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Built 2026-10-14 (14 October 2026)

Extreme Weather Events in 2018

175 extreme weather events began in 2018, with 69,312 station records set across them, from heat waves to snow events.

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

Key Facts

  • 175 extreme weather events began in 2018, with 69,312 station records in total.
  • Heat waves: 49.
  • Cold outbreaks: 31.
  • Extreme rain events: 93.
  • Snow events: 2.

Events That Began in 2018

Events that began in 2018
EventTypeDatesRecordsStationsTop significance
Extreme rain in United States, 30 December 2018 to 5 January 2019extreme rain event30 December 2018 to 5 January 201947444865 of 100 (Major)
Extreme rain in Finland and 4 other countries, 29 December 2018 to 4 January 2019extreme rain event29 December 2018 to 4 January 201913512560 of 100 (Major)
Cold outbreak in United States, 27 December 2018 to 7 January 2019cold outbreak27 December 2018 to 7 January 201955034147 of 100 (Notable)
Extreme rain in United States, 24 December 2018 to 3 January 2019extreme rain event24 December 2018 to 3 January 20191,1161,02397 of 100 (Exceptional)
Heat wave in United Kingdom and 9 other countries, 24 December 2018 to 1 January 2019heat wave24 December 2018 to 1 January 20191078746 of 100 (Notable)
Cold outbreak in Russia and 2 other countries, 22 December 2018 to 8 January 2019cold outbreak22 December 2018 to 8 January 20191808137 of 100 (Notable)
Heat wave in Germany and 10 other countries, 20 to 27 December 2018heat wave20 to 27 December 201813310840 of 100 (Notable)
Heat wave in United States, 20 to 23 December 2018heat wave20 to 23 December 201819715445 of 100 (Notable)
Extreme rain in Netherlands and 10 other countries, 19 to 24 December 2018extreme rain event19 to 24 December 201835329657 of 100 (Notable)
Extreme rain in United States, 19 to 22 December 2018extreme rain event19 to 22 December 201827426565 of 100 (Major)
Extreme rain in United States, 16 to 20 December 2018extreme rain event16 to 20 December 201813212980 of 100 (Exceptional)
Extreme rain in United States, 13 to 17 December 2018extreme rain event13 to 17 December 201832730967 of 100 (Major)
Extreme rain in Australia, 9 to 23 December 2018extreme rain event9 to 23 December 20181,04183384 of 100 (Exceptional)
Extreme rain in Germany and 6 other countries, 7 to 9 December 2018extreme rain event7 to 9 December 201811210753 of 100 (Notable)
Extreme rain in Sweden and 3 other countries, 6 to 11 December 2018extreme rain event6 to 11 December 201816713969 of 100 (Major)
Extreme rain in United States and Mexico, 6 to 11 December 2018extreme rain event6 to 11 December 201841639580 of 100 (Exceptional)
Heat wave in Australia, 5 to 17 December 2018heat wave5 to 17 December 20181929952 of 100 (Notable)
Extreme rain in Australia, 4 to 11 December 2018extreme rain event4 to 11 December 20181078380 of 100 (Exceptional)
Cold outbreak in Mongolia and 2 other countries, 2 to 13 December 2018cold outbreak2 to 13 December 20181797440 of 100 (Notable)
Extreme rain in United States, 2 to 3 December 2018extreme rain event2 to 3 December 201816216275 of 100 (Major)
Cold outbreak in United States, 1 to 7 December 2018cold outbreak1 to 7 December 201816412947 of 100 (Notable)
Extreme rain in Germany and 6 other countries, 1 to 4 December 2018extreme rain event1 to 4 December 201826020074 of 100 (Major)
Heat wave in Japan and 4 other countries, 30 November to 7 December 2018heat wave30 November to 7 December 201834817749 of 100 (Notable)
Extreme rain in Australia, 26 November to 1 December 2018extreme rain event26 November to 1 December 201822920076 of 100 (Major)
Heat wave in Germany and 21 other countries, 26 November to 11 December 2018heat wave26 November to 11 December 201870740659 of 100 (Notable)
Extreme rain in United States, 22 to 28 November 2018extreme rain event22 to 28 November 201821020660 of 100 (Major)
Extreme rain in Australia, 19 to 26 November 2018extreme rain event19 to 26 November 201840437280 of 100 (Exceptional)
Heat wave in United States and Bahamas, The, 11 November to 5 December 2018heat wave11 November to 5 December 201814311052 of 100 (Notable)
Extreme rain in Norway and Sweden, 10 to 12 November 2018extreme rain event10 to 12 November 20181057671 of 100 (Major)
