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Built 2026-10-19 (19 October 2026)

Weather Records on 17 August 1917

35 weather records were set or tied worldwide on 17 August 1917. Highest significance: Quebec, CA.

Key Facts for 17 August 1917

  • On 17 August 1917, 35 weather records were set or tied at long-record stations worldwide.
  • 18 were record highs and 5 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 35 daily.
  • Quebec set a daily record precipitation of 66.0 mm (2.6 in) on 17 August 1917.
  • Across 162 earlier years (1797 to 2026) the same calendar date averaged 476 records.

Record Map

35 stations
Weather records on 17 August 1917 35 station records on 17 August 1917 are marked on the map, coloured by record type.
35 station records on 17 August 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 17 August 1917: highest significance records shown on the map
StationCountryTypeValueSignificance
QuebecCanadaRecord daily precipitation66.0 mm (2.6 in)45 of 100 (Notable)
BromeCanadaRecord daily precipitation46.0 mm (1.8 in)36 of 100 (Notable)
PortlandUnited StatesRecord daily precipitation61.0 mm (2.4 in)34 of 100 (Routine)
HanoverUnited StatesRecord daily precipitation38.1 mm (1.5 in)21 of 100 (Routine)
Wychitella SouthAustraliaRecord daily precipitation11.2 mm (0.4 in)18 of 100 (Routine)
Bad MuskauGermanyRecord daily precipitation11.9 mm (0.5 in)18 of 100 (Routine)
NicosiaCyprusRecord high maximum temperature42.8 C (109.0 F)17 of 100 (Routine)
HaparandaSwedenRecord high minimum temperature15.5 C (59.9 F)17 of 100 (Routine)
Oestersund-FroesoenSwedenRecord high minimum temperature12.3 C (54.1 F)16 of 100 (Routine)
Anticosti SW PointCanadaRecord high minimum temperature16.7 C (62.1 F)15 of 100 (Routine)
MinnedosaCanadaRecord high maximum temperature33.9 C (93.0 F)14 of 100 (Routine)
PiteaSwedenRecord high minimum temperature15.5 C (59.9 F)14 of 100 (Routine)
KievUkraineRecord daily precipitation12.8 mm (0.5 in)14 of 100 (Routine)
DurhamUnited KingdomRecord daily precipitation14.0 mm (0.6 in)13 of 100 (Routine)
Prince AlbertCanadaRecord high maximum temperature29.4 C (84.9 F)12 of 100 (Routine)
KaresuandoSwedenRecord high minimum temperature13.0 C (55.4 F)12 of 100 (Routine)
UmeaSwedenRecord high minimum temperature15.0 C (59.0 F)10 of 100 (Routine)
Hingham (1)United StatesRecord daily precipitation24.1 mm (0.9 in)10 of 100 (Routine)
Prince AlbertCanadaRecord high minimum temperature13.3 C (55.9 F)9 of 100 (Routine)
BjurakerSwedenRecord high minimum temperature13.5 C (56.3 F)8 of 100 (Routine)
NorthfieldUnited StatesRecord daily precipitation14.2 mm (0.6 in)8 of 100 (Routine)
KisinevMoldovaRecord daily precipitation3.8 mm (0.15 in)7 of 100 (Routine)
Medicine Hat ACanadaRecord high maximum temperature35.0 C (95.0 F)6 of 100 (Routine)
BorasSwedenRecord high minimum temperature13.0 C (55.4 F)6 of 100 (Routine)
StonecliffeCanadaRecord low maximum temperature17.8 C (64.0 F)5 of 100 (Routine)
BarrieCanadaRecord low maximum temperature17.8 C (64.0 F)2 of 100 (Routine)
SvegSwedenRecord high minimum temperature11.5 C (52.7 F)2 of 100 (Routine)
Sacramento 5 ESEUnited StatesRecord low minimum temperature10.6 C (51.1 F)2 of 100 (Routine)
LucknowCanadaRecord low maximum temperature15.6 C (60.1 F)1 of 100 (Routine)
LindsayCanadaRecord low maximum temperature19.4 C (66.9 F)1 of 100 (Routine)
HarnosandSwedenRecord high minimum temperature16.0 C (60.8 F)1 of 100 (Routine)
HalmstadSwedenRecord high minimum temperature15.0 C (59.0 F)1 of 100 (Routine)
OrebroSwedenRecord high minimum temperature15.0 C (59.0 F)1 of 100 (Routine)
JokkmokkSwedenRecord high minimum temperature13.5 C (56.3 F)1 of 100 (Routine)
LuganskUkraineRecord daily precipitation32.5 mm (1.3 in)1 of 100 (Routine)

