Weather Records on 25 August 1940

658 weather records were set or tied worldwide on 25 August 1940. Highest significance: Honokane 181.1, US.

Key Facts for 25 August 1940

On 25 August 1940, 658 weather records were set or tied at long-record stations worldwide.
76 were record highs and 426 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 101 monthly and 557 daily.
Honokane 181.1 set a monthly record daily precipitation of 238.5 mm (9.4 in) on 25 August 1940.
Across 168 earlier years (1796 to 2026) the same calendar date averaged 436 records.

Record Map

658 stations

658 station records on 25 August 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 August 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Honokane 181.1	United States	Record daily precipitation	238.5 mm (9.4 in)	58 of 100 (Notable)
Gangapur Sahara	India	Record daily precipitation	177.8 mm (7.0 in)	56 of 100 (Notable)
Keanae 346	United States	Record daily precipitation	173.7 mm (6.8 in)	53 of 100 (Notable)
Bakani (Rallai)	India	Record daily precipitation	165.1 mm (6.5 in)	48 of 100 (Notable)
Pontiac Wwtp	United States	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Dug (Dag)	India	Record daily precipitation	346.2 mm (13.6 in)	46 of 100 (Notable)
Salzburg	Austria	Record low minimum temperature	3.6 C (38.5 F)	44 of 100 (Notable)
Brodhead Wwtp	United States	Record daily precipitation	63.5 mm (2.5 in)	44 of 100 (Notable)
Burnett 3 S	United States	Record daily precipitation	51.6 mm (2.0 in)	44 of 100 (Notable)
Holland Wtp	United States	Record daily precipitation	46.5 mm (1.8 in)	41 of 100 (Notable)
Newaygo Hardy Dam	United States	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Osage	United States	Record daily precipitation	146.1 mm (5.8 in)	40 of 100 (Notable)
Charlotte	United States	Record daily precipitation	64.8 mm (2.6 in)	40 of 100 (Notable)
Mtn View 91	United States	Record daily precipitation	115.8 mm (4.6 in)	40 of 100 (Notable)
Kohala Mis 175.1	United States	Record daily precipitation	44.7 mm (1.8 in)	39 of 100 (Notable)
Svyatoy Nos;Cape(Closed)	Russia	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Waukesha Wwtp	United States	Record daily precipitation	48.3 mm (1.9 in)	38 of 100 (Notable)
Melbourne Regional Office	Australia	Record high maximum temperature	24.0 C (75.2 F)	37 of 100 (Notable)
Howell Wwtp	United States	Record daily precipitation	30.2 mm (1.2 in)	37 of 100 (Notable)
Brockville	Canada	Record low minimum temperature	3.3 C (37.9 F)	36 of 100 (Notable)
Niulii 179	United States	Record daily precipitation	35.1 mm (1.4 in)	36 of 100 (Notable)
Muskegon Co AP	United States	Record daily precipitation	46.5 mm (1.8 in)	36 of 100 (Notable)
Northwood	United States	Record daily precipitation	64.8 mm (2.6 in)	35 of 100 (Notable)
Goderich	Canada	Record low minimum temperature	4.4 C (39.9 F)	34 of 100 (Routine)
Rajapur	India	Record daily precipitation	139.7 mm (5.5 in)	34 of 100 (Routine)
Merta City	India	Record daily precipitation	114.3 mm (4.5 in)	34 of 100 (Routine)