Extreme rain in Australia, 9 to 12 November 2018extreme rain event9 to 12 November 201812610771 of 100 (Major)
Cold outbreak in United States and Mexico, 6 to 29 November 2018cold outbreak6 to 29 November 20183,9161,92158 of 100 (Notable)
Heat wave in Russia and 3 other countries, 5 to 17 November 2018heat wave5 to 17 November 201824411642 of 100 (Notable)
Extreme rain in Australia, 4 to 10 November 2018extreme rain event4 to 10 November 201818317265 of 100 (Major)
Extreme rain in United States, 2 to 17 November 2018extreme rain event2 to 17 November 201895575473 of 100 (Major)
Extreme rain in United States, 31 October to 8 November 2018extreme rain event31 October to 8 November 201826123557 of 100 (Notable)
Heat wave in United States and 2 other countries, 31 October to 15 November 2018heat wave31 October to 15 November 201820411946 of 100 (Notable)
Heat wave in Australia, 30 October to 8 November 2018heat wave30 October to 8 November 201824611347 of 100 (Notable)
Extreme rain in United States, 29 October to 4 November 2018extreme rain event29 October to 4 November 201837435372 of 100 (Major)
Extreme rain in United States, 26 to 29 October 2018extreme rain event26 to 29 October 201810010047 of 100 (Notable)
Cold outbreak in Spain and 14 other countries, 25 October to 2 November 2018cold outbreak25 October to 2 November 201840824447 of 100 (Notable)
Extreme rain in United States, 21 to 25 October 2018extreme rain event21 to 25 October 201817316565 of 100 (Major)
Heat wave in United States and Mexico, 14 October to 9 November 2018heat wave14 October to 9 November 201881048253 of 100 (Notable)
Heat wave in Australia, 13 October to 2 November 2018heat wave13 October to 2 November 201822312445 of 100 (Notable)
Extreme rain in United States, 12 to 21 October 2018extreme rain event12 to 21 October 201830623772 of 100 (Major)
Extreme rain in Australia, 10 to 15 October 2018extreme rain event10 to 15 October 201810710462 of 100 (Major)
Heat wave in United States, 10 to 29 October 2018heat wave10 to 29 October 20181595546 of 100 (Notable)
Extreme rain in United States, 9 to 13 October 2018extreme rain event9 to 13 October 201831830180 of 100 (Exceptional)
Heat wave in Japan, 5 to 10 October 2018heat wave5 to 10 October 20181178347 of 100 (Notable)
Extreme rain in Australia, 4 to 23 October 2018extreme rain event4 to 23 October 201887559380 of 100 (Exceptional)
Heat wave in Russia and 5 other countries, 30 September to 17 October 2018heat wave30 September to 17 October 201830715048 of 100 (Notable)
Extreme rain in Australia, 29 September to 6 October 2018extreme rain event29 September to 6 October 20181119767 of 100 (Major)
Extreme rain in United States and Mexico, 29 September to 19 October 2018extreme rain event29 September to 19 October 20181,9701,50180 of 100 (Exceptional)
Heat wave in Russia and United States, 27 September to 9 October 2018heat wave27 September to 9 October 20181381844 of 100 (Notable)
Snow event in United States, 27 September to 17 October 2018snow event27 September to 17 October 20181,24763480 of 100 (Exceptional)
Cold outbreak in Germany and 18 other countries, 20 September to 4 October 2018cold outbreak20 September to 4 October 201847429146 of 100 (Notable)
Extreme rain in Germany and 5 other countries, 20 to 24 September 2018extreme rain event20 to 24 September 201818518367 of 100 (Major)
Extreme rain in Norway and Sweden, 20 to 26 September 2018extreme rain event20 to 26 September 201815112180 of 100 (Exceptional)
Extreme rain in United States and Mexico, 17 to 29 September 2018extreme rain event17 to 29 September 201887276881 of 100 (Exceptional)
Extreme rain in United States, 13 to 19 September 2018extreme rain event13 to 19 September 201818514879 of 100 (Major)
Cold outbreak in Russia and 2 other countries, 7 to 12 September 2018cold outbreak7 to 12 September 201817012447 of 100 (Notable)
Extreme rain in Norway and 4 other countries, 6 to 14 September 2018extreme rain event6 to 14 September 201822720363 of 100 (Major)
Heat wave in Australia, 6 to 16 September 2018heat wave6 to 16 September 20181399540 of 100 (Notable)
Heat wave in United States, 6 to 20 September 2018heat wave6 to 20 September 20181013650 of 100 (Notable)
