Weather Records on 17 December 1991

577 weather records were set or tied worldwide on 17 December 1991. Highest significance: Toolangi (Mount St Leonard Dpi, AU.

Key Facts for 17 December 1991

On 17 December 1991, 577 weather records were set or tied at long-record stations worldwide.
175 were record highs and 84 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 567 daily.
Toolangi (Mount St Leonard Dpi set a monthly record daily precipitation of 121.2 mm (4.8 in) on 17 December 1991.
Across 160 earlier years (1793 to 2025) the same calendar date averaged 462 records.

Record Map

577 stations

577 station records on 17 December 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 December 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Toolangi (Mount St Leonard Dpi	Australia	Record daily precipitation	121.2 mm (4.8 in)	62 of 100 (Major)
Maroondah Weir (Melbourne Wate	Australia	Record daily precipitation	93.4 mm (3.7 in)	59 of 100 (Notable)
Coranderrk Badger Weir	Australia	Record daily precipitation	87.2 mm (3.4 in)	51 of 100 (Notable)
Kinglake West (Wallaby Creek)	Australia	Record daily precipitation	51.0 mm (2.0 in)	51 of 100 (Notable)
Ballarat Botanical Gardens	Australia	Record daily precipitation	27.4 mm (1.1 in)	48 of 100 (Notable)
Mickleham	Australia	Record daily precipitation	36.0 mm (1.4 in)	47 of 100 (Notable)
Anna	United States	Record daily precipitation	61.7 mm (2.4 in)	45 of 100 (Notable)
Gisborne	Australia	Record daily precipitation	48.0 mm (1.9 in)	43 of 100 (Notable)
Victoria Valley (Glenrowan)	Australia	Record daily precipitation	63.6 mm (2.5 in)	43 of 100 (Notable)
Lilydale	Australia	Record daily precipitation	66.6 mm (2.6 in)	41 of 100 (Notable)
Great Sand Dunes Np & Preserve	United States	Record snow depth	45.7 cm (18.0 in)	41 of 100 (Notable)
Brighton (Dendy Park Bowling C	Australia	Record daily precipitation	27.0 mm (1.1 in)	40 of 100 (Notable)
Hampshire (Neena Road)	Australia	Record daily precipitation	26.0 mm (1.0 in)	39 of 100 (Notable)
Buxton	United Kingdom	Record high maximum temperature	10.5 C (50.9 F)	39 of 100 (Notable)
Lobo	Brazil	Record daily precipitation	61.0 mm (2.4 in)	38 of 100 (Notable)
Bradford 4SW Rsch 5	United States	Record snow depth	68.6 cm (27.0 in)	38 of 100 (Notable)
Preston Reservoir	Australia	Record daily precipitation	34.4 mm (1.4 in)	37 of 100 (Notable)
Lake Margaret Dam	Australia	Record daily precipitation	55.0 mm (2.2 in)	36 of 100 (Notable)
Rietfontein (Pol)	South Africa	Record daily precipitation	28.0 mm (1.1 in)	36 of 100 (Notable)
Dushanbe	Tajikistan	Record daily precipitation	30.3 mm (1.2 in)	35 of 100 (Notable)
Detour Village	United States	Record daily snowfall	12.7 cm (5.0 in)	34 of 100 (Routine)
Canary Island	Australia	Record daily precipitation	29.3 mm (1.2 in)	33 of 100 (Routine)
Shoreham	Australia	Record daily precipitation	29.0 mm (1.1 in)	33 of 100 (Routine)
Osterley	Australia	Record daily precipitation	31.0 mm (1.2 in)	33 of 100 (Routine)
Manassa	United States	Record low maximum temperature	-8.3 C (17.1 F)	33 of 100 (Routine)
