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Built 2026-10-19 (19 October 2026)

Weather Records on 17 July 1920

50 weather records were set or tied worldwide on 17 July 1920. Highest significance: Ottawa, CA.

Key Facts for 17 July 1920

  • On 17 July 1920, 50 weather records were set or tied at long-record stations worldwide.
  • 19 were record highs and 18 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 3 monthly and 47 daily.
  • Ottawa set a daily record low minimum temperature of 8.9 C (48.0 F) on 17 July 1920.
  • Across 163 earlier years (1793 to 2026) the same calendar date averaged 447 records.

Record Map

50 stations
Weather records on 17 July 1920 50 station records on 17 July 1920 are marked on the map, coloured by record type.
50 station records on 17 July 1920 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 17 July 1920: highest significance records shown on the map
StationCountryTypeValueSignificance
OttawaCanadaRecord low minimum temperature8.9 C (48.0 F)21 of 100 (Routine)
FerganaUzbekistanRecord daily precipitation3.8 mm (0.15 in)20 of 100 (Routine)
PeterboroughCanadaRecord low minimum temperature6.1 C (43.0 F)20 of 100 (Routine)
MagdeburgGermanyRecord high maximum temperature33.3 C (91.9 F)19 of 100 (Routine)
RoermondNetherlandsRecord daily precipitation25.6 mm (1.0 in)19 of 100 (Routine)
Algiers-Ville/UniversiteAlgeriaRecord high maximum temperature38.0 C (100.4 F)18 of 100 (Routine)
Port ArthurCanadaRecord daily precipitation15.7 mm (0.6 in)18 of 100 (Routine)
Kingston Queens UCanadaRecord low minimum temperature9.4 C (48.9 F)18 of 100 (Routine)
Port StanleyCanadaRecord low maximum temperature18.3 C (64.9 F)18 of 100 (Routine)
Port StanleyCanadaRecord low minimum temperature7.2 C (45.0 F)18 of 100 (Routine)
EdmontonCanadaRecord high maximum temperature33.9 C (93.0 F)17 of 100 (Routine)
SandvigDenmarkRecord daily precipitation16.2 mm (0.6 in)16 of 100 (Routine)
UccleBelgiumRecord daily precipitation20.0 mm (0.8 in)15 of 100 (Routine)
LindsayCanadaRecord low minimum temperature4.4 C (39.9 F)15 of 100 (Routine)
TeterowGermanyRecord daily precipitation15.2 mm (0.6 in)15 of 100 (Routine)
KazanRussiaRecord daily precipitation10.9 mm (0.4 in)15 of 100 (Routine)
Fort NationalAlgeriaRecord high minimum temperature27.0 C (80.6 F)14 of 100 (Routine)
Prince AlbertCanadaRecord high maximum temperature35.0 C (95.0 F)14 of 100 (Routine)
St John'sCanadaRecord high minimum temperature17.2 C (63.0 F)14 of 100 (Routine)
Qu'appelleCanadaRecord high maximum temperature34.4 C (93.9 F)13 of 100 (Routine)
Haliburton ACanadaRecord low maximum temperature20.0 C (68.0 F)13 of 100 (Routine)
CottbusGermanyRecord high maximum temperature33.3 C (91.9 F)13 of 100 (Routine)
Powell CreekAustraliaRecord daily precipitation2.3 mm (0.09 in)12 of 100 (Routine)
TomagoAustraliaRecord daily precipitation8.9 mm (0.35 in)12 of 100 (Routine)
BondiAustraliaRecord daily precipitation12.2 mm (0.5 in)12 of 100 (Routine)
Calgary Int'l ACanadaRecord high minimum temperature13.9 C (57.0 F)12 of 100 (Routine)
Kirchdorf/PoelGermanyRecord high maximum temperature30.1 C (86.2 F)12 of 100 (Routine)
SurgutRussiaRecord daily precipitation12.6 mm (0.5 in)12 of 100 (Routine)
BarrieCanadaRecord low minimum temperature7.2 C (45.0 F)11 of 100 (Routine)
TashkentUzbekistanRecord high minimum temperature24.2 C (75.6 F)11 of 100 (Routine)
Kingston Queens UCanadaRecord low maximum temperature18.9 C (66.0 F)10 of 100 (Routine)
Middletown 4 WUnited StatesRecord low minimum temperature7.2 C (45.0 F)10 of 100 (Routine)
Ottawa CdaCanadaRecord low minimum temperature8.3 C (46.9 F)9 of 100 (Routine)
Haliburton ACanadaRecord low minimum temperature3.3 C (37.9 F)9 of 100 (Routine)
Bremen-SeefahrtschuleGermanyRecord high maximum temperature30.4 C (86.7 F)9 of 100 (Routine)
BarkervilleCanadaRecord high minimum temperature12.8 C (55.0 F)7 of 100 (Routine)
ArnsbergGermanyRecord high maximum temperature31.7 C (89.1 F)7 of 100 (Routine)
Lubeck-WerftGermanyRecord high maximum temperature29.2 C (84.6 F)7 of 100 (Routine)
Fredericton UnbCanadaRecord low minimum temperature3.3 C (37.9 F)6 of 100 (Routine)
WellandCanadaRecord low minimum temperature6.1 C (43.0 F)5 of 100 (Routine)
Indian Head CdaCanadaRecord high maximum temperature35.0 C (95.0 F)4 of 100 (Routine)
Port DoverCanadaRecord low minimum temperature8.3 C (46.9 F)3 of 100 (Routine)
BuffaloUnited StatesRecord low minimum temperature12.2 C (54.0 F)3 of 100 (Routine)
Ravenswood Post OfficeAustraliaRecord daily precipitation0.8 mm (0.03 in)2 of 100 (Routine)
Fort ChipewyanCanadaRecord high minimum temperature19.4 C (66.9 F)2 of 100 (Routine)
Owen SoundCanadaRecord low minimum temperature7.2 C (45.0 F)2 of 100 (Routine)
New WestminsterCanadaRecord high minimum temperature16.7 C (62.1 F)1 of 100 (Routine)
AltonCanadaRecord low maximum temperature18.9 C (66.0 F)1 of 100 (Routine)
TampaUnited StatesRecord daily precipitation31.0 mm (1.2 in)1 of 100 (Routine)
Spokane Intl APUnited StatesRecord high minimum temperature18.9 C (66.0 F)1 of 100 (Routine)

