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Weather Records on 30 December 1909

13 weather records were set or tied worldwide on 30 December 1909. Highest significance: Milan, IT.

Key Facts for 30 December 1909

  • On 30 December 1909, 13 weather records were set or tied at long-record stations worldwide.
  • 2 were record highs and 6 were record lows, counting maximum and minimum temperature.
  • By timescale, 0 were all-time records, 1 monthly and 12 daily.
  • Milan set a daily record high maximum temperature of 12.3 C (54.1 F) on 30 December 1909.
  • Across 154 earlier years (1799 to 2025) the same calendar date averaged 499 records.

Record Map

13 stations
Weather records on 30 December 1909 13 station records on 30 December 1909 are marked on the map, coloured by record type.
13 station records on 30 December 1909 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.
Weather records on 30 December 1909: highest significance records shown on the map
StationCountryTypeValueSignificance
MilanItalyRecord high maximum temperature12.3 C (54.1 F)38 of 100 (Notable)
TruroCanadaRecord daily snowfall15.2 cm (6.0 in)20 of 100 (Routine)
HalifaxCanadaRecord daily snowfall16.8 cm (6.6 in)19 of 100 (Routine)
SydneyCanadaRecord daily snowfall40.6 cm (16.0 in)19 of 100 (Routine)
Jacksonville Wb CityUnited StatesRecord low maximum temperature3.9 C (39.0 F)12 of 100 (Routine)
ConcordUnited StatesRecord low maximum temperature-12.8 C (9.0 F)11 of 100 (Routine)
Melbourne Regional OfficeAustraliaRecord low maximum temperature17.8 C (64.0 F)10 of 100 (Routine)
RiversdaleSouth AfricaRecord daily precipitation6.4 mm (0.25 in)10 of 100 (Routine)
San Diego WboUnited StatesRecord high minimum temperature15.6 C (60.1 F)7 of 100 (Routine)
Cape Otway LighthouseAustraliaRecord low maximum temperature15.7 C (60.3 F)6 of 100 (Routine)
Portland Rfc CityUnited StatesRecord daily precipitation23.4 mm (0.9 in)2 of 100 (Routine)
Jacksonville Wb CityUnited StatesRecord low minimum temperature-7.2 C (19.0 F)2 of 100 (Routine)
Wilmington Wb CityUnited StatesRecord low maximum temperature-2.2 C (28.0 F)1 of 100 (Routine)

Counts by Type and Timescale

13 records
Records on 30 December 1909 by type Records set or tied on 30 December 1909 by type: Highest daily maximum 1, Lowest daily maximum 5, Highest daily minimum 1, Lowest daily minimum 1, Heaviest daily rainfall 2, Heaviest daily snowfall 3. 0246Highest daily maximum: 1Lowest daily maximum: 5Highest daily minimum: 1Lowest daily minimum: 1Heaviest daily rainfall: 2Heaviest daily snowfall: 3Deepest snow cover: 0Max highMax lowMin highMin lowRainSnowDepth
Records set or tied on 30 December 1909 by type: Highest daily maximum 1, Lowest daily maximum 5, Highest daily minimum 1, Lowest daily minimum 1, Heaviest daily rainfall 2, Heaviest daily snowfall 3.
Records on 30 December 1909 by type
Record typeRecords
Highest daily maximum1
Lowest daily maximum5
Highest daily minimum1
Lowest daily minimum1
Heaviest daily rainfall2
Heaviest daily snowfall3
Deepest snow cover0
Records on 30 December 1909 by timescale Records on 30 December 1909 by timescale: all-time 0, monthly 1, daily 12. 051015all-time: 0monthly: 1daily: 12all-timemonthlydaily
Records on 30 December 1909 by timescale: all-time 0, monthly 1, daily 12.
Records on 30 December 1909 by timescale
TimescaleRecords
all-time0
monthly1
daily12

How Much Records Were Beaten By

10 broken records
Histogram of margins by which records were beaten on 30 December 1909 Margins by which the 10 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 97.0. Ties are not counted. 024680 to 20: 720 to 40: 140 to 60: 060 to 80: 180 to 100: 10 to 2020 to 4040 to 6060 to 8080 to 100
Margins by which the 10 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 97.0. Ties are not counted.
Histogram of margins by which records were beaten on 30 December 1909
MarginRecords
0 to 207
20 to 401
40 to 600
60 to 801
80 to 1001

