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Weather Records on 17 August 1911

18 weather records were set or tied worldwide on 17 August 1911. Highest significance: Anticosti SW Point, CA.

Key Facts for 17 August 1911

  • On 17 August 1911, 18 weather records were set or tied at long-record stations worldwide.
  • 12 were record highs and 2 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 2 monthly and 16 daily.
  • Anticosti SW Point set a daily record precipitation of 53.3 mm (2.1 in) on 17 August 1911.
  • Across 162 earlier years (1797 to 2026) the same calendar date averaged 477 records.

Record Map

18 stations
Weather records on 17 August 1911 18 station records on 17 August 1911 are marked on the map, coloured by record type.
18 station records on 17 August 1911 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 17 August 1911: highest significance records shown on the map
StationCountryTypeValueSignificance
Anticosti SW PointCanadaRecord daily precipitation53.3 mm (2.1 in)40 of 100 (Notable)
ArmaghUnited KingdomRecord high maximum temperature25.1 C (77.2 F)23 of 100 (Routine)
HambantotaSri LankaRecord high maximum temperature36.8 C (98.2 F)21 of 100 (Routine)
GalwayIrelandRecord high maximum temperature28.9 C (84.0 F)19 of 100 (Routine)
ZametchinoRussiaRecord daily precipitation13.6 mm (0.5 in)19 of 100 (Routine)
St. PetersburgRussiaRecord daily precipitation16.6 mm (0.7 in)16 of 100 (Routine)
Atlantic City MarinaUnited StatesRecord high maximum temperature33.3 C (91.9 F)15 of 100 (Routine)
Baltimore Customs HouseUnited StatesRecord high maximum temperature35.6 C (96.1 F)13 of 100 (Routine)
Velikie LukiRussiaRecord low minimum temperature7.1 C (44.8 F)12 of 100 (Routine)
HoburgSwedenRecord daily precipitation3.2 mm (0.13 in)8 of 100 (Routine)
Atlantic City MarinaUnited StatesRecord high minimum temperature23.3 C (73.9 F)8 of 100 (Routine)
Toledo BladeUnited StatesRecord high minimum temperature22.2 C (72.0 F)7 of 100 (Routine)
TorontoCanadaRecord high maximum temperature30.6 C (87.1 F)6 of 100 (Routine)
Anticosti SW PointCanadaRecord low minimum temperature1.1 C (34.0 F)3 of 100 (Routine)
Newark Liberty Intl APUnited StatesRecord high maximum temperature32.2 C (90.0 F)3 of 100 (Routine)
St John'sCanadaRecord high minimum temperature15.6 C (60.1 F)2 of 100 (Routine)
World Trade CtrUnited StatesRecord high maximum temperature31.1 C (88.0 F)2 of 100 (Routine)
Baltimore Customs HouseUnited StatesRecord high minimum temperature24.4 C (75.9 F)1 of 100 (Routine)

Counts by Type and Timescale

18 records
Records on 17 August 1911 by type Records set or tied on 17 August 1911 by type: Highest daily maximum 8, Highest daily minimum 4, Lowest daily minimum 2, Heaviest daily rainfall 4. 02468Highest daily maximum: 8Lowest daily maximum: 0Highest daily minimum: 4Lowest daily minimum: 2Heaviest daily rainfall: 4Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 17 August 1911 by type: Highest daily maximum 8, Highest daily minimum 4, Lowest daily minimum 2, Heaviest daily rainfall 4.
Records on 17 August 1911 by type
Record typeRecords
Highest daily maximum8
Lowest daily maximum0
Highest daily minimum4
Lowest daily minimum2
Heaviest daily rainfall4
Heaviest daily snowfall0
Deepest snow cover0
Records on 17 August 1911 by timescale Records on 17 August 1911 by timescale: all-time 0, monthly 2, daily 16. 05101520all-time: 0monthly: 2daily: 16all-timemonthlydaily
Records on 17 August 1911 by timescale: all-time 0, monthly 2, daily 16.
Records on 17 August 1911 by timescale
TimescaleRecords
all-time0
monthly2
daily16

How Much Records Were Beaten By

12 broken records
Histogram of margins by which records were beaten on 17 August 1911 Margins by which the 12 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 27.9. Ties are not counted. 0358100 to 5: 105 to 10: 110 to 15: 015 to 20: 020 to 25: 025 to 30: 10 to 55 to 1010 to 1515 to 2020 to 2525 to 30
Margins by which the 12 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 27.9. Ties are not counted.
Histogram of margins by which records were beaten on 17 August 1911
MarginRecords
0 to 510
5 to 101
10 to 150
15 to 200
20 to 250
25 to 301

