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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, 25 March to 8 April 2025

Heat wave in United States, 25 March to 8 April 2025: 220 records at 72 stations, peak on 5 April 2025. Closed.

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

Key Facts

  • Heat wave in United States, 25 March to 8 April 2025 set or tied 220 station records at 72 stations.
  • It ran from 25 March 2025 to 8 April 2025 (15 days) and its peak day was 5 April 2025.
  • Status: closed.
  • Seward AP set a daily record high maximum temperature of 15.6 C (60.1 F) on 1 April 2025.
  • The busiest day was 5 April 2025 with 48 records.
  • The oldest broken record in the ranked list had stood for 120 years.

Footprint

25 March to 8 April 2025
Footprint of Heat wave in United States, 25 March to 8 April 2025 The area covered by Heat wave in United States, 25 March to 8 April 2025 is outlined, with 12 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in United States, 25 March to 8 April 2025 is outlined, with 12 of the stations that set records marked, coloured by record type. Made with Natural Earth.
Footprint of Heat wave in United States, 25 March to 8 April 2025: stations that set records in the event
StationTypeValueDate
Seward APRecord high maximum temperature15.6 C (60.1 F)2025-04-01
Kodiak APRecord high maximum temperature17.8 C (64.0 F)2025-04-01
Kitoi BayRecord high maximum temperature15.6 C (60.1 F)2025-04-01
Kenai APRecord high maximum temperature13.9 C (57.0 F)2025-04-03
Yakutat APRecord high minimum temperature6.1 C (43.0 F)2025-04-06
Yakataga APRecord high minimum temperature4.4 C (39.9 F)2025-04-05
Dillingham FAA APRecord high maximum temperature10.6 C (51.1 F)2025-04-03
Anchorage Merrill FldRecord high maximum temperature13.3 C (55.9 F)2025-04-03
McKinley ParkRecord high minimum temperature3.3 C (37.9 F)2025-04-05
Homer APRecord high maximum temperature10.0 C (50.0 F)2025-03-27
Haines APRecord high maximum temperature14.4 C (57.9 F)2025-04-02
WisemanRecord high minimum temperature-4.4 C (24.1 F)2025-04-06

Records per Day

Peak day 48
Records per day during Heat wave in United States, 25 March to 8 April 2025 Records set or tied each day from 25 March 2025 to 8 April 2025. The most in one day was 48 on 5 April 2025. 0 13 25 38 50 03-2503-2703-2903-3104-0204-0404-0604-08
Records set or tied each day from 25 March 2025 to 8 April 2025. The most in one day was 48 on 5 April 2025.
Records per day during Heat wave in United States, 25 March to 8 April 2025
DateRecords
2025-03-253
2025-03-264
2025-03-275
2025-03-289
2025-03-293
2025-03-303
2025-03-315
2025-04-0115
2025-04-0221
2025-04-0338
2025-04-0446
2025-04-0548
2025-04-0617
2025-04-072
2025-04-081

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in United States, 25 March to 8 April 2025 ranked by margin
Kodiak AP, 04-016.1 C (11.0 F)
Kitoi Bay, 04-015.6 C (10.1 F)
Yakataga AP, 04-033.9 C (7.0 F)
Yakataga AP, 04-043.9 C (7.0 F)
Seward AP, 04-013.4 C (6.1 F)
Yakataga AP, 04-053.3 C (5.9 F)
Kodiak AP, 04-012.8 C (5.0 F)
McKinley Park, 04-052.7 C (4.9 F)
Wiseman, 04-062.3 C (4.1 F)
Yakutat AP, 04-062.2 C (4.0 F)
Yakutat AP, 04-072.2 C (4.0 F)
Anchorage Merrill Fld, 04-032.2 C (4.0 F)
Kenai AP, 04-031.7 C (3.1 F)
Dillingham FAA AP, 04-041.6 C (2.9 F)
Dillingham FAA AP, 04-031.2 C (2.2 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, 25 March to 8 April 2025 220 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
220 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, 25 March to 8 April 2025
Margin (C)Years the old record stood
3.4111
6.171
5.663
2.294
2.294
1.7120
0.6111
3.374
1.299
2.792
2.287
1.191
1.684
2.384
1.184
0.691
0.684
2.871
3.944
3.944
5.631
0.676
1.768
1.180
1.171
1.774
2.354
1.167
0.668
2.242
1.163
1.160
2.259
1.959
0.667
0.667
0.467
0.567
0.656
2.858
1.163
3.330
1.644
2.244
1.758
1.158
0.663
1.155
2.742
0.658
1.742
0.558
0.463
5.031
2.230
0.544
0.642
2.220
5.030
1.144
1.142
1.148
1.644
2.828
2.736
2.814
3.98
2.234
4.431
0.644
1.144
3.931
1.635
0.640
3.920
1.144
1.131
1.144
3.431
3.931
3.924
1.742
3.431
4.46
0.644
2.220
3.428
3.930
2.830
4.728
5.028
2.76
1.130
0.140
1.628
1.731
2.234
2.330
0.528
2.828
3.928
1.943
0.531
2.86
0.831
2.214
2.812
2.230
0.542
2.819
3.430
3.916
1.78
0.530
1.116
2.227
0.632
1.731
0.538
2.214
2.216
4.414
2.830
3.628
2.424
3.412
2.28
0.635
2.224
4.420
1.630
1.18
3.48
2.719
1.116
0.531
1.130
2.226
1.628
0.931
1.130
2.26
1.116
0.631
1.128
0.532
1.120
0.68
1.130
0.631
2.715
2.816
3.020
0.630
0.628
1.73
0.68
1.620
1.116
1.18
0.58
2.214
1.128
1.128
0.627
1.128
0.528
0.631
1.128
1.128
1.128
0.328
0.131
1.110
1.18
1.18
1.78
1.18
2.815
0.628
0.627
0.66
0.68
1.615
0.68
2.28
0.614
0.615
0.624
2.88
2.28
1.718
1.016
0.220
0.320
2.08
0.60
2.26
0.516
1.78

