Weather Records on 15 December 1991

636 weather records were set or tied worldwide on 15 December 1991. Highest significance: St Helens Post Office, AU.

Key Facts for 15 December 1991

On 15 December 1991, 636 weather records were set or tied at long-record stations worldwide.
200 were record highs and 154 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 623 daily.
St Helens Post Office set a daily record precipitation of 60.6 mm (2.4 in) on 15 December 1991.
Across 168 earlier years (1793 to 2025) the same calendar date averaged 455 records.

Record Map

636 stations

636 station records on 15 December 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 December 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
St Helens Post Office	Australia	Record daily precipitation	60.6 mm (2.4 in)	64 of 100 (Major)
St Marys (Cullenswood)	Australia	Record daily precipitation	76.8 mm (3.0 in)	57 of 100 (Notable)
Bombay/Santacruz	India	Record daily precipitation	151.9 mm (6.0 in)	56 of 100 (Notable)
El Copital	Mexico	Record daily precipitation	159.8 mm (6.3 in)	56 of 100 (Notable)
Olean	United States	Record daily snowfall	18.5 cm (7.3 in)	54 of 100 (Notable)
Bellerive (Fort Street)	Australia	Record daily precipitation	26.2 mm (1.0 in)	51 of 100 (Notable)
Ballesmi	Mexico	Record daily precipitation	77.0 mm (3.0 in)	51 of 100 (Notable)
San Martin Chalchicuautla	Mexico	Record daily precipitation	69.9 mm (2.8 in)	51 of 100 (Notable)
Santa Cruz	Mexico	Record daily precipitation	61.0 mm (2.4 in)	51 of 100 (Notable)
Tanlacut	Mexico	Record daily precipitation	66.3 mm (2.6 in)	51 of 100 (Notable)
Aquismon	Mexico	Record daily precipitation	74.9 mm (2.9 in)	50 of 100 (Notable)
Requetemu	Mexico	Record daily precipitation	54.4 mm (2.1 in)	50 of 100 (Notable)
Buckland (Brockley)	Australia	Record daily precipitation	48.0 mm (1.9 in)	49 of 100 (Notable)
Perus	Brazil	Record daily precipitation	97.7 mm (3.8 in)	48 of 100 (Notable)
Kellevie	Australia	Record daily precipitation	75.0 mm (3.0 in)	47 of 100 (Notable)
Southport	Australia	Record daily precipitation	31.4 mm (1.2 in)	47 of 100 (Notable)
Cape Grim (Woolnorth)	Australia	Record daily precipitation	30.8 mm (1.2 in)	46 of 100 (Notable)
Orleans-Montante (Pcd)	Brazil	Record daily precipitation	72.2 mm (2.8 in)	44 of 100 (Notable)
Canisteo 1 SW	United States	Record daily snowfall	14.0 cm (5.5 in)	44 of 100 (Notable)
Snug Plains (Cataract Falls)	Australia	Record daily precipitation	55.0 mm (2.2 in)	43 of 100 (Notable)
Kettering (Saddle Road)	Australia	Record daily precipitation	43.0 mm (1.7 in)	42 of 100 (Notable)
Bradford Cntrl Fs	United States	Record daily snowfall	20.3 cm (8.0 in)	42 of 100 (Notable)
Renovo	United States	Record high maximum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Balfour	Australia	Record daily precipitation	33.8 mm (1.3 in)	40 of 100 (Notable)
Bream Creek (Stroud)	Australia	Record daily precipitation	43.0 mm (1.7 in)	39 of 100 (Notable)
Maria Island (Darlington)	Australia	Record daily precipitation	41.0 mm (1.6 in)	39 of 100 (Notable)