Top 20 by Significance

17 August 1911
Top 18 records on 17 August 1911 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
17 August 1911Anticosti SW Point, CAdaily rain53.3 mm (2.1 in)27.9 mm (1.1 in)33 years40 of 100 (Notable)
17 August 1911Armagh, GBdaily high max25.1 C (77.2 F)0.3 C (0.5 F)55 years23 of 100 (Routine)
17 August 1911Hambantota, LKmonthly high max36.8 C (98.2 F)0.3 C (0.5 F)21 years21 of 100 (Routine)
17 August 1911Galway, IEdaily high max28.9 C (84.0 F)0.6 C (1.1 F)40 years19 of 100 (Routine)
17 August 1911Zametchino, RUdaily rain13.6 mm (0.5 in)6.2 mm (0.24 in)24 years19 of 100 (Routine)
17 August 1911St. Petersburg, RUdaily rain16.6 mm (0.7 in)4.0 mm (0.16 in)29 years16 of 100 (Routine)
17 August 1911Atlantic City Marina, USdaily high max33.3 C (91.9 F)2.7 C (4.9 F)6 years15 of 100 (Routine)
17 August 1911Baltimore Customs House, USdaily high max35.6 C (96.1 F)2.3 C (4.1 F)12 years13 of 100 (Routine)
17 August 1911Velikie Luki, RUdaily low min7.1 C (44.8 F)0.8 C (1.4 F)25 years12 of 100 (Routine)
17 August 1911Hoburg, SEdaily rain3.2 mm (0.13 in)0.5 mm (0.02 in)16 years8 of 100 (Routine)
17 August 1911Atlantic City Marina, USdaily high min23.3 C (73.9 F)0.5 C (0.9 F)15 years8 of 100 (Routine)
17 August 1911Toledo Blade, USdaily high min22.2 C (72.0 F)1.1 C (2.0 F)4 years7 of 100 (Routine)
17 August 1911Toronto, CAdaily high max (Tie)30.6 C (87.1 F)tie57 years6 of 100 (Routine)
17 August 1911Anticosti SW Point, CAmonthly low min (Tie)1.1 C (34.0 F)tie7 years3 of 100 (Routine)
17 August 1911Newark Liberty Intl AP, USdaily high max (Tie)32.2 C (90.0 F)tie28 years3 of 100 (Routine)
17 August 1911St John's, CAdaily high min (Tie)15.6 C (60.1 F)tie18 years2 of 100 (Routine)
17 August 1911World Trade Ctr, USdaily high max (Tie)31.1 C (88.0 F)tie22 years2 of 100 (Routine)
17 August 1911Baltimore Customs House, USdaily high min (Tie)24.4 C (75.9 F)tie9 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

1797 to 1911
Records on 08-17 in each year Records set or tied on this calendar date in each year from 1797 to 1911. 1911 had 18 records. 05001,0001,5002,0001797: 21802: 21820: 21837: 11838: 21841: 21842: 11845: 21853: 11854: 11856: 11857: 11861: 31862: 11867: 11868: 31869: 11872: 11875: 21876: 51879: 11881: 11882: 11883: 21885: 31886: 11888: 51891: 11892: 31893: 21894: 31895: 21896: 31897: 11898: 51899: 81900: 31901: 141902: 71903: 61904: 21905: 111906: 281907: 91908: 261909: 241910: 171911: 181912: 311913: 791914: 411915: 281916: 331917: 351918: 1121919: 371920: 1101921: 371922: 1691923: 1611924: 1711925: 1301926: 1821927: 2281928: 1311929: 2431930: 1381931: 3021932: 3601933: 2601934: 3771935: 4371936: 6701937: 7261938: 4661939: 3641940: 3411941: 3781942: 4611943: 7431944: 5311945: 3871946: 4331947: 6821948: 4751949: 3711950: 5221951: 4131952: 4701953: 3451954: 6851955: 4651956: 4071957: 5041958: 5191959: 5431960: 5331961: 9981962: 4451963: 6501964: 4101965: 6411966: 4961967: 6791968: 9531969: 5931970: 4671971: 4471972: 1,0441973: 7501974: 5821975: 6121976: 7971977: 1,2161978: 8141979: 1,4641980: 8951981: 1,1121982: 5541983: 1,5741984: 7261985: 9481986: 9161987: 1,1501988: 1,6081989: 6871990: 9491991: 5601992: 1,8131993: 8031994: 1,0381995: 1,7241996: 7521997: 1,5441998: 1,0031999: 6972000: 9942001: 1,1012002: 1,2662003: 9482004: 1,0462005: 7222006: 8142007: 1,6462008: 1,3012009: 9222010: 1,1052011: 9562012: 1,2152013: 8022014: 9972015: 8902016: 7482017: 5442018: 5182019: 4672020: 1,5292021: 8002022: 1,4282023: 1,0322024: 7402025: 5382026: 5351797187218981915193219491966198320002017
Records set or tied on this calendar date in each year from 1797 to 1911. 1911 had 18 records.
Counts for years before the ledger starts come from the same station rules.
Records on 08-17 in each year
YearRecords
17972
18022
18202
18371
18382
18412
18421
18452
18531
18541
18561
18571
18613
18621
18671
18683
18691
18721
18752
18765
18791
18811
18821
18832
18853
18861
18885
18911
18923
18932
18943
18952
18963
18971
18985
18998
19003
190114
19027
19036
19042
190511
190628
19079
190826
190924
191017
191118
191231
191379
191441
191528
191633
191735
1918112
191937
1920110
192137
1922169
1923161
1924171
1925130
1926182
1927228
1928131
1929243
1930138
1931302
1932360
1933260
1934377
1935437
1936670
1937726
1938466
1939364
1940341
1941378
1942461
1943743
1944531
1945387
1946433
1947682
1948475
1949371
1950522
1951413
1952470
1953345
1954685
1955465
1956407
1957504
1958519
1959543
1960533
1961998
1962445
1963650
1964410
1965641
1966496
1967679
1968953
1969593
1970467
1971447
19721,044
1973750
1974582
1975612
1976797
19771,216
1978814
19791,464
1980895
19811,112
1982554
19831,574
1984726
1985948
1986916
19871,150
19881,608
1989687
1990949
1991560
19921,813
1993803
19941,038
19951,724
1996752
19971,544
19981,003
1999697
2000994
20011,101
20021,266
2003948
20041,046
2005722
2006814
20071,646
20081,301
2009922
20101,105
2011956
20121,215
2013802
2014997
2015890
2016748
2017544
2018518
2019467
20201,529
2021800
20221,428
20231,032
2024740
2025538
2026535

Download the Data

  • Data for records on 1911-08-17: 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).