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Weather Records on 27 May 1918

39 weather records were set or tied worldwide on 27 May 1918. Highest significance: Philadelphia City, US.

Key Facts for 27 May 1918

  • On 27 May 1918, 39 weather records were set or tied at long-record stations worldwide.
  • 10 were record highs and 24 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 38 daily.
  • Philadelphia City set a monthly record daily precipitation of 80.3 mm (3.2 in) on 27 May 1918.
  • Across 164 earlier years (1797 to 2026) the same calendar date averaged 420 records.

Record Map

39 stations
Weather records on 27 May 1918 39 station records on 27 May 1918 are marked on the map, coloured by record type.
39 station records on 27 May 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 27 May 1918: highest significance records shown on the map
StationCountryTypeValueSignificance
Philadelphia CityUnited StatesRecord daily precipitation80.3 mm (3.2 in)26 of 100 (Routine)
MilanItalyRecord daily precipitation32.8 mm (1.3 in)23 of 100 (Routine)
Medicine Hat ACanadaRecord low minimum temperature-4.4 C (24.1 F)21 of 100 (Routine)
Cleveland 2717 EuclidUnited StatesRecord high minimum temperature22.2 C (72.0 F)21 of 100 (Routine)
ColdwaterCanadaRecord daily precipitation23.9 mm (0.9 in)20 of 100 (Routine)
Saint JohnCanadaRecord low maximum temperature7.8 C (46.0 F)20 of 100 (Routine)
Belle IsleCanadaRecord low minimum temperature-7.2 C (19.0 F)19 of 100 (Routine)
Wagga Wagga (Kooringal)AustraliaRecord low minimum temperature-5.6 C (21.9 F)18 of 100 (Routine)
Swift CurrentCanadaRecord low minimum temperature-2.2 C (28.0 F)18 of 100 (Routine)
SydneyCanadaRecord low minimum temperature-1.1 C (30.0 F)17 of 100 (Routine)
VastervikSwedenRecord low minimum temperature1.5 C (34.7 F)17 of 100 (Routine)
Qu'appelleCanadaRecord low minimum temperature-4.4 C (24.1 F)14 of 100 (Routine)
Parry SoundCanadaRecord daily precipitation39.6 mm (1.6 in)14 of 100 (Routine)
Deniliquin (Wilkinson St)AustraliaRecord low maximum temperature10.6 C (51.1 F)12 of 100 (Routine)
Skara 1SwedenRecord low minimum temperature0.5 C (32.9 F)12 of 100 (Routine)
Morris W Cntrl Rsch & OutreachUnited StatesRecord low maximum temperature13.9 C (57.0 F)12 of 100 (Routine)
Bourke Post OfficeAustraliaRecord low minimum temperature0.0 C (32.0 F)11 of 100 (Routine)
Wilmington Wb CityUnited StatesRecord high maximum temperature33.3 C (91.9 F)11 of 100 (Routine)
Winnemucca APUnited StatesRecord low maximum temperature12.8 C (55.0 F)11 of 100 (Routine)
EkaterinburgRussiaRecord low minimum temperature-3.8 C (25.2 F)9 of 100 (Routine)
Calgary Int'l ACanadaRecord low minimum temperature-1.1 C (30.0 F)7 of 100 (Routine)
WoodstockCanadaRecord high minimum temperature17.8 C (64.0 F)7 of 100 (Routine)
Anticosti SW PointCanadaRecord low maximum temperature4.4 C (39.9 F)7 of 100 (Routine)
HvarCroatiaRecord high minimum temperature19.2 C (66.6 F)6 of 100 (Routine)
State CollegeUnited StatesRecord high minimum temperature21.7 C (71.1 F)6 of 100 (Routine)
YarmouthCanadaRecord low maximum temperature9.4 C (48.9 F)5 of 100 (Routine)
Harrisburg - CoopUnited StatesRecord high maximum temperature32.8 C (91.0 F)5 of 100 (Routine)
Port ArthurCanadaRecord low maximum temperature10.0 C (50.0 F)3 of 100 (Routine)
CharlottetownCanadaRecord low minimum temperature1.1 C (34.0 F)3 of 100 (Routine)
Fredericton UnbCanadaRecord low maximum temperature10.0 C (50.0 F)2 of 100 (Routine)
StockholmSwedenRecord low minimum temperature2.0 C (35.6 F)2 of 100 (Routine)
EdmontonCanadaRecord low maximum temperature12.2 C (54.0 F)1 of 100 (Routine)
HalifaxCanadaRecord low minimum temperature-0.6 C (30.9 F)1 of 100 (Routine)
St John'sCanadaRecord low minimum temperature-2.2 C (28.0 F)1 of 100 (Routine)
KirovRussiaRecord daily precipitation10.5 mm (0.4 in)1 of 100 (Routine)
NewportUnited StatesRecord high maximum temperature34.4 C (93.9 F)1 of 100 (Routine)
Toledo BladeUnited StatesRecord high minimum temperature21.1 C (70.0 F)1 of 100 (Routine)
State CollegeUnited StatesRecord high maximum temperature28.3 C (82.9 F)1 of 100 (Routine)
Baltimore Customs HouseUnited StatesRecord high maximum temperature34.4 C (93.9 F)1 of 100 (Routine)