Cold outbreak in United States, 5 to 17 September 2018cold outbreak5 to 17 September 201869954152 of 100 (Notable)
Heat wave in Russia, 4 to 19 September 2018heat wave4 to 19 September 20181342939 of 100 (Notable)
Extreme rain in Australia, 3 to 9 September 2018extreme rain event3 to 9 September 201824323854 of 100 (Notable)
Extreme rain in United States, 26 to 29 August 2018extreme rain event26 to 29 August 201818417051 of 100 (Notable)
Extreme rain in Australia, 24 to 28 August 2018extreme rain event24 to 28 August 201814514066 of 100 (Major)
Cold outbreak in Germany and 12 other countries, 23 to 27 August 2018cold outbreak23 to 27 August 201812911936 of 100 (Notable)
Extreme rain in United States, 22 to 29 August 2018extreme rain event22 to 29 August 20181135788 of 100 (Exceptional)
Heat wave in Japan and Korea, South, 21 to 31 August 2018heat wave21 to 31 August 20182118846 of 100 (Notable)
Heat wave in Russia and 2 other countries, 19 August to 3 September 2018heat wave19 August to 3 September 20181438941 of 100 (Notable)
Cold outbreak in Australia, 17 August to 4 September 2018cold outbreak17 August to 4 September 201826413543 of 100 (Notable)
Extreme rain in Netherlands and 7 other countries, 8 to 12 August 2018extreme rain event8 to 12 August 201821020171 of 100 (Major)
Extreme rain in Australia, 2 to 13 August 2018extreme rain event2 to 13 August 201829223976 of 100 (Major)
Heat wave in United States and Bahamas, The, 1 to 13 August 2018heat wave1 to 13 August 201824315850 of 100 (Notable)
Extreme rain in Australia, 31 July to 6 August 2018extreme rain event31 July to 6 August 201815913659 of 100 (Notable)
Cold outbreak in Russia, 30 July to 9 August 2018cold outbreak30 July to 9 August 20181759148 of 100 (Notable)
Extreme rain in Sweden and 3 other countries, 28 July to 6 August 2018extreme rain event28 July to 6 August 201819217274 of 100 (Major)
Heat wave in Australia, 23 to 31 July 2018heat wave23 to 31 July 20181217741 of 100 (Notable)
Heat wave in United States, 23 to 31 July 2018heat wave23 to 31 July 20181368544 of 100 (Notable)
Extreme rain in United States, 21 July to 5 August 2018extreme rain event21 July to 5 August 201857349877 of 100 (Major)
Cold outbreak in United States and Mexico, 18 July to 16 August 2018cold outbreak18 July to 16 August 201885564656 of 100 (Notable)
Extreme rain in Russia and 3 other countries, 18 to 23 July 2018extreme rain event18 to 23 July 201810910076 of 100 (Major)
Cold outbreak in Australia, 11 to 24 July 2018cold outbreak11 to 24 July 20181056847 of 100 (Notable)
Extreme rain in Australia, 1 to 6 July 2018extreme rain event1 to 6 July 201823422878 of 100 (Major)
Extreme rain in Australia, 1 to 4 July 2018extreme rain event1 to 4 July 201811410169 of 100 (Major)
Extreme rain in United States, 1 to 28 July 2018extreme rain event1 to 28 July 20181,3651,078100 of 100 (Exceptional)
Cold outbreak in Germany and 15 other countries, 28 June to 5 July 2018cold outbreak28 June to 5 July 201818214344 of 100 (Notable)
Heat wave in Australia, 27 June to 8 July 2018heat wave27 June to 8 July 201835718447 of 100 (Notable)
Heat wave in Turkmenistan and 6 other countries, 27 June to 25 July 2018heat wave27 June to 25 July 20183075945 of 100 (Notable)
Extreme rain in Australia, 26 to 29 June 2018extreme rain event26 to 29 June 201813812970 of 100 (Major)
Cold outbreak in United States, 25 June to 6 July 2018cold outbreak25 June to 6 July 201812711653 of 100 (Notable)
Heat wave in Japan and 2 other countries, 22 June to 5 July 2018heat wave22 June to 5 July 201830611737 of 100 (Notable)
Heat wave in Russia and 3 other countries, 15 June to 3 July 2018heat wave15 June to 3 July 201829212144 of 100 (Notable)
Extreme rain in United States and Mexico, 14 June to 2 July 2018extreme rain event14 June to 2 July 20181,6001,28980 of 100 (Exceptional)
Extreme rain in Sweden and 3 other countries, 13 to 23 June 2018extreme rain event13 to 23 June 201826622777 of 100 (Major)
Extreme rain in Australia, 12 to 19 June 2018extreme rain event12 to 19 June 201821317980 of 100 (Exceptional)
Extreme rain in United States, 7 to 14 June 2018extreme rain event7 to 14 June 201826524175 of 100 (Major)
Cold outbreak in Russia and 9 other countries, 5 to 19 June 2018cold outbreak5 to 19 June 201817712543 of 100 (Notable)
