Weather Records on 1 October 1940

207 weather records were set or tied worldwide on 1 October 1940. Highest significance: Medicine Hat A, CA.

Key Facts for 1 October 1940

On 1 October 1940, 207 weather records were set or tied at long-record stations worldwide.
59 were record highs and 49 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 19 monthly and 187 daily.
Medicine Hat A set a daily record precipitation of 30.5 mm (1.2 in) on 1 October 1940.
Across 161 earlier years (1813 to 2026) the same calendar date averaged 438 records.

Record Map

207 stations

207 station records on 1 October 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 October 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Medicine Hat A	Canada	Record daily precipitation	30.5 mm (1.2 in)	57 of 100 (Notable)
Hana 354	United States	Record daily precipitation	62.2 mm (2.4 in)	51 of 100 (Notable)
Sibasa	South Africa	Record daily precipitation	104.9 mm (4.1 in)	46 of 100 (Notable)
Busby	United States	Record daily precipitation	27.2 mm (1.1 in)	46 of 100 (Notable)
Colville	United States	Record daily precipitation	47.0 mm (1.9 in)	45 of 100 (Notable)
Kealia 1112	United States	Record daily precipitation	77.5 mm (3.1 in)	45 of 100 (Notable)
Julesburg	United States	Record daily precipitation	30.5 mm (1.2 in)	40 of 100 (Notable)
St Albans	Canada	Record high minimum temperature	15.0 C (59.0 F)	34 of 100 (Routine)
Tshakhuma	South Africa	Record daily precipitation	59.7 mm (2.4 in)	34 of 100 (Routine)
Columbia Falls 5 SW	United States	Record daily precipitation	26.7 mm (1.1 in)	33 of 100 (Routine)
Sarajevo	Bosnia and Herzegovina	Record daily precipitation	34.0 mm (1.3 in)	30 of 100 (Routine)
Haiku 490	United States	Record low minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Saskatoon Diefenbaker Int'l A	Canada	Record high minimum temperature	11.1 C (52.0 F)	27 of 100 (Routine)
Russell	Canada	Record high minimum temperature	14.4 C (57.9 F)	27 of 100 (Routine)
Chaplin	Canada	Record high minimum temperature	13.9 C (57.0 F)	24 of 100 (Routine)
Brandon Cda	Canada	Record high minimum temperature	14.4 C (57.9 F)	24 of 100 (Routine)
Somerville 4 NW	United States	Record low maximum temperature	13.9 C (57.0 F)	23 of 100 (Routine)
Osijek	Croatia	Record daily precipitation	32.3 mm (1.3 in)	22 of 100 (Routine)
Sivakasi	India	Record daily precipitation	30.2 mm (1.2 in)	22 of 100 (Routine)
Palmaryville	South Africa	Record daily precipitation	45.5 mm (1.8 in)	22 of 100 (Routine)
Cockle Creek (Pasminco Metals)	Australia	Record daily precipitation	48.5 mm (1.9 in)	21 of 100 (Routine)
Deols Chateauroux Aerodrome de	France	Record low maximum temperature	7.3 C (45.1 F)	21 of 100 (Routine)
Lugano	Switzerland	Record low maximum temperature	10.6 C (51.1 F)	21 of 100 (Routine)
Detroit Lakes 1 NNE	United States	Record high minimum temperature	10.0 C (50.0 F)	21 of 100 (Routine)
Maple Creek	Canada	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Billings Wtp	United States	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Arad	Romania	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Kirensk	Russia	Record daily precipitation	9.5 mm (0.37 in)	20 of 100 (Routine)
Malta	United States	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Hillsdown	Canada	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Montrose 1	United States	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Montrose #2	United States	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Cadelga	Australia	Record daily precipitation	4.6 mm (0.18 in)	20 of 100 (Routine)
Augusta	United States	Record daily precipitation	5.6 mm (0.22 in)	20 of 100 (Routine)
Centennial Park	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Stroud Post Office	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Larned	United States	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Coupeville 1 S	United States	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Los Lunas	United States	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Sundance	United States	Record daily precipitation	7.4 mm (0.29 in)	20 of 100 (Routine)
Cut Bank AP	United States	Record daily precipitation	4.6 mm (0.18 in)	20 of 100 (Routine)
Darwin Post Office	Australia	Record low maximum temperature	30.6 C (87.1 F)	20 of 100 (Routine)
Edmonton	Canada	Record daily precipitation	9.9 mm (0.39 in)	20 of 100 (Routine)
Dauphin	Canada	Record high minimum temperature	16.1 C (61.0 F)	20 of 100 (Routine)
Aachen	Germany	Record low minimum temperature	2.0 C (35.6 F)	20 of 100 (Routine)
Kalkfontein	South Africa	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Babb 6 NE	United States	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Cascade 5 S	United States	Record daily precipitation	2.5 mm (0.10 in)	20 of 100 (Routine)
Conconully	United States	Record daily precipitation	7.9 mm (0.31 in)	20 of 100 (Routine)
Randwick Bowling Club	Australia	Record daily precipitation	18.0 mm (0.7 in)	19 of 100 (Routine)
Prince Albert	Canada	Record daily precipitation	12.7 mm (0.5 in)	19 of 100 (Routine)
Tombstone	United States	Record high minimum temperature	18.9 C (66.0 F)	19 of 100 (Routine)
Crookston NW Exp STN	United States	Record high minimum temperature	12.2 C (54.0 F)	19 of 100 (Routine)
Schwerin	Germany	Record low minimum temperature	0.0 C (32.0 F)	18 of 100 (Routine)
Caguas	Puerto Rico [United States]	Record daily precipitation	17.5 mm (0.7 in)	18 of 100 (Routine)
Burlington	United States	Record daily precipitation	7.9 mm (0.31 in)	18 of 100 (Routine)
Porthill	United States	Record high minimum temperature	12.2 C (54.0 F)	18 of 100 (Routine)
Ness City	United States	Record daily precipitation	13.7 mm (0.5 in)	18 of 100 (Routine)
Crosby	United States	Record high minimum temperature	11.7 C (53.1 F)	18 of 100 (Routine)
Hansboro 4 NNE	United States	Record high minimum temperature	13.9 C (57.0 F)	18 of 100 (Routine)

