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Built 2026-10-19 (19 October 2026)

Weather Records on 18 May 1903

7 weather records were set or tied worldwide on 18 May 1903. Highest significance: Halifax, CA.

Key Facts for 18 May 1903

  • On 18 May 1903, 7 weather records were set or tied at long-record stations worldwide.
  • 5 were record highs and 1 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 7 daily.
  • Halifax set a daily record high maximum temperature of 27.8 C (82.0 F) on 18 May 1903.
  • Across 164 earlier years (1796 to 2026) the same calendar date averaged 445 records.

Record Map

7 stations
Weather records on 18 May 1903 7 station records on 18 May 1903 are marked on the map, coloured by record type.
7 station records on 18 May 1903 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 18 May 1903: highest significance records shown on the map
StationCountryTypeValueSignificance
HalifaxCanadaRecord high maximum temperature27.8 C (82.0 F)12 of 100 (Routine)
World Trade CtrUnited StatesRecord high maximum temperature30.6 C (87.1 F)12 of 100 (Routine)
PeterboroughCanadaRecord high maximum temperature28.9 C (84.0 F)11 of 100 (Routine)
Newark Liberty Intl APUnited StatesRecord high maximum temperature33.3 C (91.9 F)11 of 100 (Routine)
Ilulissat (Jakobshavn)Greenland [Denmark]Record low minimum temperature-11.2 C (11.8 F)9 of 100 (Routine)
VastervikSwedenRecord daily precipitation12.3 mm (0.5 in)7 of 100 (Routine)
Saint JohnCanadaRecord high maximum temperature22.2 C (72.0 F)2 of 100 (Routine)

Counts by Type and Timescale

7 records
Records on 18 May 1903 by type Records set or tied on 18 May 1903 by type: Highest daily maximum 5, Lowest daily minimum 1, Heaviest daily rainfall 1. 0246Highest daily maximum: 5Lowest daily maximum: 0Highest daily minimum: 0Lowest daily minimum: 1Heaviest daily rainfall: 1Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 18 May 1903 by type: Highest daily maximum 5, Lowest daily minimum 1, Heaviest daily rainfall 1.
Records on 18 May 1903 by type
Record typeRecords
Highest daily maximum5
Lowest daily maximum0
Highest daily minimum0
Lowest daily minimum1
Heaviest daily rainfall1
Heaviest daily snowfall0
Deepest snow cover0
Records on 18 May 1903 by timescale Records on 18 May 1903 by timescale: all-time 0, monthly 0, daily 7. 02468all-time: 0monthly: 0daily: 7all-timemonthlydaily
Records on 18 May 1903 by timescale: all-time 0, monthly 0, daily 7.
Records on 18 May 1903 by timescale
TimescaleRecords
all-time0
monthly0
daily7

How Much Records Were Beaten By

6 broken records
Histogram of margins by which records were beaten on 18 May 1903 Margins by which the 6 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 2.8. Ties are not counted. 011220.0 to 0.5: 00.5 to 1.0: 11.0 to 1.5: 11.5 to 2.0: 22.0 to 2.5: 12.5 to 3.0: 10.0 to 0.50.5 to 1.01.0 to 1.51.5 to 2.02.0 to 2.52.5 to 3.0
Margins by which the 6 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 2.8. Ties are not counted.
Histogram of margins by which records were beaten on 18 May 1903
MarginRecords
0.0 to 0.50
0.5 to 1.01
1.0 to 1.51
1.5 to 2.02
2.0 to 2.51
2.5 to 3.01