Top 20 by Significance

30 December 1909
Top 13 records on 30 December 1909 by significance
DateStationRecordValueBeat old record byOld record stoodSignificance
30 December 1909Milan, ITdaily high max12.3 C (54.1 F)2.0 C (3.6 F)73 years38 of 100 (Notable)
30 December 1909Truro, CAdaily snowfall15.2 cm (6.0 in)6.3 cm (2.5 in)18 years20 of 100 (Routine)
30 December 1909Halifax, CAdaily snowfall16.8 cm (6.6 in)9.7 cm (3.8 in)6 years19 of 100 (Routine)
30 December 1909Sydney, CAmonthly snowfall40.6 cm (16.0 in)2.5 cm (1.0 in)5 years19 of 100 (Routine)
30 December 1909Jacksonville Wb City, USdaily low max3.9 C (39.0 F)0.5 C (0.9 F)28 years12 of 100 (Routine)
30 December 1909Concord, USdaily low max-12.8 C (9.0 F)1.1 C (2.0 F)22 years11 of 100 (Routine)
30 December 1909Melbourne Regional Office, AUdaily low max17.8 C (64.0 F)0.1 C (0.2 F)16 years10 of 100 (Routine)
30 December 1909Riversdale, ZAdaily rain6.4 mm (0.25 in)5.4 mm (0.21 in)12 years10 of 100 (Routine)
30 December 1909San Diego Wbo, USdaily high min15.6 C (60.1 F)0.6 C (1.1 F)9 years7 of 100 (Routine)
30 December 1909Cape Otway Lighthouse, AUdaily low max15.7 C (60.3 F)1.0 C (1.8 F)2 years6 of 100 (Routine)
30 December 1909Portland Rfc City, USdaily rain (Tie)23.4 mm (0.9 in)tie28 years2 of 100 (Routine)
30 December 1909Jacksonville Wb City, USdaily low min (Tie)-7.2 C (19.0 F)tie28 years2 of 100 (Routine)
30 December 1909Wilmington Wb City, USdaily low max (Tie)-2.2 C (28.0 F)tie9 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

1799 to 1909
Records on 12-30 in each year Records set or tied on this calendar date in each year from 1799 to 1909. 1909 had 13 records. 01,0002,0003,0004,0001799: 21835: 11850: 11853: 11856: 11859: 11863: 11868: 11870: 41872: 31874: 21875: 21876: 31878: 11880: 51881: 31882: 31884: 21888: 21889: 21890: 71891: 11892: 11893: 31895: 61896: 31897: 71898: 61899: 31900: 51901: 81902: 21903: 81904: 121905: 101906: 111907: 261908: 171909: 131910: 181911: 201912: 371913: 321914: 471915: 621916: 451917: 2171918: 251919: 821920: 841921: 1111922: 2271923: 2231924: 651925: 1841926: 631927: 2901928: 311929: 3821930: 711931: 5091932: 4071933: 2791934: 2061935: 2021936: 9311937: 2341938: 2081939: 2371940: 3971941: 1491942: 5841943: 1651944: 1371945: 2511946: 5841947: 3171948: 7601949: 2061950: 4791951: 9551952: 3341953: 3991954: 5381955: 2541956: 5561957: 4431958: 5251959: 2161960: 3451961: 3891962: 6711963: 5671964: 5371965: 1,1221966: 4031967: 7601968: 1,3911969: 8171970: 5711971: 1,1221972: 1,0521973: 1,2621974: 5641975: 7031976: 9811977: 7951978: 1,9301979: 4271980: 1,5601981: 6841982: 6301983: 2,7651984: 1,8341985: 5681986: 8521987: 1,2701988: 7551989: 5281990: 3,0651991: 5251992: 1,2101993: 8651994: 6421995: 1,4551996: 1,6201997: 1,3841998: 8011999: 8382000: 1,3772001: 6512002: 1,0342003: 6612004: 9742005: 9282006: 1,7792007: 7482008: 6532009: 9332010: 1,2002011: 7822012: 6762013: 6422014: 6602015: 8202016: 7062017: 1,3242018: 2842019: 1,1312020: 6042021: 1,4552022: 9092023: 7262024: 6382025: 3251799188219031919193519511967198319992015
Records set or tied on this calendar date in each year from 1799 to 1909. 1909 had 13 records.
Counts for years before the ledger starts come from the same station rules.
Records on 12-30 in each year
YearRecords
17992
18351
18501
18531
18561
18591
18631
18681
18704
18723
18742
18752
18763
18781
18805
18813
18823
18842
18882
18892
18907
18911
18921
18933
18956
18963
18977
18986
18993
19005
19018
19022
19038
190412
190510
190611
190726
190817
190913
191018
191120
191237
191332
191447
191562
191645
1917217
191825
191982
192084
1921111
1922227
1923223
192465
1925184
192663
1927290
192831
1929382
193071
1931509
1932407
1933279
1934206
1935202
1936931
1937234
1938208
1939237
1940397
1941149
1942584
1943165
1944137
1945251
1946584
1947317
1948760
1949206
1950479
1951955
1952334
1953399
1954538
1955254
1956556
1957443
1958525
1959216
1960345
1961389
1962671
1963567
1964537
19651,122
1966403
1967760
19681,391
1969817
1970571
19711,122
19721,052
19731,262
1974564
1975703
1976981
1977795
19781,930
1979427
19801,560
1981684
1982630
19832,765
19841,834
1985568
1986852
19871,270
1988755
1989528
19903,065
1991525
19921,210
1993865
1994642
19951,455
19961,620
19971,384
1998801
1999838
20001,377
2001651
20021,034
2003661
2004974
2005928
20061,779
2007748
2008653
2009933
20101,200
2011782
2012676
2013642
2014660
2015820
2016706
20171,324
2018284
20191,131
2020604
20211,455
2022909
2023726
2024638
2025325

Download the Data

  • Data for records on 1909-12-30: 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).