Weather Records on 9 September 1940

294 weather records were set or tied worldwide on 9 September 1940. Highest significance: Hvar, HR.

Key Facts for 9 September 1940

On 9 September 1940, 294 weather records were set or tied at long-record stations worldwide.
154 were record highs and 21 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 281 daily.
Hvar set a daily record precipitation of 45.2 mm (1.8 in) on 9 September 1940.
Across 162 earlier years (1806 to 2026) the same calendar date averaged 462 records.

Record Map

294 stations

294 station records on 9 September 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 September 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hvar	Croatia	Record daily precipitation	45.2 mm (1.8 in)	49 of 100 (Notable)
Cheesman	United States	Record daily precipitation	35.6 mm (1.4 in)	46 of 100 (Notable)
Tanjavur	India	Record daily precipitation	80.3 mm (3.2 in)	44 of 100 (Notable)
Irwin	United States	Record daily precipitation	56.6 mm (2.2 in)	44 of 100 (Notable)
Ko253Lpatti Sr	India	Record daily precipitation	53.1 mm (2.1 in)	42 of 100 (Notable)
Badami	India	Record daily precipitation	63.5 mm (2.5 in)	40 of 100 (Notable)
Weissenburg	Germany	Record daily precipitation	33.6 mm (1.3 in)	39 of 100 (Notable)
Idaho Springs	United States	Record daily precipitation	32.0 mm (1.3 in)	39 of 100 (Notable)
Gauribidanur	India	Record daily precipitation	110.7 mm (4.4 in)	38 of 100 (Notable)
Ridgway	United States	Record daily precipitation	60.5 mm (2.4 in)	37 of 100 (Notable)
Gollhofen	Germany	Record daily precipitation	27.5 mm (1.1 in)	36 of 100 (Notable)
Ottapidaram	India	Record daily precipitation	35.6 mm (1.4 in)	33 of 100 (Routine)
Ft Collins	United States	Record daily precipitation	38.9 mm (1.5 in)	33 of 100 (Routine)
Kunzelsau	Germany	Record daily precipitation	36.1 mm (1.4 in)	32 of 100 (Routine)
Confluence 1 NW	United States	Record daily precipitation	46.5 mm (1.8 in)	31 of 100 (Routine)
Orillia	Canada	Record daily precipitation	38.1 mm (1.5 in)	30 of 100 (Routine)
Boulder	United States	Record daily precipitation	28.2 mm (1.1 in)	29 of 100 (Routine)
Clearfield	United States	Record daily precipitation	54.6 mm (2.1 in)	29 of 100 (Routine)
Fort McPherson	Canada	Record high minimum temperature	13.3 C (55.9 F)	28 of 100 (Routine)
Forest City 2 NNE	United States	Record daily precipitation	57.2 mm (2.3 in)	28 of 100 (Routine)
Sidlaghatta	India	Record daily precipitation	86.4 mm (3.4 in)	27 of 100 (Routine)
Sendamangalam	India	Record daily precipitation	70.4 mm (2.8 in)	27 of 100 (Routine)
Winnebago	United States	Record daily precipitation	42.9 mm (1.7 in)	27 of 100 (Routine)
Glacier	Canada	Record high minimum temperature	9.4 C (48.9 F)	26 of 100 (Routine)
Heggaddevankote	India	Record daily precipitation	36.8 mm (1.4 in)	26 of 100 (Routine)
Nanjangud	India	Record daily precipitation	29.2 mm (1.1 in)	25 of 100 (Routine)