Extreme rain in Germany and 7 other countries, 4 to 14 June 2018extreme rain event4 to 14 June 201817014082 of 100 (Exceptional)
Extreme rain in Netherlands and 5 other countries, 27 May to 2 June 2018extreme rain event27 May to 2 June 201825621977 of 100 (Major)
Heat wave in Russia and 6 other countries, 22 May to 12 June 2018heat wave22 May to 12 June 201855429752 of 100 (Notable)
Heat wave in Australia, 21 to 30 May 2018heat wave21 to 30 May 201814910142 of 100 (Notable)
Cold outbreak in Russia and 8 other countries, 15 May to 5 June 2018cold outbreak15 May to 5 June 201851130453 of 100 (Notable)
Cold outbreak in United States, 12 to 31 May 2018cold outbreak12 to 31 May 20181035548 of 100 (Notable)
Extreme rain in Germany and 13 other countries, 12 to 17 May 2018extreme rain event12 to 17 May 201816215875 of 100 (Major)
Extreme rain in Australia, 10 to 13 May 2018extreme rain event10 to 13 May 201825622981 of 100 (Exceptional)
Extreme rain in Sweden and 4 other countries, 10 to 12 May 2018extreme rain event10 to 12 May 201811310465 of 100 (Major)
Heat wave in Australia, 10 to 27 May 2018heat wave10 to 27 May 20181434249 of 100 (Notable)
Heat wave in Japan and 5 other countries, 10 to 25 May 2018heat wave10 to 25 May 201850524443 of 100 (Notable)
Extreme rain in United States, 6 May to 4 June 2018extreme rain event6 May to 4 June 20181,7291,26780 of 100 (Exceptional)
Extreme rain in Australia, 3 to 4 May 2018extreme rain event3 to 4 May 201813713359 of 100 (Notable)
Extreme rain in United States, 1 to 5 May 2018extreme rain event1 to 5 May 201831127180 of 100 (Exceptional)
Cold outbreak in United States, 29 April to 4 May 2018cold outbreak29 April to 4 May 20181089643 of 100 (Notable)
Extreme rain in Netherlands and 9 other countries, 28 April to 1 May 2018extreme rain event28 April to 1 May 201841233380 of 100 (Exceptional)
Extreme rain in United States, 28 April to 4 May 2018extreme rain event28 April to 4 May 201820819565 of 100 (Major)
Heat wave in Russia and Mongolia, 28 April to 13 May 2018heat wave28 April to 13 May 201825414647 of 100 (Notable)
Extreme rain in United States, 19 to 26 April 2018extreme rain event19 to 26 April 201835933862 of 100 (Major)
Heat wave in Argentina and 2 other countries, 17 April to 11 May 2018heat wave17 April to 11 May 20182274747 of 100 (Notable)
Heat wave in Japan and 4 other countries, 16 April to 3 May 2018heat wave16 April to 3 May 201820113434 of 100 (Routine)
Heat wave in Russia and 3 other countries, 16 to 29 April 2018heat wave16 to 29 April 201823912942 of 100 (Notable)
Extreme rain in Australia, 13 to 16 April 2018extreme rain event13 to 16 April 201812912057 of 100 (Notable)
Extreme rain in Germany and 2 other countries, 9 to 14 April 2018extreme rain event9 to 14 April 201817015980 of 100 (Exceptional)
Cold outbreak in Thailand and 2 other countries, 3 to 11 April 2018cold outbreak3 to 11 April 20181005053 of 100 (Notable)
Extreme rain in Sweden and 3 other countries, 3 to 6 April 2018extreme rain event3 to 6 April 201810710044 of 100 (Notable)
Extreme rain in United States, 3 to 17 April 2018extreme rain event3 to 17 April 20181,3881,20090 of 100 (Exceptional)
Heat wave in Russia, 28 March to 8 April 2018heat wave28 March to 8 April 20181063440 of 100 (Notable)
Extreme rain in Netherlands and 5 other countries, 27 March to 5 April 2018extreme rain event27 March to 5 April 201830725959 of 100 (Notable)
Heat wave in United States and Mexico, 27 March to 20 April 2018heat wave27 March to 20 April 20181,57895256 of 100 (Notable)
Cold outbreak in Sweden and 6 other countries, 24 March to 4 April 2018cold outbreak24 March to 4 April 201827216041 of 100 (Notable)
Extreme rain in Australia, 24 to 27 March 2018extreme rain event24 to 27 March 201812611355 of 100 (Notable)
Extreme rain in United States, 24 March to 1 April 2018extreme rain event24 March to 1 April 201844742080 of 100 (Exceptional)
Extreme rain in United States, 20 to 29 March 2018extreme rain event20 to 29 March 201839935865 of 100 (Major)
Heat wave in United States and Mexico, 20 to 29 March 2018heat wave20 to 29 March 201845534547 of 100 (Notable)
Cold outbreak in United States, 17 to 28 March 2018cold outbreak17 to 28 March 201816514444 of 100 (Notable)
