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Built 2026-10-19 (19 October 2026)

Weather Records on 20 October 1909

17 weather records were set or tied worldwide on 20 October 1909. Highest significance: Uppsala_Aut, SE.

Key Facts for 20 October 1909

  • On 20 October 1909, 17 weather records were set or tied at long-record stations worldwide.
  • 9 were record highs and 6 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 17 daily.
  • Uppsala_Aut set a daily record high minimum temperature of 9.8 C (49.6 F) on 20 October 1909.
  • Across 160 earlier years (1806 to 2025) the same calendar date averaged 460 records.

Record Map

17 stations
Weather records on 20 October 1909 17 station records on 20 October 1909 are marked on the map, coloured by record type.
17 station records on 20 October 1909 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 20 October 1909: highest significance records shown on the map
StationCountryTypeValueSignificance
Uppsala_AutSwedenRecord high minimum temperature9.8 C (49.6 F)25 of 100 (Routine)
HalifaxCanadaRecord low maximum temperature5.6 C (42.1 F)19 of 100 (Routine)
WashingtonUnited StatesRecord low minimum temperature0.0 C (32.0 F)18 of 100 (Routine)
Atlantic City MarinaUnited StatesRecord low minimum temperature1.7 C (35.1 F)15 of 100 (Routine)
TranebjergDenmarkRecord high minimum temperature10.5 C (50.9 F)13 of 100 (Routine)
Fredericton UnbCanadaRecord low maximum temperature3.3 C (37.9 F)12 of 100 (Routine)
HaparandaSwedenRecord daily precipitation16.9 mm (0.7 in)12 of 100 (Routine)
Atlantic City MarinaUnited StatesRecord low maximum temperature11.1 C (52.0 F)10 of 100 (Routine)
GalwayIrelandRecord daily precipitation12.7 mm (0.5 in)7 of 100 (Routine)
RivaItalyRecord high maximum temperature20.8 C (69.4 F)6 of 100 (Routine)
VestervigDenmarkRecord high minimum temperature10.4 C (50.7 F)5 of 100 (Routine)
Berlin-DahlemGermanyRecord high maximum temperature18.7 C (65.7 F)4 of 100 (Routine)
Baltimore Customs HouseUnited StatesRecord low maximum temperature11.7 C (53.1 F)4 of 100 (Routine)
VestervigDenmarkRecord high maximum temperature14.0 C (57.2 F)3 of 100 (Routine)
Heinersreuth-VollhofGermanyRecord high minimum temperature8.3 C (46.9 F)3 of 100 (Routine)
MilanItalyRecord high maximum temperature22.0 C (71.6 F)3 of 100 (Routine)
SandvigDenmarkRecord high minimum temperature11.8 C (53.2 F)1 of 100 (Routine)

Counts by Type and Timescale

17 records
Records on 20 October 1909 by type Records set or tied on 20 October 1909 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 5, Lowest daily minimum 2, Heaviest daily rainfall 2. 0246Highest daily maximum: 4Lowest daily maximum: 4Highest daily minimum: 5Lowest daily minimum: 2Heaviest daily rainfall: 2Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 20 October 1909 by type: Highest daily maximum 4, Lowest daily maximum 4, Highest daily minimum 5, Lowest daily minimum 2, Heaviest daily rainfall 2.
Records on 20 October 1909 by type
Record typeRecords
Highest daily maximum4
Lowest daily maximum4
Highest daily minimum5
Lowest daily minimum2
Heaviest daily rainfall2
Heaviest daily snowfall0
Deepest snow cover0
Records on 20 October 1909 by timescale Records on 20 October 1909 by timescale: all-time 0, monthly 0, daily 17. 05101520all-time: 0monthly: 0daily: 17all-timemonthlydaily
Records on 20 October 1909 by timescale: all-time 0, monthly 0, daily 17.
Records on 20 October 1909 by timescale
TimescaleRecords
all-time0
monthly0
daily17

How Much Records Were Beaten By

15 broken records
Histogram of margins by which records were beaten on 20 October 1909 Margins by which the 15 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 2.4. Ties are not counted. 02460.0 to 0.5: 60.5 to 1.0: 31.0 to 1.5: 21.5 to 2.0: 22.0 to 2.5: 20.0 to 0.50.5 to 1.01.0 to 1.51.5 to 2.02.0 to 2.5
Margins by which the 15 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 2.4. Ties are not counted.
Histogram of margins by which records were beaten on 20 October 1909
MarginRecords
0.0 to 0.56
0.5 to 1.03
1.0 to 1.52
1.5 to 2.02
2.0 to 2.52