Counts by Type and Timescale

50 records
Records on 17 July 1920 by type Records set or tied on 17 July 1920 by type: Highest daily maximum 11, Lowest daily maximum 4, Highest daily minimum 8, Lowest daily minimum 14, Heaviest daily rainfall 13. 051015Highest daily maximum: 11Lowest daily maximum: 4Highest daily minimum: 8Lowest daily minimum: 14Heaviest daily rainfall: 13Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 17 July 1920 by type: Highest daily maximum 11, Lowest daily maximum 4, Highest daily minimum 8, Lowest daily minimum 14, Heaviest daily rainfall 13.
Records on 17 July 1920 by type
Record typeRecords
Highest daily maximum11
Lowest daily maximum4
Highest daily minimum8
Lowest daily minimum14
Heaviest daily rainfall13
Heaviest daily snowfall0
Deepest snow cover0
Records on 17 July 1920 by timescale Records on 17 July 1920 by timescale: all-time 0, monthly 3, daily 47. 0204060all-time: 0monthly: 3daily: 47all-timemonthlydaily
Records on 17 July 1920 by timescale: all-time 0, monthly 3, daily 47.
Records on 17 July 1920 by timescale
TimescaleRecords
all-time0
monthly3
daily47

How Much Records Were Beaten By

39 broken records
Histogram of margins by which records were beaten on 17 July 1920 Margins by which the 39 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 5.4. Ties are not counted. 051015200 to 1: 81 to 2: 162 to 3: 83 to 4: 44 to 5: 25 to 6: 10 to 11 to 22 to 33 to 44 to 55 to 6
Margins by which the 39 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 5.4. Ties are not counted.
Histogram of margins by which records were beaten on 17 July 1920
MarginRecords
0 to 18
1 to 216
2 to 38
3 to 44
4 to 52
5 to 61