Snow event in Netherlands and 3 other countries, 17 to 24 March 2018snow event17 to 24 March 201814210262 of 100 (Major)
Heat wave in Russia and 11 other countries, 16 March to 7 April 2018heat wave16 March to 7 April 20181,68253050 of 100 (Notable)
Cold outbreak in Germany and 31 other countries, 15 to 27 March 2018cold outbreak15 to 27 March 20181,50865145 of 100 (Notable)
Heat wave in Australia, 15 to 22 March 2018heat wave15 to 22 March 20181066243 of 100 (Notable)
Cold outbreak in United States, 14 to 29 March 2018cold outbreak14 to 29 March 201834425046 of 100 (Notable)
Extreme rain in United States, 13 to 21 March 2018extreme rain event13 to 21 March 201835132976 of 100 (Major)
Extreme rain in Sweden and 18 other countries, 10 to 20 March 2018extreme rain event10 to 20 March 201841535666 of 100 (Major)
Heat wave in Germany and 39 other countries, 7 to 30 March 2018heat wave7 to 30 March 201847626347 of 100 (Notable)
Heat wave in Japan and 11 other countries, 6 to 17 March 2018heat wave6 to 17 March 201846824543 of 100 (Notable)
Heat wave in United States and Mexico, 6 to 21 March 2018heat wave6 to 21 March 201835328245 of 100 (Notable)
Extreme rain in United States, 1 to 3 March 2018extreme rain event1 to 3 March 201817217178 of 100 (Major)
Extreme rain in United States, 23 February to 6 March 2018extreme rain event23 February to 6 March 201837835368 of 100 (Major)
Cold outbreak in Germany and 34 other countries, 21 February to 15 March 2018cold outbreak21 February to 15 March 20182,83699751 of 100 (Notable)
Extreme rain in Australia, 19 February to 9 March 2018extreme rain event19 February to 9 March 201890467380 of 100 (Exceptional)
Extreme rain in United States, 14 February to 2 March 2018extreme rain event14 February to 2 March 20181,6241,04590 of 100 (Exceptional)
Extreme rain in United States, 14 to 21 February 2018extreme rain event14 to 21 February 201821319661 of 100 (Major)
Heat wave in Australia, 7 to 21 February 2018heat wave7 to 21 February 201825610441 of 100 (Notable)
Extreme rain in United States, 6 to 12 February 2018extreme rain event6 to 12 February 201856348076 of 100 (Major)
Cold outbreak in Japan and 2 other countries, 4 to 9 February 2018cold outbreak4 to 9 February 20181055541 of 100 (Notable)
Cold outbreak in Spain and 6 other countries, 2 to 11 February 2018cold outbreak2 to 11 February 20181136641 of 100 (Notable)
Extreme rain in Russia and 6 other countries, 1 to 6 February 2018extreme rain event1 to 6 February 201818515075 of 100 (Major)
Extreme rain in United States, 1 to 16 February 2018extreme rain event1 to 16 February 201858038380 of 100 (Exceptional)
Extreme rain in Sweden and 3 other countries, 30 January to 3 February 2018extreme rain event30 January to 3 February 201813411867 of 100 (Major)
Cold outbreak in Australia, 29 January to 14 February 2018cold outbreak29 January to 14 February 20181578845 of 100 (Notable)
Extreme rain in United States, 27 to 30 January 2018extreme rain event27 to 30 January 201818418069 of 100 (Major)
Extreme rain in Australia, 25 January to 2 February 2018extreme rain event25 January to 2 February 201820918460 of 100 (Major)
Heat wave in Russia, 25 January to 3 February 2018heat wave25 January to 3 February 20181564346 of 100 (Notable)
Extreme rain in Sweden and 3 other countries, 23 to 25 January 2018extreme rain event23 to 25 January 201813212651 of 100 (Notable)
Cold outbreak in Russia and 6 other countries, 18 to 28 January 2018cold outbreak18 to 28 January 201852624141 of 100 (Notable)
Extreme rain in United States, 18 to 24 January 2018extreme rain event18 to 24 January 201851950380 of 100 (Exceptional)
Heat wave in Australia, 16 to 31 January 2018heat wave16 to 31 January 201843015246 of 100 (Notable)
Extreme rain in Netherlands and 7 other countries, 15 to 24 January 2018extreme rain event15 to 24 January 201841936061 of 100 (Major)
Heat wave in Japan and 3 other countries, 15 to 18 January 2018heat wave15 to 18 January 20181159033 of 100 (Routine)
Extreme rain in Sweden and 2 other countries, 14 to 18 January 2018extreme rain event14 to 18 January 201814312666 of 100 (Major)
Cold outbreak in United States and Mexico, 11 to 20 January 2018cold outbreak11 to 20 January 20181,21270349 of 100 (Notable)
