Weather Records on 18 October 1991

999 weather records were set or tied worldwide on 18 October 1991. Highest significance: Eldorado, BR.

Key Facts for 18 October 1991

On 18 October 1991, 999 weather records were set or tied at long-record stations worldwide.
557 were record highs and 192 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 14 monthly and 985 daily.
Eldorado set a daily record precipitation of 73.7 mm (2.9 in) on 18 October 1991.
Across 167 earlier years (1794 to 2025) the same calendar date averaged 430 records.

Record Map

999 stations

999 station records on 18 October 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 October 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Eldorado	Brazil	Record daily precipitation	73.7 mm (2.9 in)	51 of 100 (Notable)
The Towers	South Africa	Record daily precipitation	26.0 mm (1.0 in)	51 of 100 (Notable)
Veselaja Gorka	Russia	Record daily precipitation	35.4 mm (1.4 in)	50 of 100 (Notable)
Duki	Russia	Record daily precipitation	32.7 mm (1.3 in)	50 of 100 (Notable)
Iguatama	Brazil	Record daily precipitation	72.5 mm (2.9 in)	49 of 100 (Notable)
Ferguson	Australia	Record daily precipitation	37.0 mm (1.5 in)	48 of 100 (Notable)
Jingi Jingi	Australia	Record daily precipitation	57.8 mm (2.3 in)	47 of 100 (Notable)
Hularin	Russia	Record daily precipitation	34.3 mm (1.4 in)	47 of 100 (Notable)
Miriam Vale	Australia	Record daily precipitation	52.4 mm (2.1 in)	45 of 100 (Notable)
Hancock Exp Farm	United States	Record daily snowfall	5.1 cm (2.0 in)	44 of 100 (Notable)
Urmi	Russia	Record daily precipitation	33.3 mm (1.3 in)	43 of 100 (Notable)
Fredericksburg Np	United States	Record low maximum temperature	8.9 C (48.0 F)	43 of 100 (Notable)
Talgai	Australia	Record daily precipitation	49.4 mm (1.9 in)	42 of 100 (Notable)
Fazenda S.Joao Morro Vermelho	Brazil	Record daily precipitation	59.4 mm (2.3 in)	42 of 100 (Notable)
Burukan	Russia	Record daily precipitation	33.4 mm (1.3 in)	42 of 100 (Notable)
Kon-Kolodez	Russia	Record high minimum temperature	12.5 C (54.5 F)	41 of 100 (Notable)
Biser	Russia	Record high minimum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Komsomolsk-Na-Amure	Russia	Record daily precipitation	25.1 mm (1.0 in)	41 of 100 (Notable)
Svappavaara	Sweden	Record daily precipitation	25.2 mm (1.0 in)	41 of 100 (Notable)
Dunollie	Australia	Record daily precipitation	46.0 mm (1.8 in)	40 of 100 (Notable)
Leninskoe	Russia	Record daily precipitation	25.6 mm (1.0 in)	40 of 100 (Notable)
Smidovich	Russia	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Tabl.Mtn Molteno Rsv	South Africa	Record daily precipitation	38.0 mm (1.5 in)	40 of 100 (Notable)
Beulah	United States	Record high maximum temperature	30.0 C (86.0 F)	40 of 100 (Notable)
Beerburrum Forest Station	Australia	Record daily precipitation	26.2 mm (1.0 in)	39 of 100 (Notable)
Gorin	Russia	Record daily precipitation	33.6 mm (1.3 in)	39 of 100 (Notable)
Healy	United States	Record high maximum temperature	33.9 C (93.0 F)	39 of 100 (Notable)
