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Data as of 2026-10-12
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Built 2026-10-14 (14 October 2026)

Extreme Weather Events in 2021

193 extreme weather events began in 2021, with 93,722 station records set across them, from heat waves to snow events.

Data as of . Last revised (2026-10-12).

Key Facts

  • 193 extreme weather events began in 2021, with 93,722 station records in total.
  • Heat waves: 51.
  • Cold outbreaks: 38.
  • Extreme rain events: 97.
  • Snow events: 7.

Events That Began in 2021

Events that began in 2021
EventTypeDatesRecordsStationsTop significance
Cold outbreak in United States, 24 December 2021 to 11 January 2022cold outbreak24 December 2021 to 11 January 20222,4221,04249 of 100 (Notable)
Extreme rain in United States, 23 to 31 December 2021extreme rain event23 to 31 December 202111810854 of 100 (Notable)
Extreme rain in Australia, 18 to 20 December 2021extreme rain event18 to 20 December 202113211364 of 100 (Major)
Extreme rain in United States and Mexico, 18 December 2021 to 4 January 2022extreme rain event18 December 2021 to 4 January 20221,12987780 of 100 (Exceptional)
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 2022heat wave18 December 2021 to 15 January 20223,62683453 of 100 (Notable)
Cold outbreak in Russia and 4 other countries, 16 to 31 December 2021cold outbreak16 to 31 December 20211867644 of 100 (Notable)
Extreme rain in United States and Mexico, 15 to 20 December 2021extreme rain event15 to 20 December 202121321068 of 100 (Major)
Heat wave in Russia and 8 other countries, 15 to 26 December 2021heat wave15 to 26 December 202122812147 of 100 (Notable)
Heat wave in United Kingdom and 17 other countries, 10 to 19 December 2021heat wave10 to 19 December 202127620941 of 100 (Notable)
Cold outbreak in United States, 9 to 20 December 2021cold outbreak9 to 20 December 202124018550 of 100 (Notable)
Extreme rain in United States, 8 to 17 December 2021extreme rain event8 to 17 December 202191682278 of 100 (Major)
Extreme rain in Australia, 4 to 12 December 2021extreme rain event4 to 12 December 202116816080 of 100 (Exceptional)
Heat wave in Turkey and 12 other countries, 4 to 16 December 2021heat wave4 to 16 December 20211126138 of 100 (Notable)
Heat wave in Russia and 8 other countries, 27 November to 13 December 2021heat wave27 November to 13 December 202162228345 of 100 (Notable)
Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021cold outbreak25 November to 10 December 202135115946 of 100 (Notable)
Heat wave in China and 4 other countries, 22 to 30 November 2021heat wave22 to 30 November 20211077428 of 100 (Routine)
Extreme rain in Australia, 20 to 23 November 2021extreme rain event20 to 23 November 202110410280 of 100 (Exceptional)
Cold outbreak in United States, 15 November to 1 December 2021cold outbreak15 November to 1 December 20211463541 of 100 (Notable)
Extreme rain in United States, 10 to 12 November 2021extreme rain event10 to 12 November 202118017681 of 100 (Exceptional)
Extreme rain in United States, 9 to 12 November 2021extreme rain event9 to 12 November 202111210768 of 100 (Major)
Cold outbreak in Australia, 7 to 23 November 2021cold outbreak7 to 23 November 202132615245 of 100 (Notable)
Heat wave in Russia and 2 other countries, 7 to 17 November 2021heat wave7 to 17 November 20211046540 of 100 (Notable)
Extreme rain in Australia, 3 to 15 November 2021extreme rain event3 to 15 November 20211,11990581 of 100 (Exceptional)
Cold outbreak in China and 8 other countries, 2 to 15 November 2021cold outbreak2 to 15 November 202137217447 of 100 (Notable)
Cold outbreak in United States, 2 to 9 November 2021cold outbreak2 to 9 November 202116013746 of 100 (Notable)
Heat wave in Germany and 27 other countries, 2 to 21 November 2021heat wave2 to 21 November 202145428443 of 100 (Notable)
Extreme rain in Germany and 8 other countries, 30 October to 8 November 2021extreme rain event30 October to 8 November 202120119390 of 100 (Exceptional)
Extreme rain in Australia, 28 October to 3 November 2021extreme rain event28 October to 3 November 20211099180 of 100 (Exceptional)
Extreme rain in Australia, 27 to 30 October 2021extreme rain event27 to 30 October 202126724380 of 100 (Exceptional)
Extreme rain in Australia, 25 to 29 October 2021extreme rain event25 to 29 October 202112411753 of 100 (Notable)
Heat wave in Finland and 19 other countries, 25 October to 10 November 2021heat wave25 October to 10 November 202153932950 of 100 (Notable)
Extreme rain in United States, 20 to 31 October 2021extreme rain event20 to 31 October 20211,6551,373100 of 100 (Exceptional)
Extreme rain in Australia, 18 to 21 October 2021extreme rain event18 to 21 October 202117816474 of 100 (Major)
