Weather Records on 30 September 1983

1,102 weather records were set or tied worldwide on 30 September 1983. Highest significance: Keanae 346, US.

Key Facts for 30 September 1983

On 30 September 1983, 1,102 weather records were set or tied at long-record stations worldwide.
224 were record highs and 330 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 75 monthly and 1,025 daily.
Keanae 346 set a monthly record daily precipitation of 401.3 mm (15.8 in) on 30 September 1983.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 435 records.

Record Map

1,102 stations

1,102 station records on 30 September 1983 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 1983: highest significance records shown on the map
Station	Country	Type	Value	Significance
Keanae 346	United States	Record daily precipitation	401.3 mm (15.8 in)	78 of 100 (Major)
Ellendale	United States	Record daily precipitation	50.8 mm (2.0 in)	68 of 100 (Major)
Weyburn	Canada	Record daily snowfall	18.0 cm (7.1 in)	67 of 100 (Major)
Newhall S Fc32Ce	United States	Record daily precipitation	29.0 mm (1.1 in)	66 of 100 (Major)
Willcox	United States	Record daily precipitation	39.9 mm (1.6 in)	65 of 100 (Major)
Downey Fire Dept. Fc107C	United States	Record daily precipitation	35.3 mm (1.4 in)	64 of 100 (Major)
Glendora Fc 287B	United States	Record daily precipitation	34.3 mm (1.4 in)	64 of 100 (Major)
Los Banos	United States	Record daily precipitation	57.2 mm (2.3 in)	63 of 100 (Major)
Huetamo	Mexico	Record daily precipitation	100.8 mm (4.0 in)	60 of 100 (Major)
Big Sur STN	United States	Record daily precipitation	66.0 mm (2.6 in)	59 of 100 (Notable)
Clifton	United States	Record daily precipitation	62.2 mm (2.4 in)	58 of 100 (Notable)
Narrabri West Post Office	Australia	Record daily precipitation	39.8 mm (1.6 in)	57 of 100 (Notable)
Rucker Canyon	United States	Record daily precipitation	33.0 mm (1.3 in)	55 of 100 (Notable)
Choteau	United States	Record daily snowfall	10.2 cm (4.0 in)	55 of 100 (Notable)
Wee Waa (Pendennis)	Australia	Record daily precipitation	35.0 mm (1.4 in)	54 of 100 (Notable)
Flagstaff AP	United States	Record daily precipitation	44.5 mm (1.8 in)	54 of 100 (Notable)
Piranga	Brazil	Record daily precipitation	48.0 mm (1.9 in)	52 of 100 (Notable)
Nenastnaja	Russia	Record daily precipitation	47.5 mm (1.9 in)	51 of 100 (Notable)
Childs	United States	Record daily precipitation	96.5 mm (3.8 in)	49 of 100 (Notable)
Pasadena	United States	Record daily precipitation	40.9 mm (1.6 in)	49 of 100 (Notable)
Santa Cruz	United States	Record daily precipitation	48.5 mm (1.9 in)	49 of 100 (Notable)
Altadena	United States	Record daily precipitation	44.5 mm (1.8 in)	48 of 100 (Notable)
Prescott Love Fld	United States	Record daily precipitation	37.3 mm (1.5 in)	48 of 100 (Notable)
Narrabri Bowling Club	Australia	Record daily precipitation	33.0 mm (1.3 in)	47 of 100 (Notable)
Redington	United States	Record daily precipitation	50.0 mm (2.0 in)	47 of 100 (Notable)
Pacoima Dam Fc33A-E	United States	Record daily precipitation	41.1 mm (1.6 in)	47 of 100 (Notable)
