Weather Records on 21 December 1929

156 weather records were set or tied worldwide on 21 December 1929. Highest significance: Pesaro, IT.

Key Facts for 21 December 1929

On 21 December 1929, 156 weather records were set or tied at long-record stations worldwide.
17 were record highs and 86 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 5 monthly and 144 daily.
Pesaro set a daily record precipitation of 56.0 mm (2.2 in) on 21 December 1929.
Across 158 earlier years (1793 to 2025) the same calendar date averaged 491 records.

Record Map

156 stations

156 station records on 21 December 1929 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 December 1929: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pesaro	Italy	Record daily precipitation	56.0 mm (2.2 in)	53 of 100 (Notable)
Hallettsville 2 N	United States	Record daily snowfall	7.6 cm (3.0 in)	37 of 100 (Notable)
Blanco	United States	Record daily snowfall	17.8 cm (7.0 in)	36 of 100 (Notable)
Hewitt	United States	Record snow depth	25.4 cm (10.0 in)	36 of 100 (Notable)
Hobart Botanical Gardens	Australia	Record daily precipitation	58.9 mm (2.3 in)	35 of 100 (Notable)
New Braunfels	United States	Record snow depth	12.7 cm (5.0 in)	35 of 100 (Notable)
Rokeby (the Mall)	Australia	Record daily precipitation	39.9 mm (1.6 in)	33 of 100 (Routine)
New Braunfels	United States	Record daily snowfall	11.7 cm (4.6 in)	33 of 100 (Routine)
Beatrice	Canada	Record daily snowfall	27.9 cm (11.0 in)	32 of 100 (Routine)
Llano	United States	Record daily snowfall	17.8 cm (7.0 in)	31 of 100 (Routine)
Cape Bruny Lighthouse	Australia	Record daily precipitation	25.1 mm (1.0 in)	30 of 100 (Routine)
Coleman	United States	Record daily snowfall	7.6 cm (3.0 in)	28 of 100 (Routine)
Hobart (Ellerslie Road)	Australia	Record daily precipitation	71.6 mm (2.8 in)	27 of 100 (Routine)
Bagdad	Australia	Record daily precipitation	28.4 mm (1.1 in)	26 of 100 (Routine)
St Helens Post Office	Australia	Record daily precipitation	31.8 mm (1.3 in)	24 of 100 (Routine)
Sandford (Maydena)	Australia	Record daily precipitation	35.8 mm (1.4 in)	24 of 100 (Routine)
Boerne	United States	Record daily snowfall	16.5 cm (6.5 in)	24 of 100 (Routine)
Ft Stanton	United States	Record low maximum temperature	-6.1 C (21.0 F)	22 of 100 (Routine)
Port Arthur	Australia	Record daily precipitation	30.5 mm (1.2 in)	21 of 100 (Routine)
Mahackala	Russia	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
New Norfolk	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Marseille Obs. Palais-Lonchamp	France	Record daily precipitation	21.2 mm (0.8 in)	20 of 100 (Routine)
Hobart (Ellerslie Road)	Australia	Record low maximum temperature	12.2 C (54.0 F)	20 of 100 (Routine)
Baton Rouge	United States	Record low maximum temperature	1.1 C (34.0 F)	20 of 100 (Routine)
Coldwater St School	United States	Record snow depth	22.9 cm (9.0 in)	19 of 100 (Routine)
Cairns Post Office	Australia	Record high maximum temperature	36.7 C (98.1 F)	18 of 100 (Routine)