Extreme rain in United States, 11 to 17 January 2018extreme rain event11 to 17 January 201849644280 of 100 (Exceptional)
Extreme rain in United States, 8 to 15 January 2018extreme rain event8 to 15 January 201845443066 of 100 (Major)
Extreme rain in Australia, 5 to 18 January 2018extreme rain event5 to 18 January 201848538281 of 100 (Exceptional)
Heat wave in Australia, 2 to 14 January 2018heat wave2 to 14 January 201822714362 of 100 (Major)

Records per Event

Station records per event in 2018
Extreme rain in United States, 30 December 2018 to 5 January 2019474 records
Extreme rain in Finland and 4 other countries, 29 December 2018 to 4 January 2019135 records
Cold outbreak in United States, 27 December 2018 to 7 January 2019550 records
Extreme rain in United States, 24 December 2018 to 3 January 20191,116 records
Heat wave in United Kingdom and 9 other countries, 24 December 2018 to 1 January 2019107 records
Cold outbreak in Russia and 2 other countries, 22 December 2018 to 8 January 2019180 records
Heat wave in Germany and 10 other countries, 20 to 27 December 2018133 records
Heat wave in United States, 20 to 23 December 2018197 records
Extreme rain in Netherlands and 10 other countries, 19 to 24 December 2018353 records
Extreme rain in United States, 19 to 22 December 2018274 records
Extreme rain in United States, 16 to 20 December 2018132 records
Extreme rain in United States, 13 to 17 December 2018327 records
Extreme rain in Australia, 9 to 23 December 20181,041 records
Extreme rain in Germany and 6 other countries, 7 to 9 December 2018112 records
Extreme rain in Sweden and 3 other countries, 6 to 11 December 2018167 records
Extreme rain in United States and Mexico, 6 to 11 December 2018416 records
Heat wave in Australia, 5 to 17 December 2018192 records
Extreme rain in Australia, 4 to 11 December 2018107 records
Cold outbreak in Mongolia and 2 other countries, 2 to 13 December 2018179 records
Extreme rain in United States, 2 to 3 December 2018162 records
Cold outbreak in United States, 1 to 7 December 2018164 records
Extreme rain in Germany and 6 other countries, 1 to 4 December 2018260 records
Heat wave in Japan and 4 other countries, 30 November to 7 December 2018348 records
Extreme rain in Australia, 26 November to 1 December 2018229 records
Heat wave in Germany and 21 other countries, 26 November to 11 December 2018707 records
Extreme rain in United States, 22 to 28 November 2018210 records
Extreme rain in Australia, 19 to 26 November 2018404 records
Heat wave in United States and Bahamas, The, 11 November to 5 December 2018143 records
Extreme rain in Norway and Sweden, 10 to 12 November 2018105 records
Extreme rain in Australia, 9 to 12 November 2018126 records
Cold outbreak in United States and Mexico, 6 to 29 November 20183,916 records
Heat wave in Russia and 3 other countries, 5 to 17 November 2018244 records
Extreme rain in Australia, 4 to 10 November 2018183 records
Extreme rain in United States, 2 to 17 November 2018955 records
Extreme rain in United States, 31 October to 8 November 2018261 records
Heat wave in United States and 2 other countries, 31 October to 15 November 2018204 records
Heat wave in Australia, 30 October to 8 November 2018246 records
Extreme rain in United States, 29 October to 4 November 2018374 records
Extreme rain in United States, 26 to 29 October 2018100 records
Cold outbreak in Spain and 14 other countries, 25 October to 2 November 2018408 records
Extreme rain in United States, 21 to 25 October 2018173 records
Heat wave in United States and Mexico, 14 October to 9 November 2018810 records
Heat wave in Australia, 13 October to 2 November 2018223 records
Extreme rain in United States, 12 to 21 October 2018306 records
Extreme rain in Australia, 10 to 15 October 2018107 records
Heat wave in United States, 10 to 29 October 2018159 records
Extreme rain in United States, 9 to 13 October 2018318 records
Heat wave in Japan, 5 to 10 October 2018117 records
Extreme rain in Australia, 4 to 23 October 2018875 records
Heat wave in Russia and 5 other countries, 30 September to 17 October 2018307 records
Extreme rain in Australia, 29 September to 6 October 2018111 records
Extreme rain in United States and Mexico, 29 September to 19 October 20181,970 records
Heat wave in Russia and United States, 27 September to 9 October 2018138 records