Counts by Type and Timescale

39 records
Records on 27 May 1918 by type Records set or tied on 27 May 1918 by type: Highest daily maximum 5, Lowest daily maximum 9, Highest daily minimum 5, Lowest daily minimum 15, Heaviest daily rainfall 5. 051015Highest daily maximum: 5Lowest daily maximum: 9Highest daily minimum: 5Lowest daily minimum: 15Heaviest daily rainfall: 5Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 27 May 1918 by type: Highest daily maximum 5, Lowest daily maximum 9, Highest daily minimum 5, Lowest daily minimum 15, Heaviest daily rainfall 5.
Records on 27 May 1918 by type
Record typeRecords
Highest daily maximum5
Lowest daily maximum9
Highest daily minimum5
Lowest daily minimum15
Heaviest daily rainfall5
Heaviest daily snowfall0
Deepest snow cover0
Records on 27 May 1918 by timescale Records on 27 May 1918 by timescale: all-time 0, monthly 1, daily 38. 010203040all-time: 0monthly: 1daily: 38all-timemonthlydaily
Records on 27 May 1918 by timescale: all-time 0, monthly 1, daily 38.
Records on 27 May 1918 by timescale
TimescaleRecords
all-time0
monthly1
daily38

How Much Records Were Beaten By

27 broken records
Histogram of margins by which records were beaten on 27 May 1918 Margins by which the 27 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 15.5. Ties are not counted. 051015200 to 2: 182 to 4: 54 to 6: 16 to 8: 18 to 10: 110 to 12: 012 to 14: 014 to 16: 10 to 22 to 44 to 66 to 88 to 1010 to 1212 to 1414 to 16
Margins by which the 27 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 15.5. Ties are not counted.
Histogram of margins by which records were beaten on 27 May 1918
MarginRecords
0 to 218
2 to 45
4 to 61
6 to 81
8 to 101
10 to 120
12 to 140
14 to 161

Top 20 by Significance

27 May 1918
Top 20 records on 27 May 1918 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
27 May 1918Philadelphia City, USmonthly rain80.3 mm (3.2 in)5.6 mm (0.22 in)24 years26 of 100 (Routine)
27 May 1918Milan, ITdaily rain32.8 mm (1.3 in)9.0 mm (0.35 in)30 years23 of 100 (Routine)
27 May 1918Medicine Hat A, CAdaily low min-4.4 C (24.1 F)6.6 C (11.9 F)12 years21 of 100 (Routine)
27 May 1918Cleveland 2717 Euclid, USdaily high min22.2 C (72.0 F)1.6 C (2.9 F)46 years21 of 100 (Routine)
27 May 1918Coldwater, CAdaily rain23.9 mm (0.9 in)15.5 mm (0.6 in)34 years20 of 100 (Routine)
27 May 1918Saint John, CAdaily low max7.8 C (46.0 F)1.6 C (2.9 F)41 years20 of 100 (Routine)
27 May 1918Belle Isle, CAdaily low min-7.2 C (19.0 F)3.9 C (7.0 F)4 years19 of 100 (Routine)
27 May 1918Wagga Wagga (Kooringal), AUdaily low min-5.6 C (21.9 F)2.3 C (4.1 F)30 years18 of 100 (Routine)
27 May 1918Swift Current, CAdaily low min-2.2 C (28.0 F)3.3 C (5.9 F)29 years18 of 100 (Routine)
27 May 1918Sydney, CAdaily low min-1.1 C (30.0 F)1.7 C (3.1 F)27 years17 of 100 (Routine)
27 May 1918Vastervik, SEdaily low min1.5 C (34.7 F)1.5 C (2.7 F)33 years17 of 100 (Routine)
27 May 1918Qu'appelle, CAdaily low min-4.4 C (24.1 F)3.8 C (6.8 F)12 years14 of 100 (Routine)
27 May 1918Parry Sound, CAdaily rain39.6 mm (1.6 in)3.8 mm (0.15 in)18 years14 of 100 (Routine)
27 May 1918Deniliquin (Wilkinson St), AUdaily low max10.6 C (51.1 F)1.6 C (2.9 F)7 years12 of 100 (Routine)
27 May 1918Skara 1, SEdaily low min0.5 C (32.9 F)0.5 C (0.9 F)27 years12 of 100 (Routine)
27 May 1918Morris W Cntrl Rsch & Outreach, USdaily low max13.9 C (57.0 F)1.1 C (2.0 F)28 years12 of 100 (Routine)
27 May 1918Bourke Post Office, AUdaily low min0.0 C (32.0 F)0.6 C (1.1 F)20 years11 of 100 (Routine)
27 May 1918Wilmington Wb City, USdaily high max33.3 C (91.9 F)0.5 C (0.9 F)21 years11 of 100 (Routine)
27 May 1918Winnemucca AP, USdaily low max12.8 C (55.0 F)0.5 C (0.9 F)23 years11 of 100 (Routine)
27 May 1918Ekaterinburg, RUdaily low min-3.8 C (25.2 F)0.8 C (1.4 F)16 years9 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