Extreme rain in Netherlands and 8 other countries, 18 to 23 October 2021extreme rain event18 to 23 October 202141838578 of 100 (Major)
Extreme rain in United States, 18 to 21 October 2021extreme rain event18 to 21 October 202112512366 of 100 (Major)
Heat wave in Germany and 25 other countries, 16 to 22 October 2021heat wave16 to 22 October 202138731846 of 100 (Notable)
Heat wave in Russia and 4 other countries, 14 to 30 October 2021heat wave14 to 30 October 202137518748 of 100 (Notable)
Cold outbreak in Russia and 5 other countries, 13 to 26 October 2021cold outbreak13 to 26 October 202119413945 of 100 (Notable)
Extreme rain in Sweden and 3 other countries, 13 to 17 October 2021extreme rain event13 to 17 October 202116813069 of 100 (Major)
Heat wave in Australia, 12 October to 3 November 2021heat wave12 October to 3 November 20211626352 of 100 (Notable)
Snow event in United States, 11 to 21 October 2021snow event11 to 21 October 202145718776 of 100 (Major)
Extreme rain in Australia, 10 to 20 October 2021extreme rain event10 to 20 October 202147043080 of 100 (Exceptional)
Cold outbreak in Germany and 19 other countries, 8 to 16 October 2021cold outbreak8 to 16 October 202117013140 of 100 (Notable)
Cold outbreak in United States, 5 to 27 October 2021cold outbreak5 to 27 October 20211,61994958 of 100 (Notable)
Extreme rain in United States, 5 to 18 October 2021extreme rain event5 to 18 October 202198680780 of 100 (Exceptional)
Extreme rain in Sweden and 4 other countries, 4 to 7 October 2021extreme rain event4 to 7 October 202111011062 of 100 (Major)
Extreme rain in Netherlands and 4 other countries, 30 September to 6 October 2021extreme rain event30 September to 6 October 202122318563 of 100 (Major)
Extreme rain in Sweden and 5 other countries, 27 September to 5 October 2021extreme rain event27 September to 5 October 202129724169 of 100 (Major)
Extreme rain in Australia, 26 September to 8 October 2021extreme rain event26 September to 8 October 202156649680 of 100 (Exceptional)
Extreme rain in United States, 26 September to 1 October 2021extreme rain event26 September to 1 October 20211019854 of 100 (Notable)
Cold outbreak in United States, 24 September to 4 October 2021cold outbreak24 September to 4 October 202131224546 of 100 (Notable)
Extreme rain in United States, 23 September to 10 October 2021extreme rain event23 September to 10 October 202162355378 of 100 (Major)
Extreme rain in Sweden and 4 other countries, 22 to 24 September 2021extreme rain event22 to 24 September 202118716870 of 100 (Major)
Extreme rain in United States, 17 to 21 September 2021extreme rain event17 to 21 September 202116115057 of 100 (Notable)
Cold outbreak in Ukraine and 15 other countries, 16 to 25 September 2021cold outbreak16 to 25 September 202115411042 of 100 (Notable)
Cold outbreak in United States, 14 to 25 September 2021cold outbreak14 to 25 September 202116914655 of 100 (Notable)
Extreme rain in United States, 13 to 26 September 2021extreme rain event13 to 26 September 202159451880 of 100 (Exceptional)
Heat wave in Australia, 7 to 13 September 2021heat wave7 to 13 September 20211069242 of 100 (Notable)
Heat wave in China and 3 other countries, 5 to 15 September 2021heat wave5 to 15 September 20211397234 of 100 (Routine)
Extreme rain in Australia, 3 to 6 September 2021extreme rain event3 to 6 September 202129026480 of 100 (Exceptional)
Heat wave in Australia, 31 August to 4 September 2021heat wave31 August to 4 September 202123012553 of 100 (Notable)
Extreme rain in Australia, 22 to 28 August 2021extreme rain event22 to 28 August 202119217166 of 100 (Major)
Cold outbreak in Sweden and 14 other countries, 16 to 28 August 2021cold outbreak16 to 28 August 202118014940 of 100 (Notable)
Heat wave in Russia and 4 other countries, 14 August to 2 September 2021heat wave14 August to 2 September 202146515347 of 100 (Notable)
Extreme rain in Sweden and 10 other countries, 13 to 30 August 2021extreme rain event13 to 30 August 202150641780 of 100 (Exceptional)
Heat wave in Russia and China, 8 to 28 August 2021heat wave8 to 28 August 20212117543 of 100 (Notable)
Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021cold outbreak6 to 20 August 202124111242 of 100 (Notable)
Extreme rain in United States, 5 to 25 August 2021extreme rain event5 to 25 August 202185773480 of 100 (Exceptional)
Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021cold outbreak31 July to 6 August 202112711540 of 100 (Notable)
Extreme rain in Australia, 31 July to 5 August 2021extreme rain event31 July to 5 August 202110510152 of 100 (Notable)
Extreme rain in United States and Mexico, 31 July to 7 August 2021extreme rain event31 July to 7 August 202112211373 of 100 (Major)
