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Built 2026-10-19 (19 October 2026)

Weather Records on 18 August 1919

34 weather records were set or tied worldwide on 18 August 1919. Highest significance: Barrie, CA.

Key Facts for 18 August 1919

  • On 18 August 1919, 34 weather records were set or tied at long-record stations worldwide.
  • 11 were record highs and 16 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 34 daily.
  • Barrie set a daily record precipitation of 39.9 mm (1.6 in) on 18 August 1919.
  • Across 171 earlier years (1797 to 2026) the same calendar date averaged 443 records.

Record Map

34 stations
Weather records on 18 August 1919 34 station records on 18 August 1919 are marked on the map, coloured by record type.
34 station records on 18 August 1919 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 18 August 1919: highest significance records shown on the map
StationCountryTypeValueSignificance
BarrieCanadaRecord daily precipitation39.9 mm (1.6 in)32 of 100 (Routine)
BeatriceCanadaRecord daily precipitation55.4 mm (2.2 in)25 of 100 (Routine)
World Trade CtrUnited StatesRecord daily precipitation53.8 mm (2.1 in)23 of 100 (Routine)
TarnabySwedenRecord daily precipitation18.7 mm (0.7 in)20 of 100 (Routine)
World Trade CtrUnited StatesRecord low maximum temperature18.3 C (64.9 F)20 of 100 (Routine)
Ny City Cntrl ParkUnited StatesRecord low maximum temperature18.3 C (64.9 F)19 of 100 (Routine)
Prince AlbertCanadaRecord high maximum temperature33.3 C (91.9 F)17 of 100 (Routine)
BattlefordCanadaRecord high maximum temperature32.8 C (91.0 F)16 of 100 (Routine)
TbilisiGeorgiaRecord low minimum temperature12.6 C (54.7 F)16 of 100 (Routine)
Qu'appelleCanadaRecord high maximum temperature33.9 C (93.0 F)15 of 100 (Routine)
UmeaSwedenRecord low minimum temperature0.5 C (32.9 F)15 of 100 (Routine)
OttawaCanadaRecord low maximum temperature19.4 C (66.9 F)14 of 100 (Routine)
LakefieldCanadaRecord low maximum temperature18.3 C (64.9 F)14 of 100 (Routine)
Calgary Int'l ACanadaRecord high maximum temperature33.3 C (91.9 F)13 of 100 (Routine)
WiartonCanadaRecord daily precipitation34.0 mm (1.3 in)13 of 100 (Routine)
SimferopolUkraineRecord low minimum temperature6.1 C (43.0 F)13 of 100 (Routine)
Harrisburg - CoopUnited StatesRecord daily precipitation28.7 mm (1.1 in)12 of 100 (Routine)
EdmontonCanadaRecord high maximum temperature30.6 C (87.1 F)11 of 100 (Routine)
Medicine Hat ACanadaRecord high maximum temperature35.0 C (95.0 F)11 of 100 (Routine)
RenfrewCanadaRecord low maximum temperature20.0 C (68.0 F)9 of 100 (Routine)
St John'sCanadaRecord low minimum temperature5.6 C (42.1 F)9 of 100 (Routine)
KievUkraineRecord low minimum temperature7.4 C (45.3 F)9 of 100 (Routine)
Setauket StrongUnited StatesRecord low maximum temperature18.9 C (66.0 F)9 of 100 (Routine)
UmanUkraineRecord low minimum temperature5.1 C (41.2 F)8 of 100 (Routine)
Blue Hill CoopUnited StatesRecord low maximum temperature14.4 C (57.9 F)8 of 100 (Routine)
Medicine Hat ACanadaRecord high minimum temperature17.8 C (64.0 F)7 of 100 (Routine)
Newark Liberty Intl APUnited StatesRecord low maximum temperature18.3 C (64.9 F)5 of 100 (Routine)
Ft BidwellUnited StatesRecord high maximum temperature34.4 C (93.9 F)3 of 100 (Routine)
Swift CurrentCanadaRecord high minimum temperature15.0 C (59.0 F)2 of 100 (Routine)
LucknowCanadaRecord daily precipitation10.7 mm (0.4 in)2 of 100 (Routine)
PortlandUnited StatesRecord low maximum temperature15.0 C (59.0 F)2 of 100 (Routine)
Calgary Int'l ACanadaRecord high minimum temperature12.2 C (54.0 F)1 of 100 (Routine)
StorrsUnited StatesRecord low maximum temperature20.0 C (68.0 F)1 of 100 (Routine)
Swift CurrentCanadaRecord high maximum temperature33.3 C (91.9 F)0 of 100 (Routine)

