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Built 2026-10-14 (14 October 2026)

Weather Records on 21 October 1909

19 weather records were set or tied worldwide on 21 October 1909. Highest significance: Alice Springs Post Office, AU.

Key Facts for 21 October 1909

  • On 21 October 1909, 19 weather records were set or tied at long-record stations worldwide.
  • 10 were record highs and 2 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 18 daily.
  • Alice Springs Post Office set a monthly record daily precipitation of 57.9 mm (2.3 in) on 21 October 1909.
  • Across 167 earlier years (1795 to 2025) the same calendar date averaged 422 records.

Record Map

19 stations
Weather records on 21 October 1909 19 station records on 21 October 1909 are marked on the map, coloured by record type.
19 station records on 21 October 1909 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 21 October 1909: highest significance records shown on the map
StationCountryTypeValueSignificance
Alice Springs Post OfficeAustraliaRecord daily precipitation57.9 mm (2.3 in)62 of 100 (Major)
Uppsala_AutSwedenRecord high minimum temperature11.5 C (52.7 F)26 of 100 (Routine)
Port ArthurCanadaRecord daily precipitation18.3 mm (0.7 in)18 of 100 (Routine)
TranebjergDenmarkRecord high minimum temperature11.3 C (52.3 F)18 of 100 (Routine)
Koebenhavn: Landbohojskolen-1DenmarkRecord high maximum temperature15.7 C (60.3 F)17 of 100 (Routine)
VestervigDenmarkRecord high minimum temperature12.4 C (54.3 F)15 of 100 (Routine)
SouthamptonCanadaRecord daily precipitation17.0 mm (0.7 in)14 of 100 (Routine)
StonecliffeCanadaRecord daily precipitation9.9 mm (0.39 in)11 of 100 (Routine)
Windsor RiversideCanadaRecord daily precipitation11.7 mm (0.5 in)11 of 100 (Routine)
Nordby (Fano)DenmarkRecord high minimum temperature12.9 C (55.2 F)11 of 100 (Routine)
Berlin-DahlemGermanyRecord high maximum temperature20.3 C (68.5 F)11 of 100 (Routine)
SandvigDenmarkRecord high maximum temperature16.1 C (61.0 F)9 of 100 (Routine)
SandvigDenmarkRecord high minimum temperature12.2 C (54.0 F)9 of 100 (Routine)
TranebjergDenmarkRecord high maximum temperature14.9 C (58.8 F)7 of 100 (Routine)
Winnipeg St Johns CollCanadaRecord daily snowfall3.3 cm (1.3 in)6 of 100 (Routine)
VestervigDenmarkRecord high maximum temperature13.9 C (57.0 F)5 of 100 (Routine)
Newark Liberty Intl APUnited StatesRecord low minimum temperature0.0 C (32.0 F)5 of 100 (Routine)
Oran-Hopital MilitaireAlgeriaRecord daily precipitation8.0 mm (0.31 in)1 of 100 (Routine)
Middletown 4 WUnited StatesRecord low minimum temperature-2.2 C (28.0 F)1 of 100 (Routine)

Counts by Type and Timescale

19 records
Records on 21 October 1909 by type Records set or tied on 21 October 1909 by type: Highest daily maximum 5, Highest daily minimum 5, Lowest daily minimum 2, Heaviest daily rainfall 6, Heaviest daily snowfall 1. 0246Highest daily maximum: 5Lowest daily maximum: 0Highest daily minimum: 5Lowest daily minimum: 2Heaviest daily rainfall: 6Heaviest daily snowfall: 1Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 21 October 1909 by type: Highest daily maximum 5, Highest daily minimum 5, Lowest daily minimum 2, Heaviest daily rainfall 6, Heaviest daily snowfall 1.
Records on 21 October 1909 by type
Record typeRecords
Highest daily maximum5
Lowest daily maximum0
Highest daily minimum5
Lowest daily minimum2
Heaviest daily rainfall6
Heaviest daily snowfall1
Deepest snow cover0
Records on 21 October 1909 by timescale Records on 21 October 1909 by timescale: all-time 0, monthly 1, daily 18. 05101520all-time: 0monthly: 1daily: 18all-timemonthlydaily
Records on 21 October 1909 by timescale: all-time 0, monthly 1, daily 18.
Records on 21 October 1909 by timescale
TimescaleRecords
all-time0
monthly1
daily18