Extreme rain in Netherlands and 16 other countries, 30 July to 12 August 2021extreme rain event30 July to 12 August 202123421872 of 100 (Major)
Heat wave in Australia, 27 July to 5 August 2021heat wave27 July to 5 August 20211282738 of 100 (Notable)
Heat wave in China and 2 other countries, 27 July to 13 August 2021heat wave27 July to 13 August 20213118438 of 100 (Notable)
Heat wave in Australia, 26 July to 4 August 2021heat wave26 July to 4 August 202127012642 of 100 (Notable)
Extreme rain in Sweden and 4 other countries, 24 July to 1 August 2021extreme rain event24 July to 1 August 202122620283 of 100 (Exceptional)
Extreme rain in Australia, 22 to 27 July 2021extreme rain event22 to 27 July 202111610362 of 100 (Major)
Extreme rain in Australia, 14 to 20 July 2021extreme rain event14 to 20 July 202120119068 of 100 (Major)
Heat wave in Australia, 12 to 19 July 2021heat wave12 to 19 July 20211088540 of 100 (Notable)
Extreme rain in United States, 11 July to 9 August 2021extreme rain event11 July to 9 August 20211,00171381 of 100 (Exceptional)
Extreme rain in Australia, 4 to 14 July 2021extreme rain event4 to 14 July 202113611583 of 100 (Exceptional)
Extreme rain in Germany and 12 other countries, 3 to 17 July 2021extreme rain event3 to 17 July 202135728894 of 100 (Exceptional)
Extreme rain in Australia, 29 June to 5 July 2021extreme rain event29 June to 5 July 202128925968 of 100 (Major)
Extreme rain in Germany and 8 other countries, 26 June to 3 July 2021extreme rain event26 June to 3 July 202123922380 of 100 (Exceptional)
Extreme rain in Australia, 22 to 28 June 2021extreme rain event22 to 28 June 202136233480 of 100 (Exceptional)
Extreme rain in United States, 18 to 24 June 2021extreme rain event18 to 24 June 202123522580 of 100 (Exceptional)
Heat wave in Russia, 18 June to 9 July 2021heat wave18 June to 9 July 20211074045 of 100 (Notable)
Extreme rain in Netherlands and 6 other countries, 16 to 26 June 2021extreme rain event16 to 26 June 202139933680 of 100 (Exceptional)
Extreme rain in Sweden and 4 other countries, 16 to 24 June 2021extreme rain event16 to 24 June 20211119767 of 100 (Major)
Extreme rain in Australia, 15 to 19 June 2021extreme rain event15 to 19 June 202118917875 of 100 (Major)
Extreme rain in Australia, 7 to 13 June 2021extreme rain event7 to 13 June 202139232580 of 100 (Exceptional)
Cold outbreak in United States, 6 to 16 June 2021cold outbreak6 to 16 June 202121418343 of 100 (Notable)
Heat wave in China and 2 other countries, 5 to 23 June 2021heat wave5 to 23 June 20211927535 of 100 (Notable)
Extreme rain in Germany and 5 other countries, 3 to 10 June 2021extreme rain event3 to 10 June 202111610781 of 100 (Exceptional)
Extreme rain in Australia, 1 to 5 June 2021extreme rain event1 to 5 June 202110510359 of 100 (Notable)
Heat wave in Russia and 5 other countries, 1 to 16 June 2021heat wave1 to 16 June 202128517541 of 100 (Notable)
Extreme rain in Australia, 28 May to 1 June 2021extreme rain event28 May to 1 June 202117415969 of 100 (Major)
Cold outbreak in Australia, 27 May to 14 June 2021cold outbreak27 May to 14 June 202123913948 of 100 (Notable)
Extreme rain in United States, 22 May to 15 June 2021extreme rain event22 May to 15 June 202186572380 of 100 (Exceptional)
Cold outbreak in United Kingdom and 11 other countries, 19 to 28 May 2021cold outbreak19 to 28 May 20211008443 of 100 (Notable)
Snow event in United States, 19 to 26 May 2021snow event19 to 26 May 20211836770 of 100 (Major)
Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021cold outbreak17 to 27 May 20211269340 of 100 (Notable)
Cold outbreak in United States, 14 May to 11 June 2021cold outbreak14 May to 11 June 20212,7201,69956 of 100 (Notable)
Extreme rain in United States, 14 to 27 May 2021extreme rain event14 to 27 May 202160251484 of 100 (Exceptional)
Heat wave in Japan and 5 other countries, 12 to 24 May 2021heat wave12 to 24 May 202130216843 of 100 (Notable)
Extreme rain in Sweden and 5 other countries, 9 to 24 May 2021extreme rain event9 to 24 May 202135126768 of 100 (Major)
Extreme rain in Australia, 8 to 14 May 2021extreme rain event8 to 14 May 202119818174 of 100 (Major)
Extreme rain in Sweden and 12 other countries, 8 to 27 May 2021extreme rain event8 to 27 May 202148338580 of 100 (Exceptional)
Extreme rain in United States, 8 to 14 May 2021extreme rain event8 to 14 May 202126325567 of 100 (Major)
Extreme rain in Australia, 4 to 8 May 2021extreme rain event4 to 8 May 202120415675 of 100 (Major)
Extreme rain in Australia, 3 to 7 May 2021extreme rain event3 to 7 May 202120619377 of 100 (Major)
Cold outbreak in United States, 2 to 25 May 2021cold outbreak2 to 25 May 20211,08279455 of 100 (Notable)
Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021extreme rain event30 April to 9 May 202119318354 of 100 (Notable)
Heat wave in Turkey and 19 other countries, 27 April to 13 May 2021heat wave27 April to 13 May 20211958748 of 100 (Notable)
Heat wave in Uzbekistan and 8 other countries, 26 April to 6 May 2021heat wave26 April to 6 May 20211257550 of 100 (Notable)
Extreme rain in United States, 23 to 26 April 2021extreme rain event23 to 26 April 202112312380 of 100 (Exceptional)
Extreme rain in United States and Mexico, 23 April to 6 May 2021extreme rain event23 April to 6 May 202166860880 of 100 (Exceptional)
Cold outbreak in Germany and 22 other countries, 22 April to 10 May 2021cold outbreak22 April to 10 May 202167040543 of 100 (Notable)
Extreme rain in Sweden and 3 other countries, 20 to 25 April 2021extreme rain event20 to 25 April 202113412558 of 100 (Notable)
Cold outbreak in Russia and 5 other countries, 18 to 25 April 2021cold outbreak18 to 25 April 20211067940 of 100 (Notable)
Extreme rain in Australia, 17 to 27 April 2021extreme rain event17 to 27 April 20211257980 of 100 (Exceptional)
Heat wave in Saudi Arabia and 10 other countries, 17 to 26 April 2021heat wave17 to 26 April 20211094155 of 100 (Notable)
Extreme rain in Australia, 16 to 20 April 2021extreme rain event16 to 20 April 202111711058 of 100 (Notable)
Heat wave in Russia and 4 other countries, 16 to 24 April 2021heat wave16 to 24 April 20211329243 of 100 (Notable)
Heat wave in United States, 16 to 28 April 2021heat wave16 to 28 April 20211536049 of 100 (Notable)
Heat wave in Finland and 6 other countries, 15 to 26 April 2021heat wave15 to 26 April 202118612050 of 100 (Notable)
Extreme rain in United States, 13 to 21 April 2021extreme rain event13 to 21 April 202111810058 of 100 (Notable)
Snow event in United States, 12 to 27 April 2021snow event12 to 27 April 20211,17268079 of 100 (Major)
Cold outbreak in Australia, 10 to 27 April 2021cold outbreak10 to 27 April 202130813742 of 100 (Notable)
Extreme rain in Australia, 9 to 15 April 2021extreme rain event9 to 15 April 202125623980 of 100 (Exceptional)
Extreme rain in Sweden and 5 other countries, 9 to 13 April 2021extreme rain event9 to 13 April 202128527862 of 100 (Major)
Heat wave in Russia and 7 other countries, 9 to 16 April 2021heat wave9 to 16 April 202117812634 of 100 (Routine)
Extreme rain in United States, 5 to 11 April 2021extreme rain event5 to 11 April 202139134764 of 100 (Major)
Heat wave in Russia and 3 other countries, 5 to 13 April 2021heat wave5 to 13 April 202112010241 of 100 (Notable)
Snow event in Germany and 3 other countries, 5 to 9 April 2021snow event5 to 9 April 202122517250 of 100 (Notable)
Cold outbreak in Germany and 25 other countries, 3 to 22 April 2021cold outbreak3 to 22 April 202183443454 of 100 (Notable)
Extreme rain in Australia, 3 to 8 April 2021extreme rain event3 to 8 April 202114913665 of 100 (Major)
Cold outbreak in United States, 1 to 13 April 2021cold outbreak1 to 13 April 20212516565 of 100 (Major)
Heat wave in Australia, 30 March to 9 April 2021heat wave30 March to 9 April 20211026449 of 100 (Notable)
Heat wave in Australia, 28 March to 7 April 2021heat wave28 March to 7 April 20211334145 of 100 (Notable)
Heat wave in United States and Mexico, 26 March to 17 April 2021heat wave26 March to 17 April 20213,6691,73359 of 100 (Notable)
Heat wave in Japan and 5 other countries, 21 March to 5 April 2021heat wave21 March to 5 April 202148022639 of 100 (Notable)
Heat wave in Germany and 33 other countries, 20 March to 6 April 2021heat wave20 March to 6 April 20211,70086553 of 100 (Notable)
Extreme rain in United States, 19 March to 2 April 2021extreme rain event19 March to 2 April 202186679580 of 100 (Exceptional)
Heat wave in Saudi Arabia and 10 other countries, 15 to 29 March 2021heat wave15 to 29 March 20211073631 of 100 (Routine)
Cold outbreak in Australia, 12 to 24 March 2021cold outbreak12 to 24 March 20211408640 of 100 (Notable)
Cold outbreak in Uzbekistan and 4 other countries, 12 to 17 March 2021cold outbreak12 to 17 March 20211134146 of 100 (Notable)
Heat wave in United States, 12 March to 1 April 2021heat wave12 March to 1 April 20211,03062553 of 100 (Notable)
Extreme rain in Sweden and 7 other countries, 9 to 15 March 2021extreme rain event9 to 15 March 202129326262 of 100 (Major)
Extreme rain in United States, 9 to 19 March 2021extreme rain event9 to 19 March 20211,15795384 of 100 (Exceptional)
Heat wave in Russia and 7 other countries, 9 to 23 March 2021heat wave9 to 23 March 202166232551 of 100 (Notable)
Snow event in United States, 9 to 30 March 2021snow event9 to 30 March 202166634679 of 100 (Major)
Extreme rain in Australia, 7 to 26 March 2021extreme rain event7 to 26 March 20212,0991,23680 of 100 (Exceptional)
