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Weather Records on 31 May 1918

20 weather records were set or tied worldwide on 31 May 1918. Highest significance: Lexington Bluegrass AP, US.

Key Facts for 31 May 1918

  • On 31 May 1918, 20 weather records were set or tied at long-record stations worldwide.
  • 15 were record highs and 4 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 19 daily.
  • Lexington Bluegrass AP set a monthly record high minimum temperature of 23.3 C (73.9 F) on 31 May 1918.
  • Across 161 earlier years (1811 to 2026) the same calendar date averaged 440 records.

Record Map

20 stations
Weather records on 31 May 1918 20 station records on 31 May 1918 are marked on the map, coloured by record type.
20 station records on 31 May 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 31 May 1918: highest significance records shown on the map
StationCountryTypeValueSignificance
Lexington Bluegrass APUnited StatesRecord high minimum temperature23.3 C (73.9 F)27 of 100 (Routine)
Morgantown 1United StatesRecord high minimum temperature20.6 C (69.1 F)21 of 100 (Routine)
Nuwara EliyaSri LankaRecord low minimum temperature8.2 C (46.8 F)20 of 100 (Routine)
BarkervilleCanadaRecord daily snowfall3.3 cm (1.3 in)19 of 100 (Routine)
Guelph OacCanadaRecord high minimum temperature14.4 C (57.9 F)15 of 100 (Routine)
La Crosse Wb CityUnited StatesRecord high maximum temperature30.6 C (87.1 F)12 of 100 (Routine)
Dubuque RiverUnited StatesRecord high maximum temperature30.6 C (87.1 F)11 of 100 (Routine)
Chattanooga Wb CityUnited StatesRecord high maximum temperature34.4 C (93.9 F)11 of 100 (Routine)
MinnedosaCanadaRecord high maximum temperature27.8 C (82.0 F)10 of 100 (Routine)
Belle IsleCanadaRecord low minimum temperature-3.9 C (25.0 F)10 of 100 (Routine)
RenfrewCanadaRecord high minimum temperature16.1 C (61.0 F)9 of 100 (Routine)
SimferopolUkraineRecord low minimum temperature0.7 C (33.3 F)9 of 100 (Routine)
BarkervilleCanadaRecord low maximum temperature5.6 C (42.1 F)8 of 100 (Routine)
Stony MountainCanadaRecord high maximum temperature30.6 C (87.1 F)8 of 100 (Routine)
Stornoway AirportUnited KingdomRecord high minimum temperature10.6 C (51.1 F)3 of 100 (Routine)
Qu'appelleCanadaRecord high maximum temperature26.7 C (80.1 F)2 of 100 (Routine)
Winnipeg St Johns CollCanadaRecord high minimum temperature15.6 C (60.1 F)2 of 100 (Routine)
Bird RocksCanadaRecord high minimum temperature6.1 C (43.0 F)2 of 100 (Routine)
Little Rock St CapitolUnited StatesRecord high minimum temperature22.8 C (73.0 F)2 of 100 (Routine)
Milwaukee Wb CityUnited StatesRecord high maximum temperature31.7 C (89.1 F)2 of 100 (Routine)

Counts by Type and Timescale

20 records
Records on 31 May 1918 by type Records set or tied on 31 May 1918 by type: Highest daily maximum 7, Lowest daily maximum 1, Highest daily minimum 8, Lowest daily minimum 3, Heaviest daily snowfall 1. 02468Highest daily maximum: 7Lowest daily maximum: 1Highest daily minimum: 8Lowest daily minimum: 3Heaviest daily rainfall: 0Heaviest daily snowfall: 1Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 31 May 1918 by type: Highest daily maximum 7, Lowest daily maximum 1, Highest daily minimum 8, Lowest daily minimum 3, Heaviest daily snowfall 1.
Records on 31 May 1918 by type
Record typeRecords
Highest daily maximum7
Lowest daily maximum1
Highest daily minimum8
Lowest daily minimum3
Heaviest daily rainfall0
Heaviest daily snowfall1
Deepest snow cover0
Records on 31 May 1918 by timescale Records on 31 May 1918 by timescale: all-time 0, monthly 1, daily 19. 05101520all-time: 0monthly: 1daily: 19all-timemonthlydaily
Records on 31 May 1918 by timescale: all-time 0, monthly 1, daily 19.
Records on 31 May 1918 by timescale
TimescaleRecords
all-time0
monthly1
daily19