Urvakonda	India	Record daily precipitation	96.8 mm (3.8 in)	24 of 100 (Routine)
Moscow U of I	United States	Record high minimum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Waverly	United States	Record daily precipitation	57.2 mm (2.3 in)	24 of 100 (Routine)
Olin	United States	Record daily precipitation	45.2 mm (1.8 in)	23 of 100 (Routine)
New Westminster	Canada	Record high maximum temperature	30.0 C (86.0 F)	22 of 100 (Routine)
Minnedosa	Canada	Record low maximum temperature	11.1 C (52.0 F)	22 of 100 (Routine)
Vallam	India	Record daily precipitation	67.3 mm (2.6 in)	22 of 100 (Routine)
Bee Branch	United States	Record high minimum temperature	25.0 C (77.0 F)	22 of 100 (Routine)
Shoshone 1 WNW	United States	Record high minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Clearfield Climat	United States	Record daily precipitation	54.6 mm (2.1 in)	22 of 100 (Routine)
Lakeside	United States	Record high minimum temperature	18.3 C (64.9 F)	22 of 100 (Routine)
Spokane Intl AP	United States	Record high minimum temperature	15.6 C (60.1 F)	22 of 100 (Routine)
Hindupur	India	Record daily precipitation	53.3 mm (2.1 in)	21 of 100 (Routine)
Ramnagar	India	Record daily precipitation	58.7 mm (2.3 in)	21 of 100 (Routine)
Forest Grove	United States	Record high minimum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Joseph	United States	Record high minimum temperature	12.8 C (55.0 F)	21 of 100 (Routine)
Olga 2 SE	United States	Record high maximum temperature	28.3 C (82.9 F)	21 of 100 (Routine)
Pullman Exp STN	United States	Record high minimum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Pembroke Eddy Match	Canada	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Trier-Zewen	Germany	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Ulm	Germany	Record daily precipitation	22.2 mm (0.9 in)	20 of 100 (Routine)
Ft Bidwell	United States	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Scottsburg	United States	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Beowawe	United States	Record daily precipitation	3.6 mm (0.14 in)	20 of 100 (Routine)
Lindenberg	Germany	Record daily precipitation	14.6 mm (0.6 in)	20 of 100 (Routine)
Jena Sternwarte	Germany	Record daily precipitation	9.8 mm (0.39 in)	20 of 100 (Routine)
Ebrach	Germany	Record daily precipitation	12.1 mm (0.5 in)	20 of 100 (Routine)
Magdeburg	Germany	Record daily precipitation	10.0 mm (0.4 in)	20 of 100 (Routine)
Battle Mtn	United States	Record daily precipitation	2.5 mm (0.10 in)	20 of 100 (Routine)
Hope Little Mountain	Canada	Record high maximum temperature	34.4 C (93.9 F)	20 of 100 (Routine)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	33.3 mm (1.3 in)	20 of 100 (Routine)
Stuttgart	Germany	Record daily precipitation	27.0 mm (1.1 in)	20 of 100 (Routine)
Koratagere	India	Record daily precipitation	59.7 mm (2.4 in)	20 of 100 (Routine)
Westernport	United States	Record daily precipitation	31.8 mm (1.3 in)	20 of 100 (Routine)