Beatrice	Canada	Record daily precipitation	27.9 mm (1.1 in)	18 of 100 (Routine)
Moose Jaw Chab	Canada	Record daily precipitation	0.3 mm (0.01 in)	17 of 100 (Routine)
Moose Jaw Chab	Canada	Record daily snowfall	0.3 cm (0.1 in)	17 of 100 (Routine)
Andenes	Norway	Record high minimum temperature	4.9 C (40.8 F)	17 of 100 (Routine)
Cowles	United States	Record low minimum temperature	-22.8 C (-9.0 F)	17 of 100 (Routine)
Buffalo	United States	Record daily snowfall	15.2 cm (6.0 in)	17 of 100 (Routine)
New Orleans Audubon	United States	Record low maximum temperature	3.3 C (37.9 F)	17 of 100 (Routine)
Toledo Blade	United States	Record snow depth	22.9 cm (9.0 in)	16 of 100 (Routine)
Boerne	United States	Record daily precipitation	16.5 mm (0.6 in)	16 of 100 (Routine)
Haskell	United States	Record daily snowfall	2.5 cm (1.0 in)	16 of 100 (Routine)
El Paso	United States	Record low minimum temperature	-8.3 C (17.1 F)	16 of 100 (Routine)
Bizerte Cap Blanc	Tunisia	Record low minimum temperature	3.0 C (37.4 F)	15 of 100 (Routine)
Healdsburg	United States	Record high maximum temperature	21.1 C (70.0 F)	15 of 100 (Routine)
Llano	United States	Record daily precipitation	17.8 mm (0.7 in)	15 of 100 (Routine)
Yarra Junction (Gilderoy)	Australia	Record daily precipitation	19.1 mm (0.8 in)	14 of 100 (Routine)
Bella Coola	Canada	Record daily snowfall	12.7 cm (5.0 in)	14 of 100 (Routine)
Prescott 2 NNW	United States	Record low maximum temperature	-2.8 C (27.0 F)	14 of 100 (Routine)
Stockton 2	United States	Record high maximum temperature	16.7 C (62.1 F)	14 of 100 (Routine)
Kissimmee	United States	Record low maximum temperature	10.0 C (50.0 F)	14 of 100 (Routine)
Farmersburg	United States	Record low minimum temperature	-16.7 C (1.9 F)	14 of 100 (Routine)
Murfreesboro 5 N	United States	Record low minimum temperature	-15.0 C (5.0 F)	14 of 100 (Routine)
New Braunfels	United States	Record low maximum temperature	0.6 C (33.1 F)	14 of 100 (Routine)
Maroondah Weir (Melbourne Wate	Australia	Record daily precipitation	15.2 mm (0.6 in)	13 of 100 (Routine)
Parnu	Estonia	Record high minimum temperature	2.6 C (36.7 F)	13 of 100 (Routine)
Kargopol	Russia	Record high minimum temperature	-2.3 C (27.9 F)	13 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record low minimum temperature	-11.9 C (10.6 F)	13 of 100 (Routine)
Los Gatos	United States	Record high minimum temperature	8.9 C (48.0 F)	13 of 100 (Routine)
Oakland	United States	Record high minimum temperature	10.6 C (51.1 F)	13 of 100 (Routine)
Leakesville 6 WSW	United States	Record low minimum temperature	-8.9 C (16.0 F)	13 of 100 (Routine)
Birch Tree	United States	Record low minimum temperature	-16.1 C (3.0 F)	13 of 100 (Routine)
Mina	United States	Record high maximum temperature	15.0 C (59.0 F)	13 of 100 (Routine)
Blanco	United States	Record low maximum temperature	-2.2 C (28.0 F)	13 of 100 (Routine)
Blanco	United States	Record daily precipitation	17.8 mm (0.7 in)	13 of 100 (Routine)
Helena Wb City	United States	Record snow depth	30.5 cm (12.0 in)	13 of 100 (Routine)

