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Built 2026-10-19 (19 October 2026)

Weather Records on 20 December 1918

18 weather records were set or tied worldwide on 20 December 1918. Highest significance: Sydney (Observatory Hill), AU.

Key Facts for 20 December 1918

  • On 20 December 1918, 18 weather records were set or tied at long-record stations worldwide.
  • 8 were record highs and 1 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 2 monthly and 16 daily.
  • Sydney (Observatory Hill) set a daily record high maximum temperature of 38.3 C (100.9 F) on 20 December 1918.
  • Across 163 earlier years (1793 to 2025) the same calendar date averaged 470 records.

Record Map

18 stations
Weather records on 20 December 1918 18 station records on 20 December 1918 are marked on the map, coloured by record type.
18 station records on 20 December 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 20 December 1918: highest significance records shown on the map
StationCountryTypeValueSignificance
Sydney (Observatory Hill)AustraliaRecord high maximum temperature38.3 C (100.9 F)26 of 100 (Routine)
Montgomery Wb CityUnited StatesRecord daily precipitation107.4 mm (4.2 in)25 of 100 (Routine)
Moose FactoryCanadaRecord high maximum temperature8.3 C (46.9 F)22 of 100 (Routine)
WhittataAustraliaRecord daily precipitation10.9 mm (0.4 in)20 of 100 (Routine)
StockholmSwedenRecord daily precipitation12.6 mm (0.5 in)20 of 100 (Routine)
VastervikSwedenRecord daily precipitation13.1 mm (0.5 in)20 of 100 (Routine)
UmanUkraineRecord daily precipitation8.6 mm (0.34 in)20 of 100 (Routine)
Miltalie (Poodra)AustraliaRecord daily precipitation5.1 mm (0.20 in)20 of 100 (Routine)
Moose FactoryCanadaRecord high minimum temperature-2.2 C (28.0 F)16 of 100 (Routine)
Houston Wb CityUnited StatesRecord high minimum temperature14.4 C (57.9 F)16 of 100 (Routine)
Green BayUnited StatesRecord high minimum temperature3.3 C (37.9 F)15 of 100 (Routine)
Darwin Post OfficeAustraliaRecord high minimum temperature28.9 C (84.0 F)11 of 100 (Routine)
OrebroSwedenRecord daily precipitation10.2 mm (0.4 in)11 of 100 (Routine)
Jacksonville Wb CityUnited StatesRecord high minimum temperature18.3 C (64.9 F)11 of 100 (Routine)
Coen Post OfficeAustraliaRecord daily precipitation31.2 mm (1.2 in)10 of 100 (Routine)
HewittUnited StatesRecord daily precipitation14.5 mm (0.6 in)8 of 100 (Routine)
EscanabaUnited StatesRecord high maximum temperature5.0 C (41.0 F)4 of 100 (Routine)
Cape Otway LighthouseAustraliaRecord low maximum temperature14.4 C (57.9 F)2 of 100 (Routine)

Counts by Type and Timescale

18 records
Records on 20 December 1918 by type Records set or tied on 20 December 1918 by type: Highest daily maximum 3, Lowest daily maximum 1, Highest daily minimum 5, Heaviest daily rainfall 9. 035810Highest daily maximum: 3Lowest daily maximum: 1Highest daily minimum: 5Lowest daily minimum: 0Heaviest daily rainfall: 9Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 20 December 1918 by type: Highest daily maximum 3, Lowest daily maximum 1, Highest daily minimum 5, Heaviest daily rainfall 9.
Records on 20 December 1918 by type
Record typeRecords
Highest daily maximum3
Lowest daily maximum1
Highest daily minimum5
Lowest daily minimum0
Heaviest daily rainfall9
Heaviest daily snowfall0
Deepest snow cover0
Records on 20 December 1918 by timescale Records on 20 December 1918 by timescale: all-time 0, monthly 2, daily 16. 05101520all-time: 0monthly: 2daily: 16all-timemonthlydaily
Records on 20 December 1918 by timescale: all-time 0, monthly 2, daily 16.
Records on 20 December 1918 by timescale
TimescaleRecords
all-time0
monthly2
daily16

How Much Records Were Beaten By

16 broken records
Histogram of margins by which records were beaten on 20 December 1918 Margins by which the 16 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 16.5. Ties are not counted. 02460 to 3: 53 to 5: 65 to 8: 28 to 10: 210 to 13: 013 to 15: 015 to 18: 10 to 33 to 55 to 88 to 1010 to 1313 to 1515 to 18
Margins by which the 16 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 16.5. Ties are not counted.
Histogram of margins by which records were beaten on 20 December 1918
MarginRecords
0 to 35
3 to 56
5 to 82
8 to 102
10 to 130
13 to 150
15 to 181

