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Built 2026-10-19 (19 October 2026)

Weather Records on 18 May 1917

30 weather records were set or tied worldwide on 18 May 1917. Highest significance: Nemours (Ghazaouet), DZ.

Key Facts for 18 May 1917

  • On 18 May 1917, 30 weather records were set or tied at long-record stations worldwide.
  • 4 were record highs and 5 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 29 daily.
  • Nemours (Ghazaouet) set a daily record precipitation of 29.3 mm (1.2 in) on 18 May 1917.
  • Across 164 earlier years (1796 to 2026) the same calendar date averaged 445 records.

Record Map

30 stations
Weather records on 18 May 1917 30 station records on 18 May 1917 are marked on the map, coloured by record type.
30 station records on 18 May 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 18 May 1917: highest significance records shown on the map
StationCountryTypeValueSignificance
Nemours (Ghazaouet)AlgeriaRecord daily precipitation29.3 mm (1.2 in)29 of 100 (Routine)
Nuwara EliyaSri LankaRecord low minimum temperature2.2 C (36.0 F)24 of 100 (Routine)
DurhamUnited KingdomRecord daily precipitation17.2 mm (0.7 in)20 of 100 (Routine)
Streaky BayAustraliaRecord daily precipitation16.0 mm (0.6 in)20 of 100 (Routine)
KazanRussiaRecord daily precipitation17.2 mm (0.7 in)16 of 100 (Routine)
Mannanarie Post OfficeAustraliaRecord daily precipitation12.7 mm (0.5 in)15 of 100 (Routine)
KadinaAustraliaRecord daily precipitation12.2 mm (0.5 in)15 of 100 (Routine)
BlinmanAustraliaRecord daily precipitation3.6 mm (0.14 in)13 of 100 (Routine)
Hughenden Post OfficeAustraliaRecord daily precipitation3.0 mm (0.12 in)13 of 100 (Routine)
Marseille Obs. Palais-LonchampFranceRecord daily precipitation17.1 mm (0.7 in)13 of 100 (Routine)
NovorossijskRussiaRecord daily precipitation16.0 mm (0.6 in)13 of 100 (Routine)
StansburyAustraliaRecord daily precipitation4.3 mm (0.17 in)12 of 100 (Routine)
OuttrimAustraliaRecord daily precipitation39.9 mm (1.6 in)12 of 100 (Routine)
Tumby Bay (Warratta Vale)AustraliaRecord daily precipitation5.3 mm (0.21 in)11 of 100 (Routine)
Gawler (Loos)AustraliaRecord daily precipitation11.2 mm (0.4 in)11 of 100 (Routine)
HohenpeissenbergGermanyRecord high maximum temperature22.8 C (73.0 F)11 of 100 (Routine)
Sacramento 5 ESEUnited StatesRecord low minimum temperature5.6 C (42.1 F)11 of 100 (Routine)
NorthfieldUnited StatesRecord low minimum temperature-0.6 C (30.9 F)9 of 100 (Routine)
HawkerAustraliaRecord daily precipitation5.6 mm (0.22 in)6 of 100 (Routine)
Merino (Glenorchy Estate)AustraliaRecord daily precipitation17.3 mm (0.7 in)6 of 100 (Routine)
MaitlandAustraliaRecord daily precipitation16.0 mm (0.6 in)5 of 100 (Routine)
Lincoln UNIV Pwr PltUnited StatesRecord high maximum temperature33.3 C (91.9 F)4 of 100 (Routine)
Belton (Shadow Vale)AustraliaRecord daily precipitation2.5 mm (0.10 in)2 of 100 (Routine)
TerowieAustraliaRecord daily precipitation7.4 mm (0.29 in)2 of 100 (Routine)
Corny Point LighthouseAustraliaRecord daily precipitation10.2 mm (0.4 in)1 of 100 (Routine)
Ivanhoe Post OfficeAustraliaRecord daily precipitation7.6 mm (0.30 in)1 of 100 (Routine)
Calgary Int'l ACanadaRecord low minimum temperature-2.2 C (28.0 F)1 of 100 (Routine)
Setauket StrongUnited StatesRecord low minimum temperature6.1 C (43.0 F)1 of 100 (Routine)
Concordia ASOSUnited StatesRecord high maximum temperature33.3 C (91.9 F)1 of 100 (Routine)
Algiers-Ville/UniversiteAlgeriaRecord high minimum temperature18.0 C (64.4 F)0 of 100 (Routine)

