Weather Records on 20 December 1929

256 weather records were set or tied worldwide on 20 December 1929. Highest significance: Logan 1 WNW, US.

Key Facts for 20 December 1929

On 20 December 1929, 256 weather records were set or tied at long-record stations worldwide.
42 were record highs and 161 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 251 daily.
Logan 1 WNW set a daily record snow depth of 45.7 cm (18.0 in) on 20 December 1929.
Across 163 earlier years (1793 to 2025) the same calendar date averaged 468 records.

Record Map

256 stations

256 station records on 20 December 1929 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 December 1929: highest significance records shown on the map
Station	Country	Type	Value	Significance
Logan 1 WNW	United States	Record snow depth	45.7 cm (18.0 in)	53 of 100 (Notable)
Lakefield	Canada	Record daily snowfall	27.9 cm (11.0 in)	51 of 100 (Notable)
Lakefield	Canada	Record daily precipitation	27.9 mm (1.1 in)	42 of 100 (Notable)
Mahackala	Russia	Record daily precipitation	26.4 mm (1.0 in)	36 of 100 (Notable)
Welland	Canada	Record daily snowfall	20.3 cm (8.0 in)	35 of 100 (Notable)
Yarmouth	Canada	Record daily precipitation	26.4 mm (1.0 in)	27 of 100 (Routine)
Napa State Hospital	United States	Record high maximum temperature	22.2 C (72.0 F)	26 of 100 (Routine)
Andenes	Norway	Record high minimum temperature	6.4 C (43.5 F)	25 of 100 (Routine)
Agricultural College	United States	Record daily snowfall	8.9 cm (3.5 in)	25 of 100 (Routine)
El Paso	United States	Record daily snowfall	13.2 cm (5.2 in)	25 of 100 (Routine)
Bajramaly	Turkmenistan	Record low minimum temperature	-18.1 C (-0.6 F)	24 of 100 (Routine)
Grayling	United States	Record low maximum temperature	-15.6 C (3.9 F)	23 of 100 (Routine)
Blinkbonnie	Australia	Record daily precipitation	30.5 mm (1.2 in)	22 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record low minimum temperature	-14.3 C (6.3 F)	22 of 100 (Routine)
Cheboygan	United States	Record low maximum temperature	-11.7 C (10.9 F)	22 of 100 (Routine)
Napa State Hospital	United States	Record high minimum temperature	12.2 C (54.0 F)	21 of 100 (Routine)
Framingham	United States	Record daily precipitation	42.2 mm (1.7 in)	21 of 100 (Routine)
E Tawas	United States	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Surat	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Robeline	United States	Record low maximum temperature	0.6 C (33.1 F)	20 of 100 (Routine)
Farmington	United States	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Toledo Blade	United States	Record snow depth	22.9 cm (9.0 in)	20 of 100 (Routine)
El Paso	United States	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Woodford Post Office	Australia	Record daily precipitation	58.7 mm (2.3 in)	19 of 100 (Routine)
Bizerte Cap Blanc	Tunisia	Record low minimum temperature	2.8 C (37.0 F)	19 of 100 (Routine)
Talbotton	United States	Record low maximum temperature	-1.1 C (30.0 F)	19 of 100 (Routine)
Coldwater St School	United States	Record snow depth	22.9 cm (9.0 in)	19 of 100 (Routine)