Extreme rain in United States, 6 to 18 March 2021extreme rain event6 to 18 March 20211015172 of 100 (Major)
Cold outbreak in Russia and 6 other countries, 5 to 15 March 2021cold outbreak5 to 15 March 202137216848 of 100 (Notable)
Extreme rain in Australia, 1 to 8 March 2021extreme rain event1 to 8 March 202147829077 of 100 (Major)
Heat wave in United States and Mexico, 28 February to 21 March 2021heat wave28 February to 21 March 20212,1351,45350 of 100 (Notable)
Extreme rain in United States, 26 February to 1 March 2021extreme rain event26 February to 1 March 202134129979 of 100 (Major)
Heat wave in United States and 2 other countries, 24 February to 3 March 2021heat wave24 February to 3 March 202129924145 of 100 (Notable)
Cold outbreak in Australia, 22 February to 8 March 2021cold outbreak22 February to 8 March 20211177132 of 100 (Routine)
Extreme rain in United States, 20 February to 3 March 2021extreme rain event20 February to 3 March 20211058966 of 100 (Major)
Heat wave in United States, 20 to 25 February 2021heat wave20 to 25 February 20211008450 of 100 (Notable)
Extreme rain in Finland and 3 other countries, 19 to 27 February 2021extreme rain event19 to 27 February 202119715156 of 100 (Notable)
Cold outbreak in Russia and 9 other countries, 15 to 27 February 2021cold outbreak15 to 27 February 202142716842 of 100 (Notable)
Heat wave in China and 9 other countries, 13 February to 2 March 2021heat wave13 February to 2 March 202165025042 of 100 (Notable)
Heat wave in Japan and 3 other countries, 13 to 17 February 2021heat wave13 to 17 February 20211168735 of 100 (Notable)
Extreme rain in United States, 11 to 20 February 2021extreme rain event11 to 20 February 202132528267 of 100 (Major)
Heat wave in Germany and 33 other countries, 10 February to 4 March 2021heat wave10 February to 4 March 20213,02585050 of 100 (Notable)
Heat wave in United States and Bahamas, The, 7 to 20 February 2021heat wave7 to 20 February 20211485542 of 100 (Notable)
Snow event in Netherlands and 2 other countries, 7 to 18 February 2021snow event7 to 18 February 202160418265 of 100 (Major)
Cold outbreak in United States and Mexico, 6 February to 5 March 2021cold outbreak6 February to 5 March 202112,1182,34865 of 100 (Major)
Extreme rain in Australia, 5 to 7 February 2021extreme rain event5 to 7 February 202110310180 of 100 (Exceptional)
Extreme rain in Germany and 5 other countries, 2 to 11 February 2021extreme rain event2 to 11 February 202127524080 of 100 (Exceptional)
Cold outbreak in Germany and 21 other countries, 1 to 18 February 2021cold outbreak1 to 18 February 202157126344 of 100 (Notable)
Extreme rain in Australia, 31 January to 10 February 2021extreme rain event31 January to 10 February 202140728780 of 100 (Exceptional)
Extreme rain in United States, 31 January to 9 February 2021extreme rain event31 January to 9 February 202118816762 of 100 (Major)
Extreme rain in United States, 30 January to 3 February 2021extreme rain event30 January to 3 February 202122522168 of 100 (Major)
Extreme rain in Germany and 6 other countries, 27 to 31 January 2021extreme rain event27 to 31 January 202127324680 of 100 (Exceptional)
Extreme rain in Australia, 25 January to 3 February 2021extreme rain event25 January to 3 February 202166555780 of 100 (Exceptional)
Extreme rain in United States, 24 to 30 January 2021extreme rain event24 to 30 January 202119815480 of 100 (Exceptional)
Heat wave in United States and Mexico, 22 January to 15 February 2021heat wave22 January to 15 February 202194067746 of 100 (Notable)
Extreme rain in United States, 21 to 29 January 2021extreme rain event21 to 29 January 202175270168 of 100 (Major)
Heat wave in Japan and 4 other countries, 20 to 27 January 2021heat wave20 to 27 January 20211699939 of 100 (Notable)
Cold outbreak in United States, 19 January to 3 February 2021cold outbreak19 January to 3 February 202172141950 of 100 (Notable)
Extreme rain in Sweden and 7 other countries, 18 to 25 January 2021extreme rain event18 to 25 January 202143831579 of 100 (Major)
Cold outbreak in Australia, 13 to 26 January 2021cold outbreak13 to 26 January 202117010739 of 100 (Notable)
Cold outbreak in Belarus and 10 other countries, 12 to 21 January 2021cold outbreak12 to 21 January 20211378334 of 100 (Routine)
Extreme rain in Netherlands and 4 other countries, 11 to 15 January 2021extreme rain event11 to 15 January 202111511462 of 100 (Major)
Extreme rain in United States, 11 to 14 January 2021extreme rain event11 to 14 January 202116415590 of 100 (Exceptional)
Extreme rain in Sweden and 5 other countries, 10 to 13 January 2021extreme rain event10 to 13 January 202122519176 of 100 (Major)