Counts by Type and Timescale

207 records

Records set or tied on 1 October 1940 by type: Highest daily maximum 8, Lowest daily maximum 28, Highest daily minimum 51, Lowest daily minimum 21, Heaviest daily rainfall 99.

Records on 1 October 1940 by type
Record type	Records
Highest daily maximum	8
Lowest daily maximum	28
Highest daily minimum	51
Lowest daily minimum	21
Heaviest daily rainfall	99
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 1 October 1940 by timescale: all-time 1, monthly 19, daily 187.

How Much Records Were Beaten By

176 broken records

Margins by which the 176 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.6. Ties are not counted.

Top 20 by Significance

1 October 1940

Top 20 records on 1 October 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 October 1940	Medicine Hat A, CA	daily rain	30.5 mm (1.2 in)	25.7 mm (1.0 in)	40 years	57 of 100 (Notable)
1 October 1940	Hana 354, US	daily rain	62.2 mm (2.4 in)	48.7 mm (1.9 in)	29 years	51 of 100 (Notable)
1 October 1940	Sibasa, ZA	monthly rain	104.9 mm (4.1 in)	34.3 mm (1.4 in)	18 years	46 of 100 (Notable)
1 October 1940	Busby, US	daily rain	27.2 mm (1.1 in)	17.5 mm (0.7 in)	17 years	46 of 100 (Notable)
1 October 1940	Colville, US	all-time rain	47.0 mm (1.9 in)	5.9 mm (0.23 in)	33 years	45 of 100 (Notable)
1 October 1940	Kealia 1112, US	daily rain	77.5 mm (3.1 in)	51.6 mm (2.0 in)	32 years	45 of 100 (Notable)
1 October 1940	Julesburg, US	daily rain	30.5 mm (1.2 in)	22.9 mm (0.9 in)	13 years	40 of 100 (Notable)
1 October 1940	St Albans, CA	monthly high min	15.0 C (59.0 F)	1.7 C (3.1 F)	53 years	34 of 100 (Routine)
1 October 1940	Tshakhuma, ZA	daily rain	59.7 mm (2.4 in)	48.8 mm (1.9 in)	10 years	34 of 100 (Routine)
1 October 1940	Columbia Falls 5 SW, US	daily rain	26.7 mm (1.1 in)	12.0 mm (0.5 in)	30 years	33 of 100 (Routine)
1 October 1940	Sarajevo, BA	daily rain	34.0 mm (1.3 in)	16.5 mm (0.6 in)	33 years	30 of 100 (Routine)
1 October 1940	Haiku 490, US	daily low min	16.7 C (62.1 F)	2.2 C (4.0 F)	27 years	29 of 100 (Routine)
1 October 1940	Saskatoon Diefenbaker Int'l A, CA	monthly high min	11.1 C (52.0 F)	2.2 C (4.0 F)	31 years	27 of 100 (Routine)
1 October 1940	Russell, CA	monthly high min	14.4 C (57.9 F)	3.8 C (6.8 F)	16 years	27 of 100 (Routine)
1 October 1940	Chaplin, CA	monthly high min	13.9 C (57.0 F)	2.8 C (5.0 F)	16 years	24 of 100 (Routine)
1 October 1940	Brandon Cda, CA	monthly high min	14.4 C (57.9 F)	1.6 C (2.9 F)	25 years	24 of 100 (Routine)
1 October 1940	Somerville 4 NW, US	daily low max	13.9 C (57.0 F)	0.5 C (0.9 F)	56 years	23 of 100 (Routine)
1 October 1940	Osijek, HR	daily rain	32.3 mm (1.3 in)	8.4 mm (0.33 in)	29 years	22 of 100 (Routine)
1 October 1940	Sivakasi, IN	daily rain	30.2 mm (1.2 in)	18.8 mm (0.7 in)	37 years	22 of 100 (Routine)
1 October 1940	Palmaryville, ZA	daily rain	45.5 mm (1.8 in)	15.0 mm (0.6 in)	29 years	22 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 1940

Records set or tied on this calendar date in each year from 1813 to 1940. 1940 had 207 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 1940-10-01: 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 10	155
10 to 20	14
20 to 30	3
30 to 40	1
40 to 50	2
50 to 60	1