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Built 2026-10-19 (19 October 2026)

Weather Records on 17 October 1917

29 weather records were set or tied worldwide on 17 October 1917. Highest significance: Palermo, IT.

Key Facts for 17 October 1917

  • On 17 October 1917, 29 weather records were set or tied at long-record stations worldwide.
  • 3 were record highs and 6 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 29 daily.
  • Palermo set a daily record precipitation of 50.9 mm (2.0 in) on 17 October 1917.
  • Across 162 earlier years (1793 to 2025) the same calendar date averaged 442 records.

Record Map

29 stations
Weather records on 17 October 1917 29 station records on 17 October 1917 are marked on the map, coloured by record type.
29 station records on 17 October 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 17 October 1917: highest significance records shown on the map
StationCountryTypeValueSignificance
PalermoItalyRecord daily precipitation50.9 mm (2.0 in)58 of 100 (Notable)
BolagamyAustraliaRecord daily precipitation41.1 mm (1.6 in)43 of 100 (Notable)
Medicine Hat ACanadaRecord daily snowfall7.4 cm (2.9 in)39 of 100 (Notable)
ChaplinCanadaRecord daily snowfall14.0 cm (5.5 in)22 of 100 (Routine)
Medicine Hat ACanadaRecord daily precipitation17.5 mm (0.7 in)20 of 100 (Routine)
SalekhardRussiaRecord daily precipitation8.7 mm (0.34 in)20 of 100 (Routine)
Forbes (Camp Street)AustraliaRecord high minimum temperature18.0 C (64.4 F)15 of 100 (Routine)
Lake MarmalAustraliaRecord daily precipitation15.0 mm (0.6 in)15 of 100 (Routine)
Anna CreekAustraliaRecord daily precipitation1.5 mm (0.06 in)14 of 100 (Routine)
CarabostAustraliaRecord daily precipitation24.9 mm (1.0 in)14 of 100 (Routine)
Nikolaevsk-Na-AmureRussiaRecord daily precipitation17.7 mm (0.7 in)12 of 100 (Routine)
Marrar (Centenary Drive)AustraliaRecord daily precipitation18.8 mm (0.7 in)11 of 100 (Routine)
Medicine Hat ACanadaRecord low maximum temperature2.2 C (36.0 F)11 of 100 (Routine)
Rapid City ForrestCanadaRecord daily snowfall6.4 cm (2.5 in)11 of 100 (Routine)
Old Noarlunga Post OfficeAustraliaRecord daily precipitation4.1 mm (0.16 in)10 of 100 (Routine)
Canary IslandAustraliaRecord daily precipitation4.3 mm (0.17 in)10 of 100 (Routine)
ChaplinCanadaRecord daily precipitation14.0 mm (0.6 in)9 of 100 (Routine)
New WestminsterCanadaRecord low minimum temperature0.0 C (32.0 F)8 of 100 (Routine)
Rapid City ForrestCanadaRecord daily precipitation6.4 mm (0.25 in)8 of 100 (Routine)
GospicCroatiaRecord daily precipitation81.5 mm (3.2 in)8 of 100 (Routine)
FerraraItalyRecord daily precipitation21.0 mm (0.8 in)8 of 100 (Routine)
Katberg (Bos)South AfricaRecord daily precipitation33.5 mm (1.3 in)7 of 100 (Routine)
Lexington Bluegrass APUnited StatesRecord high maximum temperature27.8 C (82.0 F)7 of 100 (Routine)
Lincoln UNIV Pwr PltUnited StatesRecord high maximum temperature28.3 C (82.9 F)5 of 100 (Routine)
Portland Rfc CityUnited StatesRecord low minimum temperature2.2 C (36.0 F)3 of 100 (Routine)
Algiers-Ville/UniversiteAlgeriaRecord low maximum temperature20.0 C (68.0 F)2 of 100 (Routine)
Guelph OacCanadaRecord low minimum temperature-3.9 C (25.0 F)2 of 100 (Routine)
Oran-Hopital MilitaireAlgeriaRecord low minimum temperature10.0 C (50.0 F)1 of 100 (Routine)
Umzimkulu (Tnk)South AfricaRecord daily precipitation7.6 mm (0.30 in)1 of 100 (Routine)

