Weather Records on 1 October 1917

52 weather records were set or tied worldwide on 1 October 1917. Highest significance: Willowmore, ZA.

Key Facts for 1 October 1917

On 1 October 1917, 52 weather records were set or tied at long-record stations worldwide.
7 were record highs and 2 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 49 daily.
Willowmore set a monthly record daily precipitation of 72.9 mm (2.9 in) on 1 October 1917.
Across 161 earlier years (1813 to 2026) the same calendar date averaged 439 records.

Record Map

52 stations

52 station records on 1 October 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 October 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Willowmore	South Africa	Record daily precipitation	72.9 mm (2.9 in)	55 of 100 (Notable)
Beaufort West (Met)	South Africa	Record daily precipitation	60.5 mm (2.4 in)	55 of 100 (Notable)
Calitzdorp Pol	South Africa	Record daily precipitation	37.6 mm (1.5 in)	46 of 100 (Notable)
Premer Post Office	Australia	Record daily precipitation	26.2 mm (1.0 in)	39 of 100 (Notable)
Millwood (Bos)	South Africa	Record daily precipitation	58.4 mm (2.3 in)	38 of 100 (Notable)
Caledon (Pol)	South Africa	Record daily precipitation	34.3 mm (1.4 in)	36 of 100 (Notable)
Llangollen	Australia	Record daily precipitation	27.2 mm (1.1 in)	35 of 100 (Notable)
Oudtshoorn	South Africa	Record daily precipitation	43.7 mm (1.7 in)	30 of 100 (Routine)
Uniondale (Tnk)	South Africa	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Cassilis (Dalkeith)	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Willow Tree (Valais)	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Perth Regional Office	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Bredasdorp	South Africa	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Anticosti West Point	Canada	Record daily precipitation	31.5 mm (1.2 in)	20 of 100 (Routine)
Humansdorp (Pol)	South Africa	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Derra	Australia	Record daily precipitation	12.7 mm (0.5 in)	19 of 100 (Routine)
Boulia Airport	Australia	Record daily precipitation	7.4 mm (0.29 in)	18 of 100 (Routine)
Matjiesfontein (Sar)	South Africa	Record daily precipitation	8.6 mm (0.34 in)	17 of 100 (Routine)
Esk Post Office	Australia	Record daily precipitation	27.2 mm (1.1 in)	16 of 100 (Routine)
Goonal	Australia	Record daily precipitation	13.7 mm (0.5 in)	16 of 100 (Routine)
Rotherwood	Australia	Record daily precipitation	13.0 mm (0.5 in)	16 of 100 (Routine)
Victoria River Downs	Australia	Record daily precipitation	16.0 mm (0.6 in)	15 of 100 (Routine)
Blackville Post Office	Australia	Record daily precipitation	8.4 mm (0.33 in)	15 of 100 (Routine)
Emmaville Post Office	Australia	Record daily precipitation	14.0 mm (0.6 in)	15 of 100 (Routine)
Pointe Au Pere	Canada	Record low maximum temperature	5.6 C (42.1 F)	15 of 100 (Routine)
Astoria	United States	Record high minimum temperature	14.4 C (57.9 F)	15 of 100 (Routine)
Cassilis Post Office	Australia	Record daily precipitation	10.2 mm (0.4 in)	14 of 100 (Routine)
Denman (Palace Street)	Australia	Record daily precipitation	5.6 mm (0.22 in)	13 of 100 (Routine)
Santa Fe	United States	Record daily precipitation	1.8 mm (0.07 in)	13 of 100 (Routine)
Blackville (Krui Vale)	Australia	Record daily precipitation	11.7 mm (0.5 in)	12 of 100 (Routine)
Coolah (Binnia St)	Australia	Record daily precipitation	5.6 mm (0.22 in)	12 of 100 (Routine)
Montagu (Pol)	South Africa	Record daily precipitation	7.6 mm (0.30 in)	12 of 100 (Routine)
Chatham	Canada	Record daily precipitation	30.0 mm (1.2 in)	11 of 100 (Routine)
Worcester	South Africa	Record daily precipitation	16.5 mm (0.6 in)	11 of 100 (Routine)
Waverley (Belltrees 2)	Australia	Record daily precipitation	4.8 mm (0.19 in)	10 of 100 (Routine)
Mahackala	Russia	Record daily precipitation	10.3 mm (0.4 in)	10 of 100 (Routine)
Cobar Post Office	Australia	Record high maximum temperature	33.3 C (91.9 F)	8 of 100 (Routine)
Mogil Mogil (Benimora)	Australia	Record daily precipitation	5.1 mm (0.20 in)	8 of 100 (Routine)
Tulloona (Coolanga)	Australia	Record daily precipitation	7.4 mm (0.29 in)	8 of 100 (Routine)
Inverell Comparison	Australia	Record daily precipitation	2.3 mm (0.09 in)	8 of 100 (Routine)
Murrurundi Post Office	Australia	Record daily precipitation	11.4 mm (0.4 in)	8 of 100 (Routine)
Bjuraker	Sweden	Record low minimum temperature	-4.5 C (23.9 F)	8 of 100 (Routine)
Baku	Azerbaijan	Record daily precipitation	4.5 mm (0.18 in)	7 of 100 (Routine)
Robe Comparison	Australia	Record high minimum temperature	13.9 C (57.0 F)	7 of 100 (Routine)
Wingen (Murrulla)	Australia	Record daily precipitation	6.6 mm (0.26 in)	7 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high minimum temperature	12.2 C (54.0 F)	7 of 100 (Routine)
Pallal	Australia	Record daily precipitation	5.1 mm (0.20 in)	6 of 100 (Routine)
Gundy (Miller St)	Australia	Record daily precipitation	3.0 mm (0.12 in)	6 of 100 (Routine)
Ekaterinburg	Russia	Record high minimum temperature	10.2 C (50.4 F)	5 of 100 (Routine)
Alice Springs Post Office	Australia	Record high maximum temperature	37.2 C (99.0 F)	3 of 100 (Routine)
Gunnedah Pool	Australia	Record high minimum temperature	15.6 C (60.1 F)	3 of 100 (Routine)
Narrabri Bowling Club	Australia	Record daily precipitation	2.5 mm (0.10 in)	2 of 100 (Routine)