Snow event in United States, 9 to 14 January 2021snow event9 to 14 January 202126014568 of 100 (Major)
Extreme rain in United States, 5 to 7 January 2021extreme rain event5 to 7 January 202111311380 of 100 (Exceptional)
Heat wave in India and 3 other countries, 3 to 16 January 2021heat wave3 to 16 January 20211995934 of 100 (Routine)

Records per Event

Station records per event in 2021
Cold outbreak in United States, 24 December 2021 to 11 January 20222,422 records
Extreme rain in United States, 23 to 31 December 2021118 records
Extreme rain in Australia, 18 to 20 December 2021132 records
Extreme rain in United States and Mexico, 18 December 2021 to 4 January 20221,129 records
Heat wave in Germany and 49 other countries, 18 December 2021 to 15 January 20223,626 records
Cold outbreak in Russia and 4 other countries, 16 to 31 December 2021186 records
Extreme rain in United States and Mexico, 15 to 20 December 2021213 records
Heat wave in Russia and 8 other countries, 15 to 26 December 2021228 records
Heat wave in United Kingdom and 17 other countries, 10 to 19 December 2021276 records
Cold outbreak in United States, 9 to 20 December 2021240 records
Extreme rain in United States, 8 to 17 December 2021916 records
Extreme rain in Australia, 4 to 12 December 2021168 records
Heat wave in Turkey and 12 other countries, 4 to 16 December 2021112 records
Heat wave in Russia and 8 other countries, 27 November to 13 December 2021622 records
Cold outbreak in Sweden and 9 other countries, 25 November to 10 December 2021351 records
Heat wave in China and 4 other countries, 22 to 30 November 2021107 records
Extreme rain in Australia, 20 to 23 November 2021104 records
Cold outbreak in United States, 15 November to 1 December 2021146 records
Extreme rain in United States, 10 to 12 November 2021180 records
Extreme rain in United States, 9 to 12 November 2021112 records
Cold outbreak in Australia, 7 to 23 November 2021326 records
Heat wave in Russia and 2 other countries, 7 to 17 November 2021104 records
Extreme rain in Australia, 3 to 15 November 20211,119 records
Cold outbreak in China and 8 other countries, 2 to 15 November 2021372 records
Cold outbreak in United States, 2 to 9 November 2021160 records
Heat wave in Germany and 27 other countries, 2 to 21 November 2021454 records
Extreme rain in Germany and 8 other countries, 30 October to 8 November 2021201 records
Extreme rain in Australia, 28 October to 3 November 2021109 records
Extreme rain in Australia, 27 to 30 October 2021267 records
Extreme rain in Australia, 25 to 29 October 2021124 records
Heat wave in Finland and 19 other countries, 25 October to 10 November 2021539 records
Extreme rain in United States, 20 to 31 October 20211,655 records
Extreme rain in Australia, 18 to 21 October 2021178 records
Extreme rain in Netherlands and 8 other countries, 18 to 23 October 2021418 records
Extreme rain in United States, 18 to 21 October 2021125 records
Heat wave in Germany and 25 other countries, 16 to 22 October 2021387 records
Heat wave in Russia and 4 other countries, 14 to 30 October 2021375 records
Cold outbreak in Russia and 5 other countries, 13 to 26 October 2021194 records
Extreme rain in Sweden and 3 other countries, 13 to 17 October 2021168 records
Heat wave in Australia, 12 October to 3 November 2021162 records
Snow event in United States, 11 to 21 October 2021457 records
Extreme rain in Australia, 10 to 20 October 2021470 records
Cold outbreak in Germany and 19 other countries, 8 to 16 October 2021170 records
Cold outbreak in United States, 5 to 27 October 20211,619 records
Extreme rain in United States, 5 to 18 October 2021986 records
Extreme rain in Sweden and 4 other countries, 4 to 7 October 2021110 records
Extreme rain in Netherlands and 4 other countries, 30 September to 6 October 2021223 records
Extreme rain in Sweden and 5 other countries, 27 September to 5 October 2021297 records
Extreme rain in Australia, 26 September to 8 October 2021566 records
Extreme rain in United States, 26 September to 1 October 2021101 records
Cold outbreak in United States, 24 September to 4 October 2021312 records
Extreme rain in United States, 23 September to 10 October 2021623 records
Extreme rain in Sweden and 4 other countries, 22 to 24 September 2021187 records
Extreme rain in United States, 17 to 21 September 2021161 records
Cold outbreak in Ukraine and 15 other countries, 16 to 25 September 2021154 records
Cold outbreak in United States, 14 to 25 September 2021169 records
Extreme rain in United States, 13 to 26 September 2021594 records
Heat wave in Australia, 7 to 13 September 2021106 records
Heat wave in China and 3 other countries, 5 to 15 September 2021139 records
Extreme rain in Australia, 3 to 6 September 2021290 records
