Weather Records on 23 October 1991

1,232 weather records were set or tied worldwide on 23 October 1991. Highest significance: Yellowstone Park Mammoth, US.

Key Facts for 23 October 1991

On 23 October 1991, 1,232 weather records were set or tied at long-record stations worldwide.
650 were record highs and 196 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 31 monthly and 1,201 daily.
Yellowstone Park Mammoth set a monthly record daily snowfall of 30.5 cm (12.0 in) on 23 October 1991.
Across 160 earlier years (1795 to 2025) the same calendar date averaged 458 records.

Record Map

1,232 stations

1,232 station records on 23 October 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 October 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yellowstone Park Mammoth	United States	Record daily snowfall	30.5 cm (12.0 in)	66 of 100 (Major)
Pettibone	United States	Record daily snowfall	12.7 cm (5.0 in)	63 of 100 (Major)
Reeder	United States	Record daily snowfall	30.5 cm (12.0 in)	61 of 100 (Major)
New England	United States	Record daily snowfall	15.2 cm (6.0 in)	60 of 100 (Major)
Britstown (Pol)	South Africa	Record daily precipitation	32.5 mm (1.3 in)	59 of 100 (Notable)
McKinley Park	United States	Record daily precipitation	26.2 mm (1.0 in)	59 of 100 (Notable)
Arzamas	Russia	Record daily precipitation	34.4 mm (1.4 in)	58 of 100 (Notable)
Border 3 N	United States	Record daily precipitation	28.4 mm (1.1 in)	58 of 100 (Notable)
La Estanzuela (Eele)	Uruguay	Record daily precipitation	98.0 mm (3.9 in)	57 of 100 (Notable)
Logan Utah St UNIV	United States	Record daily precipitation	31.2 mm (1.2 in)	56 of 100 (Notable)
Yellowstone Park Mammoth	United States	Record snow depth	30.5 cm (12.0 in)	53 of 100 (Notable)
Verkykerskop (Pol)	South Africa	Record daily precipitation	52.0 mm (2.0 in)	52 of 100 (Notable)
Mystic Lake	United States	Record daily precipitation	29.0 mm (1.1 in)	51 of 100 (Notable)
West Yellowstone	United States	Record daily snowfall	34.8 cm (13.7 in)	51 of 100 (Notable)
Temnikov	Russia	Record daily precipitation	29.9 mm (1.2 in)	50 of 100 (Notable)
Knobs 4 SW	United States	Record daily snowfall	22.9 cm (9.0 in)	50 of 100 (Notable)
Mc Henry 3W	United States	Record snow depth	15.2 cm (6.0 in)	49 of 100 (Notable)
Noupoort	South Africa	Record daily precipitation	29.5 mm (1.2 in)	48 of 100 (Notable)
Carson	United States	Record daily snowfall	15.2 cm (6.0 in)	48 of 100 (Notable)
Pretty Rock	United States	Record snow depth	15.2 cm (6.0 in)	48 of 100 (Notable)
Coalville	United States	Record daily snowfall	5.1 cm (2.0 in)	48 of 100 (Notable)
Micurinsk	Russia	Record daily precipitation	34.4 mm (1.4 in)	47 of 100 (Notable)
Amidon	United States	Record daily snowfall	7.6 cm (3.0 in)	47 of 100 (Notable)
Ogden Pioneer Ph	United States	Record daily precipitation	39.4 mm (1.6 in)	47 of 100 (Notable)
Posevnaja	Russia	Record daily precipitation	26.9 mm (1.1 in)	45 of 100 (Notable)
Bellrock	South Africa	Record daily precipitation	35.5 mm (1.4 in)	45 of 100 (Notable)
