Weather Records on 30 September 2011

1,258 weather records were set or tied worldwide on 30 September 2011. Highest significance: Northdown (Hamley), AU.

Key Facts for 30 September 2011

On 30 September 2011, 1,258 weather records were set or tied at long-record stations worldwide.
925 were record highs and 130 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 43 monthly and 1,215 daily.
Northdown (Hamley) set a daily record precipitation of 43.2 mm (1.7 in) on 30 September 2011.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 434 records.

Record Map

1,258 stations

1,258 station records on 30 September 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Northdown (Hamley)	Australia	Record daily precipitation	43.2 mm (1.7 in)	59 of 100 (Notable)
Nanning	China	Record daily precipitation	115.7 mm (4.6 in)	57 of 100 (Notable)
Falun	Sweden	Record high maximum temperature	23.4 C (74.1 F)	56 of 100 (Notable)
Munising	United States	Record daily precipitation	55.9 mm (2.2 in)	54 of 100 (Notable)
Seaspray (Burong)	Australia	Record daily precipitation	30.0 mm (1.2 in)	53 of 100 (Notable)
Volshskiy Gmo	Russia	Record daily precipitation	35.5 mm (1.4 in)	53 of 100 (Notable)
Ak-Bulak	Russia	Record daily precipitation	27.6 mm (1.1 in)	52 of 100 (Notable)
Mirboo North Water Board	Australia	Record daily precipitation	35.0 mm (1.4 in)	51 of 100 (Notable)
Black Spur	Australia	Record daily precipitation	89.2 mm (3.5 in)	51 of 100 (Notable)
Putbus	Germany	Record high maximum temperature	24.8 C (76.6 F)	50 of 100 (Notable)
Aleksandrovsk-Sahalinskij	Russia	Record low maximum temperature	4.5 C (40.1 F)	50 of 100 (Notable)
Big Bay 1NW	United States	Record daily precipitation	51.1 mm (2.0 in)	49 of 100 (Notable)
Cincinnati-Fernbank	United States	Record daily precipitation	106.2 mm (4.2 in)	49 of 100 (Notable)
Kristianstad	Sweden	Record high maximum temperature	22.3 C (72.1 F)	47 of 100 (Notable)
Springvale Necropolis	Australia	Record daily precipitation	67.0 mm (2.6 in)	46 of 100 (Notable)
Den Helder-1	Netherlands	Record high maximum temperature	24.7 C (76.5 F)	46 of 100 (Notable)
Karlshamn	Sweden	Record high maximum temperature	22.9 C (73.2 F)	46 of 100 (Notable)
Qinzhou	China	Record daily precipitation	96.0 mm (3.8 in)	45 of 100 (Notable)
Sveg	Sweden	Record high maximum temperature	21.6 C (70.9 F)	45 of 100 (Notable)
Copper Harbor Ft Wilkins	United States	Record daily precipitation	58.9 mm (2.3 in)	45 of 100 (Notable)
Greifswald	Germany	Record high maximum temperature	25.3 C (77.5 F)	44 of 100 (Notable)
Zamora	Mexico	Record daily precipitation	42.9 mm (1.7 in)	44 of 100 (Notable)
Haparanda	Sweden	Record high maximum temperature	15.8 C (60.4 F)	44 of 100 (Notable)
Great Falls 16St	United States	Record high maximum temperature	32.2 C (90.0 F)	44 of 100 (Notable)
Greenville Kgvl Radio	United States	Record high maximum temperature	40.0 C (104.0 F)	44 of 100 (Notable)
Potsdam	Germany	Record high maximum temperature	26.3 C (79.3 F)	43 of 100 (Notable)
Poronajsk	Russia	Record low maximum temperature	5.2 C (41.4 F)	43 of 100 (Notable)
Malung	Sweden	Record high maximum temperature	21.1 C (70.0 F)	43 of 100 (Notable)
Aspendell	United States	Record high maximum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Norfolk 2 SW	United States	Record daily precipitation	80.3 mm (3.2 in)	43 of 100 (Notable)
Inglewood Post Office	Australia	Record daily precipitation	31.5 mm (1.2 in)	42 of 100 (Notable)
Trafalgar Toseland Road	Australia	Record daily precipitation	31.4 mm (1.2 in)	42 of 100 (Notable)
Lake Eildon	Australia	Record daily precipitation	32.2 mm (1.3 in)	42 of 100 (Notable)
Abbeville	France	Record high maximum temperature	27.3 C (81.1 F)	42 of 100 (Notable)
Pte de Chassiron	France	Record high maximum temperature	29.2 C (84.6 F)	42 of 100 (Notable)
Schwerin	Germany	Record high maximum temperature	25.5 C (77.9 F)	42 of 100 (Notable)
Gardermoen Sor	Norway	Record high maximum temperature	24.6 C (76.3 F)	42 of 100 (Notable)
Stavanger - Valand	Norway	Record high maximum temperature	23.2 C (73.8 F)	42 of 100 (Notable)
Chittenden	United States	Record daily precipitation	30.2 mm (1.2 in)	42 of 100 (Notable)
Wee Waa (George St)	Australia	Record daily precipitation	38.4 mm (1.5 in)	41 of 100 (Notable)
Pte de la Hague	France	Record high maximum temperature	28.2 C (82.8 F)	41 of 100 (Notable)
Harnosand	Sweden	Record high maximum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Harnosand	Sweden	Record high minimum temperature	11.9 C (53.4 F)	41 of 100 (Notable)
Uppsala_Aut	Sweden	Record high maximum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Hillsboro	United States	Record high maximum temperature	38.3 C (100.9 F)	41 of 100 (Notable)
Tunka	Russia	Record low minimum temperature	-10.5 C (13.1 F)	40 of 100 (Notable)
Vasteras-Hasslo	Sweden	Record high maximum temperature	21.1 C (70.0 F)	40 of 100 (Notable)
Trondheim - Voll	Norway	Record high minimum temperature	13.5 C (56.3 F)	39 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record high minimum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Santa Rosa	United States	Record high minimum temperature	15.0 C (59.0 F)	39 of 100 (Notable)
W Otis	United States	Record daily precipitation	54.9 mm (2.2 in)	39 of 100 (Notable)
Marquette	United States	Record daily precipitation	47.5 mm (1.9 in)	39 of 100 (Notable)
San Simon	United States	Record high minimum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Schmucke	Germany	Record high minimum temperature	14.2 C (57.6 F)	37 of 100 (Notable)
Forse	Sweden	Record high minimum temperature	10.8 C (51.4 F)	37 of 100 (Notable)
Waddington	United Kingdom	Record high maximum temperature	28.4 C (83.1 F)	37 of 100 (Notable)
Wickenburg	United States	Record high minimum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Herman	United States	Record daily precipitation	64.0 mm (2.5 in)	37 of 100 (Notable)
Burnet	United States	Record high maximum temperature	37.8 C (100.0 F)	37 of 100 (Notable)
Bundarra (Granite Heights)	Australia	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,258 records