Compared With Other Events

Station records per event
Station records in Heat wave in United States, 25 March to 8 April 2025 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, 25 March to 8 April 2025 (this event)220 records

Every Record Set

20 of 220
Every record set or tied during Heat wave in United States, 25 March to 8 April 2025, in date order
DateStationRecordValueMarginYears stoodSignificance
2025-03-27Homer APRecord high maximum temperature10.0 C (50.0 F)0.6 C (1.1 F)9137 of 100 (Notable)
2025-03-31Dillingham FAA APRecord high maximum temperature7.8 C (46.0 F)1.1 C (2.0 F)9139 of 100 (Notable)
2025-04-01Seward APRecord high maximum temperature15.6 C (60.1 F)3.4 C (6.1 F)11150 of 100 (Notable)
2025-04-01Kodiak APRecord high maximum temperature17.8 C (64.0 F)6.1 C (11.0 F)7148 of 100 (Notable)
2025-04-01Kitoi BayRecord high maximum temperature15.6 C (60.1 F)5.6 C (10.1 F)6344 of 100 (Notable)
2025-04-01Kodiak APRecord high minimum temperature6.7 C (44.1 F)2.8 C (5.0 F)7136 of 100 (Notable)
2025-04-02Haines APRecord high maximum temperature14.4 C (57.9 F)1.1 C (2.0 F)8437 of 100 (Notable)
2025-04-03Kenai APRecord high maximum temperature13.9 C (57.0 F)1.7 C (3.1 F)12044 of 100 (Notable)
2025-04-03Dillingham FAA APRecord high maximum temperature10.6 C (51.1 F)1.2 C (2.2 F)9941 of 100 (Notable)
2025-04-03Anchorage Merrill FldRecord high maximum temperature13.3 C (55.9 F)2.2 C (4.0 F)8741 of 100 (Notable)
2025-04-03Yakataga APRecord high maximum temperature15.0 C (59.0 F)3.9 C (7.0 F)4436 of 100 (Notable)
2025-04-04Dillingham FAA APRecord high minimum temperature3.3 C (37.9 F)1.6 C (2.9 F)8438 of 100 (Notable)
2025-04-04Yakataga APRecord high maximum temperature13.9 C (57.0 F)3.9 C (7.0 F)4436 of 100 (Notable)
2025-04-05Seward APRecord high minimum temperature3.9 C (39.0 F)0.6 C (1.1 F)11142 of 100 (Notable)
2025-04-05Yakataga APRecord high minimum temperature4.4 C (39.9 F)3.3 C (5.9 F)7442 of 100 (Notable)
2025-04-05McKinley ParkRecord high minimum temperature3.3 C (37.9 F)2.7 C (4.9 F)9241 of 100 (Notable)
2025-04-06Yakutat APRecord high minimum temperature6.1 C (43.0 F)2.2 C (4.0 F)9444 of 100 (Notable)
2025-04-06WisemanRecord high minimum temperature-4.4 C (24.1 F)2.3 C (4.1 F)8437 of 100 (Notable)
2025-04-06McKinley ParkRecord high maximum temperature10.0 C (50.0 F)0.6 C (1.1 F)8436 of 100 (Notable)
2025-04-07Yakutat APRecord high minimum temperature6.1 C (43.0 F)2.2 C (4.0 F)9444 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 220 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.