Hiram	United States	Record low maximum temperature	12.8 C (55.0 F)	34 of 100 (Routine)
Simcoe	Canada	Record low minimum temperature	2.2 C (36.0 F)	33 of 100 (Routine)
Norwalk	United States	Record low minimum temperature	1.1 C (34.0 F)	33 of 100 (Routine)
Elkader 6 SSW	United States	Record daily precipitation	34.0 mm (1.3 in)	33 of 100 (Routine)
Grand Rapids Wb City	United States	Record daily precipitation	51.3 mm (2.0 in)	33 of 100 (Routine)
Newark Liberty Intl AP	United States	Record low minimum temperature	8.9 C (48.0 F)	33 of 100 (Routine)
Mt Clemens Ang Base	United States	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Chatham 2	Canada	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Gargoti	India	Record daily precipitation	71.6 mm (2.8 in)	32 of 100 (Routine)
Innsbruck	Austria	Record low minimum temperature	3.3 C (37.9 F)	31 of 100 (Routine)
Chhipabarod	India	Record daily precipitation	196.1 mm (7.7 in)	31 of 100 (Routine)
Concord	United States	Record low minimum temperature	3.3 C (37.9 F)	31 of 100 (Routine)
Toledo Blade	United States	Record low maximum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Prairie du Chien	United States	Record daily precipitation	66.5 mm (2.6 in)	31 of 100 (Routine)
Baltimore Customs House	United States	Record low maximum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Indore	India	Record daily precipitation	64.3 mm (2.5 in)	30 of 100 (Routine)
Lancaster 4 WSW	United States	Record daily precipitation	43.7 mm (1.7 in)	30 of 100 (Routine)
Ridgetown	Canada	Record low maximum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Blue Hill Coop	United States	Record low minimum temperature	5.0 C (41.0 F)	29 of 100 (Routine)
Towanda 1 S	United States	Record low minimum temperature	0.6 C (33.1 F)	29 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record high maximum temperature	26.2 C (79.2 F)	28 of 100 (Routine)
Iklera(Aklera)	India	Record daily precipitation	126.5 mm (5.0 in)	28 of 100 (Routine)
Arhangelsk	Russia	Record high maximum temperature	30.6 C (87.1 F)	28 of 100 (Routine)
Dover	United States	Record low minimum temperature	3.9 C (39.0 F)	28 of 100 (Routine)
Port Jervis	United States	Record low maximum temperature	12.8 C (55.0 F)	28 of 100 (Routine)
Tropic	United States	Record low maximum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
Olaa 92	United States	Record daily precipitation	56.1 mm (2.2 in)	28 of 100 (Routine)
Atlantic City Marina	United States	Record low maximum temperature	20.0 C (68.0 F)	28 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record low minimum temperature	5.4 C (41.7 F)	27 of 100 (Routine)
Manohar Thana	India	Record daily precipitation	117.6 mm (4.6 in)	27 of 100 (Routine)
Amherst	United States	Record low minimum temperature	1.1 C (34.0 F)	27 of 100 (Routine)
S Haven	United States	Record daily precipitation	39.4 mm (1.6 in)	27 of 100 (Routine)
Carmel	United States	Record low minimum temperature	1.7 C (35.1 F)	27 of 100 (Routine)
Warren	United States	Record low maximum temperature	15.6 C (60.1 F)	27 of 100 (Routine)