Counts by Type and Timescale

29 records
Records on 17 October 1917 by type Records set or tied on 17 October 1917 by type: Highest daily maximum 2, Lowest daily maximum 2, Highest daily minimum 1, Lowest daily minimum 4, Heaviest daily rainfall 17, Heaviest daily snowfall 3. 05101520Highest daily maximum: 2Lowest daily maximum: 2Highest daily minimum: 1Lowest daily minimum: 4Heaviest daily rainfall: 17Heaviest daily snowfall: 3Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 17 October 1917 by type: Highest daily maximum 2, Lowest daily maximum 2, Highest daily minimum 1, Lowest daily minimum 4, Heaviest daily rainfall 17, Heaviest daily snowfall 3.
Records on 17 October 1917 by type
Record typeRecords
Highest daily maximum2
Lowest daily maximum2
Highest daily minimum1
Lowest daily minimum4
Heaviest daily rainfall17
Heaviest daily snowfall3
Deepest snow cover0
Records on 17 October 1917 by timescale Records on 17 October 1917 by timescale: all-time 0, monthly 0, daily 29. 0102030all-time: 0monthly: 0daily: 29all-timemonthlydaily
Records on 17 October 1917 by timescale: all-time 0, monthly 0, daily 29.
Records on 17 October 1917 by timescale
TimescaleRecords
all-time0
monthly0
daily29

How Much Records Were Beaten By

24 broken records
Histogram of margins by which records were beaten on 17 October 1917 Margins by which the 24 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted. 051015200 to 10: 1910 to 20: 020 to 30: 130 to 40: 240 to 50: 050 to 60: 060 to 70: 070 to 80: 20 to 1010 to 2020 to 3030 to 4040 to 5050 to 6060 to 7070 to 80
Margins by which the 24 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.
Histogram of margins by which records were beaten on 17 October 1917
MarginRecords
0 to 1019
10 to 200
20 to 301
30 to 402
40 to 500
50 to 600
60 to 700
70 to 802

Top 20 by Significance

17 October 1917
Top 20 records on 17 October 1917 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
17 October 1917Palermo, ITdaily rain50.9 mm (2.0 in)23.6 mm (0.9 in)93 years58 of 100 (Notable)
17 October 1917Bolagamy, AUdaily rain41.1 mm (1.6 in)30.9 mm (1.2 in)3 years43 of 100 (Notable)
17 October 1917Medicine Hat A, CAdaily snowfall7.4 cm (2.9 in)7.4 cm (2.9 in)33 years39 of 100 (Notable)
17 October 1917Chaplin, CAdaily snowfall14.0 cm (5.5 in)7.6 cm (3.0 in)0 years22 of 100 (Routine)
17 October 1917Medicine Hat A, CAdaily rain17.5 mm (0.7 in)5.6 mm (0.22 in)33 years20 of 100 (Routine)
17 October 1917Salekhard, RUdaily rain8.7 mm (0.34 in)1.6 mm (0.06 in)32 years20 of 100 (Routine)
17 October 1917Forbes (Camp Street), AUdaily high min18.0 C (64.4 F)1.3 C (2.3 F)27 years15 of 100 (Routine)
17 October 1917Lake Marmal, AUdaily rain15.0 mm (0.6 in)6.6 mm (0.26 in)8 years15 of 100 (Routine)
17 October 1917Anna Creek, AUdaily rain1.5 mm (0.06 in)1.5 mm (0.06 in)32 years14 of 100 (Routine)
17 October 1917Carabost, AUdaily rain24.9 mm (1.0 in)4.3 mm (0.17 in)24 years14 of 100 (Routine)
17 October 1917Nikolaevsk-Na-Amure, RUdaily rain17.7 mm (0.7 in)8.8 mm (0.35 in)2 years12 of 100 (Routine)
17 October 1917Marrar (Centenary Drive), AUdaily rain18.8 mm (0.7 in)5.6 mm (0.22 in)8 years11 of 100 (Routine)
17 October 1917Medicine Hat A, CAdaily low max2.2 C (36.0 F)1.1 C (2.0 F)24 years11 of 100 (Routine)
17 October 1917Rapid City Forrest, CAdaily snowfall6.4 cm (2.5 in)3.4 cm (1.3 in)8 years11 of 100 (Routine)
17 October 1917Old Noarlunga Post Office, AUdaily rain4.1 mm (0.16 in)1.8 mm (0.07 in)12 years10 of 100 (Routine)
17 October 1917Canary Island, AUdaily rain4.3 mm (0.17 in)1.3 mm (0.05 in)19 years10 of 100 (Routine)
17 October 1917Chaplin, CAdaily rain14.0 mm (0.6 in)2.6 mm (0.10 in)4 years9 of 100 (Routine)
17 October 1917New Westminster, CAdaily low min0.0 C (32.0 F)0.6 C (1.1 F)12 years8 of 100 (Routine)
17 October 1917Rapid City Forrest, CAdaily rain6.4 mm (0.25 in)3.4 mm (0.13 in)8 years8 of 100 (Routine)
17 October 1917Gospic, HRdaily rain81.5 mm (3.2 in)9.2 mm (0.36 in)0 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