Sfax El-Maou	Tunisia	Record low maximum temperature	11.0 C (51.8 F)	18 of 100 (Routine)
Sfax El-Maou	Tunisia	Record low minimum temperature	2.0 C (35.6 F)	18 of 100 (Routine)
San Diego Wbo	United States	Record high maximum temperature	25.0 C (77.0 F)	18 of 100 (Routine)
Cap Chat	Canada	Record daily precipitation	10.2 mm (0.4 in)	17 of 100 (Routine)
Clanton	United States	Record low maximum temperature	-3.9 C (25.0 F)	17 of 100 (Routine)
Oakland	United States	Record high minimum temperature	12.8 C (55.0 F)	17 of 100 (Routine)
Portland	United States	Record daily precipitation	14.2 mm (0.6 in)	17 of 100 (Routine)
Brunswick	United States	Record low maximum temperature	-13.3 C (8.1 F)	17 of 100 (Routine)
Burlington	United States	Record daily precipitation	13.0 mm (0.5 in)	17 of 100 (Routine)
Halifax	Canada	Record daily precipitation	23.9 mm (0.9 in)	16 of 100 (Routine)
San Jose	United States	Record high maximum temperature	21.7 C (71.1 F)	16 of 100 (Routine)
Madison Sewage Plt	United States	Record low maximum temperature	-7.2 C (19.0 F)	16 of 100 (Routine)
Frankfort Downtown	United States	Record low maximum temperature	-7.2 C (19.0 F)	16 of 100 (Routine)
Clinton Forestry HQ	United States	Record low minimum temperature	-8.3 C (17.1 F)	16 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record low maximum temperature	13.9 C (57.0 F)	15 of 100 (Routine)
St Helens Post Office	Australia	Record daily precipitation	12.2 mm (0.5 in)	15 of 100 (Routine)
Yarmouth	Canada	Record high maximum temperature	11.1 C (52.0 F)	15 of 100 (Routine)
Camden 1	United States	Record low maximum temperature	-2.8 C (27.0 F)	15 of 100 (Routine)
Healdsburg	United States	Record high maximum temperature	21.1 C (70.0 F)	15 of 100 (Routine)
Roberts Dam	United States	Record daily precipitation	12.7 mm (0.5 in)	15 of 100 (Routine)
Brookhaven City	United States	Record low maximum temperature	-0.6 C (30.9 F)	15 of 100 (Routine)
Duck Hill	United States	Record low minimum temperature	-13.3 C (8.1 F)	15 of 100 (Routine)
Johnsonville	United States	Record daily snowfall	0.5 cm (0.2 in)	15 of 100 (Routine)
Mc Minnville	United States	Record low maximum temperature	-4.4 C (24.1 F)	15 of 100 (Routine)
Tunis	Tunisia	Record low maximum temperature	8.0 C (46.4 F)	14 of 100 (Routine)
Eufaula	United States	Record low maximum temperature	0.6 C (33.1 F)	14 of 100 (Routine)
Stockton 2	United States	Record high minimum temperature	8.3 C (46.9 F)	14 of 100 (Routine)
De Funiak Springs 1 E	United States	Record low maximum temperature	3.9 C (39.0 F)	14 of 100 (Routine)
Tallahassee	United States	Record low minimum temperature	-6.7 C (19.9 F)	14 of 100 (Routine)
Clayton 1 SSW	United States	Record low maximum temperature	-4.4 C (24.1 F)	14 of 100 (Routine)
Schriever	United States	Record low minimum temperature	-7.2 C (19.0 F)	14 of 100 (Routine)
Orono	United States	Record daily precipitation	10.7 mm (0.4 in)	14 of 100 (Routine)
Bay Saint Louis	United States	Record low minimum temperature	-7.8 C (18.0 F)	14 of 100 (Routine)