Heat wave in Australia, 31 August to 4 September 2021230 records
Extreme rain in Australia, 22 to 28 August 2021192 records
Cold outbreak in Sweden and 14 other countries, 16 to 28 August 2021180 records
Heat wave in Russia and 4 other countries, 14 August to 2 September 2021465 records
Extreme rain in Sweden and 10 other countries, 13 to 30 August 2021506 records
Heat wave in Russia and China, 8 to 28 August 2021211 records
Cold outbreak in Japan and 2 other countries, 6 to 20 August 2021241 records
Extreme rain in United States, 5 to 25 August 2021857 records
Cold outbreak in Sweden and 12 other countries, 31 July to 6 August 2021127 records
Extreme rain in Australia, 31 July to 5 August 2021105 records
Extreme rain in United States and Mexico, 31 July to 7 August 2021122 records
Extreme rain in Netherlands and 16 other countries, 30 July to 12 August 2021234 records
Heat wave in Australia, 27 July to 5 August 2021128 records
Heat wave in China and 2 other countries, 27 July to 13 August 2021311 records
Heat wave in Australia, 26 July to 4 August 2021270 records
Extreme rain in Sweden and 4 other countries, 24 July to 1 August 2021226 records
Extreme rain in Australia, 22 to 27 July 2021116 records
Extreme rain in Australia, 14 to 20 July 2021201 records
Heat wave in Australia, 12 to 19 July 2021108 records
Extreme rain in United States, 11 July to 9 August 20211,001 records
Extreme rain in Australia, 4 to 14 July 2021136 records
Extreme rain in Germany and 12 other countries, 3 to 17 July 2021357 records
Extreme rain in Australia, 29 June to 5 July 2021289 records
Extreme rain in Germany and 8 other countries, 26 June to 3 July 2021239 records
Extreme rain in Australia, 22 to 28 June 2021362 records
Extreme rain in United States, 18 to 24 June 2021235 records
Heat wave in Russia, 18 June to 9 July 2021107 records
Extreme rain in Netherlands and 6 other countries, 16 to 26 June 2021399 records
Extreme rain in Sweden and 4 other countries, 16 to 24 June 2021111 records
Extreme rain in Australia, 15 to 19 June 2021189 records
Extreme rain in Australia, 7 to 13 June 2021392 records
Cold outbreak in United States, 6 to 16 June 2021214 records
Heat wave in China and 2 other countries, 5 to 23 June 2021192 records
Extreme rain in Germany and 5 other countries, 3 to 10 June 2021116 records
Extreme rain in Australia, 1 to 5 June 2021105 records
Heat wave in Russia and 5 other countries, 1 to 16 June 2021285 records
Extreme rain in Australia, 28 May to 1 June 2021174 records
Cold outbreak in Australia, 27 May to 14 June 2021239 records
Extreme rain in United States, 22 May to 15 June 2021865 records
Cold outbreak in United Kingdom and 11 other countries, 19 to 28 May 2021100 records
Snow event in United States, 19 to 26 May 2021183 records
Cold outbreak in Russia and 3 other countries, 17 to 27 May 2021126 records
Cold outbreak in United States, 14 May to 11 June 20212,720 records
Extreme rain in United States, 14 to 27 May 2021602 records
Heat wave in Japan and 5 other countries, 12 to 24 May 2021302 records
Extreme rain in Sweden and 5 other countries, 9 to 24 May 2021351 records
Extreme rain in Australia, 8 to 14 May 2021198 records
Extreme rain in Sweden and 12 other countries, 8 to 27 May 2021483 records
Extreme rain in United States, 8 to 14 May 2021263 records
Extreme rain in Australia, 4 to 8 May 2021204 records
Extreme rain in Australia, 3 to 7 May 2021206 records
Cold outbreak in United States, 2 to 25 May 20211,082 records
Extreme rain in Sweden and 11 other countries, 30 April to 9 May 2021193 records
Heat wave in Turkey and 19 other countries, 27 April to 13 May 2021195 records
Heat wave in Uzbekistan and 8 other countries, 26 April to 6 May 2021125 records
Extreme rain in United States, 23 to 26 April 2021123 records
Extreme rain in United States and Mexico, 23 April to 6 May 2021668 records
Cold outbreak in Germany and 22 other countries, 22 April to 10 May 2021670 records
Extreme rain in Sweden and 3 other countries, 20 to 25 April 2021134 records
Cold outbreak in Russia and 5 other countries, 18 to 25 April 2021106 records
Extreme rain in Australia, 17 to 27 April 2021125 records
Heat wave in Saudi Arabia and 10 other countries, 17 to 26 April 2021109 records
Extreme rain in Australia, 16 to 20 April 2021117 records
Heat wave in Russia and 4 other countries, 16 to 24 April 2021132 records
Heat wave in United States, 16 to 28 April 2021153 records
Heat wave in Finland and 6 other countries, 15 to 26 April 2021186 records
Extreme rain in United States, 13 to 21 April 2021118 records
Snow event in United States, 12 to 27 April 20211,172 records
Cold outbreak in Australia, 10 to 27 April 2021308 records
