Weather Records on 30 August 1921

100 weather records were set or tied worldwide on 30 August 1921. Highest significance: Pitea, SE.

Key Facts for 30 August 1921

On 30 August 1921, 100 weather records were set or tied at long-record stations worldwide.
66 were record highs and 9 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 98 daily.
Pitea set a daily record precipitation of 41.2 mm (1.6 in) on 30 August 1921.
Across 169 earlier years (1806 to 2026) the same calendar date averaged 425 records.

Record Map

100 stations

100 station records on 30 August 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 August 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Pitea	Sweden	Record daily precipitation	41.2 mm (1.6 in)	48 of 100 (Notable)
Jokkmokk	Sweden	Record daily precipitation	25.6 mm (1.0 in)	41 of 100 (Notable)
Oestersund-Froesoen	Sweden	Record daily precipitation	48.5 mm (1.9 in)	34 of 100 (Routine)
Augathella Post Office	Australia	Record daily precipitation	44.5 mm (1.8 in)	32 of 100 (Routine)
Cape May 2 NW	United States	Record high maximum temperature	33.3 C (91.9 F)	32 of 100 (Routine)
Campbelltown 1	Australia	Record daily precipitation	28.2 mm (1.1 in)	29 of 100 (Routine)
Menangle Jmai	Australia	Record daily precipitation	34.0 mm (1.3 in)	27 of 100 (Routine)
Port Arthur	Canada	Record high maximum temperature	31.1 C (88.0 F)	27 of 100 (Routine)
Milwaukee Wb City	United States	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Tashkent	Uzbekistan	Record low maximum temperature	24.9 C (76.8 F)	25 of 100 (Routine)
Barrie	Canada	Record high minimum temperature	20.0 C (68.0 F)	23 of 100 (Routine)
Peterborough	Canada	Record high minimum temperature	20.6 C (69.1 F)	23 of 100 (Routine)
World Trade Ctr	United States	Record high maximum temperature	32.8 C (91.0 F)	23 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	31.7 C (89.1 F)	22 of 100 (Routine)
Portland	United States	Record high maximum temperature	33.3 C (91.9 F)	22 of 100 (Routine)
Jacksonville Wb City	United States	Record high minimum temperature	25.6 C (78.1 F)	21 of 100 (Routine)
Kazalinsk	Kazakhstan	Record daily precipitation	9.4 mm (0.37 in)	20 of 100 (Routine)
Bjuroklubb	Sweden	Record daily precipitation	22.7 mm (0.9 in)	20 of 100 (Routine)
Picton Council Depot	Australia	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Camden (Brownlow Hill)	Australia	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Cobbity (Roseneath)	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Camden Bowling Club	Australia	Record daily precipitation	32.5 mm (1.3 in)	20 of 100 (Routine)
Ny City Cntrl Park	United States	Record high maximum temperature	35.0 C (95.0 F)	20 of 100 (Routine)
Sidi-Bel-Abbes	Algeria	Record daily precipitation	0.7 mm (0.03 in)	19 of 100 (Routine)
Southampton	Canada	Record high minimum temperature	20.0 C (68.0 F)	19 of 100 (Routine)
London South	Canada	Record high maximum temperature	33.3 C (91.9 F)	18 of 100 (Routine)
Hamilton	Canada	Record high minimum temperature	21.7 C (71.1 F)	18 of 100 (Routine)