Krasnoslobodsk	Russia	Record daily precipitation	25.2 mm (1.0 in)	44 of 100 (Notable)
Bowman	United States	Record daily snowfall	15.2 cm (6.0 in)	44 of 100 (Notable)
Bezenchuk	Russia	Record high maximum temperature	21.9 C (71.4 F)	43 of 100 (Notable)
Togul	Russia	Record daily precipitation	30.7 mm (1.2 in)	43 of 100 (Notable)
Reeder	United States	Record snow depth	30.5 cm (12.0 in)	43 of 100 (Notable)
Mason City Muni AP	United States	Record daily precipitation	58.2 mm (2.3 in)	43 of 100 (Notable)
Bismarck	United States	Record daily snowfall	19.3 cm (7.6 in)	43 of 100 (Notable)
Oktjabrskij-Gorodok	Russia	Record high minimum temperature	10.5 C (50.9 F)	42 of 100 (Notable)
Mio Hydro Plt	United States	Record high minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Mc Henry 3W	United States	Record daily snowfall	15.5 cm (6.1 in)	42 of 100 (Notable)
Holton	United States	Record high maximum temperature	31.7 C (89.1 F)	41 of 100 (Notable)
Hettinger	United States	Record snow depth	15.2 cm (6.0 in)	41 of 100 (Notable)
Mc Ville	United States	Record daily snowfall	11.4 cm (4.5 in)	41 of 100 (Notable)
Ralph 1 N	United States	Record daily snowfall	11.4 cm (4.5 in)	41 of 100 (Notable)
Ottawa	United States	Record high minimum temperature	20.0 C (68.0 F)	40 of 100 (Notable)
Wibaux 2 E	United States	Record daily snowfall	7.6 cm (3.0 in)	40 of 100 (Notable)
Dubois Exp STN	United States	Record daily snowfall	12.7 cm (5.0 in)	39 of 100 (Notable)
Abilene	United States	Record high maximum temperature	32.2 C (90.0 F)	39 of 100 (Notable)
Olathe 3E	United States	Record high minimum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Windsor	United States	Record high maximum temperature	30.0 C (86.0 F)	39 of 100 (Notable)
Conrad	United States	Record low minimum temperature	-16.7 C (1.9 F)	39 of 100 (Notable)
Cuernavaca (Dge)	Mexico	Record daily precipitation	31.0 mm (1.2 in)	38 of 100 (Notable)
Laingsnek	South Africa	Record daily precipitation	53.0 mm (2.1 in)	38 of 100 (Notable)
Moscow U of I	United States	Record low minimum temperature	-6.7 C (19.9 F)	38 of 100 (Notable)
McPherson	United States	Record high minimum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Oakdale	United States	Record high maximum temperature	30.6 C (87.1 F)	38 of 100 (Notable)
Evanston 1 E	United States	Record daily snowfall	15.2 cm (6.0 in)	38 of 100 (Notable)
Douglas	South Africa	Record daily precipitation	31.5 mm (1.2 in)	37 of 100 (Notable)
Warrenton (Mun)	South Africa	Record daily precipitation	28.5 mm (1.1 in)	37 of 100 (Notable)
Albia 3 NNE	United States	Record high minimum temperature	17.8 C (64.0 F)	37 of 100 (Notable)
Windsor	United States	Record high minimum temperature	17.2 C (63.0 F)	37 of 100 (Notable)
Mystic Lake	United States	Record daily snowfall	40.6 cm (16.0 in)	37 of 100 (Notable)
Hettinger	United States	Record daily snowfall	15.2 cm (6.0 in)	37 of 100 (Notable)
Washburn	United States	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,232 records