Counts by Type and Timescale

658 records

Records set or tied on 25 August 1940 by type: Highest daily maximum 15, Lowest daily maximum 254, Highest daily minimum 61, Lowest daily minimum 172, Heaviest daily rainfall 156.

Records on 25 August 1940 by type
Record type	Records
Highest daily maximum	15
Lowest daily maximum	254
Highest daily minimum	61
Lowest daily minimum	172
Heaviest daily rainfall	156
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 25 August 1940 by timescale: all-time 0, monthly 101, daily 557.

How Much Records Were Beaten By

524 broken records

Margins by which the 524 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 296.7. Ties are not counted.

Top 20 by Significance

25 August 1940

Top 20 records on 25 August 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 August 1940	Honokane 181.1, US	monthly rain	238.5 mm (9.4 in)	78.7 mm (3.1 in)	26 years	58 of 100 (Notable)
25 August 1940	Gangapur Sahara, IN	monthly rain	177.8 mm (7.0 in)	86.4 mm (3.4 in)	11 years	56 of 100 (Notable)
25 August 1940	Keanae 346, US	daily rain	173.7 mm (6.8 in)	121.4 mm (4.8 in)	34 years	53 of 100 (Notable)
25 August 1940	Bakani (Rallai), IN	daily rain	165.1 mm (6.5 in)	99.1 mm (3.9 in)	27 years	48 of 100 (Notable)
25 August 1940	Pontiac Wwtp, US	daily rain	50.8 mm (2.0 in)	40.1 mm (1.6 in)	30 years	47 of 100 (Notable)
25 August 1940	Dug (Dag), IN	daily rain	346.2 mm (13.6 in)	296.7 mm (11.7 in)	7 years	46 of 100 (Notable)
25 August 1940	Salzburg, AT	monthly low min	3.6 C (38.5 F)	2.6 C (4.7 F)	63 years	44 of 100 (Notable)
25 August 1940	Brodhead Wwtp, US	daily rain	63.5 mm (2.5 in)	48.0 mm (1.9 in)	30 years	44 of 100 (Notable)
25 August 1940	Burnett 3 S, US	daily rain	51.6 mm (2.0 in)	35.1 mm (1.4 in)	30 years	44 of 100 (Notable)
25 August 1940	Holland Wtp, US	daily rain	46.5 mm (1.8 in)	38.9 mm (1.5 in)	18 years	41 of 100 (Notable)
25 August 1940	Newaygo Hardy Dam, US	daily rain	44.5 mm (1.8 in)	35.6 mm (1.4 in)	30 years	41 of 100 (Notable)
25 August 1940	Osage, US	monthly rain	146.1 mm (5.8 in)	33.8 mm (1.3 in)	12 years	40 of 100 (Notable)
25 August 1940	Charlotte, US	daily rain	64.8 mm (2.6 in)	30.5 mm (1.2 in)	30 years	40 of 100 (Notable)
25 August 1940	Mtn View 91, US	daily rain	115.8 mm (4.6 in)	75.7 mm (3.0 in)	29 years	40 of 100 (Notable)
25 August 1940	Kohala Mis 175.1, US	daily rain	44.7 mm (1.8 in)	29.7 mm (1.2 in)	11 years	39 of 100 (Notable)
25 August 1940	Svyatoy Nos;Cape(Closed), RU	daily high min	18.9 C (66.0 F)	7.0 C (12.6 F)	31 years	38 of 100 (Notable)
25 August 1940	Waukesha Wwtp, US	daily rain	48.3 mm (1.9 in)	29.8 mm (1.2 in)	30 years	38 of 100 (Notable)
25 August 1940	Melbourne Regional Office, AU	daily high max	24.0 C (75.2 F)	1.7 C (3.1 F)	77 years	37 of 100 (Notable)
25 August 1940	Howell Wwtp, US	daily rain	30.2 mm (1.2 in)	23.8 mm (0.9 in)	47 years	37 of 100 (Notable)
25 August 1940	Brockville, CA	monthly low min	3.3 C (37.9 F)	0.6 C (1.1 F)	65 years	36 of 100 (Notable)

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

1796 to 1940

Records set or tied on this calendar date in each year from 1796 to 1940. 1940 had 658 records.

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

Records on 08-25 in each year
Year	Records
1796	1
1801	1
1802	1
1807	2
1809	1
1813	1
1814	1
1816	1
1818	2
1837	1
1838	2
1839	1
1848	1
1852	1
1855	2
1859	1
1861	2
1864	1
1867	2
1869	1
1870	1
1871	2
1872	2
1875	1
1876	5
1877	3
1879	3
1880	2
1884	1
1885	2
1886	1
1887	1
1889	1
1890	3
1892	4
1893	8
1894	2
1895	4
1896	2
1897	2
1898	2
1899	5
1900	13
1901	11
1902	6
1903	13
1904	11
1905	12
1906	29
1907	15
1908	13
1909	22
1910	32
1911	32
1912	32
1913	31
1914	30
1915	94
1916	18
1917	65
1918	37
1919	172
1920	174
1921	50
1922	70
1923	117
1924	402
1925	145
1926	224
1927	356
1928	167
1929	174
1930	247
1931	251
1932	270
1933	307
1934	457
1935	317
1936	859
1937	333
1938	620
1939	366
1940	658
1941	474
1942	514
1943	496
1944	589
1945	462
1946	305
1947	627
1948	876
1949	281
1950	327
1951	352
1952	585
1953	461
1954	520
1955	711
1956	273
1957	479
1958	958
1959	576
1960	585
1961	487
1962	398
1963	510
1964	557
1965	401
1966	715
1967	439
1968	596
1969	631
1970	721
1971	628
1972	596
1973	537
1974	466
1975	650
1976	459
1977	731
1978	702
1979	828
1980	750
1981	671
1982	907
1983	1,277
1984	694
1985	1,048
1986	778
1987	1,533
1988	815
1989	918
1990	817
1991	688
1992	1,680
1993	1,137
1994	617
1995	1,206
1996	1,058
1997	1,553
1998	1,138
1999	895
2000	790
2001	1,021
2002	1,073
2003	872
2004	947
2005	874
2006	1,020
2007	1,345
2008	1,026
2009	824
2010	1,321
2011	1,332
2012	709
2013	619
2014	853
2015	1,157
2016	887
2017	432
2018	438
2019	708
2020	931
2021	597
2022	672
2023	1,565
2024	909
2025	1,071
2026	886

Download the Data

Data for records on 1940-08-25: 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 50	514
50 to 100	8
100 to 150	1
150 to 200	0
200 to 250	0
250 to 300	1