Brome	Canada	Record high minimum temperature	19.4 C (66.9 F)	18 of 100 (Routine)
Setauket Strong	United States	Record high maximum temperature	31.1 C (88.0 F)	18 of 100 (Routine)
Huron Rgnl AP	United States	Record high minimum temperature	20.6 C (69.1 F)	18 of 100 (Routine)
Owen Sound	Canada	Record high minimum temperature	21.1 C (70.0 F)	17 of 100 (Routine)
Haparanda	Sweden	Record daily precipitation	20.6 mm (0.8 in)	17 of 100 (Routine)
Newark Liberty Intl AP	United States	Record high maximum temperature	34.4 C (93.9 F)	17 of 100 (Routine)
Spring Hill	Australia	Record daily precipitation	31.8 mm (1.3 in)	16 of 100 (Routine)
Moruya Heads Pilot Station	Australia	Record daily precipitation	11.9 mm (0.5 in)	16 of 100 (Routine)
Stonecliffe	Canada	Record high minimum temperature	15.6 C (60.1 F)	16 of 100 (Routine)
Coldwater	Canada	Record high minimum temperature	18.9 C (66.0 F)	16 of 100 (Routine)
Quebec	Canada	Record high minimum temperature	18.3 C (64.9 F)	16 of 100 (Routine)
Moorestown 4 E	United States	Record high maximum temperature	33.9 C (93.0 F)	16 of 100 (Routine)
Philadelphia City	United States	Record high maximum temperature	34.4 C (93.9 F)	16 of 100 (Routine)
Alton	Canada	Record high minimum temperature	20.6 C (69.1 F)	15 of 100 (Routine)
Northfield	United States	Record high minimum temperature	17.2 C (63.0 F)	15 of 100 (Routine)
Milwaukee Wb City	United States	Record high maximum temperature	31.7 C (89.1 F)	15 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	34.4 C (93.9 F)	15 of 100 (Routine)
Cataract River	Australia	Record daily precipitation	15.5 mm (0.6 in)	14 of 100 (Routine)
Sfax El-Maou	Tunisia	Record low minimum temperature	17.0 C (62.6 F)	14 of 100 (Routine)
Nemours (Ghazaouet)	Algeria	Record high maximum temperature	32.0 C (89.6 F)	13 of 100 (Routine)
Ottawa Cda	Canada	Record high minimum temperature	18.9 C (66.0 F)	13 of 100 (Routine)
Stratford	Canada	Record high minimum temperature	20.6 C (69.1 F)	13 of 100 (Routine)
Umea	Sweden	Record daily precipitation	18.2 mm (0.7 in)	13 of 100 (Routine)
Lowell	United States	Record high maximum temperature	33.3 C (91.9 F)	13 of 100 (Routine)
Vineland	United States	Record high maximum temperature	35.0 C (95.0 F)	13 of 100 (Routine)
Fernmount	Australia	Record daily precipitation	16.5 mm (0.6 in)	12 of 100 (Routine)
Springwood Bowling Club	Australia	Record daily precipitation	9.9 mm (0.39 in)	12 of 100 (Routine)
Bancroft	Canada	Record high minimum temperature	18.3 C (64.9 F)	12 of 100 (Routine)
Lowell	United States	Record high minimum temperature	20.0 C (68.0 F)	12 of 100 (Routine)
Harrisburg - Coop	United States	Record high maximum temperature	33.9 C (93.0 F)	12 of 100 (Routine)
Beatrice	Canada	Record high minimum temperature	17.2 C (63.0 F)	11 of 100 (Routine)
Blue Hill Coop	United States	Record high maximum temperature	32.2 C (90.0 F)	11 of 100 (Routine)
Blue Hill Coop	United States	Record high minimum temperature	20.0 C (68.0 F)	11 of 100 (Routine)

