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Weather Records on 31 May 1917

13 weather records were set or tied worldwide on 31 May 1917. Highest significance: Port Arthur, CA.

Key Facts for 31 May 1917

  • On 31 May 1917, 13 weather records were set or tied at long-record stations worldwide.
  • 5 were record highs and 3 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 13 daily.
  • Port Arthur set a daily record precipitation of 32.3 mm (1.3 in) on 31 May 1917.
  • Across 161 earlier years (1811 to 2026) the same calendar date averaged 440 records.

Record Map

13 stations
Weather records on 31 May 1917 13 station records on 31 May 1917 are marked on the map, coloured by record type.
13 station records on 31 May 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 31 May 1917: highest significance records shown on the map
StationCountryTypeValueSignificance
Port ArthurCanadaRecord daily precipitation32.3 mm (1.3 in)32 of 100 (Routine)
Pointe Au PereCanadaRecord low minimum temperature-0.6 C (30.9 F)15 of 100 (Routine)
MusgraveAustraliaRecord daily precipitation3.0 mm (0.12 in)13 of 100 (Routine)
Forbes (Camp Street)AustraliaRecord high maximum temperature23.5 C (74.3 F)11 of 100 (Routine)
Swift CurrentCanadaRecord low minimum temperature-1.1 C (30.0 F)11 of 100 (Routine)
GavleSwedenRecord high minimum temperature13.0 C (55.4 F)10 of 100 (Routine)
InnisfailAustraliaRecord daily precipitation38.6 mm (1.5 in)9 of 100 (Routine)
WellandCanadaRecord daily precipitation26.2 mm (1.0 in)7 of 100 (Routine)
ManfredAustraliaRecord daily precipitation11.4 mm (0.4 in)5 of 100 (Routine)
Nemours (Ghazaouet)AlgeriaRecord low minimum temperature10.0 C (50.0 F)2 of 100 (Routine)
HarnosandSwedenRecord high minimum temperature10.0 C (50.0 F)1 of 100 (Routine)
StockholmSwedenRecord high minimum temperature13.0 C (55.4 F)1 of 100 (Routine)
Houston Wb CityUnited StatesRecord high minimum temperature25.0 C (77.0 F)1 of 100 (Routine)

Counts by Type and Timescale

13 records
Records on 31 May 1917 by type Records set or tied on 31 May 1917 by type: Highest daily maximum 1, Highest daily minimum 4, Lowest daily minimum 3, Heaviest daily rainfall 5. 0246Highest daily maximum: 1Lowest daily maximum: 0Highest daily minimum: 4Lowest daily minimum: 3Heaviest daily rainfall: 5Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 31 May 1917 by type: Highest daily maximum 1, Highest daily minimum 4, Lowest daily minimum 3, Heaviest daily rainfall 5.
Records on 31 May 1917 by type
Record typeRecords
Highest daily maximum1
Lowest daily maximum0
Highest daily minimum4
Lowest daily minimum3
Heaviest daily rainfall5
Heaviest daily snowfall0
Deepest snow cover0
Records on 31 May 1917 by timescale Records on 31 May 1917 by timescale: all-time 0, monthly 0, daily 13. 051015all-time: 0monthly: 0daily: 13all-timemonthlydaily
Records on 31 May 1917 by timescale: all-time 0, monthly 0, daily 13.
Records on 31 May 1917 by timescale
TimescaleRecords
all-time0
monthly0
daily13

How Much Records Were Beaten By

9 broken records
Histogram of margins by which records were beaten on 31 May 1917 Margins by which the 9 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 16.0. Ties are not counted. 02460 to 2: 62 to 4: 14 to 6: 06 to 8: 18 to 10: 010 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 9 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 16.0. Ties are not counted.
Histogram of margins by which records were beaten on 31 May 1917
MarginRecords
0 to 26
2 to 41
4 to 60
6 to 81
8 to 100
10 to 120
12 to 140
14 to 161

Top 20 by Significance

31 May 1917
Top 13 records on 31 May 1917 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
31 May 1917Port Arthur, CAdaily rain32.3 mm (1.3 in)16.0 mm (0.6 in)17 years32 of 100 (Routine)
31 May 1917Pointe Au Pere, CAdaily low min-0.6 C (30.9 F)0.6 C (1.1 F)32 years15 of 100 (Routine)
31 May 1917Musgrave, AUdaily rain3.0 mm (0.12 in)3.0 mm (0.12 in)29 years13 of 100 (Routine)
31 May 1917Forbes (Camp Street), AUdaily high max23.5 C (74.3 F)0.2 C (0.4 F)25 years11 of 100 (Routine)
31 May 1917Swift Current, CAdaily low min-1.1 C (30.0 F)0.5 C (0.9 F)25 years11 of 100 (Routine)
31 May 1917Gavle, SEdaily high min13.0 C (55.4 F)1.5 C (2.7 F)12 years10 of 100 (Routine)
31 May 1917Innisfail, AUdaily rain38.6 mm (1.5 in)6.6 mm (0.26 in)15 years9 of 100 (Routine)
31 May 1917Welland, CAdaily rain26.2 mm (1.0 in)0.8 mm (0.03 in)12 years7 of 100 (Routine)
31 May 1917Manfred, AUdaily rain11.4 mm (0.4 in)1.5 mm (0.06 in)4 years5 of 100 (Routine)
31 May 1917Nemours (Ghazaouet), DZdaily low min (Tie)10.0 C (50.0 F)tie16 years2 of 100 (Routine)
31 May 1917Harnosand, SEdaily high min (Tie)10.0 C (50.0 F)tie8 years1 of 100 (Routine)
31 May 1917Stockholm, SEdaily high min (Tie)13.0 C (55.4 F)tie14 years1 of 100 (Routine)
31 May 1917Houston Wb City, USdaily high min (Tie)25.0 C (77.0 F)tie11 years1 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 1917
Records on 05-31 in each year Records set or tied on this calendar date in each year from 1811 to 1917. 1917 had 13 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 1917. 1917 had 13 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 1917-05-31: 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).