Top 20 by Significance

18 May 1903
Top 7 records on 18 May 1903 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
18 May 1903Halifax, CAdaily high max27.8 C (82.0 F)2.8 C (5.0 F)13 years12 of 100 (Routine)
18 May 1903World Trade Ctr, USdaily high max30.6 C (87.1 F)1.2 C (2.2 F)25 years12 of 100 (Routine)
18 May 1903Peterborough, CAdaily high max28.9 C (84.0 F)0.6 C (1.1 F)25 years11 of 100 (Routine)
18 May 1903Newark Liberty Intl AP, USdaily high max33.3 C (91.9 F)1.6 C (2.9 F)6 years11 of 100 (Routine)
18 May 1903Ilulissat (Jakobshavn), GLdaily low min-11.2 C (11.8 F)2.0 C (3.6 F)6 years9 of 100 (Routine)
18 May 1903Vastervik, SEdaily rain12.3 mm (0.5 in)1.6 mm (0.06 in)0 years7 of 100 (Routine)
18 May 1903Saint John, CAdaily high max (Tie)22.2 C (72.0 F)tie17 years2 of 100 (Routine)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1796 to 1903
Records on 05-18 in each year Records set or tied on this calendar date in each year from 1796 to 1903. 1903 had 7 records. 05001,0001,5002,0001796: 11798: 11802: 21832: 11833: 11845: 11847: 11848: 11855: 11859: 11861: 21863: 31864: 11866: 21868: 21869: 11870: 11871: 21872: 11874: 21877: 41878: 11879: 11881: 11883: 21884: 21885: 11887: 11888: 41889: 21891: 11893: 21894: 41895: 51896: 21897: 21898: 11899: 11900: 131901: 61902: 91903: 71904: 111905: 21906: 241907: 181908: 51909: 121910: 501911: 641912: 51913: 111914: 451915: 551916: 741917: 301918: 421919: 301920: 261921: 411922: 331923: 611924: 921925: 2201926: 1331927: 1801928: 1601929: 1931930: 4751931: 1911932: 4601933: 3801934: 3901935: 4001936: 2821937: 3481938: 3821939: 1691940: 3151941: 3341942: 4211943: 7441944: 4961945: 7061946: 6511947: 2311948: 4261949: 5971950: 4731951: 2791952: 4931953: 3931954: 4981955: 8481956: 7951957: 5951958: 3341959: 4351960: 4041961: 1871962: 1,1991963: 4771964: 3291965: 3451966: 4381967: 4101968: 8171969: 8651970: 7031971: 6661972: 4991973: 1,2331974: 1,0971975: 3831976: 7331977: 1,1261978: 1,0901979: 3991980: 6141981: 1,2181982: 4521983: 1,0931984: 7171985: 4981986: 1,1311987: 8231988: 1,1541989: 7211990: 7531991: 1,2181992: 9211993: 7071994: 1,0151995: 1,8491996: 1,7671997: 1,1151998: 1,0601999: 5842000: 9222001: 8982002: 1,8332003: 1,2702004: 8472005: 6302006: 1,4932007: 1,1332008: 9992009: 1,3682010: 8942011: 1,4062012: 5232013: 8162014: 6092015: 7852016: 5972017: 1,8552018: 5572019: 8102020: 7062021: 4182022: 7112023: 5542024: 5512025: 6192026: 1,1311796187118961913193019471964198119982015
Records set or tied on this calendar date in each year from 1796 to 1903. 1903 had 7 records.
Counts for years before the ledger starts come from the same station rules.
Records on 05-18 in each year
YearRecords
17961
17981
18022
18321
18331
18451
18471
18481
18551
18591
18612
18633
18641
18662
18682
18691
18701
18712
18721
18742
18774
18781
18791
18811
18832
18842
18851
18871
18884
18892
18911
18932
18944
18955
18962
18972
18981
18991
190013
19016
19029
19037
190411
19052
190624
190718
19085
190912
191050
191164
19125
191311
191445
191555
191674
191730
191842
191930
192026
192141
192233
192361
192492
1925220
1926133
1927180
1928160
1929193
1930475
1931191
1932460
1933380
1934390
1935400
1936282
1937348
1938382
1939169
1940315
1941334
1942421
1943744
1944496
1945706
1946651
1947231
1948426
1949597
1950473
1951279
1952493
1953393
1954498
1955848
1956795
1957595
1958334
1959435
1960404
1961187
19621,199
1963477
1964329
1965345
1966438
1967410
1968817
1969865
1970703
1971666
1972499
19731,233
19741,097
1975383
1976733
19771,126
19781,090
1979399
1980614
19811,218
1982452
19831,093
1984717
1985498
19861,131
1987823
19881,154
1989721
1990753
19911,218
1992921
1993707
19941,015
19951,849
19961,767
19971,115
19981,060
1999584
2000922
2001898
20021,833
20031,270
2004847
2005630
20061,493
20071,133
2008999
20091,368
2010894
20111,406
2012523
2013816
2014609
2015785
2016597
20171,855
2018557
2019810
2020706
2021418
2022711
2023554
2024551
2025619
20261,131

Download the Data

  • Data for records on 1903-05-18: CSV or JSON. Field meanings are on the data page.

Sources: 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)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).