1797 to 1918
Records on 05-27 in each year Records set or tied on this calendar date in each year from 1797 to 1918. 1918 had 39 records. 05001,0001,5002,0001797: 11817: 11818: 11834: 21836: 41839: 11845: 11846: 11847: 11849: 11852: 11858: 11860: 11863: 11864: 31868: 41869: 11874: 11876: 11879: 31880: 51881: 21883: 11884: 11885: 11886: 11888: 11889: 31890: 51891: 21892: 81893: 51894: 131895: 41896: 31897: 11898: 31899: 21900: 41901: 71902: 121903: 71904: 111905: 71906: 281907: 231908: 161909: 71910: 311911: 531912: 271913: 191914: 921915: 631916: 261917: 231918: 391919: 381920: 401921: 561922: 361923: 861924: 921925: 2911926: 1071927: 1831928: 811929: 1951930: 991931: 3671932: 2651933: 2841934: 3931935: 1281936: 4681937: 2981938: 4921939: 3121940: 1381941: 4361942: 6571943: 1601944: 4791945: 2721946: 4241947: 4851948: 3241949: 3661950: 6971951: 5781952: 2581953: 6031954: 3671955: 5711956: 4911957: 3671958: 6191959: 4491960: 4211961: 1,5041962: 4601963: 4211964: 3171965: 6521966: 3981967: 4921968: 6051969: 8501970: 3261971: 6121972: 5081973: 9431974: 6301975: 4041976: 5891977: 6631978: 8141979: 8991980: 6441981: 8911982: 8381983: 1,2531984: 8341985: 8731986: 6961987: 1,0371988: 7771989: 9041990: 8041991: 1,4291992: 1,4131993: 8351994: 8481995: 8151996: 1,3781997: 9191998: 1,0791999: 8762000: 1,3472001: 8982002: 5112003: 9182004: 8382005: 1,0942006: 1,1712007: 8862008: 9142009: 8582010: 9552011: 1,0552012: 1,4752013: 6072014: 8352015: 5372016: 6222017: 5412018: 1,3552019: 9602020: 9062021: 4142022: 6532023: 4052024: 9042025: 7612026: 1,1851797187418961913193019471964198119982015
Records set or tied on this calendar date in each year from 1797 to 1918. 1918 had 39 records.
Counts for years before the ledger starts come from the same station rules.
Records on 05-27 in each year
YearRecords
17971
18171
18181
18342
18364
18391
18451
18461
18471
18491
18521
18581
18601
18631
18643
18684
18691
18741
18761
18793
18805
18812
18831
18841
18851
18861
18881
18893
18905
18912
18928
18935
189413
18954
18963
18971
18983
18992
19004
19017
190212
19037
190411
19057
190628
190723
190816
19097
191031
191153
191227
191319
191492
191563
191626
191723
191839
191938
192040
192156
192236
192386
192492
1925291
1926107
1927183
192881
1929195
193099
1931367
1932265
1933284
1934393
1935128
1936468
1937298
1938492
1939312
1940138
1941436
1942657
1943160
1944479
1945272
1946424
1947485
1948324
1949366
1950697
1951578
1952258
1953603
1954367
1955571
1956491
1957367
1958619
1959449
1960421
19611,504
1962460
1963421
1964317
1965652
1966398
1967492
1968605
1969850
1970326
1971612
1972508
1973943
1974630
1975404
1976589
1977663
1978814
1979899
1980644
1981891
1982838
19831,253
1984834
1985873
1986696
19871,037
1988777
1989904
1990804
19911,429
19921,413
1993835
1994848
1995815
19961,378
1997919
19981,079
1999876
20001,347
2001898
2002511
2003918
2004838
20051,094
20061,171
2007886
2008914
2009858
2010955
20111,055
20121,475
2013607
2014835
2015537
2016622
2017541
20181,355
2019960
2020906
2021414
2022653
2023405
2024904
2025761
20261,185

Download the Data

  • Data for records on 1918-05-27: 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).