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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 2 other countries, 24 February to 3 March 2021

Heat wave in United States and 2 other countries, 24 February to 3 March 2021: 299 records at 241 stations, peak on 28 February 2021. Closed.

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

Key Facts

  • Heat wave in United States and 2 other countries, 24 February to 3 March 2021 set or tied 299 station records at 241 stations.
  • It ran from 24 February 2021 to 3 March 2021 (8 days) and its peak day was 28 February 2021.
  • Status: closed.
  • Tellico Plains set a daily record high minimum temperature of 13.9 C (57.0 F) on 27 February 2021.
  • The busiest day was 28 February 2021 with 131 records.
  • The oldest broken record in the ranked list had stood for 118 years.

Footprint

24 February to 3 March 2021
Footprint of Heat wave in United States and 2 other countries, 24 February to 3 March 2021 The area covered by Heat wave in United States and 2 other countries, 24 February to 3 March 2021 is outlined, with 19 of the stations that set records marked, coloured by record type.
The area covered by Heat wave in United States and 2 other countries, 24 February to 3 March 2021 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 and 2 other countries, 24 February to 3 March 2021: stations that set records in the event
StationTypeValueDate
Tellico PlainsRecord high minimum temperature13.9 C (57.0 F)2021-02-27
Valley HeadRecord high minimum temperature15.6 C (60.1 F)2021-02-28
Summerville 4WRecord high minimum temperature18.3 C (64.9 F)2021-03-01
Orlando Executive APRecord high minimum temperature22.2 C (72.0 F)2021-03-01
Greeneville Exp STNRecord high minimum temperature12.8 C (55.0 F)2021-03-01
GreensboroRecord high maximum temperature28.9 C (84.0 F)2021-03-01
Yemassee 1 NRecord high minimum temperature18.3 C (64.9 F)2021-03-01
Hot SpringsRecord high minimum temperature7.8 C (46.0 F)2021-03-01
Newport 1 NWRecord high maximum temperature25.0 C (77.0 F)2021-02-28
Anniston Metro APRecord high minimum temperature16.1 C (61.0 F)2021-02-28
SelmaRecord high minimum temperature18.9 C (66.0 F)2021-03-01
Deland 1 SSERecord high maximum temperature31.1 C (88.0 F)2021-03-01
Plant CityRecord high minimum temperature21.7 C (71.1 F)2021-03-01
BatesburgRecord high maximum temperature27.8 C (82.0 F)2021-03-01
Knoxville APRecord high maximum temperature23.9 C (75.0 F)2021-02-28
Inverness 3 SERecord high maximum temperature32.2 C (90.0 F)2021-03-01
Daytona BeachRecord high minimum temperature20.0 C (68.0 F)2021-02-28
BloomingdaleRecord high minimum temperature1.7 C (35.1 F)2021-02-28
TalladegaRecord high maximum temperature27.2 C (81.0 F)2021-03-01

Records per Day

Peak day 131
Records per day during Heat wave in United States and 2 other countries, 24 February to 3 March 2021 Records set or tied each day from 24 February 2021 to 3 March 2021. The most in one day was 131 on 28 February 2021. 0 38 75 113 150 02-2402-2502-2602-2702-2803-0103-0203-03
Records set or tied each day from 24 February 2021 to 3 March 2021. The most in one day was 131 on 28 February 2021.
Records per day during Heat wave in United States and 2 other countries, 24 February to 3 March 2021
DateRecords
2021-02-243
2021-02-2510
2021-02-269
2021-02-2728
2021-02-28131
2021-03-01113
2021-03-024
2021-03-031