Rochester Intl AP	United States	Record daily snowfall	9.9 cm (3.9 in)	39 of 100 (Notable)
Hebron	United States	Record high maximum temperature	31.1 C (88.0 F)	38 of 100 (Notable)
Kingaroy Prince Street	Australia	Record daily precipitation	32.2 mm (1.3 in)	37 of 100 (Notable)
Mounefontein	Australia	Record daily precipitation	41.6 mm (1.6 in)	37 of 100 (Notable)
Wooroolin Post Office	Australia	Record daily precipitation	35.5 mm (1.4 in)	37 of 100 (Notable)
Glenroy	Australia	Record daily precipitation	44.0 mm (1.7 in)	37 of 100 (Notable)
Ust Tzilma	Russia	Record high minimum temperature	6.9 C (44.4 F)	37 of 100 (Notable)
Skegness	United Kingdom	Record low maximum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
McCall	United States	Record low minimum temperature	-12.8 C (9.0 F)	37 of 100 (Notable)
Monticello 2E	United States	Record high minimum temperature	8.9 C (48.0 F)	37 of 100 (Notable)
Holbrook	United States	Record high maximum temperature	30.6 C (87.1 F)	36 of 100 (Notable)
Bira	Russia	Record daily precipitation	31.3 mm (1.2 in)	35 of 100 (Notable)
Poronajsk	Russia	Record daily precipitation	53.7 mm (2.1 in)	35 of 100 (Notable)
Jerome	United States	Record high minimum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
Hebgen Dam	United States	Record high maximum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Fairbury 7S	United States	Record high maximum temperature	31.1 C (88.0 F)	35 of 100 (Notable)
Hachita 1W	United States	Record high maximum temperature	31.7 C (89.1 F)	35 of 100 (Notable)
Shenkursk	Russia	Record high minimum temperature	7.9 C (46.2 F)	34 of 100 (Routine)
Malmesbury	South Africa	Record daily precipitation	36.5 mm (1.4 in)	34 of 100 (Routine)
Leroy 5 WSW	United States	Record high maximum temperature	32.8 C (91.0 F)	34 of 100 (Routine)
Larned	United States	Record high maximum temperature	33.9 C (93.0 F)	34 of 100 (Routine)
Norton 9SSE	United States	Record high maximum temperature	36.1 C (97.0 F)	34 of 100 (Routine)
Wakeeney	United States	Record high maximum temperature	35.0 C (95.0 F)	34 of 100 (Routine)
Hillsboro	United States	Record high maximum temperature	29.4 C (84.9 F)	34 of 100 (Routine)
Moab	United States	Record high maximum temperature	33.9 C (93.0 F)	34 of 100 (Routine)
Usina Pinhal (Eloy Chaves)	Brazil	Record daily precipitation	44.0 mm (1.7 in)	33 of 100 (Routine)
Gillastig	Sweden	Record daily precipitation	33.5 mm (1.3 in)	33 of 100 (Routine)
Placerville	United States	Record high minimum temperature	17.2 C (63.0 F)	33 of 100 (Routine)
Lamar	United States	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Hamburg	United States	Record daily precipitation	31.5 mm (1.2 in)	33 of 100 (Routine)
Plainview	United States	Record high maximum temperature	32.8 C (91.0 F)	33 of 100 (Routine)
Blanding	United States	Record high maximum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Kamennaja-Step	Russia	Record high minimum temperature	12.4 C (54.3 F)	32 of 100 (Routine)