How Much Records Were Beaten By

16 broken records
Histogram of margins by which records were beaten on 21 October 1909 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 27.7. Ties are not counted. 0510150 to 5: 135 to 10: 110 to 15: 115 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 16 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 27.7. Ties are not counted.
Histogram of margins by which records were beaten on 21 October 1909
MarginRecords
0 to 513
5 to 101
10 to 151
15 to 200
20 to 250
25 to 301

Top 20 by Significance

21 October 1909
Top 19 records on 21 October 1909 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
21 October 1909Alice Springs Post Office, AUmonthly rain57.9 mm (2.3 in)27.7 mm (1.1 in)32 years62 of 100 (Major)
21 October 1909Uppsala_Aut, SEdaily high min11.5 C (52.7 F)0.5 C (0.9 F)62 years26 of 100 (Routine)
21 October 1909Port Arthur, CAdaily rain18.3 mm (0.7 in)9.4 mm (0.37 in)13 years18 of 100 (Routine)
21 October 1909Tranebjerg, DKdaily high min11.3 C (52.3 F)2.1 C (3.8 F)30 years18 of 100 (Routine)
21 October 1909Koebenhavn: Landbohojskolen-1, DKdaily high max15.7 C (60.3 F)1.9 C (3.4 F)30 years17 of 100 (Routine)
21 October 1909Vestervig, DKdaily high min12.4 C (54.3 F)2.9 C (5.2 F)15 years15 of 100 (Routine)
21 October 1909Southampton, CAdaily rain17.0 mm (0.7 in)3.0 mm (0.12 in)24 years14 of 100 (Routine)
21 October 1909Stonecliffe, CAdaily rain9.9 mm (0.39 in)1.0 mm (0.04 in)24 years11 of 100 (Routine)
21 October 1909Windsor Riverside, CAdaily rain11.7 mm (0.5 in)3.3 mm (0.13 in)11 years11 of 100 (Routine)
21 October 1909Nordby (Fano), DKdaily high min12.9 C (55.2 F)2.2 C (4.0 F)8 years11 of 100 (Routine)
21 October 1909Berlin-Dahlem, DEdaily high max20.3 C (68.5 F)1.4 C (2.5 F)17 years11 of 100 (Routine)
21 October 1909Sandvig, DKdaily high max16.1 C (61.0 F)1.3 C (2.3 F)8 years9 of 100 (Routine)
21 October 1909Sandvig, DKdaily high min12.2 C (54.0 F)1.3 C (2.3 F)8 years9 of 100 (Routine)
21 October 1909Tranebjerg, DKdaily high max14.9 C (58.8 F)0.8 C (1.4 F)8 years7 of 100 (Routine)
21 October 1909Winnipeg St Johns Coll, CAdaily snowfall3.3 cm (1.3 in)1.0 cm (0.4 in)4 years6 of 100 (Routine)
21 October 1909Vestervig, DKdaily high max13.9 C (57.0 F)0.3 C (0.5 F)8 years5 of 100 (Routine)
21 October 1909Newark Liberty Intl AP, USdaily low min (Tie)0.0 C (32.0 F)tie49 years5 of 100 (Routine)
21 October 1909Oran-Hopital Militaire, DZdaily rain (Tie)8.0 mm (0.31 in)tie2 years1 of 100 (Routine)
21 October 1909Middletown 4 W, USdaily low min (Tie)-2.2 C (28.0 F)tie13 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

