Weather Records on 30 June 1951

517 weather records were set or tied worldwide on 30 June 1951. Highest significance: Mariahu, IN.

Key Facts for 30 June 1951

On 30 June 1951, 517 weather records were set or tied at long-record stations worldwide.
72 were record highs and 231 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 19 monthly and 495 daily.
Mariahu set a monthly record daily precipitation of 148.8 mm (5.9 in) on 30 June 1951.
Across 160 earlier years (1826 to 2026) the same calendar date averaged 449 records.

Record Map

517 stations

517 station records on 30 June 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 June 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mariahu	India	Record daily precipitation	148.8 mm (5.9 in)	64 of 100 (Major)
Ghosi	India	Record daily precipitation	144.0 mm (5.7 in)	56 of 100 (Notable)
Sitamarhi Sr	India	Record daily precipitation	178.6 mm (7.0 in)	54 of 100 (Notable)
Chakaibanda	India	Record daily precipitation	174.8 mm (6.9 in)	51 of 100 (Notable)
Ashland	United States	Record daily precipitation	65.0 mm (2.6 in)	51 of 100 (Notable)
Topchanchi	India	Record daily precipitation	120.7 mm (4.8 in)	50 of 100 (Notable)
Bairgania	India	Record daily precipitation	171.5 mm (6.8 in)	49 of 100 (Notable)
Mirzapur	India	Record daily precipitation	95.0 mm (3.7 in)	49 of 100 (Notable)
Enid	United States	Record daily precipitation	77.7 mm (3.1 in)	49 of 100 (Notable)
Mahul Pnulpur	India	Record daily precipitation	125.5 mm (4.9 in)	47 of 100 (Notable)
Akbarpur	India	Record daily precipitation	113.0 mm (4.4 in)	46 of 100 (Notable)
Vinita 2 N	United States	Record daily precipitation	137.7 mm (5.4 in)	46 of 100 (Notable)
Allahabad Chailk	India	Record daily precipitation	114.3 mm (4.5 in)	45 of 100 (Notable)
Calera	United States	Record daily precipitation	69.9 mm (2.8 in)	45 of 100 (Notable)
Howard 2SE	United States	Record daily precipitation	108.7 mm (4.3 in)	43 of 100 (Notable)
Independence	United States	Record daily precipitation	89.9 mm (3.5 in)	42 of 100 (Notable)
Perryville	United States	Record daily precipitation	60.5 mm (2.4 in)	42 of 100 (Notable)
Karchana	India	Record daily precipitation	81.3 mm (3.2 in)	41 of 100 (Notable)
Kadipur	India	Record daily precipitation	108.0 mm (4.3 in)	41 of 100 (Notable)
Varanasi	India	Record daily precipitation	104.4 mm (4.1 in)	41 of 100 (Notable)
Valley Head	United States	Record daily precipitation	64.5 mm (2.5 in)	40 of 100 (Notable)
Patan	India	Record daily precipitation	95.3 mm (3.8 in)	39 of 100 (Notable)
Itatira	Brazil	Record daily precipitation	63.2 mm (2.5 in)	38 of 100 (Notable)
Rowlesburg 1	United States	Record daily precipitation	39.1 mm (1.5 in)	38 of 100 (Notable)
Augusta	United States	Record daily precipitation	63.2 mm (2.5 in)	37 of 100 (Notable)
Lynnville 4 SSW	United States	Record daily precipitation	68.1 mm (2.7 in)	37 of 100 (Notable)