Top Records by Margin

Margin over the record replaced
Top records of Heat wave in United States and 2 other countries, 24 February to 3 March 2021 ranked by margin
Tellico Plains, 02-273.3 C (5.9 F)
Valley Head, 02-282.8 C (5.0 F)
Summerville 4W, 03-012.2 C (4.0 F)
Orlando Executive AP, 03-012.2 C (4.0 F)
Greeneville Exp STN, 03-012.2 C (4.0 F)
Tellico Plains, 02-281.7 C (3.1 F)
Yemassee 1 N, 03-011.6 C (2.9 F)
Greensboro, 03-011.1 C (2.0 F)
Hot Springs, 03-011.1 C (2.0 F)
Batesburg, 03-011.1 C (2.0 F)
Newport 1 NW, 02-281.1 C (2.0 F)
Anniston Metro AP, 02-281.1 C (2.0 F)
Selma, 03-010.6 C (1.1 F)
Plant City, 03-010.6 C (1.1 F)
Knoxville AP, 02-280.6 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 Heat wave in United States and 2 other countries, 24 February to 3 March 2021 299 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
299 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 2 other countries, 24 February to 3 March 2021
Margin (C)Years the old record stood
3.3118
2.8103
2.2111
2.2108
2.2116
1.1104
1.6103
1.7117
1.1111
0.6116
0.5108
0.6108
1.1103
1.1103
1.1118
0.599
0.6103
0.692
0.588
0.689
2.870
1.777
1.677
0.582
1.159
3.970
1.159
0.559
2.273
1.177
2.273
1.682
0.577
0.677
0.677
1.172
2.266
1.773
0.672
2.366
0.577
2.230
0.676
3.364
0.673
2.766
1.666
2.266
1.773
0.570
1.166
1.170
0.568
2.766
1.168
2.860
1.170
2.859
1.170
1.162
1.765
2.259
0.670
1.170
0.673
2.266
0.570
0.659
2.248
0.666
1.166
2.859
1.760
1.165
1.160
0.631
1.166
1.166
0.660
0.562
0.663
0.659
0.560
0.666
5.025
0.559
0.566
0.559
0.659
1.159
1.159
0.644
1.244
1.159
0.650
0.559
0.559
0.559
0.559
6.624
3.340
1.640
0.545
2.245
1.150
0.622
1.649
1.148
1.248
1.144
1.744
0.251
0.649
0.548
0.649
2.240
0.540
4.524
3.424
1.145
1.132
0.644
0.544
0.534
5.024
2.340
1.140
1.140
5.024
1.140
0.634
0.640
1.624
3.926
0.544
0.640
1.140
0.644
1.224
0.624
0.542
0.640
0.645
1.724
1.124
1.140
0.624
1.140
2.723
0.640
2.224
1.718
2.324
2.224
2.614
1.725
0.520
0.524
0.634
0.540
3.48
1.134
0.624
0.621
0.132
2.714
1.124
0.618
1.710
0.624
1.726
2.224
0.624
1.624
0.624
1.124
0.524
0.526
0.625
1.120
0.624
2.225
1.726
2.23
1.724
1.722
4.44
2.24
1.120
1.224
2.225
0.624
2.224
2.224
0.624
1.224
0.524
1.126
1.226
0.68

Compared With Other Events

Station records per event
Station records in Heat wave in United States and 2 other countries, 24 February to 3 March 2021 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 2 other countries, 24 February to 3 March 2021 (this event)299 records

Every Record Set

20 of 299
Every record set or tied during Heat wave in United States and 2 other countries, 24 February to 3 March 2021, in date order
DateStationRecordValueMarginYears stoodSignificance
2021-02-27Tellico PlainsRecord high minimum temperature13.9 C (57.0 F)3.3 C (5.9 F)11845 of 100 (Notable)
2021-02-28Valley HeadRecord high minimum temperature15.6 C (60.1 F)2.8 C (5.0 F)10344 of 100 (Notable)
2021-02-28Tellico PlainsRecord high minimum temperature12.8 C (55.0 F)1.7 C (3.1 F)11742 of 100 (Notable)
2021-02-28Newport 1 NWRecord high maximum temperature25.0 C (77.0 F)1.1 C (2.0 F)10341 of 100 (Notable)
2021-02-28Anniston Metro APRecord high minimum temperature16.1 C (61.0 F)1.1 C (2.0 F)11841 of 100 (Notable)
2021-02-28Knoxville APRecord high maximum temperature23.9 C (75.0 F)0.6 C (1.1 F)10340 of 100 (Notable)
2021-02-28Daytona BeachRecord high minimum temperature20.0 C (68.0 F)0.6 C (1.1 F)9237 of 100 (Notable)
2021-02-28BloomingdaleRecord high minimum temperature1.7 C (35.1 F)0.6 C (1.1 F)8936 of 100 (Notable)
2021-03-01Summerville 4WRecord high minimum temperature18.3 C (64.9 F)2.2 C (4.0 F)11144 of 100 (Notable)
2021-03-01Orlando Executive APRecord high minimum temperature22.2 C (72.0 F)2.2 C (4.0 F)10844 of 100 (Notable)
2021-03-01Greeneville Exp STNRecord high minimum temperature12.8 C (55.0 F)2.2 C (4.0 F)11643 of 100 (Notable)
2021-03-01GreensboroRecord high maximum temperature28.9 C (84.0 F)1.1 C (2.0 F)10442 of 100 (Notable)
2021-03-01Yemassee 1 NRecord high minimum temperature18.3 C (64.9 F)1.6 C (2.9 F)10342 of 100 (Notable)
2021-03-01Hot SpringsRecord high minimum temperature7.8 C (46.0 F)1.1 C (2.0 F)11142 of 100 (Notable)
2021-03-01SelmaRecord high minimum temperature18.9 C (66.0 F)0.6 C (1.1 F)11641 of 100 (Notable)
2021-03-01Deland 1 SSERecord high maximum temperature31.1 C (88.0 F)0.5 C (0.9 F)10841 of 100 (Notable)
2021-03-01Plant CityRecord high minimum temperature21.7 C (71.1 F)0.6 C (1.1 F)10841 of 100 (Notable)
2021-03-01BatesburgRecord high maximum temperature27.8 C (82.0 F)1.1 C (2.0 F)10341 of 100 (Notable)
2021-03-01Inverness 3 SERecord high maximum temperature32.2 C (90.0 F)0.5 C (0.9 F)9940 of 100 (Notable)
2021-03-01TalladegaRecord high maximum temperature27.2 C (81.0 F)0.5 C (0.9 F)8836 of 100 (Notable)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 299 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.