Counts by Type and Timescale

30 records
Records on 18 May 1917 by type Records set or tied on 18 May 1917 by type: Highest daily maximum 3, Highest daily minimum 1, Lowest daily minimum 5, Heaviest daily rainfall 21. 0102030Highest daily maximum: 3Lowest daily maximum: 0Highest daily minimum: 1Lowest daily minimum: 5Heaviest daily rainfall: 21Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 18 May 1917 by type: Highest daily maximum 3, Highest daily minimum 1, Lowest daily minimum 5, Heaviest daily rainfall 21.
Records on 18 May 1917 by type
Record typeRecords
Highest daily maximum3
Lowest daily maximum0
Highest daily minimum1
Lowest daily minimum5
Heaviest daily rainfall21
Heaviest daily snowfall0
Deepest snow cover0
Records on 18 May 1917 by timescale Records on 18 May 1917 by timescale: all-time 0, monthly 1, daily 29. 0102030all-time: 0monthly: 1daily: 29all-timemonthlydaily
Records on 18 May 1917 by timescale: all-time 0, monthly 1, daily 29.
Records on 18 May 1917 by timescale
TimescaleRecords
all-time0
monthly1
daily29

How Much Records Were Beaten By

22 broken records
Histogram of margins by which records were beaten on 18 May 1917 Margins by which the 22 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 16.3. Ties are not counted. 0510150 to 3: 133 to 5: 45 to 8: 38 to 10: 010 to 13: 113 to 15: 015 to 18: 10 to 33 to 55 to 88 to 1010 to 1313 to 1515 to 18
Margins by which the 22 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 16.3. Ties are not counted.
Histogram of margins by which records were beaten on 18 May 1917
MarginRecords
0 to 313
3 to 54
5 to 83
8 to 100
10 to 131
13 to 150
15 to 181

Top 20 by Significance

18 May 1917
Top 20 records on 18 May 1917 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
18 May 1917Nemours (Ghazaouet), DZdaily rain29.3 mm (1.2 in)16.3 mm (0.6 in)27 years29 of 100 (Routine)
18 May 1917Nuwara Eliya, LKmonthly low min2.2 C (36.0 F)0.6 C (1.1 F)26 years24 of 100 (Routine)
18 May 1917Durham, GBdaily rain17.2 mm (0.7 in)11.9 mm (0.5 in)7 years20 of 100 (Routine)
18 May 1917Streaky Bay, AUdaily rain16.0 mm (0.6 in)7.4 mm (0.29 in)22 years20 of 100 (Routine)
18 May 1917Kazan, RUdaily rain17.2 mm (0.7 in)5.2 mm (0.20 in)4 years16 of 100 (Routine)
18 May 1917Mannanarie Post Office, AUdaily rain12.7 mm (0.5 in)6.3 mm (0.25 in)3 years15 of 100 (Routine)
18 May 1917Kadina, AUdaily rain12.2 mm (0.5 in)3.8 mm (0.15 in)21 years15 of 100 (Routine)
18 May 1917Blinman, AUdaily rain3.6 mm (0.14 in)1.1 mm (0.04 in)28 years13 of 100 (Routine)
18 May 1917Hughenden Post Office, AUdaily rain3.0 mm (0.12 in)3.0 mm (0.12 in)31 years13 of 100 (Routine)
18 May 1917Marseille Obs. Palais-Lonchamp, FRdaily rain17.1 mm (0.7 in)4.3 mm (0.17 in)18 years13 of 100 (Routine)
18 May 1917Novorossijsk, RUdaily rain16.0 mm (0.6 in)2.2 mm (0.09 in)23 years13 of 100 (Routine)
18 May 1917Stansbury, AUdaily rain4.3 mm (0.17 in)0.5 mm (0.02 in)30 years12 of 100 (Routine)
18 May 1917Outtrim, AUdaily rain39.9 mm (1.6 in)3.3 mm (0.13 in)16 years12 of 100 (Routine)
18 May 1917Tumby Bay (Warratta Vale), AUdaily rain5.3 mm (0.21 in)1.5 mm (0.06 in)17 years11 of 100 (Routine)
18 May 1917Gawler (Loos), AUdaily rain11.2 mm (0.4 in)1.5 mm (0.06 in)16 years11 of 100 (Routine)
18 May 1917Hohenpeissenberg, DEdaily high max22.8 C (73.0 F)0.3 C (0.5 F)28 years11 of 100 (Routine)
18 May 1917Sacramento 5 ESE, USdaily low min5.6 C (42.1 F)0.5 C (0.9 F)20 years11 of 100 (Routine)
18 May 1917Northfield, USdaily low min-0.6 C (30.9 F)1.2 C (2.2 F)15 years9 of 100 (Routine)
18 May 1917Hawker, AUdaily rain5.6 mm (0.22 in)1.5 mm (0.06 in)7 years6 of 100 (Routine)
18 May 1917Merino (Glenorchy Estate), AUdaily rain17.3 mm (0.7 in)1.3 mm (0.05 in)6 years6 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 1917
Records on 05-18 in each year Records set or tied on this calendar date in each year from 1796 to 1917. 1917 had 30 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 1917. 1917 had 30 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 1917-05-18: 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).