Counts by Type and Timescale

52 records

Records set or tied on 1 October 1917 by type: Highest daily maximum 2, Lowest daily maximum 1, Highest daily minimum 5, Lowest daily minimum 1, Heaviest daily rainfall 43.

Records on 1 October 1917 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	1
Highest daily minimum	5
Lowest daily minimum	1
Heaviest daily rainfall	43
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 1 October 1917 by timescale: all-time 0, monthly 3, daily 49.

How Much Records Were Beaten By

49 broken records

Margins by which the 49 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 34.5. Ties are not counted.

Top 20 by Significance

1 October 1917

Top 20 records on 1 October 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 October 1917	Willowmore, ZA	monthly rain	72.9 mm (2.9 in)	32.5 mm (1.3 in)	3 years	55 of 100 (Notable)
1 October 1917	Beaufort West (Met), ZA	monthly rain	60.5 mm (2.4 in)	30.0 mm (1.2 in)	3 years	55 of 100 (Notable)
1 October 1917	Calitzdorp Pol, ZA	daily rain	37.6 mm (1.5 in)	32.5 mm (1.3 in)	8 years	46 of 100 (Notable)
1 October 1917	Premer Post Office, AU	daily rain	26.2 mm (1.0 in)	26.2 mm (1.0 in)	34 years	39 of 100 (Notable)
1 October 1917	Millwood (Bos), ZA	daily rain	58.4 mm (2.3 in)	34.5 mm (1.4 in)	12 years	38 of 100 (Notable)
1 October 1917	Caledon (Pol), ZA	daily rain	34.3 mm (1.4 in)	29.2 mm (1.1 in)	16 years	36 of 100 (Notable)
1 October 1917	Llangollen, AU	daily rain	27.2 mm (1.1 in)	22.9 mm (0.9 in)	17 years	35 of 100 (Notable)
1 October 1917	Oudtshoorn, ZA	monthly rain	43.7 mm (1.7 in)	9.2 mm (0.36 in)	11 years	30 of 100 (Routine)
1 October 1917	Uniondale (Tnk), ZA	daily rain	21.3 mm (0.8 in)	15.5 mm (0.6 in)	2 years	20 of 100 (Routine)
1 October 1917	Cassilis (Dalkeith), AU	daily rain	16.3 mm (0.6 in)	12.0 mm (0.5 in)	17 years	20 of 100 (Routine)
1 October 1917	Willow Tree (Valais), AU	daily rain	16.3 mm (0.6 in)	14.8 mm (0.6 in)	21 years	20 of 100 (Routine)
1 October 1917	Perth Regional Office, AU	daily rain	23.4 mm (0.9 in)	8.9 mm (0.35 in)	10 years	20 of 100 (Routine)
1 October 1917	Bredasdorp, ZA	daily rain	17.0 mm (0.7 in)	9.1 mm (0.36 in)	30 years	20 of 100 (Routine)
1 October 1917	Anticosti West Point, CA	daily rain	31.5 mm (1.2 in)	13.0 mm (0.5 in)	8 years	20 of 100 (Routine)
1 October 1917	Humansdorp (Pol), ZA	daily rain	21.8 mm (0.9 in)	5.3 mm (0.21 in)	34 years	20 of 100 (Routine)