Mantova	Italy	Record daily precipitation	53.6 mm (2.1 in)	36 of 100 (Notable)
Hopkinsville	United States	Record daily precipitation	54.6 mm (2.1 in)	36 of 100 (Notable)
Mayfield 2 S	United States	Record daily precipitation	72.1 mm (2.8 in)	36 of 100 (Notable)
Gorakhpur	India	Record daily precipitation	151.4 mm (6.0 in)	35 of 100 (Notable)
Mt Hope	United States	Record daily precipitation	76.2 mm (3.0 in)	35 of 100 (Notable)
Aberdeen	United States	Record high maximum temperature	35.6 C (96.1 F)	35 of 100 (Notable)
Teonthar	India	Record daily precipitation	236.7 mm (9.3 in)	34 of 100 (Routine)
Pratapgarh	India	Record daily precipitation	78.0 mm (3.1 in)	34 of 100 (Routine)
Corinth 5 WSW	United States	Record daily precipitation	88.4 mm (3.5 in)	34 of 100 (Routine)
Bolivar 1 NE	United States	Record daily precipitation	71.4 mm (2.8 in)	34 of 100 (Routine)
Muskogee	United States	Record daily precipitation	54.6 mm (2.1 in)	34 of 100 (Routine)
Quesnel	Canada	Record high minimum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Winfield 3NE	United States	Record daily precipitation	95.3 mm (3.8 in)	33 of 100 (Routine)
Cleveland 1	United States	Record daily precipitation	72.4 mm (2.9 in)	33 of 100 (Routine)
Perry	United States	Record daily precipitation	64.5 mm (2.5 in)	33 of 100 (Routine)
Anthony	United States	Record daily precipitation	64.3 mm (2.5 in)	33 of 100 (Routine)
Atraula	India	Record daily precipitation	102.9 mm (4.1 in)	32 of 100 (Routine)
Mahuadaur	India	Record daily precipitation	120.7 mm (4.8 in)	31 of 100 (Routine)
Handia	India	Record daily precipitation	109.5 mm (4.3 in)	31 of 100 (Routine)
Jaunpur	India	Record daily precipitation	77.5 mm (3.1 in)	31 of 100 (Routine)
Titusville	United States	Record low minimum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Pleasanton	United States	Record daily precipitation	69.9 mm (2.8 in)	31 of 100 (Routine)
Neosho	United States	Record daily precipitation	75.2 mm (3.0 in)	31 of 100 (Routine)
Faizabad	India	Record daily precipitation	141.0 mm (5.6 in)	30 of 100 (Routine)
Tanda	India	Record daily precipitation	127.0 mm (5.0 in)	29 of 100 (Routine)
Helena 1 S	United States	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Gravette	United States	Record daily precipitation	69.9 mm (2.8 in)	29 of 100 (Routine)
Lamar	United States	Record low maximum temperature	22.2 C (72.0 F)	29 of 100 (Routine)
Longmont 2 ESE	United States	Record low maximum temperature	13.9 C (57.0 F)	29 of 100 (Routine)
Sedgwick	United States	Record daily precipitation	56.6 mm (2.2 in)	29 of 100 (Routine)
Mt Vernon 3 SW	United States	Record daily precipitation	40.6 mm (1.6 in)	29 of 100 (Routine)
Claremore 2 ENE	United States	Record daily precipitation	61.0 mm (2.4 in)	29 of 100 (Routine)
Riverton	United States	Record daily precipitation	43.2 mm (1.7 in)	29 of 100 (Routine)
Basti	India	Record daily precipitation	121.4 mm (4.8 in)	28 of 100 (Routine)