Counts by Type and Timescale

100 records

Records set or tied on 30 August 1921 by type: Highest daily maximum 28, Lowest daily maximum 5, Highest daily minimum 38, Lowest daily minimum 4, Heaviest daily rainfall 25.

Records on 30 August 1921 by type
Record type	Records
Highest daily maximum	28
Lowest daily maximum	5
Highest daily minimum	38
Lowest daily minimum	4
Heaviest daily rainfall	25
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 August 1921 by timescale: all-time 0, monthly 2, daily 98.

How Much Records Were Beaten By

86 broken records

Margins by which the 86 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 28.5. Ties are not counted.

Top 20 by Significance

30 August 1921

Top 20 records on 30 August 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 1921	Pitea, SE	daily rain	41.2 mm (1.6 in)	28.5 mm (1.1 in)	8 years	48 of 100 (Notable)
30 August 1921	Jokkmokk, SE	daily rain	25.6 mm (1.0 in)	18.2 mm (0.7 in)	14 years	41 of 100 (Notable)
30 August 1921	Oestersund-Froesoen, SE	monthly rain	48.5 mm (1.9 in)	8.2 mm (0.32 in)	18 years	34 of 100 (Routine)
30 August 1921	Augathella Post Office, AU	monthly rain	44.5 mm (1.8 in)	8.4 mm (0.33 in)	31 years	32 of 100 (Routine)
30 August 1921	Cape May 2 NW, US	daily high max	33.3 C (91.9 F)	3.9 C (7.0 F)	43 years	32 of 100 (Routine)
30 August 1921	Campbelltown 1, AU	daily rain	28.2 mm (1.1 in)	10.4 mm (0.4 in)	33 years	29 of 100 (Routine)
30 August 1921	Menangle Jmai, AU	daily rain	34.0 mm (1.3 in)	14.2 mm (0.6 in)	19 years	27 of 100 (Routine)
30 August 1921	Port Arthur, CA	daily high max	31.1 C (88.0 F)	3.9 C (7.0 F)	41 years	27 of 100 (Routine)
30 August 1921	Milwaukee Wb City, US	daily rain	33.0 mm (1.3 in)	9.1 mm (0.36 in)	44 years	26 of 100 (Routine)
30 August 1921	Tashkent, UZ	daily low max	24.9 C (76.8 F)	3.4 C (6.1 F)	38 years	25 of 100 (Routine)
30 August 1921	Barrie, CA	daily high min	20.0 C (68.0 F)	2.8 C (5.0 F)	39 years	23 of 100 (Routine)
30 August 1921	Peterborough, CA	daily high min	20.6 C (69.1 F)	3.4 C (6.1 F)	34 years	23 of 100 (Routine)
30 August 1921	World Trade Ctr, US	daily high max	32.8 C (91.0 F)	1.7 C (3.1 F)	45 years	23 of 100 (Routine)
30 August 1921	Fredericton Unb, CA	daily high max	31.7 C (89.1 F)	1.7 C (3.1 F)	45 years	22 of 100 (Routine)
30 August 1921	Portland, US	daily high max	33.3 C (91.9 F)	2.2 C (4.0 F)	45 years	22 of 100 (Routine)
30 August 1921	Jacksonville Wb City, US	daily high min	25.6 C (78.1 F)	0.6 C (1.1 F)	40 years	21 of 100 (Routine)
30 August 1921	Kazalinsk, KZ	daily rain	9.4 mm (0.37 in)	9.4 mm (0.37 in)	39 years	20 of 100 (Routine)
30 August 1921	Bjuroklubb, SE	daily rain	22.7 mm (0.9 in)	12.2 mm (0.5 in)	27 years	20 of 100 (Routine)
30 August 1921	Picton Council Depot, AU	daily rain	23.6 mm (0.9 in)	10.1 mm (0.4 in)	33 years	20 of 100 (Routine)
30 August 1921	Camden (Brownlow Hill), AU	daily rain	20.3 mm (0.8 in)	13.4 mm (0.5 in)	19 years	20 of 100 (Routine)

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 1921

Records set or tied on this calendar date in each year from 1806 to 1921. 1921 had 100 records.

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

Records on 08-30 in each year
Year	Records
1806	1
1807	4
1813	1
1814	2
1827	1
1829	1
1835	1
1838	1
1839	1
1845	4
1850	1
1851	2
1855	1
1857	1
1859	1
1864	2
1867	1
1869	1
1870	2
1874	1
1875	2
1876	1
1877	2
1878	1
1880	4
1881	2
1882	1
1884	1
1885	5
1886	7
1887	1
1888	1
1889	2
1890	5
1891	1
1892	3
1893	3
1894	2
1895	1
1896	1
1897	3
1898	3
1899	2
1900	6
1901	8
1902	12
1903	19
1904	13
1905	23
1906	29
1907	8
1908	10
1909	37
1910	15
1911	41
1912	60
1913	22
1914	23
1915	47
1916	17
1917	50
1918	45
1919	17
1920	78
1921	100
1922	65
1923	61
1924	283
1925	167
1926	173
1927	109
1928	327
1929	208
1930	245
1931	192
1932	1,102
1933	274
1934	519
1935	476
1936	191
1937	418
1938	233
1939	401
1940	346
1941	422
1942	385
1943	487
1944	491
1945	455
1946	545
1947	599
1948	519
1949	240
1950	481
1951	1,091
1952	316
1953	1,124
1954	516
1955	417
1956	479
1957	321
1958	363
1959	546
1960	356
1961	573
1962	387
1963	442
1964	422
1965	1,118
1966	500
1967	536
1968	729
1969	522
1970	423
1971	443
1972	579
1973	646
1974	838
1975	664
1976	679
1977	665
1978	825
1979	517
1980	572
1981	684
1982	770
1983	696
1984	1,127
1985	629
1986	1,768
1987	638
1988	881
1989	791
1990	983
1991	938
1992	1,697
1993	1,200
1994	601
1995	940
1996	1,385
1997	960
1998	1,278
1999	864
2000	1,189
2001	750
2002	801
2003	1,226
2004	1,087
2005	1,500
2006	989
2007	1,300
2008	678
2009	1,251
2010	1,552
2011	994
2012	1,087
2013	644
2014	558
2015	1,074
2016	552
2017	924
2018	616
2019	755
2020	671
2021	429
2022	1,077
2023	651
2024	912
2025	324
2026	733

Download the Data

Data for records on 1921-08-30: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	68
5 to 10	9
10 to 15	7
15 to 20	1
20 to 25	0
25 to 30	1