1 October 1917	Derra, AU	daily rain	12.7 mm (0.5 in)	9.7 mm (0.38 in)	21 years	19 of 100 (Routine)
1 October 1917	Boulia Airport, AU	daily rain	7.4 mm (0.29 in)	7.1 mm (0.28 in)	16 years	18 of 100 (Routine)
1 October 1917	Matjiesfontein (Sar), ZA	daily rain	8.6 mm (0.34 in)	4.8 mm (0.19 in)	26 years	17 of 100 (Routine)
1 October 1917	Esk Post Office, AU	daily rain	27.2 mm (1.1 in)	6.9 mm (0.27 in)	23 years	16 of 100 (Routine)
1 October 1917	Goonal, AU	daily rain	13.7 mm (0.5 in)	8.4 mm (0.33 in)	21 years	16 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

1813 to 1917

Records set or tied on this calendar date in each year from 1813 to 1917. 1917 had 52 records.

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

Records on 10-01 in each year
Year	Records
1813	1
1814	1
1817	1
1819	1
1820	2
1823	1
1828	1
1845	1
1847	2
1861	1
1865	1
1866	1
1869	1
1870	1
1871	1
1874	4
1876	1
1877	3
1879	1
1881	6
1882	1
1883	1
1884	1
1886	1
1888	3
1889	1
1890	4
1891	1
1892	1
1893	9
1894	4
1895	1
1897	7
1898	1
1899	16
1900	2
1901	4
1902	16
1903	9
1904	8
1905	8
1906	11
1907	11
1908	20
1909	14
1910	12
1911	34
1912	37
1913	20
1914	28
1915	65
1916	105
1917	52
1918	20
1919	25
1920	98
1921	129
1922	160
1923	158
1924	86
1925	135
1926	181
1927	754
1928	129
1929	158
1930	106
1931	237
1932	220
1933	519
1934	188
1935	201
1936	388
1937	453
1938	284
1939	283
1940	207
1941	425
1942	290
1943	324
1944	583
1945	677
1946	486
1947	867
1948	271
1949	254
1950	1,019
1951	521
1952	712
1953	656
1954	976
1955	280
1956	260
1957	646
1958	1,050
1959	1,306
1960	143
1961	566
1962	376
1963	598
1964	312
1965	521
1966	646
1967	437
1968	426
1969	454
1970	275
1971	1,449
1972	625
1973	418
1974	1,104
1975	561
1976	854
1977	1,097
1978	492
1979	488
1980	600
1981	785
1982	733
1983	783
1984	1,266
1985	1,621
1986	1,476
1987	648
1988	502
1989	739
1990	612
1991	1,020
1992	1,392
1993	1,042
1994	580
1995	746
1996	1,007
1997	1,080
1998	1,345
1999	1,096
2000	1,006
2001	924
2002	951
2003	1,198
2004	826
2005	902
2006	806
2007	726
2008	573
2009	1,051
2010	1,093
2011	1,324
2012	647
2013	515
2014	397
2015	729
2016	473
2017	472
2018	694
2019	2,439
2020	566
2021	753
2022	609
2023	1,173
2024	751
2025	384
2026	553

Download the Data

Data for records on 1917-10-01: 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	23
5 to 10	13
10 to 15	5
15 to 20	1
20 to 25	1
25 to 30	2
30 to 35	4