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Built 2026-10-19 (19 October 2026)

Weather Records on 15 October 1871

4 weather records were set or tied worldwide on 15 October 1871. Highest significance: Bologna, IT.

Key Facts for 15 October 1871

  • On 15 October 1871, 4 weather records were set or tied at long-record stations worldwide.
  • 1 were record highs and 2 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 4 daily.
  • Bologna set a daily record low minimum temperature of 5.7 C (42.3 F) on 15 October 1871.
  • Across 159 earlier years (1794 to 2025) the same calendar date averaged 462 records.

Record Map

4 stations
Weather records on 15 October 1871 4 station records on 15 October 1871 are marked on the map, coloured by record type.
4 station records on 15 October 1871 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 15 October 1871: highest significance records shown on the map
StationCountryTypeValueSignificance
BolognaItalyRecord low minimum temperature5.7 C (42.3 F)18 of 100 (Routine)
Jena SternwarteGermanyRecord low minimum temperature-2.8 C (27.0 F)15 of 100 (Routine)
TorontoCanadaRecord high minimum temperature11.7 C (53.1 F)10 of 100 (Routine)
Adelaide West TerraceAustraliaRecord daily precipitation15.5 mm (0.6 in)8 of 100 (Routine)

Counts by Type and Timescale

4 records
Records on 15 October 1871 by type Records set or tied on 15 October 1871 by type: Highest daily minimum 1, Lowest daily minimum 2, Heaviest daily rainfall 1. 01122Highest daily maximum: 0Lowest daily maximum: 0Highest daily minimum: 1Lowest daily minimum: 2Heaviest daily rainfall: 1Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 15 October 1871 by type: Highest daily minimum 1, Lowest daily minimum 2, Heaviest daily rainfall 1.
Records on 15 October 1871 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum0
Highest daily minimum1
Lowest daily minimum2
Heaviest daily rainfall1
Heaviest daily snowfall0
Deepest snow cover0
Records on 15 October 1871 by timescale Records on 15 October 1871 by timescale: all-time 0, monthly 0, daily 4. 01234all-time: 0monthly: 0daily: 4all-timemonthlydaily
Records on 15 October 1871 by timescale: all-time 0, monthly 0, daily 4.
Records on 15 October 1871 by timescale
TimescaleRecords
all-time0
monthly0
daily4

How Much Records Were Beaten By

4 broken records
Histogram of margins by which records were beaten on 15 October 1871 Margins by which the 4 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 3.4. Ties are not counted. 001110.0 to 0.5: 00.5 to 1.0: 11.0 to 1.5: 11.5 to 2.0: 12.0 to 2.5: 02.5 to 3.0: 03.0 to 3.5: 10.0 to 0.50.5 to 1.01.0 to 1.51.5 to 2.02.0 to 2.52.5 to 3.03.0 to 3.5
Margins by which the 4 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 3.4. Ties are not counted.
Histogram of margins by which records were beaten on 15 October 1871
MarginRecords
0.0 to 0.50
0.5 to 1.01
1.0 to 1.51
1.5 to 2.01
2.0 to 2.50
2.5 to 3.00
3.0 to 3.51

Top 20 by Significance

15 October 1871
Top 4 records on 15 October 1871 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
15 October 1871Bologna, ITdaily low min5.7 C (42.3 F)0.6 C (1.1 F)40 years18 of 100 (Routine)
15 October 1871Jena Sternwarte, DEdaily low min-2.8 C (27.0 F)1.0 C (1.8 F)32 years15 of 100 (Routine)
15 October 1871Toronto, CAdaily high min11.7 C (53.1 F)3.4 C (6.1 F)0 years10 of 100 (Routine)
15 October 1871Adelaide West Terrace, AUdaily rain15.5 mm (0.6 in)1.8 mm (0.07 in)6 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