Gallinas	Mexico	Record daily precipitation	39.1 mm (1.5 in)	39 of 100 (Notable)
Lunawanna	Australia	Record daily precipitation	31.6 mm (1.2 in)	38 of 100 (Notable)
Rokeby (the Mall)	Australia	Record daily precipitation	27.0 mm (1.1 in)	38 of 100 (Notable)
Dona Francisca (Pcd)	Brazil	Record daily precipitation	70.8 mm (2.8 in)	38 of 100 (Notable)
San Felipe Orizatlan (Smn)	Mexico	Record daily precipitation	81.8 mm (3.2 in)	38 of 100 (Notable)
Painel	Brazil	Record daily precipitation	58.9 mm (2.3 in)	37 of 100 (Notable)
Cerro	United States	Record low maximum temperature	-13.3 C (8.1 F)	36 of 100 (Notable)
Liberty 1 NE	United States	Record high maximum temperature	11.1 C (52.0 F)	35 of 100 (Notable)
Slana	United States	Record daily snowfall	23.1 cm (9.1 in)	35 of 100 (Notable)
Inhumas	Brazil	Record daily precipitation	78.7 mm (3.1 in)	34 of 100 (Routine)
Tanzabaca	Mexico	Record daily precipitation	26.2 mm (1.0 in)	34 of 100 (Routine)
Sao Ludgero	Brazil	Record daily precipitation	67.4 mm (2.7 in)	33 of 100 (Routine)
Great Sand Dunes Np & Preserve	United States	Record snow depth	45.7 cm (18.0 in)	33 of 100 (Routine)
Levendale	Australia	Record daily precipitation	29.2 mm (1.1 in)	32 of 100 (Routine)
Temamatla	Mexico	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
El Chique	Mexico	Record high minimum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Geisenheim	Germany	Record low maximum temperature	-6.2 C (20.8 F)	31 of 100 (Routine)
Boutilimit	Mauritania	Record high minimum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Agua Buena (Smn)	Mexico	Record daily precipitation	29.5 mm (1.2 in)	31 of 100 (Routine)
Charlotteburg Rsvr	United States	Record high maximum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Xicotepec de Juarez	Mexico	Record daily precipitation	43.2 mm (1.7 in)	30 of 100 (Routine)
Moruya Heads Pilot Station	Australia	Record high maximum temperature	30.4 C (86.7 F)	29 of 100 (Routine)
Apslawn	Australia	Record daily precipitation	36.0 mm (1.4 in)	29 of 100 (Routine)
Waratah (Mount Road)	Australia	Record daily precipitation	28.8 mm (1.1 in)	29 of 100 (Routine)
Tupa	Brazil	Record daily precipitation	64.3 mm (2.5 in)	29 of 100 (Routine)
Montrose	United States	Record high maximum temperature	12.2 C (54.0 F)	29 of 100 (Routine)
Sussex Inlet Bowling Club	Australia	Record daily precipitation	66.8 mm (2.6 in)	28 of 100 (Routine)
Cranbrook (Cranbrook House)	Australia	Record daily precipitation	35.6 mm (1.4 in)	28 of 100 (Routine)
Fazenda Mendes	Brazil	Record daily precipitation	41.7 mm (1.6 in)	28 of 100 (Routine)
Rio Do Pouso	Brazil	Record daily precipitation	70.8 mm (2.8 in)	28 of 100 (Routine)
Acambaro	Mexico	Record high minimum temperature	10.6 C (51.1 F)	28 of 100 (Routine)
Calera	Mexico	Record high minimum temperature	13.9 C (57.0 F)	28 of 100 (Routine)
Quitupan	Mexico	Record high maximum temperature	33.9 C (93.0 F)	28 of 100 (Routine)
Delhi 2 SE	United States	Record high maximum temperature	12.8 C (55.0 F)	28 of 100 (Routine)