Top 20 by Significance

20 December 1918
Top 18 records on 20 December 1918 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
20 December 1918Sydney (Observatory Hill), AUdaily high max38.3 C (100.9 F)3.8 C (6.8 F)34 years26 of 100 (Routine)
20 December 1918Montgomery Wb City, USmonthly rain107.4 mm (4.2 in)16.5 mm (0.6 in)2 years25 of 100 (Routine)
20 December 1918Moose Factory, CAmonthly high max8.3 C (46.9 F)1.6 C (2.9 F)22 years22 of 100 (Routine)
20 December 1918Whittata, AUdaily rain10.9 mm (0.4 in)7.9 mm (0.31 in)32 years20 of 100 (Routine)
20 December 1918Stockholm, SEdaily rain12.6 mm (0.5 in)3.8 mm (0.15 in)23 years20 of 100 (Routine)
20 December 1918Vastervik, SEdaily rain13.1 mm (0.5 in)1.7 mm (0.07 in)43 years20 of 100 (Routine)
20 December 1918Uman, UAdaily rain8.6 mm (0.34 in)3.8 mm (0.15 in)30 years20 of 100 (Routine)
20 December 1918Miltalie (Poodra), AUdaily rain5.1 mm (0.20 in)5.1 mm (0.20 in)31 years20 of 100 (Routine)
20 December 1918Moose Factory, CAdaily high min-2.2 C (28.0 F)5.0 C (9.0 F)23 years16 of 100 (Routine)
20 December 1918Houston Wb City, USdaily high min14.4 C (57.9 F)3.3 C (5.9 F)24 years16 of 100 (Routine)
20 December 1918Green Bay, USdaily high min3.3 C (37.9 F)3.3 C (5.9 F)27 years15 of 100 (Routine)
20 December 1918Darwin Post Office, AUdaily high min28.9 C (84.0 F)0.1 C (0.2 F)29 years11 of 100 (Routine)
20 December 1918Orebro, SEdaily rain10.2 mm (0.4 in)2.1 mm (0.08 in)0 years11 of 100 (Routine)
20 December 1918Jacksonville Wb City, USdaily high min18.3 C (64.9 F)1.1 C (2.0 F)19 years11 of 100 (Routine)
20 December 1918Coen Post Office, AUdaily rain31.2 mm (1.2 in)7.6 mm (0.30 in)16 years10 of 100 (Routine)
20 December 1918Hewitt, USdaily rain14.5 mm (0.6 in)3.6 mm (0.14 in)12 years8 of 100 (Routine)
20 December 1918Escanaba, USdaily high max (Tie)5.0 C (41.0 F)tie40 years4 of 100 (Routine)
20 December 1918Cape Otway Lighthouse, AUdaily low max (Tie)14.4 C (57.9 F)tie16 years2 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 1918
Records on 12-20 in each year Records set or tied on this calendar date in each year from 1793 to 1918. 1918 had 18 records. 01,0002,0003,0001793: 11795: 11804: 11805: 21808: 11815: 11828: 11837: 11846: 11855: 81858: 11860: 11866: 11867: 11868: 11869: 11871: 21874: 31875: 11877: 21878: 11879: 11880: 11881: 11882: 11884: 41885: 11886: 41889: 41890: 21891: 21892: 11894: 21895: 81896: 11897: 41898: 21899: 11900: 71901: 81902: 141903: 171904: 91905: 51906: 51907: 111908: 51909: 221910: 171911: 241912: 271913: 71914: 431915: 181916: 451917: 331918: 181919: 251920: 221921: 1011922: 881923: 2151924: 3321925: 961926: 1631927: 2001928: 931929: 2561930: 671931: 5361932: 1701933: 4921934: 2651935: 1521936: 4161937: 1811938: 2401939: 3081940: 9651941: 6331942: 8171943: 1931944: 3401945: 4301946: 3271947: 3851948: 3451949: 1,1411950: 7581951: 9261952: 3941953: 3851954: 4161955: 7261956: 4711957: 1,3541958: 3821959: 1421960: 3541961: 3691962: 4751963: 8751964: 4991965: 3531966: 5551967: 1,3701968: 4821969: 5141970: 5181971: 4411972: 4481973: 1,1841974: 3281975: 6101976: 3821977: 4841978: 9101979: 6001980: 6671981: 1,6811982: 7121983: 2,9951984: 1,4111985: 1,0351986: 3211987: 1,1791988: 7601989: 1,8121990: 1,8851991: 1,1721992: 1,1341993: 1,2661994: 8131995: 1,1281996: 1,4481997: 6511998: 1,1101999: 9382000: 1,1502001: 5232002: 9432003: 1,3152004: 8362005: 5152006: 1,3872007: 9862008: 1,3562009: 1,5022010: 2,0552011: 8462012: 1,1312013: 5842014: 5242015: 1,2382016: 6032017: 6882018: 5922019: 7312020: 5542021: 4422022: 5672023: 1,2422024: 8972025: 1,1661793187418961913193019471964198119982015
Records set or tied on this calendar date in each year from 1793 to 1918. 1918 had 18 records.
Counts for years before the ledger starts come from the same station rules.
Records on 12-20 in each year
YearRecords
17931
17951
18041
18052
18081
18151
18281
18371
18461
18558
18581
18601
18661
18671
18681
18691
18712
18743
18751
18772
18781
18791
18801
18811
18821
18844
18851
18864
18894
18902
18912
18921
18942
18958
18961
18974
18982
18991
19007
19018
190214
190317
19049
19055
19065
190711
19085
190922
191017
191124
191227
19137
191443
191518
191645
191733
191818
191925
192022
1921101
192288
1923215
1924332
192596
1926163
1927200
192893
1929256
193067
1931536
1932170
1933492
1934265
1935152
1936416
1937181
1938240
1939308
1940965
1941633
1942817
1943193
1944340
1945430
1946327
1947385
1948345
19491,141
1950758
1951926
1952394
1953385
1954416
1955726
1956471
19571,354
1958382
1959142
1960354
1961369
1962475
1963875
1964499
1965353
1966555
19671,370
1968482
1969514
1970518
1971441
1972448
19731,184
1974328
1975610
1976382
1977484
1978910
1979600
1980667
19811,681
1982712
19832,995
19841,411
19851,035
1986321
19871,179
1988760
19891,812
19901,885
19911,172
19921,134
19931,266
1994813
19951,128
19961,448
1997651
19981,110
1999938
20001,150
2001523
2002943
20031,315
2004836
2005515
20061,387
2007986
20081,356
20091,502
20102,055
2011846
20121,131
2013584
2014524
20151,238
2016603
2017688
2018592
2019731
2020554
2021442
2022567
20231,242
2024897
20251,166

Download the Data

  • Data for records on 1918-12-20: 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).