1795 to 1909
Records on 10-21 in each year Records set or tied on this calendar date in each year from 1795 to 1909. 1909 had 19 records. 01,0002,0003,0001795: 11802: 21805: 11808: 11810: 11834: 11835: 11840: 11845: 11847: 11850: 11851: 21854: 11859: 11863: 11864: 11866: 31867: 11868: 31869: 21871: 11872: 11873: 11874: 11876: 41877: 21878: 11880: 31881: 11883: 11886: 11888: 21889: 21890: 31891: 61892: 61893: 11894: 11895: 21896: 51898: 61899: 31900: 21901: 91902: 21903: 31904: 301905: 151906: 111907: 351908: 351909: 191910: 211911: 101912: 181913: 591914: 351915: 431916: 701917: 2081918: 181919: 1021920: 1491921: 581922: 781923: 811924: 3891925: 1501926: 771927: 1871928: 781929: 2001930: 4921931: 2171932: 1651933: 7331934: 4071935: 7071936: 4071937: 1321938: 1211939: 4911940: 5371941: 6441942: 2581943: 4211944: 3671945: 5381946: 2971947: 9771948: 2661949: 1,0151950: 4381951: 3821952: 8481953: 1,5791954: 2791955: 4811956: 2761957: 5111958: 3221959: 4101960: 4081961: 5531962: 3591963: 7251964: 4571965: 4651966: 4251967: 4721968: 1741969: 8811970: 5481971: 4981972: 8131973: 4641974: 8661975: 5091976: 1,4671977: 4511978: 6161979: 1,9581980: 3781981: 6671982: 8701983: 7861984: 1,8721985: 7761986: 8141987: 8521988: 6961989: 1,6681990: 8071991: 8771992: 1,0951993: 8451994: 6701995: 1,1201996: 1,5811997: 9151998: 7111999: 6882000: 7712001: 6102002: 1,2412003: 2,0662004: 1,6742005: 9492006: 1,0572007: 9162008: 6102009: 7132010: 7102011: 6622012: 7032013: 4402014: 7162015: 4932016: 7342017: 7502018: 4362019: 7552020: 1,1312021: 5722022: 6262023: 8812024: 1,1402025: 3651795186718911909192619431960197719942011
Records set or tied on this calendar date in each year from 1795 to 1909. 1909 had 19 records.
Counts for years before the ledger starts come from the same station rules.
Records on 10-21 in each year
YearRecords
17951
18022
18051
18081
18101
18341
18351
18401
18451
18471
18501
18512
18541
18591
18631
18641
18663
18671
18683
18692
18711
18721
18731
18741
18764
18772
18781
18803
18811
18831
18861
18882
18892
18903
18916
18926
18931
18941
18952
18965
18986
18993
19002
19019
19022
19033
190430
190515
190611
190735
190835
190919
191021
191110
191218
191359
191435
191543
191670
1917208
191818
1919102
1920149
192158
192278
192381
1924389
1925150
192677
1927187
192878
1929200
1930492
1931217
1932165
1933733
1934407
1935707
1936407
1937132
1938121
1939491
1940537
1941644
1942258
1943421
1944367
1945538
1946297
1947977
1948266
19491,015
1950438
1951382
1952848
19531,579
1954279
1955481
1956276
1957511
1958322
1959410
1960408
1961553
1962359
1963725
1964457
1965465
1966425
1967472
1968174
1969881
1970548
1971498
1972813
1973464
1974866
1975509
19761,467
1977451
1978616
19791,958
1980378
1981667
1982870
1983786
19841,872
1985776
1986814
1987852
1988696
19891,668
1990807
1991877
19921,095
1993845
1994670
19951,120
19961,581
1997915
1998711
1999688
2000771
2001610
20021,241
20032,066
20041,674
2005949
20061,057
2007916
2008610
2009713
2010710
2011662
2012703
2013440
2014716
2015493
2016734
2017750
2018436
2019755
20201,131
2021572
2022626
2023881
20241,140
2025365

Download the Data

  • Data for records on 1909-10-21: 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).