Counts by Type and Timescale

636 records

Records set or tied on 15 December 1991 by type: Highest daily maximum 92, Lowest daily maximum 74, Highest daily minimum 108, Lowest daily minimum 80, Heaviest daily rainfall 250, Heaviest daily snowfall 23, Deepest snow cover 9.

Records on 15 December 1991 by type
Record type	Records
Highest daily maximum	92
Lowest daily maximum	74
Highest daily minimum	108
Lowest daily minimum	80
Heaviest daily rainfall	250
Heaviest daily snowfall	23
Deepest snow cover	9

Records on 15 December 1991 by timescale: all-time 0, monthly 13, daily 623.

How Much Records Were Beaten By

539 broken records

Margins by which the 539 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

15 December 1991

Top 20 records on 15 December 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 December 1991	St Helens Post Office, AU	daily rain	60.6 mm (2.4 in)	34.4 mm (1.4 in)	76 years	64 of 100 (Major)
15 December 1991	St Marys (Cullenswood), AU	daily rain	76.8 mm (3.0 in)	49.4 mm (1.9 in)	40 years	57 of 100 (Notable)
15 December 1991	Bombay/Santacruz, IN	monthly rain	151.9 mm (6.0 in)	45.0 mm (1.8 in)	8 years	56 of 100 (Notable)
15 December 1991	El Copital, MX	monthly rain	159.8 mm (6.3 in)	114.8 mm (4.5 in)	11 years	56 of 100 (Notable)
15 December 1991	Olean, US	daily snowfall	18.5 cm (7.3 in)	10.9 cm (4.3 in)	76 years	54 of 100 (Notable)
15 December 1991	Bellerive (Fort Street), AU	daily rain	26.2 mm (1.0 in)	14.5 mm (0.6 in)	77 years	51 of 100 (Notable)
15 December 1991	Ballesmi, MX	daily rain	77.0 mm (3.0 in)	69.9 mm (2.8 in)	28 years	51 of 100 (Notable)
15 December 1991	San Martin Chalchicuautla, MX	daily rain	69.9 mm (2.8 in)	65.1 mm (2.6 in)	28 years	51 of 100 (Notable)
15 December 1991	Santa Cruz, MX	daily rain	61.0 mm (2.4 in)	56.2 mm (2.2 in)	28 years	51 of 100 (Notable)
15 December 1991	Tanlacut, MX	daily rain	66.3 mm (2.6 in)	61.0 mm (2.4 in)	28 years	51 of 100 (Notable)
15 December 1991	Aquismon, MX	daily rain	74.9 mm (2.9 in)	67.8 mm (2.7 in)	24 years	50 of 100 (Notable)
15 December 1991	Requetemu, MX	daily rain	54.4 mm (2.1 in)	49.8 mm (2.0 in)	24 years	50 of 100 (Notable)
15 December 1991	Buckland (Brockley), AU	daily rain	48.0 mm (1.9 in)	29.7 mm (1.2 in)	56 years	49 of 100 (Notable)
15 December 1991	Perus, BR	daily rain	97.7 mm (3.8 in)	65.2 mm (2.6 in)	12 years	48 of 100 (Notable)
15 December 1991	Kellevie, AU	daily rain	75.0 mm (3.0 in)	48.1 mm (1.9 in)	17 years	47 of 100 (Notable)
15 December 1991	Southport, AU	daily rain	31.4 mm (1.2 in)	15.9 mm (0.6 in)	62 years	47 of 100 (Notable)
15 December 1991	Cape Grim (Woolnorth), AU	daily rain	30.8 mm (1.2 in)	5.1 mm (0.20 in)	99 years	46 of 100 (Notable)
15 December 1991	Orleans-Montante (Pcd), BR	daily rain	72.2 mm (2.8 in)	36.6 mm (1.4 in)	50 years	44 of 100 (Notable)
15 December 1991	Canisteo 1 SW, US	daily snowfall	14.0 cm (5.5 in)	9.4 cm (3.7 in)	40 years	44 of 100 (Notable)
15 December 1991	Snug Plains (Cataract Falls), AU	daily rain	55.0 mm (2.2 in)	40.6 mm (1.6 in)	10 years	43 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 636 records.

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

Records on 12-15 in each year
Year	Records
1793	1
1796	1
1798	1
1800	1
1808	3
1810	1
1814	3
1815	1
1825	1
1831	1
1840	2
1844	2
1846	3
1847	1
1854	3
1859	2
1863	1
1864	1
1866	1
1867	2
1868	1
1869	1
1870	1
1873	1
1874	1
1878	4
1879	2
1880	2
1881	3
1882	2
1883	1
1885	1
1886	1
1889	3
1890	1
1891	2
1892	4
1893	1
1894	4
1895	1
1896	5
1897	2
1899	12
1900	5
1901	21
1902	3
1903	7
1904	9
1905	6
1906	9
1907	10
1908	5
1909	5
1910	4
1911	23
1912	42
1913	13
1914	239
1915	180
1916	40
1917	40
1918	54
1919	28
1920	35
1921	26
1922	65
1923	132
1924	358
1925	187
1926	226
1927	235
1928	388
1929	500
1930	160
1931	284
1932	385
1933	796
1934	199
1935	140
1936	286
1937	310
1938	100
1939	637
1940	464
1941	373
1942	385
1943	486
1944	281
1945	420
1946	521
1947	634
1948	1,239
1949	135
1950	292
1951	962
1952	367
1953	270
1954	413
1955	371
1956	531
1957	304
1958	531
1959	560
1960	313
1961	883
1962	979
1963	670
1964	371
1965	759
1966	275
1967	948
1968	510
1969	352
1970	215
1971	1,739
1972	1,159
1973	615
1974	511
1975	1,230
1976	349
1977	963
1978	499
1979	560
1980	1,085
1981	1,243
1982	831
1983	1,229
1984	1,397
1985	1,077
1986	502
1987	1,740
1988	519
1989	2,753
1990	846
1991	636
1992	1,263
1993	734
1994	676
1995	848
1996	727
1997	1,521
1998	1,216
1999	621
2000	1,154
2001	1,026
2002	831
2003	846
2004	795
2005	953
2006	1,491
2007	973
2008	1,789
2009	930
2010	1,705
2011	780
2012	1,058
2013	701
2014	1,045
2015	1,398
2016	1,024
2017	332
2018	539
2019	547
2020	400
2021	1,182
2022	1,057
2023	794
2024	369
2025	2,115

Download the Data

Data for records on 1991-12-15: 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 20	487
20 to 40	24
40 to 60	13
60 to 80	7
80 to 100	1
100 to 120	3
120 to 140	2
140 to 160	2