Counts by Type and Timescale

156 records

Records set or tied on 21 December 1929 by type: Highest daily maximum 12, Lowest daily maximum 62, Highest daily minimum 5, Lowest daily minimum 24, Heaviest daily rainfall 28, Heaviest daily snowfall 16, Deepest snow cover 9.

Records on 21 December 1929 by type
Record type	Records
Highest daily maximum	12
Lowest daily maximum	62
Highest daily minimum	5
Lowest daily minimum	24
Heaviest daily rainfall	28
Heaviest daily snowfall	16
Deepest snow cover	9

Records on 21 December 1929 by timescale: all-time 7, monthly 5, daily 144.

How Much Records Were Beaten By

114 broken records

Margins by which the 114 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 114.0. Ties are not counted.

Top 20 by Significance

21 December 1929

Top 20 records on 21 December 1929 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 December 1929	Pesaro, IT	daily rain	56.0 mm (2.2 in)	36.0 mm (1.4 in)	29 years	53 of 100 (Notable)
21 December 1929	Hallettsville 2 N, US	monthly snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	31 years	37 of 100 (Notable)
21 December 1929	Blanco, US	all-time snowfall	17.8 cm (7.0 in)	6.4 cm (2.5 in)	3 years	36 of 100 (Notable)
21 December 1929	Hewitt, US	all-time snow depth	25.4 cm (10.0 in)	10.2 cm (4.0 in)	3 years	36 of 100 (Notable)
21 December 1929	Hobart Botanical Gardens, AU	daily rain	58.9 mm (2.3 in)	23.1 mm (0.9 in)	12 years	35 of 100 (Notable)
21 December 1929	New Braunfels, US	all-time snow depth	12.7 cm (5.0 in)	10.2 cm (4.0 in)	6 years	35 of 100 (Notable)
21 December 1929	Rokeby (the Mall), AU	daily rain	39.9 mm (1.6 in)	21.6 mm (0.9 in)	12 years	33 of 100 (Routine)
21 December 1929	New Braunfels, US	all-time snowfall	11.7 cm (4.6 in)	0.3 cm (0.1 in)	34 years	33 of 100 (Routine)
21 December 1929	Beatrice, CA	daily snowfall	27.9 cm (11.0 in)	11.4 cm (4.5 in)	39 years	32 of 100 (Routine)
21 December 1929	Llano, US	all-time snowfall	17.8 cm (7.0 in)	2.6 cm (1.0 in)	11 years	31 of 100 (Routine)
21 December 1929	Cape Bruny Lighthouse, AU	daily rain	25.1 mm (1.0 in)	12.7 mm (0.5 in)	12 years	30 of 100 (Routine)
21 December 1929	Coleman, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	34 years	28 of 100 (Routine)
21 December 1929	Hobart (Ellerslie Road), AU	monthly rain	71.6 mm (2.8 in)	8.6 mm (0.34 in)	13 years	27 of 100 (Routine)
21 December 1929	Bagdad, AU	daily rain	28.4 mm (1.1 in)	21.3 mm (0.8 in)	19 years	26 of 100 (Routine)
21 December 1929	St Helens Post Office, AU	daily rain	31.8 mm (1.3 in)	11.5 mm (0.5 in)	12 years	24 of 100 (Routine)
21 December 1929	Sandford (Maydena), AU	daily rain	35.8 mm (1.4 in)	16.2 mm (0.6 in)	12 years	24 of 100 (Routine)
21 December 1929	Boerne, US	monthly snowfall	16.5 cm (6.5 in)	1.3 cm (0.5 in)	31 years	24 of 100 (Routine)
21 December 1929	Ft Stanton, US	daily low max	-6.1 C (21.0 F)	6.1 C (11.0 F)	31 years	22 of 100 (Routine)
21 December 1929	Port Arthur, AU	daily rain	30.5 mm (1.2 in)	9.4 mm (0.37 in)	11 years	21 of 100 (Routine)
21 December 1929	Mahackala, RU	daily rain	22.6 mm (0.9 in)	10.3 mm (0.4 in)	15 years	20 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 1929

Records set or tied on this calendar date in each year from 1793 to 1929. 1929 had 156 records.

Counts for years before the ledger starts come from the same station rules.

Records on 12-21 in each year
Year	Records
1793	1
1794	1
1799	1
1801	2
1808	3
1825	1
1828	1
1839	1
1846	1
1850	1
1855	7
1859	1
1860	1
1868	1
1870	1
1871	2
1874	2
1875	3
1876	1
1877	1
1878	1
1879	1
1880	1
1884	1
1886	3
1889	1
1890	4
1893	4
1894	1
1895	5
1896	3
1897	3
1898	1
1900	8
1901	15
1902	5
1903	25
1904	3
1905	15
1906	15
1907	17
1908	19
1909	20
1910	29
1911	36
1912	23
1913	11
1914	107
1915	43
1916	40
1917	18
1918	41
1919	57
1920	30
1921	104
1922	34
1923	323
1924	377
1925	120
1926	178
1927	147
1928	70
1929	156
1930	66
1931	556
1932	150
1933	581
1934	230
1935	398
1936	323
1937	189
1938	145
1939	140
1940	622
1941	651
1942	968
1943	148
1944	762
1945	396
1946	495
1947	700
1948	297
1949	1,281
1950	504
1951	1,061
1952	197
1953	256
1954	444
1955	888
1956	672
1957	846
1958	516
1959	272
1960	585
1961	254
1962	563
1963	1,137
1964	613
1965	247
1966	400
1967	1,923
1968	818
1969	828
1970	547
1971	680
1972	651
1973	1,292
1974	374
1975	548
1976	446
1977	470
1978	517
1979	558
1980	726
1981	1,476
1982	702
1983	3,324
1984	1,012
1985	979
1986	404
1987	775
1988	717
1989	3,203
1990	2,701
1991	1,125
1992	751
1993	967
1994	793
1995	878
1996	1,114
1997	810
1998	1,142
1999	851
2000	944
2001	650
2002	579
2003	1,103
2004	675
2005	606
2006	1,443
2007	946
2008	1,062
2009	1,097
2010	2,039
2011	653
2012	759
2013	1,029
2014	878
2015	1,173
2016	543
2017	459
2018	742
2019	755
2020	965
2021	323
2022	528
2023	1,170
2024	778
2025	1,099

Download the Data

Data for records on 1929-12-21: 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	96
20 to 40	7
40 to 60	4
60 to 80	4
80 to 100	0
100 to 120	3