Counts by Type and Timescale

517 records

Records set or tied on 30 June 1951 by type: Highest daily maximum 38, Lowest daily maximum 145, Highest daily minimum 34, Lowest daily minimum 86, Heaviest daily rainfall 214.

Records on 30 June 1951 by type
Record type	Records
Highest daily maximum	38
Lowest daily maximum	145
Highest daily minimum	34
Lowest daily minimum	86
Heaviest daily rainfall	214
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 June 1951 by timescale: all-time 3, monthly 19, daily 495.

How Much Records Were Beaten By

408 broken records

Margins by which the 408 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.6. Ties are not counted.

Top 20 by Significance

30 June 1951

Top 20 records on 30 June 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 June 1951	Mariahu, IN	monthly rain	148.8 mm (5.9 in)	61.4 mm (2.4 in)	36 years	64 of 100 (Major)
30 June 1951	Ghosi, IN	daily rain	144.0 mm (5.7 in)	85.3 mm (3.4 in)	42 years	56 of 100 (Notable)
30 June 1951	Sitamarhi Sr, IN	daily rain	178.6 mm (7.0 in)	98.1 mm (3.9 in)	30 years	54 of 100 (Notable)
30 June 1951	Chakaibanda, IN	daily rain	174.8 mm (6.9 in)	127.6 mm (5.0 in)	22 years	51 of 100 (Notable)
30 June 1951	Ashland, US	daily rain	65.0 mm (2.6 in)	48.7 mm (1.9 in)	41 years	51 of 100 (Notable)
30 June 1951	Topchanchi, IN	daily rain	120.7 mm (4.8 in)	78.8 mm (3.1 in)	25 years	50 of 100 (Notable)
30 June 1951	Bairgania, IN	daily rain	171.5 mm (6.8 in)	108.0 mm (4.3 in)	37 years	49 of 100 (Notable)
30 June 1951	Mirzapur, IN	daily rain	95.0 mm (3.7 in)	56.1 mm (2.2 in)	44 years	49 of 100 (Notable)
30 June 1951	Enid, US	daily rain	77.7 mm (3.1 in)	53.3 mm (2.1 in)	42 years	49 of 100 (Notable)
30 June 1951	Mahul Pnulpur, IN	daily rain	125.5 mm (4.9 in)	77.2 mm (3.0 in)	16 years	47 of 100 (Notable)
30 June 1951	Akbarpur, IN	monthly rain	113.0 mm (4.4 in)	33.0 mm (1.3 in)	35 years	46 of 100 (Notable)
30 June 1951	Vinita 2 N, US	daily rain	137.7 mm (5.4 in)	95.0 mm (3.7 in)	5 years	46 of 100 (Notable)
30 June 1951	Allahabad Chailk, IN	daily rain	114.3 mm (4.5 in)	74.2 mm (2.9 in)	2 years	45 of 100 (Notable)
30 June 1951	Calera, US	daily rain	69.9 mm (2.8 in)	39.4 mm (1.6 in)	49 years	45 of 100 (Notable)
30 June 1951	Howard 2SE, US	daily rain	108.7 mm (4.3 in)	50.3 mm (2.0 in)	41 years	43 of 100 (Notable)
30 June 1951	Independence, US	daily rain	89.9 mm (3.5 in)	38.1 mm (1.5 in)	50 years	42 of 100 (Notable)
30 June 1951	Perryville, US	daily rain	60.5 mm (2.4 in)	39.4 mm (1.6 in)	30 years	42 of 100 (Notable)
30 June 1951	Karchana, IN	daily rain	81.3 mm (3.2 in)	54.4 mm (2.1 in)	42 years	41 of 100 (Notable)
30 June 1951	Kadipur, IN	monthly rain	108.0 mm (4.3 in)	22.9 mm (0.9 in)	39 years	41 of 100 (Notable)
30 June 1951	Varanasi, IN	monthly rain	104.4 mm (4.1 in)	31.5 mm (1.2 in)	16 years	41 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

1826 to 1951

Records set or tied on this calendar date in each year from 1826 to 1951. 1951 had 517 records.

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

Records on 06-30 in each year
Year	Records
1826	1
1832	1
1835	2
1843	2
1846	1
1848	2
1849	1
1853	1
1855	1
1857	1
1860	1
1863	1
1865	1
1869	1
1871	1
1873	1
1876	1
1879	2
1882	2
1883	3
1885	4
1886	1
1887	2
1888	2
1889	1
1890	3
1891	2
1892	1
1894	1
1895	1
1896	2
1897	6
1898	3
1899	4
1900	5
1901	9
1902	10
1903	8
1904	20
1905	23
1906	20
1907	12
1908	17
1909	39
1910	57
1911	12
1912	32
1913	99
1914	97
1915	40
1916	66
1917	39
1918	54
1919	72
1920	319
1921	121
1922	133
1923	309
1924	194
1925	113
1926	65
1927	240
1928	137
1929	213
1930	168
1931	774
1932	154
1933	571
1934	331
1935	347
1936	620
1937	458
1938	330
1939	438
1940	346
1941	341
1942	408
1943	790
1944	272
1945	671
1946	631
1947	487
1948	340
1949	403
1950	494
1951	517
1952	533
1953	404
1954	426
1955	432
1956	409
1957	592
1958	423
1959	948
1960	270
1961	351
1962	375
1963	560
1964	434
1965	240
1966	379
1967	414
1968	752
1969	459
1970	730
1971	459
1972	558
1973	623
1974	643
1975	414
1976	607
1977	662
1978	721
1979	601
1980	935
1981	838
1982	1,230
1983	752
1984	722
1985	829
1986	745
1987	1,044
1988	1,216
1989	953
1990	1,191
1991	1,129
1992	1,670
1993	711
1994	951
1995	1,354
1996	889
1997	938
1998	1,714
1999	910
2000	861
2001	778
2002	904
2003	896
2004	998
2005	1,526
2006	723
2007	736
2008	852
2009	1,052
2010	1,069
2011	1,057
2012	1,416
2013	963
2014	496
2015	1,018
2016	371
2017	642
2018	625
2019	1,042
2020	1,151
2021	1,442
2022	709
2023	531
2024	1,004
2025	858
2026	999

Download the Data

Data for records on 1951-06-30: 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 20	338
20 to 40	45
40 to 60	15
60 to 80	5
80 to 100	3
100 to 120	1
120 to 140	1