Records set or tied on 23 October 1991 by type: Highest daily maximum 266, Lowest daily maximum 107, Highest daily minimum 384, Lowest daily minimum 89, Heaviest daily rainfall 253, Heaviest daily snowfall 78, Deepest snow cover 55.

Records on 23 October 1991 by type
Record type	Records
Highest daily maximum	266
Lowest daily maximum	107
Highest daily minimum	384
Lowest daily minimum	89
Heaviest daily rainfall	253
Heaviest daily snowfall	78
Deepest snow cover	55

Records on 23 October 1991 by timescale: all-time 0, monthly 31, daily 1,201.

How Much Records Were Beaten By

965 broken records

Margins by which the 965 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 228.0. Ties are not counted.

Top 20 by Significance

23 October 1991

Top 20 records on 23 October 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 October 1991	Yellowstone Park Mammoth, US	monthly snowfall	30.5 cm (12.0 in)	12.7 cm (5.0 in)	42 years	66 of 100 (Major)
23 October 1991	Pettibone, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	72 years	63 of 100 (Major)
23 October 1991	Reeder, US	monthly snowfall	30.5 cm (12.0 in)	17.8 cm (7.0 in)	41 years	61 of 100 (Major)
23 October 1991	New England, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	72 years	60 of 100 (Major)
23 October 1991	Britstown (Pol), ZA	daily rain	32.5 mm (1.3 in)	25.6 mm (1.0 in)	80 years	59 of 100 (Notable)
23 October 1991	McKinley Park, US	daily rain	26.2 mm (1.0 in)	17.3 mm (0.7 in)	45 years	59 of 100 (Notable)
23 October 1991	Arzamas, RU	daily rain	34.4 mm (1.4 in)	24.6 mm (1.0 in)	44 years	58 of 100 (Notable)
23 October 1991	Border 3 N, US	daily rain	28.4 mm (1.1 in)	16.0 mm (0.6 in)	68 years	58 of 100 (Notable)
23 October 1991	La Estanzuela (Eele), UY	daily rain	98.0 mm (3.9 in)	60.0 mm (2.4 in)	46 years	57 of 100 (Notable)
23 October 1991	Logan Utah St UNIV, US	daily rain	31.2 mm (1.2 in)	16.0 mm (0.6 in)	91 years	56 of 100 (Notable)
23 October 1991	Yellowstone Park Mammoth, US	monthly snow depth	30.5 cm (12.0 in)	10.2 cm (4.0 in)	42 years	53 of 100 (Notable)
23 October 1991	Verkykerskop (Pol), ZA	daily rain	52.0 mm (2.0 in)	26.1 mm (1.0 in)	70 years	52 of 100 (Notable)
23 October 1991	Mystic Lake, US	daily rain	29.0 mm (1.1 in)	18.1 mm (0.7 in)	65 years	51 of 100 (Notable)
23 October 1991	West Yellowstone, US	daily snowfall	34.8 cm (13.7 in)	17.0 cm (6.7 in)	48 years	51 of 100 (Notable)
23 October 1991	Temnikov, RU	daily rain	29.9 mm (1.2 in)	17.9 mm (0.7 in)	32 years	50 of 100 (Notable)
23 October 1991	Knobs 4 SW, US	monthly snowfall	22.9 cm (9.0 in)	12.7 cm (5.0 in)	39 years	50 of 100 (Notable)
23 October 1991	Mc Henry 3W, US	daily snow depth	15.2 cm (6.0 in)	10.1 cm (4.0 in)	72 years	49 of 100 (Notable)
23 October 1991	Noupoort, ZA	daily rain	29.5 mm (1.2 in)	21.4 mm (0.8 in)	44 years	48 of 100 (Notable)
23 October 1991	Carson, US	daily snowfall	15.2 cm (6.0 in)	7.6 cm (3.0 in)	72 years	48 of 100 (Notable)
23 October 1991	Pretty Rock, US	daily snow depth	15.2 cm (6.0 in)	12.7 cm (5.0 in)	40 years	48 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

1795 to 1991

Records set or tied on this calendar date in each year from 1795 to 1991. 1991 had 1,232 records.

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

Records on 10-23 in each year
Year	Records
1795	1
1802	2
1843	1
1845	1
1850	1
1851	2
1855	1
1859	2
1861	1
1863	1
1865	2
1866	1
1869	3
1871	2
1872	1
1873	2
1876	2
1878	1
1880	7
1881	2
1882	1
1883	1
1885	2
1888	1
1889	2
1890	2
1891	8
1892	3
1893	3
1894	5
1895	4
1896	2
1897	3
1898	5
1899	4
1900	8
1901	7
1902	7
1903	10
1904	7
1905	15
1906	17
1907	5
1908	19
1909	12
1910	6
1911	40
1912	50
1913	38
1914	9
1915	167
1916	290
1917	62
1918	12
1919	42
1920	262
1921	58
1922	38
1923	165
1924	160
1925	191
1926	131
1927	266
1928	120
1929	352
1930	310
1931	353
1932	310
1933	241
1934	333
1935	519
1936	490
1937	816
1938	403
1939	717
1940	304
1941	499
1942	306
1943	446
1944	283
1945	533
1946	258
1947	631
1948	251
1949	432
1950	507
1951	626
1952	432
1953	373
1954	317
1955	266
1956	587
1957	1,266
1958	255
1959	682
1960	341
1961	329
1962	141
1963	1,297
1964	264
1965	330
1966	625
1967	297
1968	175
1969	1,200
1970	617
1971	705
1972	601
1973	712
1974	653
1975	1,028
1976	879
1977	578
1978	570
1979	1,094
1980	584
1981	1,502
1982	1,071
1983	853
1984	1,261
1985	846
1986	968
1987	694
1988	619
1989	1,363
1990	954
1991	1,232
1992	1,176
1993	670
1994	558
1995	1,471
1996	1,396
1997	1,172
1998	1,221
1999	1,011
2000	1,275
2001	1,091
2002	1,868
2003	1,952
2004	1,224
2005	679
2006	1,976
2007	1,673
2008	993
2009	838
2010	683
2011	701
2012	1,017
2013	754
2014	755
2015	760
2016	460
2017	603
2018	322
2019	459
2020	1,777
2021	298
2022	1,342
2023	544
2024	674
2025	343

Download the Data

Data for records on 1991-10-23: 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).

Histogram of margins by which records were beaten on 23 October 1991
Margin	Records
0 to 50	895
50 to 100	43
100 to 150	22
150 to 200	3
200 to 250	2