San Gabriel Canyon Ph	United States	Record daily precipitation	56.6 mm (2.2 in)	47 of 100 (Notable)
Helmet Peak Ruby Star	United States	Record daily precipitation	58.4 mm (2.3 in)	46 of 100 (Notable)
Seligman	United States	Record daily precipitation	31.2 mm (1.2 in)	46 of 100 (Notable)
La Crescenta Fc251 C	United States	Record daily precipitation	36.3 mm (1.4 in)	46 of 100 (Notable)
Eustis 2 NW	United States	Record daily precipitation	57.4 mm (2.3 in)	46 of 100 (Notable)
Carson City	United States	Record daily precipitation	25.4 mm (1.0 in)	46 of 100 (Notable)
Blanding	United States	Record daily precipitation	36.3 mm (1.4 in)	46 of 100 (Notable)
Burbank Valley Pump Plt	United States	Record daily precipitation	27.9 mm (1.1 in)	45 of 100 (Notable)
Dry Canyon Rsvr	United States	Record daily precipitation	27.4 mm (1.1 in)	45 of 100 (Notable)
Alton	United States	Record daily precipitation	45.0 mm (1.8 in)	45 of 100 (Notable)
Colgate Powerhouse	United States	Record daily precipitation	53.8 mm (2.1 in)	44 of 100 (Notable)
Livermore	United States	Record daily precipitation	25.9 mm (1.0 in)	44 of 100 (Notable)
Lowman	United States	Record daily precipitation	29.5 mm (1.2 in)	44 of 100 (Notable)
Santa Barbara Muni AP	United States	Record daily precipitation	76.5 mm (3.0 in)	44 of 100 (Notable)
Avalon Pleasure Pier	United States	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Conrad	United States	Record daily snowfall	7.6 cm (3.0 in)	43 of 100 (Notable)
Hebgen Dam	United States	Record daily precipitation	27.9 mm (1.1 in)	43 of 100 (Notable)
Yellow Grass	Canada	Record daily snowfall	7.0 cm (2.8 in)	42 of 100 (Notable)
Combolcha	Ethiopia	Record high minimum temperature	22.0 C (71.6 F)	42 of 100 (Notable)
Blue	United States	Record daily precipitation	67.8 mm (2.7 in)	42 of 100 (Notable)
Gisela	United States	Record daily precipitation	57.4 mm (2.3 in)	42 of 100 (Notable)
Spreckels Hwy Brg	United States	Record daily precipitation	29.2 mm (1.1 in)	42 of 100 (Notable)
Los Angeles Downtown/Usc	United States	Record daily precipitation	40.1 mm (1.6 in)	42 of 100 (Notable)
Big Tujunga Dam Fc46	United States	Record daily precipitation	29.2 mm (1.1 in)	41 of 100 (Notable)
N Fk Rs	United States	Record daily precipitation	42.2 mm (1.7 in)	41 of 100 (Notable)
San Gabriel Dam Fc425B-E	United States	Record daily precipitation	57.7 mm (2.3 in)	41 of 100 (Notable)
Luna Rs	United States	Record daily precipitation	54.4 mm (2.1 in)	41 of 100 (Notable)
Monticello 2E	United States	Record daily precipitation	44.2 mm (1.7 in)	41 of 100 (Notable)
Merriwa (Gummun Place)	Australia	Record daily precipitation	32.4 mm (1.3 in)	40 of 100 (Notable)
Ear Falls	Canada	Record daily precipitation	32.6 mm (1.3 in)	40 of 100 (Notable)
Miami	United States	Record low maximum temperature	16.7 C (62.1 F)	40 of 100 (Notable)
Tombstone	United States	Record low maximum temperature	19.4 C (66.9 F)	40 of 100 (Notable)
Turlock #2	United States	Record daily precipitation	40.9 mm (1.6 in)	40 of 100 (Notable)
Luverne	United States	Record high minimum temperature	16.7 C (62.1 F)	40 of 100 (Notable)

