Weather Records on 30 November 1997

987 weather records were set or tied worldwide on 30 November 1997. Highest significance: Mapumulo (Tnk), ZA.

Key Facts for 30 November 1997

On 30 November 1997, 987 weather records were set or tied at long-record stations worldwide.
434 were record highs and 102 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 38 monthly and 948 daily.
Mapumulo (Tnk) set a daily record precipitation of 100.0 mm (3.9 in) on 30 November 1997.
Across 158 earlier years (1797 to 2025) the same calendar date averaged 485 records.

Record Map

987 stations

987 station records on 30 November 1997 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 November 1997: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mapumulo (Tnk)	South Africa	Record daily precipitation	100.0 mm (3.9 in)	65 of 100 (Major)
Plaisance (Mauritiu	Mauritius	Record daily precipitation	258.1 mm (10.2 in)	61 of 100 (Major)
Blanca 4 NW	United States	Record snow depth	22.9 cm (9.0 in)	61 of 100 (Major)
Henbury	Australia	Record daily precipitation	33.0 mm (1.3 in)	55 of 100 (Notable)
Nebraska City 2NW	United States	Record daily precipitation	58.9 mm (2.3 in)	52 of 100 (Notable)
Seward	United States	Record daily precipitation	40.4 mm (1.6 in)	52 of 100 (Notable)
Lincoln UNIV Pwr Plt	United States	Record daily precipitation	53.1 mm (2.1 in)	52 of 100 (Notable)
Clayton	United States	Record daily precipitation	116.8 mm (4.6 in)	50 of 100 (Notable)
Boonville 1S	United States	Record daily precipitation	50.0 mm (2.0 in)	49 of 100 (Notable)
Assarai-Montante	Brazil	Record daily precipitation	83.0 mm (3.3 in)	48 of 100 (Notable)
El Tecomate	Mexico	Record high maximum temperature	40.0 C (104.0 F)	48 of 100 (Notable)
Milstead	United States	Record daily precipitation	57.7 mm (2.3 in)	48 of 100 (Notable)
Boys Town	United States	Record daily precipitation	42.4 mm (1.7 in)	47 of 100 (Notable)
Crete 4ESE	United States	Record snow depth	25.4 cm (10.0 in)	47 of 100 (Notable)
San Francisco	Mexico	Record daily precipitation	32.3 mm (1.3 in)	46 of 100 (Notable)
Hlobane	South Africa	Record daily precipitation	68.6 mm (2.7 in)	46 of 100 (Notable)
Preston	United States	Record daily precipitation	84.1 mm (3.3 in)	46 of 100 (Notable)
Matanuska Exp Farm	United States	Record daily precipitation	25.4 mm (1.0 in)	45 of 100 (Notable)
Mahlabatini (Mag)	South Africa	Record daily precipitation	87.0 mm (3.4 in)	44 of 100 (Notable)
Sonnblick	Austria	Record daily precipitation	54.2 mm (2.1 in)	43 of 100 (Notable)
Wetumpka	United States	Record daily precipitation	40.1 mm (1.6 in)	43 of 100 (Notable)
Friend 3E	United States	Record daily precipitation	54.6 mm (2.1 in)	43 of 100 (Notable)
Barkly Downs	Australia	Record daily precipitation	40.0 mm (1.6 in)	42 of 100 (Notable)
New Rvr McAf	United States	Record daily precipitation	79.0 mm (3.1 in)	42 of 100 (Notable)
Grootvlei (Pol)	South Africa	Record daily precipitation	44.0 mm (1.7 in)	41 of 100 (Notable)