Top 20 by Significance

20 October 1909
Top 17 records on 20 October 1909 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
20 October 1909Uppsala_Aut, SEdaily high min9.8 C (49.6 F)0.3 C (0.5 F)62 years25 of 100 (Routine)
20 October 1909Halifax, CAdaily low max5.6 C (42.1 F)2.2 C (4.0 F)36 years19 of 100 (Routine)
20 October 1909Washington, USdaily low min0.0 C (32.0 F)1.7 C (3.1 F)33 years18 of 100 (Routine)
20 October 1909Atlantic City Marina, USdaily low min1.7 C (35.1 F)1.1 C (2.0 F)33 years15 of 100 (Routine)
20 October 1909Tranebjerg, DKdaily high min10.5 C (50.9 F)0.2 C (0.4 F)34 years13 of 100 (Routine)
20 October 1909Fredericton Unb, CAdaily low max3.3 C (37.9 F)0.6 C (1.1 F)29 years12 of 100 (Routine)
20 October 1909Haparanda, SEdaily rain16.9 mm (0.7 in)2.4 mm (0.09 in)12 years12 of 100 (Routine)
20 October 1909Atlantic City Marina, USdaily low max11.1 C (52.0 F)1.1 C (2.0 F)18 years10 of 100 (Routine)
20 October 1909Galway, IEdaily rain12.7 mm (0.5 in)1.7 mm (0.07 in)6 years7 of 100 (Routine)
20 October 1909Riva, ITdaily high max20.8 C (69.4 F)0.3 C (0.5 F)11 years6 of 100 (Routine)
20 October 1909Vestervig, DKdaily high min10.4 C (50.7 F)0.1 C (0.2 F)8 years5 of 100 (Routine)
20 October 1909Berlin-Dahlem, DEdaily high max18.7 C (65.7 F)0.7 C (1.3 F)2 years4 of 100 (Routine)
20 October 1909Baltimore Customs House, USdaily low max11.7 C (53.1 F)0.5 C (0.9 F)2 years4 of 100 (Routine)
20 October 1909Vestervig, DKdaily high max14.0 C (57.2 F)0.3 C (0.5 F)2 years3 of 100 (Routine)
20 October 1909Heinersreuth-Vollhof, DEdaily high min8.3 C (46.9 F)0.2 C (0.4 F)3 years3 of 100 (Routine)
20 October 1909Milan, ITdaily high max (Tie)22.0 C (71.6 F)tie11 years3 of 100 (Routine)
20 October 1909Sandvig, DKdaily high min (Tie)11.8 C (53.2 F)tie8 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

1806 to 1909
Records on 10-20 in each year Records set or tied on this calendar date in each year from 1806 to 1909. 1909 had 17 records. 01,0002,0003,0001806: 11835: 11844: 11846: 11847: 21851: 11852: 11858: 11863: 21864: 21866: 31867: 11868: 21872: 21874: 21875: 31876: 21877: 11878: 11880: 31881: 21884: 11885: 11886: 11887: 11888: 61891: 41892: 41893: 11894: 31895: 41896: 91897: 21898: 71899: 11900: 81901: 71902: 51903: 91904: 131905: 221906: 281907: 321908: 261909: 171910: 311911: 161912: 61913: 381914: 161915: 201916: 721917: 2011918: 341919: 191920: 811921: 681922: 831923: 961924: 1821925: 2471926: 1471927: 2831928: 921929: 1291930: 6721931: 1251932: 3311933: 6751934: 4221935: 3901936: 3701937: 1891938: 2311939: 3671940: 7571941: 4591942: 1521943: 5011944: 2881945: 3631946: 3101947: 1,4941948: 3201949: 1,0841950: 6191951: 2791952: 5201953: 1,0571954: 2621955: 5291956: 2831957: 4401958: 4611959: 4511960: 6711961: 4791962: 7331963: 7651964: 5981965: 3401966: 8571967: 5111968: 2441969: 6071970: 7101971: 6061972: 1,7241973: 8781974: 1,1221975: 5871976: 1,3041977: 4671978: 5081979: 1,6471980: 3501981: 1,0831982: 1,1911983: 9441984: 1,5621985: 8351986: 8231987: 5901988: 7371989: 2,0921990: 6091991: 9711992: 1,1741993: 1,2381994: 6501995: 7031996: 1,4171997: 9491998: 6831999: 6032000: 7372001: 5892002: 9852003: 1,7612004: 1,8612005: 1,0922006: 1,1702007: 9232008: 4772009: 7862010: 5392011: 7852012: 9452013: 5922014: 8512015: 5232016: 9472017: 6022018: 3942019: 7442020: 1,0102021: 9002022: 8342023: 1,4682024: 7072025: 3261806187718991916193319501967198420012018
Records set or tied on this calendar date in each year from 1806 to 1909. 1909 had 17 records.
Counts for years before the ledger starts come from the same station rules.
Records on 10-20 in each year
YearRecords
18061
18351
18441
18461
18472
18511
18521
18581
18632
18642
18663
18671
18682
18722
18742
18753
18762
18771
18781
18803
18812
18841
18851
18861
18871
18886
18914
18924
18931
18943
18954
18969
18972
18987
18991
19008
19017
19025
19039
190413
190522
190628
190732
190826
190917
191031
191116
19126
191338
191416
191520
191672
1917201
191834
191919
192081
192168
192283
192396
1924182
1925247
1926147
1927283
192892
1929129
1930672
1931125
1932331
1933675
1934422
1935390
1936370
1937189
1938231
1939367
1940757
1941459
1942152
1943501
1944288
1945363
1946310
19471,494
1948320
19491,084
1950619
1951279
1952520
19531,057
1954262
1955529
1956283
1957440
1958461
1959451
1960671
1961479
1962733
1963765
1964598
1965340
1966857
1967511
1968244
1969607
1970710
1971606
19721,724
1973878
19741,122
1975587
19761,304
1977467
1978508
19791,647
1980350
19811,083
19821,191
1983944
19841,562
1985835
1986823
1987590
1988737
19892,092
1990609
1991971
19921,174
19931,238
1994650
1995703
19961,417
1997949
1998683
1999603
2000737
2001589
2002985
20031,761
20041,861
20051,092
20061,170
2007923
2008477
2009786
2010539
2011785
2012945
2013592
2014851
2015523
2016947
2017602
2018394
2019744
20201,010
2021900
2022834
20231,468
2024707
2025326

Download the Data

  • Data for records on 1909-10-20: 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).