Snow event in United States, 27 September to 17 October 20181,247 records
Cold outbreak in Germany and 18 other countries, 20 September to 4 October 2018474 records
Extreme rain in Germany and 5 other countries, 20 to 24 September 2018185 records
Extreme rain in Norway and Sweden, 20 to 26 September 2018151 records
Extreme rain in United States and Mexico, 17 to 29 September 2018872 records
Extreme rain in United States, 13 to 19 September 2018185 records
Cold outbreak in Russia and 2 other countries, 7 to 12 September 2018170 records
Extreme rain in Norway and 4 other countries, 6 to 14 September 2018227 records
Heat wave in Australia, 6 to 16 September 2018139 records
Heat wave in United States, 6 to 20 September 2018101 records
Cold outbreak in United States, 5 to 17 September 2018699 records
Heat wave in Russia, 4 to 19 September 2018134 records
Extreme rain in Australia, 3 to 9 September 2018243 records
Extreme rain in United States, 26 to 29 August 2018184 records
Extreme rain in Australia, 24 to 28 August 2018145 records
Cold outbreak in Germany and 12 other countries, 23 to 27 August 2018129 records
Extreme rain in United States, 22 to 29 August 2018113 records
Heat wave in Japan and Korea, South, 21 to 31 August 2018211 records
Heat wave in Russia and 2 other countries, 19 August to 3 September 2018143 records
Cold outbreak in Australia, 17 August to 4 September 2018264 records
Extreme rain in Netherlands and 7 other countries, 8 to 12 August 2018210 records
Extreme rain in Australia, 2 to 13 August 2018292 records
Heat wave in United States and Bahamas, The, 1 to 13 August 2018243 records
Extreme rain in Australia, 31 July to 6 August 2018159 records
Cold outbreak in Russia, 30 July to 9 August 2018175 records
Extreme rain in Sweden and 3 other countries, 28 July to 6 August 2018192 records
Heat wave in Australia, 23 to 31 July 2018121 records
Heat wave in United States, 23 to 31 July 2018136 records
Extreme rain in United States, 21 July to 5 August 2018573 records
Cold outbreak in United States and Mexico, 18 July to 16 August 2018855 records
Extreme rain in Russia and 3 other countries, 18 to 23 July 2018109 records
Cold outbreak in Australia, 11 to 24 July 2018105 records
Extreme rain in Australia, 1 to 6 July 2018234 records
Extreme rain in Australia, 1 to 4 July 2018114 records
Extreme rain in United States, 1 to 28 July 20181,365 records
Cold outbreak in Germany and 15 other countries, 28 June to 5 July 2018182 records
Heat wave in Australia, 27 June to 8 July 2018357 records
Heat wave in Turkmenistan and 6 other countries, 27 June to 25 July 2018307 records
Extreme rain in Australia, 26 to 29 June 2018138 records
Cold outbreak in United States, 25 June to 6 July 2018127 records
Heat wave in Japan and 2 other countries, 22 June to 5 July 2018306 records
Heat wave in Russia and 3 other countries, 15 June to 3 July 2018292 records
Extreme rain in United States and Mexico, 14 June to 2 July 20181,600 records
Extreme rain in Sweden and 3 other countries, 13 to 23 June 2018266 records
Extreme rain in Australia, 12 to 19 June 2018213 records
Extreme rain in United States, 7 to 14 June 2018265 records
Cold outbreak in Russia and 9 other countries, 5 to 19 June 2018177 records
Extreme rain in Germany and 7 other countries, 4 to 14 June 2018170 records
Extreme rain in Netherlands and 5 other countries, 27 May to 2 June 2018256 records
Heat wave in Russia and 6 other countries, 22 May to 12 June 2018554 records
Heat wave in Australia, 21 to 30 May 2018149 records
Cold outbreak in Russia and 8 other countries, 15 May to 5 June 2018511 records
Cold outbreak in United States, 12 to 31 May 2018103 records
Extreme rain in Germany and 13 other countries, 12 to 17 May 2018162 records
Extreme rain in Australia, 10 to 13 May 2018256 records
Extreme rain in Sweden and 4 other countries, 10 to 12 May 2018113 records
Heat wave in Australia, 10 to 27 May 2018143 records
Heat wave in Japan and 5 other countries, 10 to 25 May 2018505 records
Extreme rain in United States, 6 May to 4 June 20181,729 records
Extreme rain in Australia, 3 to 4 May 2018137 records
Extreme rain in United States, 1 to 5 May 2018311 records
Cold outbreak in United States, 29 April to 4 May 2018108 records