Brundidge	United States	Record daily precipitation	103.4 mm (4.1 in)	41 of 100 (Notable)
Calera	United States	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Clarinda	United States	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Hastings	United States	Record high minimum temperature	5.0 C (41.0 F)	41 of 100 (Notable)
Carrollton	United States	Record high minimum temperature	6.1 C (43.0 F)	41 of 100 (Notable)
Santa Maria de Itabira	Brazil	Record daily precipitation	88.4 mm (3.5 in)	40 of 100 (Notable)
Waterloo	United States	Record daily precipitation	59.7 mm (2.4 in)	40 of 100 (Notable)
Betanga	Australia	Record daily precipitation	25.0 mm (1.0 in)	39 of 100 (Notable)
Billingsley	United States	Record daily precipitation	55.9 mm (2.2 in)	39 of 100 (Notable)
Camp Hill 2NW	United States	Record daily precipitation	29.5 mm (1.2 in)	39 of 100 (Notable)
Greenville	United States	Record daily precipitation	51.6 mm (2.0 in)	39 of 100 (Notable)
Selma	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Troy	United States	Record daily precipitation	80.0 mm (3.1 in)	39 of 100 (Notable)
Olathe 3E	United States	Record daily precipitation	28.7 mm (1.1 in)	39 of 100 (Notable)
Buras	United States	Record daily precipitation	81.3 mm (3.2 in)	39 of 100 (Notable)
David City 4E	United States	Record daily precipitation	26.4 mm (1.0 in)	39 of 100 (Notable)
Firth	United States	Record daily precipitation	66.0 mm (2.6 in)	39 of 100 (Notable)
Hambantota	Sri Lanka	Record high minimum temperature	25.2 C (77.4 F)	38 of 100 (Notable)
Man	Cote D'Ivoire	Record daily precipitation	26.9 mm (1.1 in)	38 of 100 (Notable)
Walsenburg 1 NW	United States	Record snow depth	50.8 cm (20.0 in)	38 of 100 (Notable)
Greenfield	United States	Record daily precipitation	28.2 mm (1.1 in)	38 of 100 (Notable)
Clinton	United States	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)
Lexington	United States	Record high minimum temperature	11.1 C (52.0 F)	38 of 100 (Notable)
Mucuri	Brazil	Record daily precipitation	83.2 mm (3.3 in)	37 of 100 (Notable)
Ferros	Brazil	Record daily precipitation	59.6 mm (2.3 in)	37 of 100 (Notable)
Audubon	United States	Record daily precipitation	33.5 mm (1.3 in)	37 of 100 (Notable)
Grant City	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)
York	United States	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Elkhorn	United States	Record high minimum temperature	7.8 C (46.0 F)	37 of 100 (Notable)
Nashville Intl AP	United States	Record daily precipitation	106.7 mm (4.2 in)	37 of 100 (Notable)
Gunnedah Pool	Australia	Record high minimum temperature	23.6 C (74.5 F)	36 of 100 (Notable)
Abbeville	United States	Record daily precipitation	99.1 mm (3.9 in)	36 of 100 (Notable)
Mt Vernon	United States	Record daily precipitation	74.9 mm (2.9 in)	36 of 100 (Notable)
Baixo Guandu	Brazil	Record daily precipitation	54.2 mm (2.1 in)	35 of 100 (Notable)
Escarcega (Smn)	Mexico	Record daily precipitation	32.0 mm (1.3 in)	35 of 100 (Notable)

