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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Weather Records on 27 September 1855

2 weather records were set or tied worldwide on 27 September 1855. Highest significance: Bologna, IT.

Key Facts for 27 September 1855

  • On 27 September 1855, 2 weather records were set or tied at long-record stations worldwide.
  • 0 were record highs and 2 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 1 daily.
  • Bologna set a monthly record low minimum temperature of 6.6 C (43.9 F) on 27 September 1855.
  • Across 153 earlier years (1799 to 2025) the same calendar date averaged 454 records.

Record Map

2 stations
Weather records on 27 September 1855 2 station records on 27 September 1855 are marked on the map, coloured by record type.
2 station records on 27 September 1855 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 27 September 1855: highest significance records shown on the map
StationCountryTypeValueSignificance
BolognaItalyRecord low minimum temperature6.6 C (43.9 F)19 of 100 (Routine)
Jena SternwarteGermanyRecord low minimum temperature0.0 C (32.0 F)18 of 100 (Routine)

Counts by Type and Timescale

2 records
Records on 27 September 1855 by type Records set or tied on 27 September 1855 by type: Lowest daily minimum 2. 01122Highest daily maximum: 0Lowest daily maximum: 0Highest daily minimum: 0Lowest daily minimum: 2Heaviest daily rainfall: 0Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 27 September 1855 by type: Lowest daily minimum 2.
Records on 27 September 1855 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum0
Highest daily minimum0
Lowest daily minimum2
Heaviest daily rainfall0
Heaviest daily snowfall0
Deepest snow cover0
Records on 27 September 1855 by timescale Records on 27 September 1855 by timescale: all-time 0, monthly 1, daily 1. 00111all-time: 0monthly: 1daily: 1all-timemonthlydaily
Records on 27 September 1855 by timescale: all-time 0, monthly 1, daily 1.
Records on 27 September 1855 by timescale
TimescaleRecords
all-time0
monthly1
daily1

How Much Records Were Beaten By

2 broken records
Histogram of margins by which records were beaten on 27 September 1855 Margins by which the 2 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: 01.5 to 2.0: 02.0 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 2 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 27 September 1855
MarginRecords
0.0 to 0.50
0.5 to 1.01
1.0 to 1.50
1.5 to 2.00
2.0 to 2.50
2.5 to 3.00
3.0 to 3.51

Top 20 by Significance

27 September 1855
Top 2 records on 27 September 1855 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
27 September 1855Bologna, ITmonthly low min6.6 C (43.9 F)0.9 C (1.6 F)11 years19 of 100 (Routine)
27 September 1855Jena Sternwarte, DEdaily low min0.0 C (32.0 F)3.4 C (6.1 F)17 years18 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

1799 to 1855
Records on 09-27 in each year Records set or tied on this calendar date in each year from 1799 to 1855. 1855 had 2 records. 05001,0001,5002,0001799: 11828: 11836: 21847: 11851: 11854: 21855: 21859: 21866: 21867: 31874: 11875: 11877: 21880: 11881: 41882: 11885: 51887: 11890: 31891: 11892: 11893: 11894: 51895: 61896: 11897: 21898: 41899: 11900: 51901: 31902: 121903: 71904: 121905: 211906: 211907: 91908: 361909: 171910: 201911: 311912: 251913: 271914: 241915: 801916: 571917: 411918: 581919: 451920: 541921: 261922: 1111923: 1251924: 1151925: 1291926: 5811927: 2441928: 2881929: 2251930: 1781931: 2221932: 1941933: 5591934: 2981935: 3191936: 4351937: 3091938: 3661939: 5721940: 7061941: 2571942: 1,3531943: 5031944: 3231945: 4751946: 3871947: 8131948: 4051949: 4071950: 2231951: 4801952: 5391953: 5671954: 5071955: 3861956: 8251957: 6441958: 5851959: 5821960: 3371961: 3761962: 3521963: 8491964: 7241965: 6881966: 4261967: 5021968: 2861969: 2331970: 7731971: 7621972: 9891973: 1,0311974: 4081975: 7901976: 9051977: 8521978: 7731979: 7411980: 5591981: 6801982: 1,0761983: 7911984: 1,2971985: 6611986: 1,7721987: 1,0131988: 4941989: 8521990: 3791991: 8941992: 6591993: 7271994: 7641995: 6981996: 1,4681997: 7301998: 1,7741999: 1,0592000: 1,0312001: 9802002: 9922003: 8302004: 6652005: 1,0612006: 5962007: 1,0912008: 6592009: 9872010: 1,1532011: 9652012: 6252013: 8232014: 8132015: 6642016: 6002017: 8912018: 5932019: 7452020: 6562021: 8902022: 6382023: 7452024: 1,4502025: 2741799188519041920193619521968198420002016
Records set or tied on this calendar date in each year from 1799 to 1855. 1855 had 2 records.
Counts for years before the ledger starts come from the same station rules.
Records on 09-27 in each year
YearRecords
17991
18281
18362
18471
18511
18542
18552
18592
18662
18673
18741
18751
18772
18801
18814
18821
18855
18871
18903
18911
18921
18931
18945
18956
18961
18972
18984
18991
19005
19013
190212
19037
190412
190521
190621
19079
190836
190917
191020
191131
191225
191327
191424
191580
191657
191741
191858
191945
192054
192126
1922111
1923125
1924115
1925129
1926581
1927244
1928288
1929225
1930178
1931222
1932194
1933559
1934298
1935319
1936435
1937309
1938366
1939572
1940706
1941257
19421,353
1943503
1944323
1945475
1946387
1947813
1948405
1949407
1950223
1951480
1952539
1953567
1954507
1955386
1956825
1957644
1958585
1959582
1960337
1961376
1962352
1963849
1964724
1965688
1966426
1967502
1968286
1969233
1970773
1971762
1972989
19731,031
1974408
1975790
1976905
1977852
1978773
1979741
1980559
1981680
19821,076
1983791
19841,297
1985661
19861,772
19871,013
1988494
1989852
1990379
1991894
1992659
1993727
1994764
1995698
19961,468
1997730
19981,774
19991,059
20001,031
2001980
2002992
2003830
2004665
20051,061
2006596
20071,091
2008659
2009987
20101,153
2011965
2012625
2013823
2014813
2015664
2016600
2017891
2018593
2019745
2020656
2021890
2022638
2023745
20241,450
2025274

Download the Data

  • Data for records on 1855-09-27: 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 2026-10-18 (18 October 2026). Records are computed by this site and are not official.

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