How Much Records Were Beaten By

14 broken records
Histogram of margins by which records were beaten on 31 May 1918 Margins by which the 14 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 33.0. Ties are not counted. 0510150 to 5: 135 to 10: 010 to 15: 015 to 20: 020 to 25: 025 to 30: 030 to 35: 10 to 55 to 1010 to 1515 to 2020 to 2525 to 3030 to 35
Margins by which the 14 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 33.0. Ties are not counted.
Histogram of margins by which records were beaten on 31 May 1918
MarginRecords
0 to 513
5 to 100
10 to 150
15 to 200
20 to 250
25 to 300
30 to 351

Top 20 by Significance

31 May 1918
Top 20 records on 31 May 1918 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
31 May 1918Lexington Bluegrass AP, USmonthly high min23.3 C (73.9 F)0.5 C (0.9 F)43 years27 of 100 (Routine)
31 May 1918Morgantown 1, USdaily high min20.6 C (69.1 F)2.3 C (4.1 F)43 years21 of 100 (Routine)
31 May 1918Nuwara Eliya, LKdaily low min8.2 C (46.8 F)0.7 C (1.3 F)42 years20 of 100 (Routine)
31 May 1918Barkerville, CAdaily snowfall3.3 cm (1.3 in)3.3 cm (1.3 in)29 years19 of 100 (Routine)
31 May 1918Guelph Oac, CAdaily high min14.4 C (57.9 F)0.5 C (0.9 F)36 years15 of 100 (Routine)
31 May 1918La Crosse Wb City, USdaily high max30.6 C (87.1 F)1.7 C (3.1 F)22 years12 of 100 (Routine)
31 May 1918Dubuque River, USdaily high max30.6 C (87.1 F)0.6 C (1.1 F)22 years11 of 100 (Routine)
31 May 1918Chattanooga Wb City, USdaily high max34.4 C (93.9 F)0.5 C (0.9 F)22 years11 of 100 (Routine)
31 May 1918Minnedosa, CAdaily high max27.8 C (82.0 F)0.6 C (1.1 F)23 years10 of 100 (Routine)
31 May 1918Belle Isle, CAdaily low min-3.9 C (25.0 F)1.7 C (3.1 F)4 years10 of 100 (Routine)
31 May 1918Renfrew, CAdaily high min16.1 C (61.0 F)0.5 C (0.9 F)22 years9 of 100 (Routine)
31 May 1918Simferopol, UAdaily low min0.7 C (33.3 F)1.9 C (3.4 F)5 years9 of 100 (Routine)
31 May 1918Barkerville, CAdaily low max5.6 C (42.1 F)2.2 C (4.0 F)5 years8 of 100 (Routine)
31 May 1918Stony Mountain, CAdaily high max30.6 C (87.1 F)2.8 C (5.0 F)3 years8 of 100 (Routine)
31 May 1918Stornoway Airport, GBdaily high min (Tie)10.6 C (51.1 F)tie36 years3 of 100 (Routine)
31 May 1918Qu'appelle, CAdaily high max (Tie)26.7 C (80.1 F)tie16 years2 of 100 (Routine)
31 May 1918Winnipeg St Johns Coll, CAdaily high min (Tie)15.6 C (60.1 F)tie16 years2 of 100 (Routine)
31 May 1918Bird Rocks, CAdaily high min (Tie)6.1 C (43.0 F)tie22 years2 of 100 (Routine)
31 May 1918Little Rock St Capitol, USdaily high min (Tie)22.8 C (73.0 F)tie22 years2 of 100 (Routine)
31 May 1918Milwaukee Wb City, USdaily high max (Tie)31.7 C (89.1 F)tie22 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