Counts by Type and Timescale

34 records
Records on 18 August 1919 by type Records set or tied on 18 August 1919 by type: Highest daily maximum 8, Lowest daily maximum 10, Highest daily minimum 3, Lowest daily minimum 6, Heaviest daily rainfall 7. 035810Highest daily maximum: 8Lowest daily maximum: 10Highest daily minimum: 3Lowest daily minimum: 6Heaviest daily rainfall: 7Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 18 August 1919 by type: Highest daily maximum 8, Lowest daily maximum 10, Highest daily minimum 3, Lowest daily minimum 6, Heaviest daily rainfall 7.
Records on 18 August 1919 by type
Record typeRecords
Highest daily maximum8
Lowest daily maximum10
Highest daily minimum3
Lowest daily minimum6
Heaviest daily rainfall7
Heaviest daily snowfall0
Deepest snow cover0
Records on 18 August 1919 by timescale Records on 18 August 1919 by timescale: all-time 0, monthly 0, daily 34. 010203040all-time: 0monthly: 0daily: 34all-timemonthlydaily
Records on 18 August 1919 by timescale: all-time 0, monthly 0, daily 34.
Records on 18 August 1919 by timescale
TimescaleRecords
all-time0
monthly0
daily34

How Much Records Were Beaten By

26 broken records
Histogram of margins by which records were beaten on 18 August 1919 Margins by which the 26 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 20.3. Ties are not counted. 01020300 to 5: 215 to 10: 310 to 15: 115 to 20: 020 to 25: 10 to 55 to 1010 to 1515 to 2020 to 25
Margins by which the 26 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 20.3. Ties are not counted.
Histogram of margins by which records were beaten on 18 August 1919
MarginRecords
0 to 521
5 to 103
10 to 151
15 to 200
20 to 251