Extreme rain in Australia, 9 to 15 April 2021256 records
Extreme rain in Sweden and 5 other countries, 9 to 13 April 2021285 records
Heat wave in Russia and 7 other countries, 9 to 16 April 2021178 records
Extreme rain in United States, 5 to 11 April 2021391 records
Heat wave in Russia and 3 other countries, 5 to 13 April 2021120 records
Snow event in Germany and 3 other countries, 5 to 9 April 2021225 records
Cold outbreak in Germany and 25 other countries, 3 to 22 April 2021834 records
Extreme rain in Australia, 3 to 8 April 2021149 records
Cold outbreak in United States, 1 to 13 April 2021251 records
Heat wave in Australia, 30 March to 9 April 2021102 records
Heat wave in Australia, 28 March to 7 April 2021133 records
Heat wave in United States and Mexico, 26 March to 17 April 20213,669 records
Heat wave in Japan and 5 other countries, 21 March to 5 April 2021480 records
Heat wave in Germany and 33 other countries, 20 March to 6 April 20211,700 records
Extreme rain in United States, 19 March to 2 April 2021866 records
Heat wave in Saudi Arabia and 10 other countries, 15 to 29 March 2021107 records
Cold outbreak in Australia, 12 to 24 March 2021140 records
Cold outbreak in Uzbekistan and 4 other countries, 12 to 17 March 2021113 records
Heat wave in United States, 12 March to 1 April 20211,030 records
Extreme rain in Sweden and 7 other countries, 9 to 15 March 2021293 records
Extreme rain in United States, 9 to 19 March 20211,157 records
Heat wave in Russia and 7 other countries, 9 to 23 March 2021662 records
Snow event in United States, 9 to 30 March 2021666 records
Extreme rain in Australia, 7 to 26 March 20212,099 records
Extreme rain in United States, 6 to 18 March 2021101 records
Cold outbreak in Russia and 6 other countries, 5 to 15 March 2021372 records
Extreme rain in Australia, 1 to 8 March 2021478 records
Heat wave in United States and Mexico, 28 February to 21 March 20212,135 records
Extreme rain in United States, 26 February to 1 March 2021341 records
Heat wave in United States and 2 other countries, 24 February to 3 March 2021299 records
Cold outbreak in Australia, 22 February to 8 March 2021117 records
Extreme rain in United States, 20 February to 3 March 2021105 records
Heat wave in United States, 20 to 25 February 2021100 records
Extreme rain in Finland and 3 other countries, 19 to 27 February 2021197 records
Cold outbreak in Russia and 9 other countries, 15 to 27 February 2021427 records
Heat wave in China and 9 other countries, 13 February to 2 March 2021650 records
Heat wave in Japan and 3 other countries, 13 to 17 February 2021116 records
Extreme rain in United States, 11 to 20 February 2021325 records
Heat wave in Germany and 33 other countries, 10 February to 4 March 20213,025 records
Heat wave in United States and Bahamas, The, 7 to 20 February 2021148 records
Snow event in Netherlands and 2 other countries, 7 to 18 February 2021604 records
Cold outbreak in United States and Mexico, 6 February to 5 March 202112,118 records
Extreme rain in Australia, 5 to 7 February 2021103 records
Extreme rain in Germany and 5 other countries, 2 to 11 February 2021275 records
Cold outbreak in Germany and 21 other countries, 1 to 18 February 2021571 records
Extreme rain in Australia, 31 January to 10 February 2021407 records
Extreme rain in United States, 31 January to 9 February 2021188 records
Extreme rain in United States, 30 January to 3 February 2021225 records
Extreme rain in Germany and 6 other countries, 27 to 31 January 2021273 records
Extreme rain in Australia, 25 January to 3 February 2021665 records
Extreme rain in United States, 24 to 30 January 2021198 records
Heat wave in United States and Mexico, 22 January to 15 February 2021940 records
Extreme rain in United States, 21 to 29 January 2021752 records
Heat wave in Japan and 4 other countries, 20 to 27 January 2021169 records
Cold outbreak in United States, 19 January to 3 February 2021721 records
Extreme rain in Sweden and 7 other countries, 18 to 25 January 2021438 records
Cold outbreak in Australia, 13 to 26 January 2021170 records
Cold outbreak in Belarus and 10 other countries, 12 to 21 January 2021137 records
Extreme rain in Netherlands and 4 other countries, 11 to 15 January 2021115 records
Extreme rain in United States, 11 to 14 January 2021164 records
Extreme rain in Sweden and 5 other countries, 10 to 13 January 2021225 records
Snow event in United States, 9 to 14 January 2021260 records
Extreme rain in United States, 5 to 7 January 2021113 records
Heat wave in India and 3 other countries, 3 to 16 January 2021199 records

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 2026-10-12. Events are found by this site from station records and are not official designations.