Counts by Type and Timescale

999 records

Records set or tied on 18 October 1991 by type: Highest daily maximum 394, Lowest daily maximum 77, Highest daily minimum 163, Lowest daily minimum 115, Heaviest daily rainfall 218, Heaviest daily snowfall 20, Deepest snow cover 12.

Records on 18 October 1991 by type
Record type	Records
Highest daily maximum	394
Lowest daily maximum	77
Highest daily minimum	163
Lowest daily minimum	115
Heaviest daily rainfall	218
Heaviest daily snowfall	20
Deepest snow cover	12

Records on 18 October 1991 by timescale: all-time 0, monthly 14, daily 985.

How Much Records Were Beaten By

778 broken records

Margins by which the 778 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.0. Ties are not counted.

Top 20 by Significance

18 October 1991

Top 20 records on 18 October 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 October 1991	Eldorado, BR	daily rain	73.7 mm (2.9 in)	40.7 mm (1.6 in)	29 years	51 of 100 (Notable)
18 October 1991	The Towers, ZA	daily rain	26.0 mm (1.0 in)	11.5 mm (0.5 in)	64 years	51 of 100 (Notable)
18 October 1991	Veselaja Gorka, RU	daily rain	35.4 mm (1.4 in)	30.1 mm (1.2 in)	30 years	50 of 100 (Notable)
18 October 1991	Duki, RU	daily rain	32.7 mm (1.3 in)	28.1 mm (1.1 in)	41 years	50 of 100 (Notable)
18 October 1991	Iguatama, BR	daily rain	72.5 mm (2.9 in)	54.3 mm (2.1 in)	16 years	49 of 100 (Notable)
18 October 1991	Ferguson, AU	daily rain	37.0 mm (1.5 in)	28.6 mm (1.1 in)	14 years	48 of 100 (Notable)
18 October 1991	Jingi Jingi, AU	daily rain	57.8 mm (2.3 in)	30.6 mm (1.2 in)	48 years	47 of 100 (Notable)
18 October 1991	Hularin, RU	daily rain	34.3 mm (1.4 in)	29.3 mm (1.2 in)	10 years	47 of 100 (Notable)
18 October 1991	Miriam Vale, AU	daily rain	52.4 mm (2.1 in)	23.7 mm (0.9 in)	70 years	45 of 100 (Notable)
18 October 1991	Hancock Exp Farm, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	88 years	44 of 100 (Notable)
18 October 1991	Urmi, RU	daily rain	33.3 mm (1.3 in)	19.1 mm (0.8 in)	46 years	43 of 100 (Notable)
18 October 1991	Fredericksburg Np, US	daily low max	8.9 C (48.0 F)	3.9 C (7.0 F)	89 years	43 of 100 (Notable)
18 October 1991	Talgai, AU	daily rain	49.4 mm (1.9 in)	42.6 mm (1.7 in)	16 years	42 of 100 (Notable)
18 October 1991	Fazenda S.Joao Morro Vermelho, BR	daily rain	59.4 mm (2.3 in)	42.2 mm (1.7 in)	28 years	42 of 100 (Notable)
18 October 1991	Burukan, RU	daily rain	33.4 mm (1.3 in)	20.5 mm (0.8 in)	48 years	42 of 100 (Notable)
18 October 1991	Kon-Kolodez, RU	daily high min	12.5 C (54.5 F)	3.2 C (5.8 F)	84 years	41 of 100 (Notable)
18 October 1991	Biser, RU	daily high min	7.2 C (45.0 F)	2.1 C (3.8 F)	95 years	41 of 100 (Notable)
18 October 1991	Komsomolsk-Na-Amure, RU	daily rain	25.1 mm (1.0 in)	17.0 mm (0.7 in)	45 years	41 of 100 (Notable)
18 October 1991	Svappavaara, SE	daily rain	25.2 mm (1.0 in)	12.2 mm (0.5 in)	20 years	41 of 100 (Notable)
18 October 1991	Dunollie, AU	daily rain	46.0 mm (1.8 in)	33.3 mm (1.3 in)	40 years	40 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

1794 to 1991

Records set or tied on this calendar date in each year from 1794 to 1991. 1991 had 999 records.

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

Records on 10-18 in each year
Year	Records
1794	1
1796	1
1799	1
1806	1
1807	1
1810	1
1811	2
1817	1
1832	1
1835	1
1836	1
1843	1
1846	2
1848	1
1849	1
1851	1
1852	1
1859	1
1863	1
1865	2
1866	2
1868	1
1869	1
1871	1
1872	1
1874	4
1876	2
1877	2
1879	3
1881	1
1882	1
1883	2
1887	1
1888	1
1890	4
1892	4
1893	1
1894	3
1895	2
1897	6
1898	5
1899	12
1900	5
1901	5
1902	6
1903	9
1904	12
1905	27
1906	17
1907	11
1908	44
1909	23
1910	50
1911	22
1912	12
1913	26
1914	52
1915	12
1916	64
1917	109
1918	24
1919	31
1920	87
1921	87
1922	59
1923	114
1924	151
1925	153
1926	149
1927	309
1928	316
1929	190
1930	507
1931	350
1932	446
1933	264
1934	222
1935	360
1936	483
1937	671
1938	536
1939	475
1940	532
1941	240
1942	332
1943	844
1944	264
1945	398
1946	355
1947	965
1948	1,128
1949	665
1950	996
1951	325
1952	394
1953	678
1954	621
1955	403
1956	578
1957	220
1958	407
1959	246
1960	612
1961	362
1962	252
1963	492
1964	311
1965	1,066
1966	613
1967	405
1968	737
1969	789
1970	501
1971	1,199
1972	1,581
1973	789
1974	746
1975	779
1976	1,326
1977	533
1978	545
1979	555
1980	1,024
1981	680
1982	654
1983	684
1984	1,331
1985	831
1986	344
1987	518
1988	733
1989	1,196
1990	1,043
1991	999
1992	1,295
1993	1,051
1994	1,296
1995	1,227
1996	795
1997	1,240
1998	1,323
1999	773
2000	823
2001	818
2002	878
2003	1,097
2004	1,156
2005	755
2006	1,328
2007	1,298
2008	531
2009	1,546
2010	634
2011	736
2012	741
2013	430
2014	690
2015	915
2016	1,511
2017	590
2018	759
2019	346
2020	957
2021	387
2022	1,334
2023	693
2024	1,142
2025	367

Download the Data

Data for records on 1991-10-18: 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 10	686
10 to 20	46
20 to 30	25
30 to 40	10
40 to 50	3
50 to 60	5
60 to 70	0
70 to 80	3