1794 to 1871
Records on 10-15 in each year Records set or tied on this calendar date in each year from 1794 to 1871. 1871 had 4 records. 01,0002,0003,0001794: 11795: 11796: 11807: 11808: 21836: 11838: 11839: 11849: 11859: 21862: 11870: 21871: 41873: 11875: 11876: 31877: 11878: 31879: 31881: 31882: 41885: 21886: 11887: 81889: 21891: 41892: 11893: 51894: 91895: 31896: 81897: 21898: 31899: 41900: 31901: 41902: 71903: 131904: 101905: 131906: 71907: 111908: 131909: 171910: 141911: 181912: 171913: 701914: 281915: 481916: 211917: 291918: 211919: 651920: 381921: 1601922: 431923: 661924: 1181925: 2211926: 1251927: 941928: 3851929: 2001930: 2821931: 4611932: 2131933: 2551934: 4341935: 3031936: 1261937: 1,4441938: 5981939: 4611940: 4581941: 3301942: 4941943: 7041944: 2461945: 4871946: 3541947: 9631948: 2241949: 5461950: 3211951: 3411952: 6621953: 3741954: 9451955: 4441956: 5551957: 4611958: 6061959: 4111960: 6001961: 8341962: 1,0091963: 5221964: 4881965: 2991966: 1,2651967: 4641968: 1,1111969: 1,0741970: 6421971: 7441972: 5841973: 5251974: 7681975: 8081976: 7911977: 5431978: 8861979: 7201980: 1,0061981: 9651982: 2971983: 6531984: 1,2361985: 1,0681986: 7681987: 9001988: 8961989: 5601990: 1,1341991: 1,1391992: 1,5301993: 1,0661994: 1,1031995: 1,0081996: 4581997: 9641998: 8061999: 7662000: 6252001: 7052002: 9652003: 7372004: 7162005: 6102006: 1,3052007: 7022008: 9592009: 2,3652010: 1,0952011: 9062012: 9092013: 6312014: 9012015: 1,1392016: 6742017: 1,0902018: 2,6572019: 4742020: 4962021: 9752022: 6342023: 3182024: 7482025: 6971794187718981914193019461962197819942010
Records set or tied on this calendar date in each year from 1794 to 1871. 1871 had 4 records.
Counts for years before the ledger starts come from the same station rules.
Records on 10-15 in each year
YearRecords
17941
17951
17961
18071
18082
18361
18381
18391
18491
18592
18621
18702
18714
18731
18751
18763
18771
18783
18793
18813
18824
18852
18861
18878
18892
18914
18921
18935
18949
18953
18968
18972
18983
18994
19003
19014
19027
190313
190410
190513
19067
190711
190813
190917
191014
191118
191217
191370
191428
191548
191621
191729
191821
191965
192038
1921160
192243
192366
1924118
1925221
1926125
192794
1928385
1929200
1930282
1931461
1932213
1933255
1934434
1935303
1936126
19371,444
1938598
1939461
1940458
1941330
1942494
1943704
1944246
1945487
1946354
1947963
1948224
1949546
1950321
1951341
1952662
1953374
1954945
1955444
1956555
1957461
1958606
1959411
1960600
1961834
19621,009
1963522
1964488
1965299
19661,265
1967464
19681,111
19691,074
1970642
1971744
1972584
1973525
1974768
1975808
1976791
1977543
1978886
1979720
19801,006
1981965
1982297
1983653
19841,236
19851,068
1986768
1987900
1988896
1989560
19901,134
19911,139
19921,530
19931,066
19941,103
19951,008
1996458
1997964
1998806
1999766
2000625
2001705
2002965
2003737
2004716
2005610
20061,305
2007702
2008959
20092,365
20101,095
2011906
2012909
2013631
2014901
20151,139
2016674
20171,090
20182,657
2019474
2020496
2021975
2022634
2023318
2024748
2025697

Download the Data

  • Data for records on 1871-10-15: 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 (2025-12-31).