Weather Records on 25 July 1966

456 weather records were set or tied worldwide on 25 July 1966. Highest significance: Dehradun, IN.

Key Facts for 25 July 1966

On 25 July 1966, 456 weather records were set or tied at long-record stations worldwide.
117 were record highs and 146 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 17 monthly and 436 daily.
Dehradun set an all-time record daily precipitation of 487.0 mm (19.2 in) on 25 July 1966.
Across 160 earlier years (1795 to 2026) the same calendar date averaged 456 records.

Record Map

456 stations

456 station records on 25 July 1966 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 July 1966: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dehradun	India	Record daily precipitation	487.0 mm (19.2 in)	70 of 100 (Major)
Waialua 847	United States	Record daily precipitation	71.1 mm (2.8 in)	67 of 100 (Major)
Kemoo Camp 8 855	United States	Record daily precipitation	77.5 mm (3.1 in)	60 of 100 (Major)
Razole(Rajole)	India	Record daily precipitation	107.9 mm (4.2 in)	56 of 100 (Notable)
Vastervik	Sweden	Record daily precipitation	41.1 mm (1.6 in)	55 of 100 (Notable)
Hillsboro	United States	Record daily precipitation	67.6 mm (2.7 in)	54 of 100 (Notable)
Bhimavaram	India	Record daily precipitation	172.7 mm (6.8 in)	53 of 100 (Notable)
Narsapur	India	Record daily precipitation	177.3 mm (7.0 in)	51 of 100 (Notable)
Medicine Hat A	Canada	Record daily precipitation	57.4 mm (2.3 in)	49 of 100 (Notable)
Roorkee	India	Record daily precipitation	237.7 mm (9.4 in)	48 of 100 (Notable)
Hollis 5E	United States	Record daily precipitation	50.0 mm (2.0 in)	48 of 100 (Notable)
Kaikalur	India	Record daily precipitation	130.5 mm (5.1 in)	46 of 100 (Notable)
Vega 2NW	United States	Record daily precipitation	55.9 mm (2.2 in)	46 of 100 (Notable)
Seminole	United States	Record daily precipitation	82.6 mm (3.3 in)	45 of 100 (Notable)
Gannavaram	India	Record daily precipitation	119.0 mm (4.7 in)	44 of 100 (Notable)
Hiawatha	United States	Record daily precipitation	25.9 mm (1.0 in)	44 of 100 (Notable)
Akhty	Russia	Record high minimum temperature	23.9 C (75.0 F)	43 of 100 (Notable)
Mussoorie	India	Record daily precipitation	150.0 mm (5.9 in)	42 of 100 (Notable)
Sviland	Norway	Record daily precipitation	53.7 mm (2.1 in)	42 of 100 (Notable)
Soyland I Gjesdal	Norway	Record daily precipitation	59.0 mm (2.3 in)	40 of 100 (Notable)
Grapevine Dam	United States	Record daily precipitation	52.6 mm (2.1 in)	40 of 100 (Notable)
Launceston (Kings Meadows)	Australia	Record daily precipitation	46.5 mm (1.8 in)	39 of 100 (Notable)
Zacapu (Smn)	Mexico	Record daily precipitation	47.0 mm (1.9 in)	39 of 100 (Notable)
Orebro	Sweden	Record daily precipitation	25.2 mm (1.0 in)	39 of 100 (Notable)
Sharon Springs	United States	Record daily precipitation	48.3 mm (1.9 in)	39 of 100 (Notable)
Mummidivaram	India	Record daily precipitation	83.0 mm (3.3 in)	38 of 100 (Notable)