Top 20 by Significance

17 July 1920
Top 20 records on 17 July 1920 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
17 July 1920Ottawa, CAdaily low min8.9 C (48.0 F)1.7 C (3.1 F)40 years21 of 100 (Routine)
17 July 1920Fergana, UZdaily rain3.8 mm (0.15 in)3.8 mm (0.15 in)38 years20 of 100 (Routine)
17 July 1920Peterborough, CAdaily low min6.1 C (43.0 F)0.6 C (1.1 F)48 years20 of 100 (Routine)
17 July 1920Magdeburg, DEdaily high max33.3 C (91.9 F)2.2 C (4.0 F)35 years19 of 100 (Routine)
17 July 1920Roermond, NLdaily rain25.6 mm (1.0 in)4.6 mm (0.18 in)23 years19 of 100 (Routine)
17 July 1920Algiers-Ville/Universite, DZdaily high max38.0 C (100.4 F)2.8 C (5.0 F)24 years18 of 100 (Routine)
17 July 1920Port Arthur, CAdaily rain15.7 mm (0.6 in)2.2 mm (0.09 in)42 years18 of 100 (Routine)
17 July 1920Kingston Queens U, CAdaily low min9.4 C (48.9 F)0.6 C (1.1 F)45 years18 of 100 (Routine)
17 July 1920Port Stanley, CAdaily low max18.3 C (64.9 F)3.4 C (6.1 F)9 years18 of 100 (Routine)
17 July 1920Port Stanley, CAdaily low min7.2 C (45.0 F)0.6 C (1.1 F)45 years18 of 100 (Routine)
17 July 1920Edmonton, CAdaily high max33.9 C (93.0 F)2.8 C (5.0 F)20 years17 of 100 (Routine)
17 July 1920Sandvig, DKdaily rain16.2 mm (0.6 in)1.3 mm (0.05 in)35 years16 of 100 (Routine)
17 July 1920Uccle, BEdaily rain20.0 mm (0.8 in)2.3 mm (0.09 in)29 years15 of 100 (Routine)
17 July 1920Lindsay, CAdaily low min4.4 C (39.9 F)2.3 C (4.1 F)17 years15 of 100 (Routine)
17 July 1920Teterow, DEdaily rain15.2 mm (0.6 in)4.1 mm (0.16 in)17 years15 of 100 (Routine)
17 July 1920Kazan, RUdaily rain10.9 mm (0.4 in)5.4 mm (0.21 in)18 years15 of 100 (Routine)
17 July 1920Fort National, DZdaily high min27.0 C (80.6 F)1.0 C (1.8 F)30 years14 of 100 (Routine)
17 July 1920Prince Albert, CAmonthly high max35.0 C (95.0 F)0.6 C (1.1 F)1 year14 of 100 (Routine)
17 July 1920St John's, CAdaily high min17.2 C (63.0 F)1.1 C (2.0 F)23 years14 of 100 (Routine)
17 July 1920Qu'appelle, CAdaily high max34.4 C (93.9 F)1.1 C (2.0 F)25 years13 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 1920
Records on 07-17 in each year Records set or tied on this calendar date in each year from 1793 to 1920. 1920 had 50 records. 05001,0001,5002,0001793: 11798: 11799: 11801: 21802: 11821: 11827: 11833: 11840: 11842: 11845: 21852: 11862: 11863: 11865: 21866: 11871: 11874: 11875: 21877: 11880: 11881: 21882: 21883: 51884: 11887: 11888: 21889: 41890: 41892: 51893: 31894: 41895: 11896: 31897: 11898: 21899: 41900: 41901: 61902: 61903: 131904: 41905: 91906: 131907: 121908: 321909: 161910: 81911: 521912: 131913: 261914: 671915: 711916: 271917: 621918: 411919: 451920: 501921: 1201922: 2061923: 1051924: 1651925: 2751926: 2511927: 1181928: 1161929: 1541930: 3661931: 4921932: 2931933: 2161934: 4381935: 2451936: 8151937: 3131938: 3031939: 5401940: 3191941: 3861942: 5221943: 3211944: 2361945: 6811946: 5231947: 5051948: 2781949: 4051950: 6451951: 3561952: 7721953: 5571954: 5171955: 5121956: 6081957: 2981958: 6931959: 6311960: 3241961: 4081962: 4211963: 2231964: 4811965: 7531966: 4541967: 9651968: 7071969: 7411970: 4861971: 7901972: 6341973: 6801974: 6911975: 7751976: 1,0411977: 7641978: 7941979: 6421980: 1,1371981: 6281982: 8501983: 1,1201984: 8751985: 4831986: 1,2141987: 1,3881988: 1,2391989: 1,2891990: 9531991: 7631992: 1,0551993: 9561994: 6311995: 9171996: 9111997: 8161998: 1,0311999: 9252000: 1,1662001: 9162002: 9952003: 1,3962004: 9082005: 1,1842006: 1,5092007: 1,2182008: 5082009: 1,2182010: 9652011: 1,1012012: 9342013: 8192014: 1,4562015: 8312016: 6792017: 3982018: 7502019: 4772020: 5152021: 6252022: 7912023: 1,0602024: 8142025: 9662026: 8601793187418971914193119481965198219992016
Records set or tied on this calendar date in each year from 1793 to 1920. 1920 had 50 records.
Counts for years before the ledger starts come from the same station rules.
Records on 07-17 in each year
YearRecords
17931
17981
17991
18012
18021
18211
18271
18331
18401
18421
18452
18521
18621
18631
18652
18661
18711
18741
18752
18771
18801
18812
18822
18835
18841
18871
18882
18894
18904
18925
18933
18944
18951
18963
18971
18982
18994
19004
19016
19026
190313
19044
19059
190613
190712
190832
190916
19108
191152
191213
191326
191467
191571
191627
191762
191841
191945
192050
1921120
1922206
1923105
1924165
1925275
1926251
1927118
1928116
1929154
1930366
1931492
1932293
1933216
1934438
1935245
1936815
1937313
1938303
1939540
1940319
1941386
1942522
1943321
1944236
1945681
1946523
1947505
1948278
1949405
1950645
1951356
1952772
1953557
1954517
1955512
1956608
1957298
1958693
1959631
1960324
1961408
1962421
1963223
1964481
1965753
1966454
1967965
1968707
1969741
1970486
1971790
1972634
1973680
1974691
1975775
19761,041
1977764
1978794
1979642
19801,137
1981628
1982850
19831,120
1984875
1985483
19861,214
19871,388
19881,239
19891,289
1990953
1991763
19921,055
1993956
1994631
1995917
1996911
1997816
19981,031
1999925
20001,166
2001916
2002995
20031,396
2004908
20051,184
20061,509
20071,218
2008508
20091,218
2010965
20111,101
2012934
2013819
20141,456
2015831
2016679
2017398
2018750
2019477
2020515
2021625
2022791
20231,060
2024814
2025966
2026860

Download the Data

  • Data for records on 1920-07-17: 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).