Korumburra	Australia	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Bentleigh	Australia	Record daily precipitation	58.0 mm (2.3 in)	32 of 100 (Routine)
Lake Echo Power Station	Australia	Record daily precipitation	41.8 mm (1.6 in)	32 of 100 (Routine)
Hull	United Kingdom	Record high maximum temperature	12.5 C (54.5 F)	32 of 100 (Routine)
Bridgetown Comparison	Australia	Record high maximum temperature	39.2 C (102.6 F)	31 of 100 (Routine)
Cabramurra Smhea	Australia	Record daily precipitation	71.4 mm (2.8 in)	31 of 100 (Routine)
Cadillac	United States	Record daily snowfall	12.4 cm (4.9 in)	31 of 100 (Routine)
Derby Post Office	Australia	Record daily precipitation	26.0 mm (1.0 in)	30 of 100 (Routine)
Wandering Comparison	Australia	Record high minimum temperature	21.5 C (70.7 F)	30 of 100 (Routine)
Cradle Valley (Waldheim)	Australia	Record daily precipitation	38.8 mm (1.5 in)	30 of 100 (Routine)
Quata	Brazil	Record daily precipitation	97.1 mm (3.8 in)	30 of 100 (Routine)
Rio Grande (Smn)	Mexico	Record low maximum temperature	11.7 C (53.1 F)	30 of 100 (Routine)
Ponce 4 E	Puerto Rico [United States]	Record low maximum temperature	27.8 C (82.0 F)	30 of 100 (Routine)
Grand Marais	United States	Record snow depth	48.3 cm (19.0 in)	30 of 100 (Routine)
Tower 2S	United States	Record snow depth	63.5 cm (25.0 in)	30 of 100 (Routine)
Kellerberrin	Australia	Record high minimum temperature	26.8 C (80.2 F)	29 of 100 (Routine)
Hambantota	Sri Lanka	Record low maximum temperature	25.0 C (77.0 F)	29 of 100 (Routine)
Shimizu	Japan	Record daily precipitation	49.0 mm (1.9 in)	29 of 100 (Routine)
Bradford 4SW Rsch 5	United States	Record daily snowfall	20.3 cm (8.0 in)	29 of 100 (Routine)
Cooper Lake Project	United States	Record snow depth	71.1 cm (28.0 in)	29 of 100 (Routine)
Jindivick	Australia	Record daily precipitation	52.4 mm (2.1 in)	28 of 100 (Routine)
Warburton	Australia	Record daily precipitation	85.0 mm (3.3 in)	28 of 100 (Routine)
Vladikavkaz	Russia	Record low minimum temperature	-13.1 C (8.4 F)	28 of 100 (Routine)
Fort Cunynghame (Bos)	South Africa	Record daily precipitation	38.0 mm (1.5 in)	28 of 100 (Routine)
White Signal	United States	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Springvale Necropolis	Australia	Record daily precipitation	43.0 mm (1.7 in)	27 of 100 (Routine)
Roodepoort	South Africa	Record daily precipitation	45.0 mm (1.8 in)	27 of 100 (Routine)
Perth Regional Office	Australia	Record high minimum temperature	26.3 C (79.3 F)	26 of 100 (Routine)
Donnybrook	Australia	Record high minimum temperature	20.0 C (68.0 F)	26 of 100 (Routine)
Warruwi	Australia	Record daily precipitation	84.0 mm (3.3 in)	26 of 100 (Routine)
Monte Vista 2W	United States	Record low maximum temperature	-10.6 C (12.9 F)	26 of 100 (Routine)
Laurelville	United States	Record daily precipitation	49.5 mm (1.9 in)	26 of 100 (Routine)
Rancharia (Mc Fadden)	Brazil	Record daily precipitation	46.9 mm (1.8 in)	25 of 100 (Routine)
Khorog	Tajikistan	Record high minimum temperature	1.1 C (34.0 F)	25 of 100 (Routine)
Matsuyama	Japan	Record high minimum temperature	10.8 C (51.4 F)	24 of 100 (Routine)