Gudivada	India	Record daily precipitation	95.0 mm (3.7 in)	38 of 100 (Notable)
Sogndal - Selseng	Norway	Record daily precipitation	27.5 mm (1.1 in)	37 of 100 (Notable)
Linkoeping-Malmslaett	Sweden	Record daily precipitation	25.0 mm (1.0 in)	37 of 100 (Notable)
Wetaskiwin	Canada	Record low maximum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Sauda	Norway	Record daily precipitation	40.4 mm (1.6 in)	36 of 100 (Notable)
Hawthorne AP	United States	Record high maximum temperature	42.8 C (109.0 F)	35 of 100 (Notable)
Elderslie	Australia	Record daily precipitation	25.1 mm (1.0 in)	34 of 100 (Routine)
Muskogee	United States	Record daily precipitation	84.3 mm (3.3 in)	34 of 100 (Routine)
Yerevan	Armenia	Record high maximum temperature	39.8 C (103.6 F)	33 of 100 (Routine)
Beechy	Canada	Record daily precipitation	42.4 mm (1.7 in)	33 of 100 (Routine)
Tiruvur(Tiruvvru)	India	Record daily precipitation	80.0 mm (3.1 in)	33 of 100 (Routine)
Manginapudi	India	Record daily precipitation	87.6 mm (3.4 in)	33 of 100 (Routine)
Valle de Santiago	Mexico	Record daily precipitation	42.9 mm (1.7 in)	33 of 100 (Routine)
Olands Norra Udde	Sweden	Record daily precipitation	39.0 mm (1.5 in)	33 of 100 (Routine)
Escanaba	United States	Record high maximum temperature	33.3 C (91.9 F)	33 of 100 (Routine)
Bethel AP	United States	Record daily precipitation	31.0 mm (1.2 in)	33 of 100 (Routine)
Sion	Canada	Record low maximum temperature	10.0 C (50.0 F)	32 of 100 (Routine)
Campsie	Canada	Record low maximum temperature	10.6 C (51.1 F)	31 of 100 (Routine)
Paisley	United States	Record low minimum temperature	2.2 C (36.0 F)	31 of 100 (Routine)
Chaplin	Canada	Record low maximum temperature	13.3 C (55.9 F)	30 of 100 (Routine)
Chalisgaon	India	Record daily precipitation	67.2 mm (2.6 in)	30 of 100 (Routine)
Hinganghat	India	Record daily precipitation	94.0 mm (3.7 in)	30 of 100 (Routine)
Rauland	Norway	Record daily precipitation	30.9 mm (1.2 in)	30 of 100 (Routine)
Kamen-Na-Obi	Russia	Record low minimum temperature	1.5 C (34.7 F)	30 of 100 (Routine)
Evanston 1 E	United States	Record high minimum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Homer AP	United States	Record high maximum temperature	23.9 C (75.0 F)	30 of 100 (Routine)
Nome AP	United States	Record high maximum temperature	24.4 C (75.9 F)	30 of 100 (Routine)
Isleworth	United States	Record daily precipitation	64.3 mm (2.5 in)	29 of 100 (Routine)
Laghouat	Algeria	Record high minimum temperature	27.2 C (81.0 F)	28 of 100 (Routine)
Mount Barker	Australia	Record daily precipitation	29.5 mm (1.2 in)	28 of 100 (Routine)
Calmar	Canada	Record low maximum temperature	11.1 C (52.0 F)	28 of 100 (Routine)
Kindersley	Canada	Record low maximum temperature	13.3 C (55.9 F)	28 of 100 (Routine)
Tbilisi	Georgia	Record high minimum temperature	24.3 C (75.7 F)	28 of 100 (Routine)
Voravakal(Varaka)	India	Record daily precipitation	52.1 mm (2.1 in)	28 of 100 (Routine)