1793 to 1917
Records on 10-17 in each year Records set or tied on this calendar date in each year from 1793 to 1917. 1917 had 29 records. 05001,0001,5002,0001793: 11796: 21808: 21810: 11811: 11817: 11820: 11830: 11836: 11844: 11845: 11868: 11869: 21870: 11872: 11874: 11875: 11876: 31877: 11878: 11879: 71881: 11882: 11883: 11884: 21885: 21886: 11889: 11890: 31891: 21892: 61893: 51894: 21895: 11897: 31898: 61899: 31900: 31901: 31902: 41903: 91904: 171905: 121906: 31907: 161908: 461909: 181910: 131911: 241912: 121913: 261914: 721915: 71916: 811917: 291918: 201919: 341920: 821921: 641922: 601923: 1491924: 811925: 3241926: 1531927: 1631928: 5301929: 1191930: 4411931: 4311932: 3451933: 1901934: 2621935: 3371936: 3381937: 8651938: 7101939: 4241940: 5801941: 1941942: 3491943: 1,1731944: 4151945: 2891946: 4371947: 7441948: 7241949: 4421950: 8091951: 2741952: 4741953: 4631954: 5791955: 5621956: 3531957: 2451958: 4151959: 4031960: 4321961: 5251962: 3501963: 5131964: 4921965: 9201966: 5511967: 5761968: 9291969: 7141970: 8151971: 1,0531972: 8661973: 5421974: 1,0551975: 6051976: 1,3811977: 1,0601978: 5831979: 4681980: 1,3661981: 5551982: 5751983: 5261984: 1,5511985: 5851986: 3541987: 8281988: 8271989: 1,1631990: 1,1091991: 1,3521992: 1,3841993: 1,0011994: 1,3061995: 1,0761996: 9871997: 1,1141998: 1,4551999: 8152000: 4612001: 8782002: 9922003: 7642004: 9352005: 6432006: 1,5062007: 6902008: 4672009: 1,6062010: 6252011: 7342012: 5502013: 5162014: 5302015: 8432016: 1,5592017: 7432018: 1,1632019: 5042020: 8892021: 2942022: 9642023: 5442024: 9942025: 3631793187618971914193119481965198219992016
Records set or tied on this calendar date in each year from 1793 to 1917. 1917 had 29 records.
Counts for years before the ledger starts come from the same station rules.
Records on 10-17 in each year
YearRecords
17931
17962
18082
18101
18111
18171
18201
18301
18361
18441
18451
18681
18692
18701
18721
18741
18751
18763
18771
18781
18797
18811
18821
18831
18842
18852
18861
18891
18903
18912
18926
18935
18942
18951
18973
18986
18993
19003
19013
19024
19039
190417
190512
19063
190716
190846
190918
191013
191124
191212
191326
191472
19157
191681
191729
191820
191934
192082
192164
192260
1923149
192481
1925324
1926153
1927163
1928530
1929119
1930441
1931431
1932345
1933190
1934262
1935337
1936338
1937865
1938710
1939424
1940580
1941194
1942349
19431,173
1944415
1945289
1946437
1947744
1948724
1949442
1950809
1951274
1952474
1953463
1954579
1955562
1956353
1957245
1958415
1959403
1960432
1961525
1962350
1963513
1964492
1965920
1966551
1967576
1968929
1969714
1970815
19711,053
1972866
1973542
19741,055
1975605
19761,381
19771,060
1978583
1979468
19801,366
1981555
1982575
1983526
19841,551
1985585
1986354
1987828
1988827
19891,163
19901,109
19911,352
19921,384
19931,001
19941,306
19951,076
1996987
19971,114
19981,455
1999815
2000461
2001878
2002992
2003764
2004935
2005643
20061,506
2007690
2008467
20091,606
2010625
2011734
2012550
2013516
2014530
2015843
20161,559
2017743
20181,163
2019504
2020889
2021294
2022964
2023544
2024994
2025363

Download the Data

  • Data for records on 1917-10-17: 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).