Counts by Type and Timescale

294 records

Records set or tied on 9 September 1940 by type: Highest daily maximum 57, Lowest daily maximum 15, Highest daily minimum 97, Lowest daily minimum 6, Heaviest daily rainfall 119.

Records on 9 September 1940 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	15
Highest daily minimum	97
Lowest daily minimum	6
Heaviest daily rainfall	119
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 9 September 1940 by timescale: all-time 0, monthly 13, daily 281.

How Much Records Were Beaten By

233 broken records

Margins by which the 233 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 66.1. Ties are not counted.

Top 20 by Significance

9 September 1940

Top 20 records on 9 September 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 September 1940	Hvar, HR	daily rain	45.2 mm (1.8 in)	32.6 mm (1.3 in)	62 years	49 of 100 (Notable)
9 September 1940	Cheesman, US	daily rain	35.6 mm (1.4 in)	30.0 mm (1.2 in)	10 years	46 of 100 (Notable)
9 September 1940	Tanjavur, IN	daily rain	80.3 mm (3.2 in)	66.1 mm (2.6 in)	17 years	44 of 100 (Notable)
9 September 1940	Irwin, US	daily rain	56.6 mm (2.2 in)	33.0 mm (1.3 in)	30 years	44 of 100 (Notable)
9 September 1940	Ko253Lpatti Sr, IN	daily rain	53.1 mm (2.1 in)	39.6 mm (1.6 in)	34 years	42 of 100 (Notable)
9 September 1940	Badami, IN	daily rain	63.5 mm (2.5 in)	50.3 mm (2.0 in)	32 years	40 of 100 (Notable)
9 September 1940	Weissenburg, DE	daily rain	33.6 mm (1.3 in)	12.2 mm (0.5 in)	42 years	39 of 100 (Notable)
9 September 1940	Idaho Springs, US	daily rain	32.0 mm (1.3 in)	25.1 mm (1.0 in)	7 years	39 of 100 (Notable)
9 September 1940	Gauribidanur, IN	daily rain	110.7 mm (4.4 in)	63.2 mm (2.5 in)	9 years	38 of 100 (Notable)
9 September 1940	Ridgway, US	daily rain	60.5 mm (2.4 in)	32.8 mm (1.3 in)	11 years	37 of 100 (Notable)
9 September 1940	Gollhofen, DE	daily rain	27.5 mm (1.1 in)	12.9 mm (0.5 in)	34 years	36 of 100 (Notable)
9 September 1940	Ottapidaram, IN	daily rain	35.6 mm (1.4 in)	32.3 mm (1.3 in)	19 years	33 of 100 (Routine)
9 September 1940	Ft Collins, US	daily rain	38.9 mm (1.5 in)	23.4 mm (0.9 in)	28 years	33 of 100 (Routine)
9 September 1940	Kunzelsau, DE	daily rain	36.1 mm (1.4 in)	10.3 mm (0.4 in)	40 years	32 of 100 (Routine)
9 September 1940	Confluence 1 NW, US	daily rain	46.5 mm (1.8 in)	21.1 mm (0.8 in)	29 years	31 of 100 (Routine)
9 September 1940	Orillia, CA	daily rain	38.1 mm (1.5 in)	7.1 mm (0.28 in)	54 years	30 of 100 (Routine)
9 September 1940	Boulder, US	daily rain	28.2 mm (1.1 in)	17.8 mm (0.7 in)	33 years	29 of 100 (Routine)
9 September 1940	Clearfield, US	daily rain	54.6 mm (2.1 in)	40.9 mm (1.6 in)	11 years	29 of 100 (Routine)
9 September 1940	Fort McPherson, CA	daily high min	13.3 C (55.9 F)	5.5 C (9.9 F)	41 years	28 of 100 (Routine)
9 September 1940	Forest City 2 NNE, US	daily rain	57.2 mm (2.3 in)	20.4 mm (0.8 in)	39 years	28 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 1940

Records set or tied on this calendar date in each year from 1806 to 1940. 1940 had 294 records.

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

Records on 09-09 in each year
Year	Records
1806	1
1812	1
1813	1
1814	2
1834	1
1836	1
1845	1
1847	1
1848	1
1849	2
1850	1
1854	1
1864	2
1865	3
1866	3
1867	1
1869	1
1871	1
1873	1
1878	1
1879	1
1880	2
1883	3
1884	4
1886	1
1888	4
1889	1
1890	1
1891	1
1892	4
1893	4
1894	3
1895	7
1897	3
1898	5
1899	6
1900	1
1901	4
1902	5
1903	14
1904	9
1905	8
1906	24
1907	9
1908	5
1909	9
1910	17
1911	27
1912	48
1913	12
1914	69
1915	48
1916	16
1917	44
1918	40
1919	74
1920	145
1921	92
1922	115
1923	58
1924	232
1925	248
1926	168
1927	246
1928	108
1929	362
1930	211
1931	558
1932	302
1933	433
1934	256
1935	461
1936	297
1937	242
1938	416
1939	429
1940	294
1941	763
1942	357
1943	596
1944	719
1945	355
1946	366
1947	465
1948	307
1949	1,407
1950	426
1951	338
1952	511
1953	344
1954	283
1955	608
1956	742
1957	390
1958	419
1959	736
1960	492
1961	383
1962	847
1963	400
1964	488
1965	326
1966	366
1967	367
1968	440
1969	603
1970	584
1971	498
1972	464
1973	517
1974	689
1975	555
1976	773
1977	410
1978	702
1979	878
1980	829
1981	1,011
1982	814
1983	958
1984	1,304
1985	1,269
1986	1,026
1987	676
1988	836
1989	983
1990	762
1991	882
1992	620
1993	886
1994	892
1995	937
1996	809
1997	837
1998	1,667
1999	1,013
2000	811
2001	1,647
2002	1,355
2003	786
2004	1,603
2005	1,068
2006	917
2007	948
2008	1,161
2009	792
2010	1,049
2011	1,328
2012	681
2013	974
2014	590
2015	806
2016	1,210
2017	661
2018	876
2019	953
2020	2,579
2021	1,458
2022	1,094
2023	1,222
2024	1,146
2025	520
2026	815

Download the Data

Data for records on 1940-09-09: 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	188
10 to 20	23
20 to 30	9
30 to 40	7
40 to 50	2
50 to 60	2
60 to 70	2