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Built 2026-10-16 (16 October 2026)

Weather Records on 21 December 1855

7 weather records were set or tied worldwide on 21 December 1855. Highest significance: Milan, IT.

Key Facts for 21 December 1855

  • On 21 December 1855, 7 weather records were set or tied at long-record stations worldwide.
  • 0 were record highs and 7 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 0 monthly and 7 daily.
  • Milan set a daily record low maximum temperature of -6.8 C (19.8 F) on 21 December 1855.
  • Across 158 earlier years (1793 to 2025) the same calendar date averaged 492 records.

Record Map

7 stations
Weather records on 21 December 1855 7 station records on 21 December 1855 are marked on the map, coloured by record type.
7 station records on 21 December 1855 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 21 December 1855: highest significance records shown on the map
StationCountryTypeValueSignificance
MilanItalyRecord low maximum temperature-6.8 C (19.8 F)33 of 100 (Routine)
Praha-KlementinumCzech RepublicRecord low maximum temperature-14.4 C (6.1 F)30 of 100 (Routine)
Praha-KlementinumCzech RepublicRecord low minimum temperature-17.9 C (-0.2 F)25 of 100 (Routine)
MilanItalyRecord low minimum temperature-8.0 C (17.6 F)24 of 100 (Routine)
Jena SternwarteGermanyRecord low maximum temperature-14.0 C (6.8 F)19 of 100 (Routine)
Jena SternwarteGermanyRecord low minimum temperature-18.8 C (-1.8 F)18 of 100 (Routine)
BolognaItalyRecord low minimum temperature-10.0 C (14.0 F)18 of 100 (Routine)

Counts by Type and Timescale

7 records
Records on 21 December 1855 by type Records set or tied on 21 December 1855 by type: Lowest daily maximum 3, Lowest daily minimum 4. 01234Highest daily maximum: 0Lowest daily maximum: 3Highest daily minimum: 0Lowest daily minimum: 4Heaviest daily rainfall: 0Heaviest daily snowfall: 0Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 21 December 1855 by type: Lowest daily maximum 3, Lowest daily minimum 4.
Records on 21 December 1855 by type
Record typeRecords
Highest daily maximum0
Lowest daily maximum3
Highest daily minimum0
Lowest daily minimum4
Heaviest daily rainfall0
Heaviest daily snowfall0
Deepest snow cover0
Records on 21 December 1855 by timescale Records on 21 December 1855 by timescale: all-time 0, monthly 0, daily 7. 02468all-time: 0monthly: 0daily: 7all-timemonthlydaily
Records on 21 December 1855 by timescale: all-time 0, monthly 0, daily 7.
Records on 21 December 1855 by timescale
TimescaleRecords
all-time0
monthly0
daily7

How Much Records Were Beaten By

7 broken records
Histogram of margins by which records were beaten on 21 December 1855 Margins by which the 7 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 5.9. Ties are not counted. 011220 to 1: 11 to 2: 12 to 3: 03 to 4: 24 to 5: 15 to 6: 20 to 11 to 22 to 33 to 44 to 55 to 6
Margins by which the 7 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 5.9. Ties are not counted.
Histogram of margins by which records were beaten on 21 December 1855
MarginRecords
0 to 11
1 to 21
2 to 30
3 to 42
4 to 51
5 to 62

Top 20 by Significance

21 December 1855
Top 7 records on 21 December 1855 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
21 December 1855Milan, ITdaily low max-6.8 C (19.8 F)3.3 C (5.9 F)46 years33 of 100 (Routine)
21 December 1855Praha-Klementinum, CZdaily low max-14.4 C (6.1 F)3.8 C (6.8 F)50 years30 of 100 (Routine)
21 December 1855Praha-Klementinum, CZdaily low min-17.9 C (-0.2 F)1.9 C (3.4 F)46 years25 of 100 (Routine)
21 December 1855Milan, ITdaily low min-8.0 C (17.6 F)0.5 C (0.9 F)46 years24 of 100 (Routine)
21 December 1855Jena Sternwarte, DEdaily low max-14.0 C (6.8 F)5.5 C (9.9 F)20 years19 of 100 (Routine)
21 December 1855Jena Sternwarte, DEdaily low min-18.8 C (-1.8 F)5.9 C (10.6 F)20 years18 of 100 (Routine)
21 December 1855Bologna, ITdaily low min-10.0 C (14.0 F)4.0 C (7.2 F)8 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