Counts by Type and Timescale

987 records

Records set or tied on 30 November 1997 by type: Highest daily maximum 118, Lowest daily maximum 40, Highest daily minimum 316, Lowest daily minimum 62, Heaviest daily rainfall 428, Heaviest daily snowfall 4, Deepest snow cover 19.

Records on 30 November 1997 by type
Record type	Records
Highest daily maximum	118
Lowest daily maximum	40
Highest daily minimum	316
Lowest daily minimum	62
Heaviest daily rainfall	428
Heaviest daily snowfall	4
Deepest snow cover	19

Records on 30 November 1997 by timescale: all-time 1, monthly 38, daily 948.

How Much Records Were Beaten By

825 broken records

Margins by which the 825 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

30 November 1997

Top 20 records on 30 November 1997 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 November 1997	Mapumulo (Tnk), ZA	daily rain	100.0 mm (3.9 in)	59.9 mm (2.4 in)	60 years	65 of 100 (Major)
30 November 1997	Plaisance (Mauritiu, MU	monthly rain	258.1 mm (10.2 in)	107.2 mm (4.2 in)	25 years	61 of 100 (Major)
30 November 1997	Blanca 4 NW, US	daily snow depth	22.9 cm (9.0 in)	15.3 cm (6.0 in)	88 years	61 of 100 (Major)
30 November 1997	Henbury, AU	daily rain	33.0 mm (1.3 in)	16.7 mm (0.7 in)	79 years	55 of 100 (Notable)
30 November 1997	Nebraska City 2NW, US	daily rain	58.9 mm (2.3 in)	41.6 mm (1.6 in)	22 years	52 of 100 (Notable)
30 November 1997	Seward, US	daily rain	40.4 mm (1.6 in)	18.3 mm (0.7 in)	84 years	52 of 100 (Notable)
30 November 1997	Lincoln UNIV Pwr Plt, US	daily rain	53.1 mm (2.1 in)	18.6 mm (0.7 in)	84 years	52 of 100 (Notable)
30 November 1997	Clayton, US	daily rain	116.8 mm (4.6 in)	82.5 mm (3.2 in)	12 years	50 of 100 (Notable)
30 November 1997	Boonville 1S, US	daily rain	50.0 mm (2.0 in)	25.4 mm (1.0 in)	68 years	49 of 100 (Notable)
30 November 1997	Assarai-Montante, BR	daily rain	83.0 mm (3.3 in)	50.2 mm (2.0 in)	40 years	48 of 100 (Notable)
30 November 1997	El Tecomate, MX	daily high max	40.0 C (104.0 F)	8.3 C (14.9 F)	48 years	48 of 100 (Notable)
30 November 1997	Milstead, US	daily rain	57.7 mm (2.3 in)	30.3 mm (1.2 in)	74 years	48 of 100 (Notable)
30 November 1997	Boys Town, US	daily rain	42.4 mm (1.7 in)	32.2 mm (1.3 in)	16 years	47 of 100 (Notable)
30 November 1997	Crete 4ESE, US	daily snow depth	25.4 cm (10.0 in)	12.7 cm (5.0 in)	44 years	47 of 100 (Notable)
30 November 1997	San Francisco, MX	daily rain	32.3 mm (1.3 in)	32.0 mm (1.3 in)	7 years	46 of 100 (Notable)
30 November 1997	Hlobane, ZA	daily rain	68.6 mm (2.7 in)	25.9 mm (1.0 in)	59 years	46 of 100 (Notable)
30 November 1997	Preston, US	daily rain	84.1 mm (3.3 in)	47.8 mm (1.9 in)	40 years	46 of 100 (Notable)
30 November 1997	Matanuska Exp Farm, US	daily rain	25.4 mm (1.0 in)	14.7 mm (0.6 in)	20 years	45 of 100 (Notable)
30 November 1997	Mahlabatini (Mag), ZA	daily rain	87.0 mm (3.4 in)	33.7 mm (1.3 in)	50 years	44 of 100 (Notable)
30 November 1997	Sonnblick, AT	monthly rain	54.2 mm (2.1 in)	5.0 mm (0.20 in)	62 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

1797 to 1997

Records set or tied on this calendar date in each year from 1797 to 1997. 1997 had 987 records.

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

Records on 11-30 in each year
Year	Records
1797	1
1799	2
1807	2
1815	2
1817	1
1821	1
1827	2
1836	1
1840	1
1846	1
1849	2
1866	1
1867	1
1871	2
1875	7
1876	2
1879	2
1881	1
1885	7
1886	1
1887	2
1888	1
1889	3
1890	2
1891	2
1892	2
1893	3
1894	1
1895	7
1896	5
1897	5
1898	1
1899	7
1900	4
1901	8
1902	7
1903	22
1904	6
1905	16
1906	21
1907	6
1908	51
1909	20
1910	22
1911	22
1912	19
1913	54
1914	68
1915	37
1916	64
1917	26
1918	32
1919	87
1920	138
1921	42
1922	46
1923	144
1924	95
1925	102
1926	84
1927	600
1928	187
1929	883
1930	185
1931	375
1932	372
1933	1,006
1934	1,282
1935	84
1936	186
1937	375
1938	165
1939	321
1940	330
1941	298
1942	218
1943	238
1944	422
1945	147
1946	343
1947	544
1948	332
1949	323
1950	382
1951	348
1952	829
1953	307
1954	470
1955	576
1956	304
1957	226
1958	676
1959	339
1960	219
1961	412
1962	802
1963	566
1964	1,042
1965	309
1966	730
1967	802
1968	516
1969	625
1970	995
1971	501
1972	414
1973	635
1974	912
1975	2,018
1976	1,789
1977	935
1978	761
1979	837
1980	697
1981	1,361
1982	1,142
1983	1,137
1984	571
1985	2,887
1986	798
1987	913
1988	686
1989	781
1990	483
1991	2,104
1992	676
1993	756
1994	762
1995	1,472
1996	1,054
1997	987
1998	2,289
1999	1,170
2000	962
2001	1,431
2002	862
2003	634
2004	1,344
2005	883
2006	2,656
2007	739
2008	855
2009	951
2010	1,915
2011	1,108
2012	1,059
2013	505
2014	822
2015	880
2016	634
2017	307
2018	493
2019	1,060
2020	323
2021	1,049
2022	559
2023	583
2024	672
2025	858

Download the Data

Data for records on 1997-11-30: 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	807
50 to 100	13
100 to 150	3
150 to 200	1
200 to 250	0
250 to 300	0
300 to 350	1