1811 to 1918
Records on 05-31 in each year Records set or tied on this calendar date in each year from 1811 to 1918. 1918 had 20 records. 01,0002,0003,0001811: 11818: 31827: 11836: 21845: 11847: 11853: 21855: 21858: 11864: 21865: 11866: 11867: 11868: 41869: 11871: 21873: 31874: 11877: 11878: 21879: 21880: 31882: 11883: 11885: 11888: 11889: 21890: 11892: 11893: 41894: 21895: 81897: 51898: 71899: 11900: 21901: 91902: 91903: 171904: 191905: 71906: 111907: 201908: 121909: 81910: 261911: 201912: 151913: 831914: 201915: 231916: 231917: 131918: 201919: 441920: 461921: 1571922: 491923: 981924: 1521925: 2261926: 2281927: 1211928: 671929: 2461930: 6121931: 2231932: 1811933: 3971934: 7821935: 1561936: 5591937: 4621938: 4241939: 4611940: 3831941: 4101942: 3641943: 5521944: 3721945: 4571946: 3801947: 4391948: 2951949: 3031950: 4671951: 6401952: 3741953: 6541954: 4451955: 5341956: 6321957: 3041958: 4291959: 4591960: 2471961: 4721962: 5651963: 3541964: 1,2371965: 4941966: 6011967: 9871968: 2761969: 5551970: 5731971: 7141972: 1,1271973: 4181974: 4731975: 7971976: 4351977: 6051978: 8731979: 9151980: 5171981: 7751982: 8171983: 1,4941984: 2,0471985: 7901986: 1,3651987: 8221988: 1,2551989: 9121990: 9001991: 1,3811992: 1,0311993: 9821994: 7761995: 6931996: 9461997: 1,1631998: 1,2151999: 7902000: 1,1722001: 1,0472002: 1,1622003: 8312004: 1,0712005: 7242006: 1,0452007: 7932008: 8092009: 5702010: 7412011: 1,4982012: 7642013: 1,1002014: 5652015: 7042016: 4022017: 4402018: 1,2112019: 4202020: 6732021: 8342022: 9022023: 4542024: 8092025: 1,2042026: 5361811187418991916193319501967198420012018
Records set or tied on this calendar date in each year from 1811 to 1918. 1918 had 20 records.
Counts for years before the ledger starts come from the same station rules.
Records on 05-31 in each year
YearRecords
18111
18183
18271
18362
18451
18471
18532
18552
18581
18642
18651
18661
18671
18684
18691
18712
18733
18741
18771
18782
18792
18803
18821
18831
18851
18881
18892
18901
18921
18934
18942
18958
18975
18987
18991
19002
19019
19029
190317
190419
19057
190611
190720
190812
19098
191026
191120
191215
191383
191420
191523
191623
191713
191820
191944
192046
1921157
192249
192398
1924152
1925226
1926228
1927121
192867
1929246
1930612
1931223
1932181
1933397
1934782
1935156
1936559
1937462
1938424
1939461
1940383
1941410
1942364
1943552
1944372
1945457
1946380
1947439
1948295
1949303
1950467
1951640
1952374
1953654
1954445
1955534
1956632
1957304
1958429
1959459
1960247
1961472
1962565
1963354
19641,237
1965494
1966601
1967987
1968276
1969555
1970573
1971714
19721,127
1973418
1974473
1975797
1976435
1977605
1978873
1979915
1980517
1981775
1982817
19831,494
19842,047
1985790
19861,365
1987822
19881,255
1989912
1990900
19911,381
19921,031
1993982
1994776
1995693
1996946
19971,163
19981,215
1999790
20001,172
20011,047
20021,162
2003831
20041,071
2005724
20061,045
2007793
2008809
2009570
2010741
20111,498
2012764
20131,100
2014565
2015704
2016402
2017440
20181,211
2019420
2020673
2021834
2022902
2023454
2024809
20251,204
2026536

Download the Data

  • Data for records on 1918-05-31: 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).