Records set or tied on 30 September 2011 by type: Highest daily maximum 659, Lowest daily maximum 74, Highest daily minimum 266, Lowest daily minimum 56, Heaviest daily rainfall 203.

Records on 30 September 2011 by type
Record type	Records
Highest daily maximum	659
Lowest daily maximum	74
Highest daily minimum	266
Lowest daily minimum	56
Heaviest daily rainfall	203
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 September 2011 by timescale: all-time 0, monthly 43, daily 1,215.

How Much Records Were Beaten By

1,044 broken records

Margins by which the 1,044 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 89.7. Ties are not counted.

Top 20 by Significance

30 September 2011

Top 20 records on 30 September 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 2011	Northdown (Hamley), AU	daily rain	43.2 mm (1.7 in)	17.8 mm (0.7 in)	78 years	59 of 100 (Notable)
30 September 2011	Nanning, CN	daily rain	115.7 mm (4.6 in)	81.8 mm (3.2 in)	38 years	57 of 100 (Notable)
30 September 2011	Falun, SE	daily high max	23.4 C (74.1 F)	5.4 C (9.7 F)	102 years	56 of 100 (Notable)
30 September 2011	Munising, US	daily rain	55.9 mm (2.2 in)	27.5 mm (1.1 in)	49 years	54 of 100 (Notable)
30 September 2011	Seaspray (Burong), AU	daily rain	30.0 mm (1.2 in)	16.0 mm (0.6 in)	48 years	53 of 100 (Notable)
30 September 2011	Volshskiy Gmo, RU	daily rain	35.5 mm (1.4 in)	20.1 mm (0.8 in)	42 years	53 of 100 (Notable)
30 September 2011	Ak-Bulak, RU	daily rain	27.6 mm (1.1 in)	18.6 mm (0.7 in)	25 years	52 of 100 (Notable)
30 September 2011	Mirboo North Water Board, AU	daily rain	35.0 mm (1.4 in)	21.0 mm (0.8 in)	57 years	51 of 100 (Notable)
30 September 2011	Black Spur, AU	daily rain	89.2 mm (3.5 in)	41.4 mm (1.6 in)	57 years	51 of 100 (Notable)
30 September 2011	Putbus, DE	daily high max	24.8 C (76.6 F)	3.5 C (6.3 F)	148 years	50 of 100 (Notable)
30 September 2011	Aleksandrovsk-Sahalinskij, RU	monthly low max	4.5 C (40.1 F)	1.0 C (1.8 F)	95 years	50 of 100 (Notable)
30 September 2011	Big Bay 1NW, US	daily rain	51.1 mm (2.0 in)	41.2 mm (1.6 in)	16 years	49 of 100 (Notable)
30 September 2011	Cincinnati-Fernbank, US	daily rain	106.2 mm (4.2 in)	89.7 mm (3.5 in)	20 years	49 of 100 (Notable)
30 September 2011	Kristianstad, SE	daily high max	22.3 C (72.1 F)	2.3 C (4.1 F)	109 years	47 of 100 (Notable)
30 September 2011	Springvale Necropolis, AU	monthly rain	67.0 mm (2.6 in)	9.8 mm (0.39 in)	56 years	46 of 100 (Notable)
30 September 2011	Den Helder-1, NL	daily high max	24.7 C (76.5 F)	1.8 C (3.2 F)	102 years	46 of 100 (Notable)
30 September 2011	Karlshamn, SE	daily high max	22.9 C (73.2 F)	1.9 C (3.4 F)	102 years	46 of 100 (Notable)
30 September 2011	Qinzhou, CN	daily rain	96.0 mm (3.8 in)	58.1 mm (2.3 in)	54 years	45 of 100 (Notable)
30 September 2011	Sveg, SE	daily high max	21.6 C (70.9 F)	2.1 C (3.8 F)	115 years	45 of 100 (Notable)
30 September 2011	Copper Harbor Ft Wilkins, US	daily rain	58.9 mm (2.3 in)	28.7 mm (1.1 in)	25 years	45 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 2011

Records set or tied on this calendar date in each year from 1806 to 2011. 2011 had 1,258 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 2011-09-30: 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 20	1,021
20 to 40	18
40 to 60	3
60 to 80	0
80 to 100	2