.283
1.1125
3.383
5.653
0.5103
1.793
3.364
5.043
0.590
0.593
1.178
7.38
3.937
1.168
5.031
0.575
0.567
0.576
1.766
0.650
1.150
1.153
1.753
1.749
0.555
1.754
4.536
2.738
2.834
3.43
1.737
0.652
0.655
1.151
6.15
5.03
1.140
1.148
1.127
2.36
1.130
1.137
1.144
2.230
1.127
0.537
2.210
1.730
4.514
1.127
1.137
2.227
3.331
0.531
1.123
1.120
3.91
0.537
0.630
1.631
0.628
0.518
3.91
0.627
1.131
2.84
1.131
0.637
2.427
1.231
1.627
0.633
1.78
1.127
1.728
0.637
1.136
2.88
1.227
1.030
0.537
1.130
0.525
0.529
1.114
0.530
1.127
1.75
1.65
2.26
1.228
1.125
1.127
2.85
0.731
0.630
2.019
0.630
1.030
1.123
2.25
0.629
2.81
1.15
1.15
2.118
2.816
2.223
0.631
0.630
1.627
0.627
1.627
0.332
1.719
0.831
1.031
0.431
0.727
0.618
0.618
0.623
0.627
3.94
0.527
0.527
3.57
0.231
0.516
0.611
1.75
1.123
2.212
1.816
2.25
0.918
0.327
1.15
0.618
0.611
2.14
1.95
0.918
1.11
0.55
1.15
0.65
0.65
0.516
1.11
0.55
0.68
2.35
1.216
1.611
2.35
1.911
0.718
1.011
1.14
0.53
0.519
0.511
0.611
0.615
0.511
1.75
1.15
1.013
1.87
0.219
0.811
1.011
0.716
0.911
0.611
1.75
0.55
0.55
1.15
0.611
1.15
1.15
1.15
0.611
0.511
0.312
0.612
0.411
1.05
0.111
0.55
0.510
1.24
0.55
0.211
0.95
1.17
0.72

Compared With Other Events

Station records per event
Station records in Heat wave in United States, 8 to 20 May 2024 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, 8 to 20 May 2024 (this event)218 records

Every Record Set

20 of 218
Every record set or tied during Heat wave in United States, 8 to 20 May 2024, in date order
DateStationRecordValueMarginYears stoodSignificance
2024-05-09Forest GroveRecord high minimum temperature13.3 C (55.9 F)2.2 C (4.0 F)10146 of 100 (Notable)
2024-05-09SonomaRecord high minimum temperature17.8 C (64.0 F)5.0 C (9.0 F)4338 of 100 (Notable)
2024-05-09FairfieldRecord high minimum temperature20.0 C (68.0 F)3.9 C (7.0 F)3732 of 100 (Routine)
2024-05-09Arcata Eureka APRecord high maximum temperature24.4 C (75.9 F)5.0 C (9.0 F)3131 of 100 (Routine)
2024-05-10Ft Bragg 5 NRecord high maximum temperature25.0 C (77.0 F)2.2 C (4.0 F)8343 of 100 (Notable)
2024-05-10Port Orford #2Record high maximum temperature25.6 C (78.1 F)5.6 C (10.1 F)5341 of 100 (Notable)
2024-05-10Eureka WFO Woodley IsRecord high maximum temperature24.4 C (75.9 F)3.3 C (5.9 F)6441 of 100 (Notable)
2024-05-10CloverdaleRecord high maximum temperature28.9 C (84.0 F)1.1 C (2.0 F)7834 of 100 (Routine)
2024-05-10Arcata Eureka APRecord high maximum temperature25.6 C (78.1 F)7.3 C (13.1 F)833 of 100 (Routine)
2024-05-10Dallas 2 NERecord high minimum temperature12.2 C (54.0 F)0.5 C (0.9 F)6730 of 100 (Routine)
2024-05-11BrookingsRecord high maximum temperature27.2 C (81.0 F)3.3 C (5.9 F)8342 of 100 (Notable)
2024-05-11BredetteRecord high minimum temperature15.0 C (59.0 F)1.7 C (3.1 F)6629 of 100 (Routine)
2024-05-12Cottage Grove 2ERecord high maximum temperature31.1 C (88.0 F)0.5 C (0.9 F)9338 of 100 (Notable)
2024-05-13ProsserRecord high minimum temperature16.1 C (61.0 F)1.7 C (3.1 F)9341 of 100 (Notable)
2024-05-16Kalispell Glacier APRecord high minimum temperature13.9 C (57.0 F)1.1 C (2.0 F)12543 of 100 (Notable)
2024-05-16Grass RangeRecord high minimum temperature12.2 C (54.0 F)0.5 C (0.9 F)9038 of 100 (Notable)
2024-05-16Hungry Horse DamRecord high minimum temperature11.1 C (52.0 F)0.5 C (0.9 F)7530 of 100 (Routine)
2024-05-17ClearbrookRecord high minimum temperature13.3 C (55.9 F)0.5 C (0.9 F)10341 of 100 (Notable)
2024-05-17Rock Springs APRecord high minimum temperature9.4 C (48.9 F)0.5 C (0.9 F)7630 of 100 (Routine)
2024-05-18Carson CityRecord high minimum temperature13.3 C (55.9 F)1.1 C (2.0 F)6832 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 218 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.