Extreme rain in Netherlands and 9 other countries, 28 April to 1 May 2018412 records
Extreme rain in United States, 28 April to 4 May 2018208 records
Heat wave in Russia and Mongolia, 28 April to 13 May 2018254 records
Extreme rain in United States, 19 to 26 April 2018359 records
Heat wave in Argentina and 2 other countries, 17 April to 11 May 2018227 records
Heat wave in Japan and 4 other countries, 16 April to 3 May 2018201 records
Heat wave in Russia and 3 other countries, 16 to 29 April 2018239 records
Extreme rain in Australia, 13 to 16 April 2018129 records
Extreme rain in Germany and 2 other countries, 9 to 14 April 2018170 records
Cold outbreak in Thailand and 2 other countries, 3 to 11 April 2018100 records
Extreme rain in Sweden and 3 other countries, 3 to 6 April 2018107 records
Extreme rain in United States, 3 to 17 April 20181,388 records
Heat wave in Russia, 28 March to 8 April 2018106 records
Extreme rain in Netherlands and 5 other countries, 27 March to 5 April 2018307 records
Heat wave in United States and Mexico, 27 March to 20 April 20181,578 records
Cold outbreak in Sweden and 6 other countries, 24 March to 4 April 2018272 records
Extreme rain in Australia, 24 to 27 March 2018126 records
Extreme rain in United States, 24 March to 1 April 2018447 records
Extreme rain in United States, 20 to 29 March 2018399 records
Heat wave in United States and Mexico, 20 to 29 March 2018455 records
Cold outbreak in United States, 17 to 28 March 2018165 records
Snow event in Netherlands and 3 other countries, 17 to 24 March 2018142 records
Heat wave in Russia and 11 other countries, 16 March to 7 April 20181,682 records
Cold outbreak in Germany and 31 other countries, 15 to 27 March 20181,508 records
Heat wave in Australia, 15 to 22 March 2018106 records
Cold outbreak in United States, 14 to 29 March 2018344 records
Extreme rain in United States, 13 to 21 March 2018351 records
Extreme rain in Sweden and 18 other countries, 10 to 20 March 2018415 records
Heat wave in Germany and 39 other countries, 7 to 30 March 2018476 records
Heat wave in Japan and 11 other countries, 6 to 17 March 2018468 records
Heat wave in United States and Mexico, 6 to 21 March 2018353 records
Extreme rain in United States, 1 to 3 March 2018172 records
Extreme rain in United States, 23 February to 6 March 2018378 records
Cold outbreak in Germany and 34 other countries, 21 February to 15 March 20182,836 records
Extreme rain in Australia, 19 February to 9 March 2018904 records
Extreme rain in United States, 14 February to 2 March 20181,624 records
Extreme rain in United States, 14 to 21 February 2018213 records
Heat wave in Australia, 7 to 21 February 2018256 records
Extreme rain in United States, 6 to 12 February 2018563 records
Cold outbreak in Japan and 2 other countries, 4 to 9 February 2018105 records
Cold outbreak in Spain and 6 other countries, 2 to 11 February 2018113 records
Extreme rain in Russia and 6 other countries, 1 to 6 February 2018185 records
Extreme rain in United States, 1 to 16 February 2018580 records
Extreme rain in Sweden and 3 other countries, 30 January to 3 February 2018134 records
Cold outbreak in Australia, 29 January to 14 February 2018157 records
Extreme rain in United States, 27 to 30 January 2018184 records
Extreme rain in Australia, 25 January to 2 February 2018209 records
Heat wave in Russia, 25 January to 3 February 2018156 records
Extreme rain in Sweden and 3 other countries, 23 to 25 January 2018132 records
Cold outbreak in Russia and 6 other countries, 18 to 28 January 2018526 records
Extreme rain in United States, 18 to 24 January 2018519 records
Heat wave in Australia, 16 to 31 January 2018430 records
Extreme rain in Netherlands and 7 other countries, 15 to 24 January 2018419 records
Heat wave in Japan and 3 other countries, 15 to 18 January 2018115 records
Extreme rain in Sweden and 2 other countries, 14 to 18 January 2018143 records
Cold outbreak in United States and Mexico, 11 to 20 January 20181,212 records
Extreme rain in United States, 11 to 17 January 2018496 records
Extreme rain in United States, 8 to 15 January 2018454 records
Extreme rain in Australia, 5 to 18 January 2018485 records
Heat wave in Australia, 2 to 14 January 2018227 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.