Counts by Type and Timescale

35 records
Records on 17 August 1917 by type Records set or tied on 17 August 1917 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 14, Lowest daily minimum 1, Heaviest daily rainfall 12. 051015Highest daily maximum: 4Lowest daily maximum: 4Highest daily minimum: 14Lowest daily minimum: 1Heaviest daily rainfall: 12Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 17 August 1917 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 14, Lowest daily minimum 1, Heaviest daily rainfall 12.
Records on 17 August 1917 by type
Record typeRecords
Highest daily maximum4
Lowest daily maximum4
Highest daily minimum14
Lowest daily minimum1
Heaviest daily rainfall12
Heaviest daily snowfall0
Deepest snow cover0
Records on 17 August 1917 by timescale Records on 17 August 1917 by timescale: all-time 0, monthly 0, daily 35. 010203040all-time: 0monthly: 0daily: 35all-timemonthlydaily
Records on 17 August 1917 by timescale: all-time 0, monthly 0, daily 35.
Records on 17 August 1917 by timescale
TimescaleRecords
all-time0
monthly0
daily35

How Much Records Were Beaten By

25 broken records
Histogram of margins by which records were beaten on 17 August 1917 Margins by which the 25 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 38.6. Ties are not counted. 01020300 to 5: 215 to 10: 010 to 15: 015 to 20: 120 to 25: 225 to 30: 030 to 35: 035 to 40: 10 to 55 to 1010 to 1515 to 2020 to 2525 to 3030 to 3535 to 40
Margins by which the 25 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 38.6. Ties are not counted.
Histogram of margins by which records were beaten on 17 August 1917
MarginRecords
0 to 521
5 to 100
10 to 150
15 to 201
20 to 252
25 to 300
30 to 350
35 to 401

Top 20 by Significance

17 August 1917
Top 20 records on 17 August 1917 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
17 August 1917Quebec, CAdaily rain66.0 mm (2.6 in)38.6 mm (1.5 in)8 years45 of 100 (Notable)
17 August 1917Brome, CAdaily rain46.0 mm (1.8 in)24.4 mm (1.0 in)26 years36 of 100 (Notable)
17 August 1917Portland, USdaily rain61.0 mm (2.4 in)20.6 mm (0.8 in)44 years34 of 100 (Routine)
17 August 1917Hanover, USdaily rain38.1 mm (1.5 in)18.5 mm (0.7 in)8 years21 of 100 (Routine)
17 August 1917Wychitella South, AUdaily rain11.2 mm (0.4 in)3.8 mm (0.15 in)29 years18 of 100 (Routine)
17 August 1917Bad Muskau, DEdaily rain11.9 mm (0.5 in)4.7 mm (0.19 in)29 years18 of 100 (Routine)
17 August 1917Nicosia, CYdaily high max42.8 C (109.0 F)2.0 C (3.6 F)20 years17 of 100 (Routine)
17 August 1917Haparanda, SEdaily high min15.5 C (59.9 F)1.5 C (2.7 F)34 years17 of 100 (Routine)
17 August 1917Oestersund-Froesoen, SEdaily high min12.3 C (54.1 F)1.1 C (2.0 F)34 years16 of 100 (Routine)
17 August 1917Anticosti SW Point, CAdaily high min16.7 C (62.1 F)2.3 C (4.1 F)19 years15 of 100 (Routine)
17 August 1917Minnedosa, CAdaily high max33.9 C (93.0 F)3.3 C (5.9 F)16 years14 of 100 (Routine)
17 August 1917Pitea, SEdaily high min15.5 C (59.9 F)0.5 C (0.9 F)34 years14 of 100 (Routine)
17 August 1917Kiev, UAdaily rain12.8 mm (0.5 in)3.6 mm (0.14 in)20 years14 of 100 (Routine)
17 August 1917Durham, GBdaily rain14.0 mm (0.6 in)4.5 mm (0.18 in)8 years13 of 100 (Routine)
17 August 1917Prince Albert, CAdaily high max29.4 C (84.9 F)1.6 C (2.9 F)22 years12 of 100 (Routine)
17 August 1917Karesuando, SEdaily high min13.0 C (55.4 F)2.3 C (4.1 F)11 years12 of 100 (Routine)
17 August 1917Umea, SEdaily high min15.0 C (59.0 F)0.5 C (0.9 F)22 years10 of 100 (Routine)
17 August 1917Hingham (1), USdaily rain24.1 mm (0.9 in)3.3 mm (0.13 in)16 years10 of 100 (Routine)
17 August 1917Prince Albert, CAdaily high min13.3 C (55.9 F)0.5 C (0.9 F)16 years9 of 100 (Routine)
17 August 1917Bjuraker, SEdaily high min13.5 C (56.3 F)0.5 C (0.9 F)16 years8 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 1917
Records on 08-17 in each year Records set or tied on this calendar date in each year from 1797 to 1917. 1917 had 35 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 1917. 1917 had 35 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 1917-08-17: 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).