Counts by Type and Timescale

577 records

Records set or tied on 17 December 1991 by type: Highest daily maximum 100, Lowest daily maximum 56, Highest daily minimum 75, Lowest daily minimum 28, Heaviest daily rainfall 291, Heaviest daily snowfall 13, Deepest snow cover 14.

Records on 17 December 1991 by type
Record type	Records
Highest daily maximum	100
Lowest daily maximum	56
Highest daily minimum	75
Lowest daily minimum	28
Heaviest daily rainfall	291
Heaviest daily snowfall	13
Deepest snow cover	14

Records on 17 December 1991 by timescale: all-time 0, monthly 10, daily 567.

How Much Records Were Beaten By

497 broken records

Margins by which the 497 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 305.0. Ties are not counted.

Top 20 by Significance

17 December 1991

Top 20 records on 17 December 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 December 1991	Toolangi (Mount St Leonard Dpi, AU	monthly rain	121.2 mm (4.8 in)	53.6 mm (2.1 in)	33 years	62 of 100 (Major)
17 December 1991	Maroondah Weir (Melbourne Wate, AU	daily rain	93.4 mm (3.7 in)	59.1 mm (2.3 in)	32 years	59 of 100 (Notable)
17 December 1991	Coranderrk Badger Weir, AU	daily rain	87.2 mm (3.4 in)	56.2 mm (2.2 in)	4 years	51 of 100 (Notable)
17 December 1991	Kinglake West (Wallaby Creek), AU	daily rain	51.0 mm (2.0 in)	29.4 mm (1.2 in)	60 years	51 of 100 (Notable)
17 December 1991	Ballarat Botanical Gardens, AU	daily rain	27.4 mm (1.1 in)	7.1 mm (0.28 in)	103 years	48 of 100 (Notable)
17 December 1991	Mickleham, AU	daily rain	36.0 mm (1.4 in)	12.4 mm (0.5 in)	88 years	47 of 100 (Notable)
17 December 1991	Anna, US	daily rain	61.7 mm (2.4 in)	10.9 mm (0.4 in)	92 years	45 of 100 (Notable)
17 December 1991	Gisborne, AU	daily rain	48.0 mm (1.9 in)	21.6 mm (0.9 in)	32 years	43 of 100 (Notable)
17 December 1991	Victoria Valley (Glenrowan), AU	monthly rain	63.6 mm (2.5 in)	16.1 mm (0.6 in)	33 years	43 of 100 (Notable)
17 December 1991	Lilydale, AU	daily rain	66.6 mm (2.6 in)	32.2 mm (1.3 in)	4 years	41 of 100 (Notable)
17 December 1991	Great Sand Dunes Np & Preserve, US	daily snow depth	45.7 cm (18.0 in)	20.3 cm (8.0 in)	29 years	41 of 100 (Notable)
17 December 1991	Brighton (Dendy Park Bowling C, AU	daily rain	27.0 mm (1.1 in)	16.6 mm (0.7 in)	54 years	40 of 100 (Notable)
17 December 1991	Hampshire (Neena Road), AU	daily rain	26.0 mm (1.0 in)	16.6 mm (0.7 in)	60 years	39 of 100 (Notable)
17 December 1991	Buxton, GB	daily high max	10.5 C (50.9 F)	0.3 C (0.5 F)	98 years	39 of 100 (Notable)
17 December 1991	Lobo, BR	daily rain	61.0 mm (2.4 in)	35.9 mm (1.4 in)	29 years	38 of 100 (Notable)
17 December 1991	Bradford 4SW Rsch 5, US	daily snow depth	68.6 cm (27.0 in)	30.5 cm (12.0 in)	28 years	38 of 100 (Notable)
17 December 1991	Preston Reservoir, AU	daily rain	34.4 mm (1.4 in)	11.8 mm (0.5 in)	54 years	37 of 100 (Notable)
17 December 1991	Lake Margaret Dam, AU	daily rain	55.0 mm (2.2 in)	16.4 mm (0.6 in)	62 years	36 of 100 (Notable)
17 December 1991	Rietfontein (Pol), ZA	daily rain	28.0 mm (1.1 in)	17.0 mm (0.7 in)	37 years	36 of 100 (Notable)
17 December 1991	Dushanbe, TJ	daily rain	30.3 mm (1.2 in)	15.7 mm (0.6 in)	22 years	35 of 100 (Notable)

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 1991

Records set or tied on this calendar date in each year from 1793 to 1991. 1991 had 577 records.

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

Records on 12-17 in each year
Year	Records
1793	2
1796	1
1806	2
1808	2
1814	1
1815	1
1839	1
1845	1
1846	4
1847	1
1848	1
1859	3
1866	1
1867	1
1868	1
1869	2
1873	2
1876	3
1877	2
1878	1
1879	2
1881	2
1885	1
1886	1
1888	2
1889	2
1890	4
1892	4
1893	2
1894	4
1895	3
1896	4
1897	4
1898	2
1899	1
1900	6
1901	5
1902	47
1903	2
1904	14
1905	2
1906	17
1907	9
1908	13
1909	5
1910	37
1911	12
1912	15
1913	21
1914	17
1915	31
1916	21
1917	21
1918	21
1919	109
1920	97
1921	94
1922	120
1923	170
1924	505
1925	79
1926	172
1927	143
1928	359
1929	221
1930	362
1931	217
1932	684
1933	710
1934	200
1935	87
1936	504
1937	379
1938	118
1939	1,126
1940	248
1941	261
1942	507
1943	444
1944	189
1945	621
1946	207
1947	258
1948	316
1949	296
1950	294
1951	773
1952	277
1953	283
1954	409
1955	419
1956	448
1957	686
1958	540
1959	548
1960	492
1961	911
1962	676
1963	531
1964	1,239
1965	482
1966	516
1967	1,121
1968	338
1969	238
1970	820
1971	781
1972	601
1973	1,016
1974	390
1975	474
1976	507
1977	1,024
1978	710
1979	951
1980	1,116
1981	1,354
1982	569
1983	1,264
1984	1,618
1985	1,210
1986	743
1987	1,191
1988	481
1989	2,905
1990	866
1991	577
1992	1,461
1993	761
1994	685
1995	956
1996	1,212
1997	1,279
1998	695
1999	901
2000	1,566
2001	1,262
2002	858
2003	751
2004	554
2005	806
2006	1,307
2007	1,100
2008	1,354
2009	926
2010	1,405
2011	430
2012	942
2013	718
2014	370
2015	1,378
2016	1,521
2017	408
2018	498
2019	917
2020	768
2021	908
2022	595
2023	931
2024	560
2025	1,198

Download the Data

Data for records on 1991-12-17: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	483
50 to 100	8
100 to 150	2
150 to 200	1
200 to 250	1
250 to 300	1
300 to 350	1