Weather Records on 22 September 1917

128 weather records were set or tied worldwide on 22 September 1917. Highest significance: George Airport, ZA.

Key Facts for 22 September 1917

On 22 September 1917, 128 weather records were set or tied at long-record stations worldwide.
10 were record highs and 5 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 127 daily.
George Airport set a daily record precipitation of 57.1 mm (2.2 in) on 22 September 1917.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 430 records.

Record Map

128 stations

128 station records on 22 September 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 22 September 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
George Airport	South Africa	Record daily precipitation	57.1 mm (2.2 in)	53 of 100 (Notable)
Knysna (Tnk)	South Africa	Record daily precipitation	64.3 mm (2.5 in)	49 of 100 (Notable)
Holbrook (Rsl)	Australia	Record daily precipitation	52.1 mm (2.1 in)	48 of 100 (Notable)
Elmore	Australia	Record daily precipitation	41.9 mm (1.6 in)	47 of 100 (Notable)
Runnymede	Australia	Record daily precipitation	38.6 mm (1.5 in)	47 of 100 (Notable)
Seymour Shire Depot	Australia	Record daily precipitation	53.3 mm (2.1 in)	47 of 100 (Notable)
Mitiamo 1	Australia	Record daily precipitation	36.8 mm (1.4 in)	46 of 100 (Notable)
Yarrawalla South	Australia	Record daily precipitation	35.6 mm (1.4 in)	45 of 100 (Notable)
Kerang (Tragowell)	Australia	Record daily precipitation	26.2 mm (1.0 in)	45 of 100 (Notable)
Beechworth Composite	Australia	Record daily precipitation	43.7 mm (1.7 in)	44 of 100 (Notable)
Millwood (Bos)	South Africa	Record daily precipitation	57.2 mm (2.3 in)	44 of 100 (Notable)
Dingee	Australia	Record daily precipitation	42.9 mm (1.7 in)	43 of 100 (Notable)
Yallook	Australia	Record daily precipitation	39.4 mm (1.6 in)	43 of 100 (Notable)
Canary Island	Australia	Record daily precipitation	25.7 mm (1.0 in)	42 of 100 (Notable)
Tyntynder Station	Australia	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Kergunyah South	Australia	Record daily precipitation	40.1 mm (1.6 in)	39 of 100 (Notable)
Kerang	Australia	Record daily precipitation	25.1 mm (1.0 in)	38 of 100 (Notable)
Calivil	Australia	Record daily precipitation	38.1 mm (1.5 in)	36 of 100 (Notable)
Oudtshoorn	South Africa	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Kerang (Meran Downs)	Australia	Record daily precipitation	26.2 mm (1.0 in)	33 of 100 (Routine)
Whroo	Australia	Record daily precipitation	31.0 mm (1.2 in)	32 of 100 (Routine)
Bendigo Prison	Australia	Record daily precipitation	33.0 mm (1.3 in)	31 of 100 (Routine)
Yackandandah	Australia	Record daily precipitation	39.1 mm (1.5 in)	31 of 100 (Routine)
Boort	Australia	Record daily precipitation	25.7 mm (1.0 in)	29 of 100 (Routine)
Fryerstown	Australia	Record daily precipitation	30.2 mm (1.2 in)	27 of 100 (Routine)
Alexandria (Pol)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	27 of 100 (Routine)
Rushworth	Australia	Record daily precipitation	25.4 mm (1.0 in)	26 of 100 (Routine)
Humansdorp (Pol)	South Africa	Record daily precipitation	29.2 mm (1.1 in)	26 of 100 (Routine)
Bloukrans (Bos)	South Africa	Record daily precipitation	56.6 mm (2.2 in)	26 of 100 (Routine)
Tumbarumba Post Office	Australia	Record daily precipitation	37.3 mm (1.5 in)	22 of 100 (Routine)
Heathcote	Australia	Record daily precipitation	32.5 mm (1.3 in)	22 of 100 (Routine)
Prince Albert	Canada	Record high maximum temperature	31.7 C (89.1 F)	22 of 100 (Routine)
Maldon (Derby Hill)	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Mallan (Niemur Valley)	Australia	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Swan Hill Post Office	Australia	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Gredgwin (Barraport North)	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Benjeroop (Davey)	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Moolpa	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Tatura Post Office	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Killalpaninna	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Euston Post Office	Australia	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Walbundrie (Crediton Street)	Australia	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Wentworth Post Office	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Maly Uzen'	Russia	Record daily precipitation	18.8 mm (0.7 in)	20 of 100 (Routine)
Chiltern (Post Office)	Australia	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Alexandra (Post Office)	Australia	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Rutherglen Netherby Wine	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Barmah East	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Nagambie Cba	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Kyabram Post Office	Australia	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Calitzdorp Pol	South Africa	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Balranald (Rsl)	Australia	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Eskdale	Australia	Record daily precipitation	36.6 mm (1.4 in)	20 of 100 (Routine)
Woods Point	Australia	Record daily precipitation	41.9 mm (1.6 in)	20 of 100 (Routine)
Yea	Australia	Record daily precipitation	17.5 mm (0.7 in)	20 of 100 (Routine)
Kargopol	Russia	Record daily precipitation	20.0 mm (0.8 in)	20 of 100 (Routine)
Jansenville	South Africa	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Graaff Reinet	South Africa	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Sacramento 5 ESE	United States	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Pooncarie Mail Agency	Australia	Record daily precipitation	7.6 mm (0.30 in)	19 of 100 (Routine)