Top 20 by Significance

18 August 1919
Top 20 records on 18 August 1919 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
18 August 1919Barrie, CAdaily rain39.9 mm (1.6 in)20.3 mm (0.8 in)21 years32 of 100 (Routine)
18 August 1919Beatrice, CAdaily rain55.4 mm (2.2 in)9.7 mm (0.38 in)42 years25 of 100 (Routine)
18 August 1919World Trade Ctr, USdaily rain53.8 mm (2.1 in)13.4 mm (0.5 in)39 years23 of 100 (Routine)
18 August 1919Tarnaby, SEdaily rain18.7 mm (0.7 in)9.5 mm (0.37 in)24 years20 of 100 (Routine)
18 August 1919World Trade Ctr, USdaily low max18.3 C (64.9 F)1.7 C (3.1 F)37 years20 of 100 (Routine)
18 August 1919Ny City Cntrl Park, USdaily low max18.3 C (64.9 F)1.1 C (2.0 F)37 years19 of 100 (Routine)
18 August 1919Prince Albert, CAdaily high max33.3 C (91.9 F)2.2 C (4.0 F)30 years17 of 100 (Routine)
18 August 1919Battleford, CAdaily high max32.8 C (91.0 F)2.8 C (5.0 F)24 years16 of 100 (Routine)
18 August 1919Tbilisi, GEdaily low min12.6 C (54.7 F)0.7 C (1.3 F)35 years16 of 100 (Routine)
18 August 1919Qu'appelle, CAdaily high max33.9 C (93.0 F)2.2 C (4.0 F)24 years15 of 100 (Routine)
18 August 1919Umea, SEdaily low min0.5 C (32.9 F)1.0 C (1.8 F)35 years15 of 100 (Routine)
18 August 1919Ottawa, CAdaily low max19.4 C (66.9 F)0.6 C (1.1 F)32 years14 of 100 (Routine)
18 August 1919Lakefield, CAdaily low max18.3 C (64.9 F)1.7 C (3.1 F)25 years14 of 100 (Routine)
18 August 1919Calgary Int'l A, CAdaily high max33.3 C (91.9 F)2.2 C (4.0 F)21 years13 of 100 (Routine)
18 August 1919Wiarton, CAdaily rain34.0 mm (1.3 in)7.6 mm (0.30 in)16 years13 of 100 (Routine)
18 August 1919Simferopol, UAdaily low min6.1 C (43.0 F)1.7 C (3.1 F)16 years13 of 100 (Routine)
18 August 1919Harrisburg - Coop, USdaily rain28.7 mm (1.1 in)4.6 mm (0.18 in)20 years12 of 100 (Routine)
18 August 1919Edmonton, CAdaily high max30.6 C (87.1 F)0.6 C (1.1 F)21 years11 of 100 (Routine)
18 August 1919Medicine Hat A, CAdaily high max35.0 C (95.0 F)1.1 C (2.0 F)21 years11 of 100 (Routine)
18 August 1919Renfrew, CAdaily low max20.0 C (68.0 F)0.6 C (1.1 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 1919
Records on 08-18 in each year Records set or tied on this calendar date in each year from 1797 to 1919. 1919 had 34 records. 05001,0001,5002,0001797: 21805: 11816: 11827: 11829: 11830: 11833: 11841: 11844: 11845: 31846: 11847: 11849: 11851: 11852: 11853: 11854: 21855: 11856: 11861: 11864: 21866: 11868: 21869: 11870: 21872: 11873: 11875: 31876: 11878: 11879: 21883: 31885: 31886: 31887: 31888: 21889: 11890: 11891: 21892: 61893: 41894: 41895: 11898: 41899: 61900: 21901: 101902: 81903: 61904: 81905: 101906: 401907: 71908: 211909: 241910: 161911: 111912: 211913: 431914: 371915: 601916: 711917: 701918: 531919: 341920: 511921: 391922: 1291923: 901924: 2251925: 3001926: 1681927: 2691928: 1411929: 1811930: 1501931: 2411932: 3821933: 4311934: 6381935: 4241936: 7661937: 3081938: 2431939: 3811940: 4341941: 4671942: 3331943: 7381944: 3251945: 4001946: 4161947: 9581948: 3151949: 3931950: 6831951: 3551952: 4051953: 3231954: 6221955: 7951956: 5801957: 3801958: 5801959: 5371960: 5991961: 4151962: 4281963: 7601964: 4431965: 5251966: 5731967: 6231968: 7951969: 5301970: 5971971: 3811972: 4931973: 7341974: 6391975: 8441976: 9171977: 1,1121978: 8541979: 1,3091980: 7711981: 1,3861982: 5631983: 1,4201984: 6001985: 7651986: 8611987: 1,6091988: 1,3511989: 9521990: 9201991: 5331992: 1,4971993: 7061994: 1,0271995: 1,8821996: 7601997: 1,1911998: 9231999: 8882000: 1,1832001: 1,0362002: 1,3062003: 8602004: 1,0502005: 8652006: 8422007: 1,1162008: 1,2652009: 8392010: 1,1672011: 1,2392012: 1,2472013: 7522014: 7512015: 8802016: 7042017: 5652018: 4622019: 6152020: 1,5412021: 1,1182022: 1,2372023: 1,0942024: 6962025: 4552026: 5451797185618891909192719451963198119992017
Records set or tied on this calendar date in each year from 1797 to 1919. 1919 had 34 records.
Counts for years before the ledger starts come from the same station rules.
Records on 08-18 in each year
YearRecords
17972
18051
18161
18271
18291
18301
18331
18411
18441
18453
18461
18471
18491
18511
18521
18531
18542
18551
18561
18611
18642
18661
18682
18691
18702
18721
18731
18753
18761
18781
18792
18833
18853
18863
18873
18882
18891
18901
18912
18926
18934
18944
18951
18984
18996
19002
190110
19028
19036
19048
190510
190640
19077
190821
190924
191016
191111
191221
191343
191437
191560
191671
191770
191853
191934
192051
192139
1922129
192390
1924225
1925300
1926168
1927269
1928141
1929181
1930150
1931241
1932382
1933431
1934638
1935424
1936766
1937308
1938243
1939381
1940434
1941467
1942333
1943738
1944325
1945400
1946416
1947958
1948315
1949393
1950683
1951355
1952405
1953323
1954622
1955795
1956580
1957380
1958580
1959537
1960599
1961415
1962428
1963760
1964443
1965525
1966573
1967623
1968795
1969530
1970597
1971381
1972493
1973734
1974639
1975844
1976917
19771,112
1978854
19791,309
1980771
19811,386
1982563
19831,420
1984600
1985765
1986861
19871,609
19881,351
1989952
1990920
1991533
19921,497
1993706
19941,027
19951,882
1996760
19971,191
1998923
1999888
20001,183
20011,036
20021,306
2003860
20041,050
2005865
2006842
20071,116
20081,265
2009839
20101,167
20111,239
20121,247
2013752
2014751
2015880
2016704
2017565
2018462
2019615
20201,541
20211,118
20221,237
20231,094
2024696
2025455
2026545

Download the Data

  • Data for records on 1919-08-18: 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).