Counts by Type and Timescale

256 records

Records set or tied on 20 December 1929 by type: Highest daily maximum 23, Lowest daily maximum 85, Highest daily minimum 19, Lowest daily minimum 76, Heaviest daily rainfall 37, Heaviest daily snowfall 11, Deepest snow cover 5.

Records on 20 December 1929 by type
Record type	Records
Highest daily maximum	23
Lowest daily maximum	85
Highest daily minimum	19
Lowest daily minimum	76
Heaviest daily rainfall	37
Heaviest daily snowfall	11
Deepest snow cover	5

Records on 20 December 1929 by timescale: all-time 0, monthly 5, daily 251.

How Much Records Were Beaten By

195 broken records

Margins by which the 195 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 457.0. Ties are not counted.

Top 20 by Significance

20 December 1929

Top 20 records on 20 December 1929 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 December 1929	Logan 1 WNW, US	daily snow depth	45.7 cm (18.0 in)	45.7 cm (18.0 in)	35 years	53 of 100 (Notable)
20 December 1929	Lakefield, CA	daily snowfall	27.9 cm (11.0 in)	17.7 cm (7.0 in)	26 years	51 of 100 (Notable)
20 December 1929	Lakefield, CA	daily rain	27.9 mm (1.1 in)	17.7 mm (0.7 in)	26 years	42 of 100 (Notable)
20 December 1929	Mahackala, RU	daily rain	26.4 mm (1.0 in)	12.7 mm (0.5 in)	12 years	36 of 100 (Notable)
20 December 1929	Welland, CA	daily snowfall	20.3 cm (8.0 in)	12.7 cm (5.0 in)	44 years	35 of 100 (Notable)
20 December 1929	Yarmouth, CA	daily rain	26.4 mm (1.0 in)	7.9 mm (0.31 in)	43 years	27 of 100 (Routine)
20 December 1929	Napa State Hospital, US	daily high max	22.2 C (72.0 F)	5.0 C (9.0 F)	32 years	26 of 100 (Routine)
20 December 1929	Andenes, NO	daily high min	6.4 C (43.5 F)	3.4 C (6.1 F)	37 years	25 of 100 (Routine)
20 December 1929	Agricultural College, US	daily snowfall	8.9 cm (3.5 in)	7.4 cm (2.9 in)	29 years	25 of 100 (Routine)
20 December 1929	El Paso, US	monthly snowfall	13.2 cm (5.2 in)	3.3 cm (1.3 in)	20 years	25 of 100 (Routine)
20 December 1929	Bajramaly, TM	daily low min	-18.1 C (-0.6 F)	5.7 C (10.3 F)	32 years	24 of 100 (Routine)
20 December 1929	Grayling, US	daily low max	-15.6 C (3.9 F)	6.2 C (11.2 F)	28 years	23 of 100 (Routine)
20 December 1929	Blinkbonnie, AU	daily rain	30.5 mm (1.2 in)	7.4 mm (0.29 in)	40 years	22 of 100 (Routine)
20 December 1929	Gyzylarbat, TM	daily low min	-14.3 C (6.3 F)	4.8 C (8.6 F)	29 years	22 of 100 (Routine)
20 December 1929	Cheboygan, US	daily low max	-11.7 C (10.9 F)	3.9 C (7.0 F)	36 years	22 of 100 (Routine)
20 December 1929	Napa State Hospital, US	daily high min	12.2 C (54.0 F)	3.3 C (5.9 F)	35 years	21 of 100 (Routine)
20 December 1929	Framingham, US	daily rain	42.2 mm (1.7 in)	18.1 mm (0.7 in)	26 years	21 of 100 (Routine)
20 December 1929	E Tawas, US	daily rain	18.0 mm (0.7 in)	10.4 mm (0.4 in)	26 years	20 of 100 (Routine)
20 December 1929	Surat, AU	daily rain	19.8 mm (0.8 in)	14.2 mm (0.6 in)	31 years	20 of 100 (Routine)
20 December 1929	Robeline, US	daily low max	0.6 C (33.1 F)	5.5 C (9.9 F)	32 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 256 records.

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

Records on 12-20 in each year
Year	Records
1793	1
1795	1
1804	1
1805	2
1808	1
1815	1
1828	1
1837	1
1846	1
1855	8
1858	1
1860	1
1866	1
1867	1
1868	1
1869	1
1871	2
1874	3
1875	1
1877	2
1878	1
1879	1
1880	1
1881	1
1882	1
1884	4
1885	1
1886	4
1889	4
1890	2
1891	2
1892	1
1894	2
1895	8
1896	1
1897	4
1898	2
1899	1
1900	7
1901	8
1902	14
1903	17
1904	9
1905	5
1906	5
1907	11
1908	5
1909	22
1910	17
1911	24
1912	27
1913	7
1914	43
1915	18
1916	45
1917	33
1918	18
1919	25
1920	22
1921	101
1922	88
1923	215
1924	332
1925	96
1926	163
1927	200
1928	93
1929	256
1930	67
1931	536
1932	170
1933	492
1934	265
1935	152
1936	416
1937	181
1938	240
1939	308
1940	965
1941	633
1942	817
1943	193
1944	340
1945	430
1946	327
1947	385
1948	345
1949	1,141
1950	758
1951	926
1952	394
1953	385
1954	416
1955	726
1956	471
1957	1,354
1958	382
1959	142
1960	354
1961	369
1962	475
1963	875
1964	499
1965	353
1966	555
1967	1,370
1968	482
1969	514
1970	518
1971	441
1972	448
1973	1,184
1974	328
1975	610
1976	382
1977	484
1978	910
1979	600
1980	667
1981	1,681
1982	712
1983	2,995
1984	1,411
1985	1,035
1986	321
1987	1,179
1988	760
1989	1,812
1990	1,885
1991	1,172
1992	1,134
1993	1,266
1994	813
1995	1,128
1996	1,448
1997	651
1998	1,110
1999	938
2000	1,150
2001	523
2002	943
2003	1,315
2004	836
2005	515
2006	1,387
2007	986
2008	1,356
2009	1,502
2010	2,055
2011	846
2012	1,131
2013	584
2014	524
2015	1,238
2016	603
2017	688
2018	592
2019	731
2020	554
2021	442
2022	567
2023	1,242
2024	897
2025	1,166

Download the Data

Data for records on 1929-12-20: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Histogram of margins by which records were beaten on 20 December 1929
Margin	Records
0 to 100	192
100 to 200	2
200 to 300	0
300 to 400	0
400 to 500	1