Counts by Type and Timescale

128 records

Records set or tied on 22 September 1917 by type: Highest daily maximum 5, Lowest daily maximum 4, Highest daily minimum 5, Lowest daily minimum 1, Heaviest daily rainfall 113.

Records on 22 September 1917 by type
Record type	Records
Highest daily maximum	5
Lowest daily maximum	4
Highest daily minimum	5
Lowest daily minimum	1
Heaviest daily rainfall	113
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 22 September 1917 by timescale: all-time 0, monthly 1, daily 127.

How Much Records Were Beaten By

120 broken records

Margins by which the 120 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 47.7. Ties are not counted.

Top 20 by Significance

22 September 1917

Top 20 records on 22 September 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 September 1917	George Airport, ZA	daily rain	57.1 mm (2.2 in)	47.7 mm (1.9 in)	33 years	53 of 100 (Notable)
22 September 1917	Knysna (Tnk), ZA	daily rain	64.3 mm (2.5 in)	47.0 mm (1.9 in)	32 years	49 of 100 (Notable)
22 September 1917	Holbrook (Rsl), AU	daily rain	52.1 mm (2.1 in)	44.2 mm (1.7 in)	19 years	48 of 100 (Notable)
22 September 1917	Elmore, AU	daily rain	41.9 mm (1.6 in)	26.7 mm (1.1 in)	28 years	47 of 100 (Notable)
22 September 1917	Runnymede, AU	daily rain	38.6 mm (1.5 in)	33.5 mm (1.3 in)	16 years	47 of 100 (Notable)
22 September 1917	Seymour Shire Depot, AU	daily rain	53.3 mm (2.1 in)	35.3 mm (1.4 in)	16 years	47 of 100 (Notable)
22 September 1917	Mitiamo 1, AU	daily rain	36.8 mm (1.4 in)	33.2 mm (1.3 in)	12 years	46 of 100 (Notable)
22 September 1917	Yarrawalla South, AU	daily rain	35.6 mm (1.4 in)	29.0 mm (1.1 in)	28 years	45 of 100 (Notable)
22 September 1917	Kerang (Tragowell), AU	daily rain	26.2 mm (1.0 in)	25.2 mm (1.0 in)	12 years	45 of 100 (Notable)
22 September 1917	Beechworth Composite, AU	daily rain	43.7 mm (1.7 in)	27.4 mm (1.1 in)	28 years	44 of 100 (Notable)
22 September 1917	Millwood (Bos), ZA	daily rain	57.2 mm (2.3 in)	46.5 mm (1.8 in)	12 years	44 of 100 (Notable)
22 September 1917	Dingee, AU	daily rain	42.9 mm (1.7 in)	36.8 mm (1.4 in)	0 years	43 of 100 (Notable)
22 September 1917	Yallook, AU	daily rain	39.4 mm (1.6 in)	34.8 mm (1.4 in)	0 years	43 of 100 (Notable)
22 September 1917	Canary Island, AU	daily rain	25.7 mm (1.0 in)	21.1 mm (0.8 in)	28 years	42 of 100 (Notable)
22 September 1917	Tyntynder Station, AU	daily rain	29.0 mm (1.1 in)	23.9 mm (0.9 in)	4 years	41 of 100 (Notable)
22 September 1917	Kergunyah South, AU	daily rain	40.1 mm (1.6 in)	25.4 mm (1.0 in)	28 years	39 of 100 (Notable)
22 September 1917	Kerang, AU	daily rain	25.1 mm (1.0 in)	23.8 mm (0.9 in)	0 years	38 of 100 (Notable)
22 September 1917	Calivil, AU	daily rain	38.1 mm (1.5 in)	21.1 mm (0.8 in)	28 years	36 of 100 (Notable)
22 September 1917	Oudtshoorn, ZA	daily rain	31.0 mm (1.2 in)	25.4 mm (1.0 in)	23 years	35 of 100 (Notable)
22 September 1917	Kerang (Meran Downs), AU	daily rain	26.2 mm (1.0 in)	16.5 mm (0.6 in)	28 years	33 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