1793 to 1855
Records on 12-21 in each year Records set or tied on this calendar date in each year from 1793 to 1855. 1855 had 7 records. 01,0002,0003,0004,0001793: 11794: 11799: 11801: 21808: 31825: 11828: 11839: 11846: 11850: 11855: 71859: 11860: 11868: 11870: 11871: 21874: 21875: 31876: 11877: 11878: 11879: 11880: 11884: 11886: 31889: 11890: 41893: 41894: 11895: 51896: 31897: 31898: 11900: 81901: 151902: 51903: 251904: 31905: 151906: 151907: 171908: 191909: 201910: 291911: 361912: 231913: 111914: 1071915: 431916: 401917: 181918: 411919: 571920: 301921: 1041922: 341923: 3231924: 3771925: 1201926: 1781927: 1471928: 701929: 1561930: 661931: 5561932: 1501933: 5811934: 2301935: 3981936: 3231937: 1891938: 1451939: 1401940: 6221941: 6511942: 9681943: 1481944: 7621945: 3961946: 4951947: 7001948: 2971949: 1,2811950: 5041951: 1,0611952: 1971953: 2561954: 4441955: 8881956: 6721957: 8461958: 5161959: 2721960: 5851961: 2541962: 5631963: 1,1371964: 6131965: 2471966: 4001967: 1,9231968: 8181969: 8281970: 5471971: 6801972: 6511973: 1,2921974: 3741975: 5481976: 4461977: 4701978: 5171979: 5581980: 7261981: 1,4761982: 7021983: 3,3241984: 1,0121985: 9791986: 4041987: 7751988: 7171989: 3,2031990: 2,7011991: 1,1251992: 7511993: 9671994: 7931995: 8781996: 1,1141997: 8101998: 1,1421999: 8512000: 9442001: 6502002: 5792003: 1,1032004: 6752005: 6062006: 1,4432007: 9462008: 1,0622009: 1,0972010: 2,0392011: 6532012: 7592013: 1,0292014: 8782015: 1,1732016: 5432017: 4592018: 7382019: 7522020: 9632021: 3232022: 5282023: 1,1662024: 7792025: 1,1001793187418981915193119471963197919952011
Records set or tied on this calendar date in each year from 1793 to 1855. 1855 had 7 records.
Counts for years before the ledger starts come from the same station rules.
Records on 12-21 in each year
YearRecords
17931
17941
17991
18012
18083
18251
18281
18391
18461
18501
18557
18591
18601
18681
18701
18712
18742
18753
18761
18771
18781
18791
18801
18841
18863
18891
18904
18934
18941
18955
18963
18973
18981
19008
190115
19025
190325
19043
190515
190615
190717
190819
190920
191029
191136
191223
191311
1914107
191543
191640
191718
191841
191957
192030
1921104
192234
1923323
1924377
1925120
1926178
1927147
192870
1929156
193066
1931556
1932150
1933581
1934230
1935398
1936323
1937189
1938145
1939140
1940622
1941651
1942968
1943148
1944762
1945396
1946495
1947700
1948297
19491,281
1950504
19511,061
1952197
1953256
1954444
1955888
1956672
1957846
1958516
1959272
1960585
1961254
1962563
19631,137
1964613
1965247
1966400
19671,923
1968818
1969828
1970547
1971680
1972651
19731,292
1974374
1975548
1976446
1977470
1978517
1979558
1980726
19811,476
1982702
19833,324
19841,012
1985979
1986404
1987775
1988717
19893,203
19902,701
19911,125
1992751
1993967
1994793
1995878
19961,114
1997810
19981,142
1999851
2000944
2001650
2002579
20031,103
2004675
2005606
20061,443
2007946
20081,062
20091,097
20102,039
2011653
2012759
20131,029
2014878
20151,173
2016543
2017459
2018738
2019752
2020963
2021323
2022528
20231,166
2024779
20251,100

Download the Data

  • Data for records on 1855-12-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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