Counts by Type and Timescale

456 records

Records set or tied on 25 July 1966 by type: Highest daily maximum 54, Lowest daily maximum 86, Highest daily minimum 63, Lowest daily minimum 60, Heaviest daily rainfall 193.

Records on 25 July 1966 by type
Record type	Records
Highest daily maximum	54
Lowest daily maximum	86
Highest daily minimum	63
Lowest daily minimum	60
Heaviest daily rainfall	193
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 25 July 1966 by timescale: all-time 3, monthly 17, daily 436.

How Much Records Were Beaten By

374 broken records

Margins by which the 374 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 154.8. Ties are not counted.

Top 20 by Significance

25 July 1966

Top 20 records on 25 July 1966 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 July 1966	Dehradun, IN	all-time rain	487.0 mm (19.2 in)	154.8 mm (6.1 in)	14 years	70 of 100 (Major)
25 July 1966	Waialua 847, US	monthly rain	71.1 mm (2.8 in)	25.4 mm (1.0 in)	42 years	67 of 100 (Major)
25 July 1966	Kemoo Camp 8 855, US	monthly rain	77.5 mm (3.1 in)	45.0 mm (1.8 in)	24 years	60 of 100 (Major)
25 July 1966	Razole(Rajole), IN	daily rain	107.9 mm (4.2 in)	60.9 mm (2.4 in)	48 years	56 of 100 (Notable)
25 July 1966	Vastervik, SE	daily rain	41.1 mm (1.6 in)	21.6 mm (0.9 in)	64 years	55 of 100 (Notable)
25 July 1966	Hillsboro, US	daily rain	67.6 mm (2.7 in)	54.9 mm (2.2 in)	55 years	54 of 100 (Notable)
25 July 1966	Bhimavaram, IN	monthly rain	172.7 mm (6.8 in)	56.9 mm (2.2 in)	7 years	53 of 100 (Notable)
25 July 1966	Narsapur, IN	daily rain	177.3 mm (7.0 in)	114.8 mm (4.5 in)	17 years	51 of 100 (Notable)
25 July 1966	Medicine Hat A, CA	monthly rain	57.4 mm (2.3 in)	8.9 mm (0.35 in)	65 years	49 of 100 (Notable)
25 July 1966	Roorkee, IN	monthly rain	237.7 mm (9.4 in)	47.5 mm (1.9 in)	54 years	48 of 100 (Notable)
25 July 1966	Hollis 5E, US	daily rain	50.0 mm (2.0 in)	38.6 mm (1.5 in)	40 years	48 of 100 (Notable)
25 July 1966	Kaikalur, IN	monthly rain	130.5 mm (5.1 in)	28.9 mm (1.1 in)	43 years	46 of 100 (Notable)
25 July 1966	Vega 2NW, US	daily rain	55.9 mm (2.2 in)	51.3 mm (2.0 in)	8 years	46 of 100 (Notable)
25 July 1966	Seminole, US	daily rain	82.6 mm (3.3 in)	69.6 mm (2.7 in)	8 years	45 of 100 (Notable)
25 July 1966	Gannavaram, IN	daily rain	119.0 mm (4.7 in)	44.1 mm (1.7 in)	47 years	44 of 100 (Notable)
25 July 1966	Hiawatha, US	daily rain	25.9 mm (1.0 in)	12.9 mm (0.5 in)	39 years	44 of 100 (Notable)
25 July 1966	Akhty, RU	all-time high min	23.9 C (75.0 F)	2.0 C (3.6 F)	35 years	43 of 100 (Notable)
25 July 1966	Mussoorie, IN	daily rain	150.0 mm (5.9 in)	57.3 mm (2.3 in)	64 years	42 of 100 (Notable)
25 July 1966	Sviland, NO	daily rain	53.7 mm (2.1 in)	21.5 mm (0.8 in)	40 years	42 of 100 (Notable)
25 July 1966	Soyland I Gjesdal, NO	daily rain	59.0 mm (2.3 in)	23.8 mm (0.9 in)	33 years	40 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

1795 to 1966

Records set or tied on this calendar date in each year from 1795 to 1966. 1966 had 456 records.

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

Records on 07-25 in each year
Year	Records
1795	2
1801	1
1832	2
1836	1
1839	2
1840	1
1846	2
1847	1
1860	1
1861	1
1863	1
1867	1
1870	1
1872	4
1873	1
1874	1
1875	2
1876	2
1878	1
1881	1
1882	1
1884	2
1885	4
1888	1
1889	6
1890	2
1891	2
1893	2
1894	4
1895	4
1896	1
1897	5
1898	3
1899	1
1900	3
1901	5
1902	15
1903	11
1904	18
1905	8
1906	13
1907	14
1908	15
1909	7
1910	26
1911	48
1912	44
1913	19
1914	28
1915	21
1916	48
1917	44
1918	91
1919	36
1920	71
1921	47
1922	149
1923	92
1924	175
1925	120
1926	119
1927	145
1928	248
1929	158
1930	367
1931	381
1932	402
1933	430
1934	968
1935	210
1936	881
1937	301
1938	343
1939	342
1940	607
1941	381
1942	272
1943	234
1944	279
1945	297
1946	432
1947	445
1948	346
1949	593
1950	451
1951	330
1952	426
1953	497
1954	427
1955	401
1956	378
1957	421
1958	376
1959	451
1960	286
1961	362
1962	756
1963	636
1964	460
1965	446
1966	456
1967	273
1968	364
1969	448
1970	387
1971	656
1972	465
1973	690
1974	589
1975	672
1976	502
1977	979
1978	501
1979	847
1980	543
1981	1,008
1982	723
1983	1,110
1984	891
1985	768
1986	1,155
1987	1,248
1988	899
1989	959
1990	984
1991	1,149
1992	799
1993	1,558
1994	1,244
1995	971
1996	1,016
1997	939
1998	1,037
1999	1,172
2000	1,261
2001	1,201
2002	801
2003	1,421
2004	1,693
2005	1,213
2006	1,679
2007	1,103
2008	900
2009	758
2010	1,678
2011	1,026
2012	835
2013	622
2014	919
2015	651
2016	661
2017	865
2018	1,115
2019	1,253
2020	538
2021	768
2022	1,041
2023	775
2024	921
2025	965
2026	1,263

Download the Data

Data for records on 1966-07-25: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	337
20 to 40	25
40 to 60	8
60 to 80	2
80 to 100	0
100 to 120	1
120 to 140	0
140 to 160	1