1793 to 1917

Records set or tied on this calendar date in each year from 1793 to 1917. 1917 had 128 records.

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

Records on 09-22 in each year
Year	Records
1793	1
1796	1
1824	1
1825	1
1827	1
1830	1
1835	1
1838	1
1840	1
1842	2
1845	1
1846	1
1848	1
1851	3
1855	1
1856	1
1858	1
1863	1
1865	1
1868	1
1872	1
1874	1
1875	1
1877	4
1878	1
1881	2
1882	3
1885	1
1886	1
1888	1
1889	2
1890	2
1892	3
1893	1
1894	1
1895	7
1896	2
1897	3
1898	8
1899	12
1900	3
1901	3
1902	7
1903	4
1904	34
1905	5
1906	16
1907	12
1908	10
1909	6
1910	18
1911	17
1912	17
1913	43
1914	48
1915	23
1916	236
1917	128
1918	25
1919	64
1920	35
1921	44
1922	27
1923	118
1924	132
1925	265
1926	214
1927	160
1928	119
1929	166
1930	231
1931	732
1932	189
1933	230
1934	348
1935	231
1936	448
1937	507
1938	394
1939	266
1940	621
1941	424
1942	323
1943	266
1944	299
1945	739
1946	288
1947	583
1948	345
1949	385
1950	394
1951	419
1952	383
1953	253
1954	359
1955	584
1956	490
1957	580
1958	633
1959	416
1960	360
1961	555
1962	732
1963	351
1964	249
1965	841
1966	595
1967	507
1968	526
1969	488
1970	1,197
1971	500
1972	448
1973	509
1974	1,075
1975	591
1976	538
1977	632
1978	620
1979	991
1980	1,199
1981	754
1982	1,122
1983	2,060
1984	614
1985	820
1986	729
1987	1,300
1988	665
1989	1,155
1990	795
1991	758
1992	1,011
1993	1,448
1994	941
1995	2,498
1996	916
1997	851
1998	1,251
1999	1,172
2000	1,508
2001	604
2002	718
2003	1,472
2004	948
2005	1,155
2006	1,260
2007	896
2008	830
2009	985
2010	1,217
2011	611
2012	568
2013	673
2014	812
2015	666
2016	1,096
2017	1,272
2018	574
2019	651
2020	687
2021	432
2022	985
2023	905
2024	502
2025	387
2026	309

Download the Data

Data for records on 1917-09-22: 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).

Histogram of margins by which records were beaten on 22 September 1917
Margin	Records
0 to 10	71
10 to 20	26
20 to 30	13
30 to 40	5
40 to 50	5