Counts by Type and Timescale

1,102 records

Records set or tied on 30 September 1983 by type: Highest daily maximum 62, Lowest daily maximum 215, Highest daily minimum 162, Lowest daily minimum 115, Heaviest daily rainfall 506, Heaviest daily snowfall 32, Deepest snow cover 10.

Records on 30 September 1983 by type
Record type	Records
Highest daily maximum	62
Lowest daily maximum	215
Highest daily minimum	162
Lowest daily minimum	115
Heaviest daily rainfall	506
Heaviest daily snowfall	32
Deepest snow cover	10

Records on 30 September 1983 by timescale: all-time 2, monthly 75, daily 1,025.

How Much Records Were Beaten By

926 broken records

Margins by which the 926 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 176.5. Ties are not counted.

Top 20 by Significance

30 September 1983

Top 20 records on 30 September 1983 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1983	Keanae 346, US	monthly rain	401.3 mm (15.8 in)	176.5 mm (6.9 in)	72 years	78 of 100 (Major)
30 September 1983	Ellendale, US	daily rain	50.8 mm (2.0 in)	41.1 mm (1.6 in)	80 years	68 of 100 (Major)
30 September 1983	Weyburn, CA	monthly snowfall	18.0 cm (7.1 in)	12.9 cm (5.1 in)	82 years	67 of 100 (Major)
30 September 1983	Newhall S Fc32Ce, US	daily rain	29.0 mm (1.1 in)	29.0 mm (1.1 in)	76 years	66 of 100 (Major)
30 September 1983	Willcox, US	daily rain	39.9 mm (1.6 in)	28.5 mm (1.1 in)	70 years	65 of 100 (Major)
30 September 1983	Downey Fire Dept. Fc107C, US	daily rain	35.3 mm (1.4 in)	35.3 mm (1.4 in)	76 years	64 of 100 (Major)
30 September 1983	Glendora Fc 287B, US	daily rain	34.3 mm (1.4 in)	33.0 mm (1.3 in)	84 years	64 of 100 (Major)
30 September 1983	Los Banos, US	monthly rain	57.2 mm (2.3 in)	27.5 mm (1.1 in)	24 years	63 of 100 (Major)
30 September 1983	Huetamo, MX	daily rain	100.8 mm (4.0 in)	66.0 mm (2.6 in)	48 years	60 of 100 (Major)
30 September 1983	Big Sur STN, US	daily rain	66.0 mm (2.6 in)	38.8 mm (1.5 in)	64 years	59 of 100 (Notable)
30 September 1983	Clifton, US	daily rain	62.2 mm (2.4 in)	43.1 mm (1.7 in)	32 years	58 of 100 (Notable)
30 September 1983	Narrabri West Post Office, AU	daily rain	39.8 mm (1.6 in)	22.0 mm (0.9 in)	89 years	57 of 100 (Notable)
30 September 1983	Rucker Canyon, US	daily rain	33.0 mm (1.3 in)	31.0 mm (1.2 in)	61 years	55 of 100 (Notable)
30 September 1983	Choteau, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	89 years	55 of 100 (Notable)
30 September 1983	Wee Waa (Pendennis), AU	daily rain	35.0 mm (1.4 in)	20.8 mm (0.8 in)	76 years	54 of 100 (Notable)
30 September 1983	Flagstaff AP, US	daily rain	44.5 mm (1.8 in)	33.3 mm (1.3 in)	42 years	54 of 100 (Notable)
30 September 1983	Piranga, BR	daily rain	48.0 mm (1.9 in)	35.8 mm (1.4 in)	34 years	52 of 100 (Notable)
30 September 1983	Nenastnaja, RU	daily rain	47.5 mm (1.9 in)	29.3 mm (1.2 in)	40 years	51 of 100 (Notable)
30 September 1983	Childs, US	daily rain	96.5 mm (3.8 in)	71.1 mm (2.8 in)	12 years	49 of 100 (Notable)
30 September 1983	Pasadena, US	daily rain	40.9 mm (1.6 in)	22.4 mm (0.9 in)	88 years	49 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

1806 to 1983

Records set or tied on this calendar date in each year from 1806 to 1983. 1983 had 1,102 records.

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

Records on 09-30 in each year
Year	Records
1806	1
1813	1
1817	1
1819	2
1834	1
1841	1
1842	1
1847	1
1853	1
1854	1
1855	1
1861	1
1862	1
1866	1
1868	2
1869	3
1870	1
1874	1
1877	1
1878	1
1881	5
1883	2
1885	1
1886	3
1887	1
1888	4
1889	1
1892	2
1893	3
1894	8
1895	5
1896	2
1897	3
1898	3
1899	12
1900	4
1901	11
1902	7
1903	9
1904	14
1905	25
1906	14
1907	16
1908	18
1909	10
1910	5
1911	47
1912	47
1913	10
1914	33
1915	84
1916	209
1917	19
1918	45
1919	28
1920	71
1921	61
1922	71
1923	183
1924	243
1925	211
1926	194
1927	486
1928	560
1929	181
1930	110
1931	225
1932	363
1933	437
1934	398
1935	209
1936	432
1937	417
1938	428
1939	371
1940	316
1941	482
1942	405
1943	404
1944	369
1945	889
1946	320
1947	433
1948	267
1949	366
1950	731
1951	597
1952	504
1953	1,136
1954	1,059
1955	406
1956	350
1957	663
1958	442
1959	1,159
1960	161
1961	618
1962	202
1963	818
1964	332
1965	459
1966	592
1967	859
1968	449
1969	465
1970	334
1971	1,359
1972	676
1973	407
1974	742
1975	686
1976	775
1977	870
1978	399
1979	479
1980	832
1981	688
1982	806
1983	1,102
1984	1,267
1985	1,892
1986	1,805
1987	649
1988	453
1989	713
1990	665
1991	949
1992	980
1993	988
1994	816
1995	1,061
1996	1,396
1997	729
1998	1,206
1999	1,144
2000	887
2001	699
2002	677
2003	1,079
2004	573
2005	761
2006	617
2007	841
2008	585
2009	826
2010	1,059
2011	1,258
2012	637
2013	634
2014	529
2015	997
2016	746
2017	404
2018	717
2019	2,192
2020	554
2021	823
2022	563
2023	1,012
2024	948
2025	559
2026	529

Download the Data

Data for records on 1983-09-30: 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 25	848
25 to 50	56
50 to 75	10
75 to 100	9
100 to 125	1
125 to 150	1
150 to 175	0
175 to 200	1