Weather Records on 30 April 1951

783 weather records were set or tied worldwide on 30 April 1951. Highest significance: Augusta, US.

Key Facts for 30 April 1951

On 30 April 1951, 783 weather records were set or tied at long-record stations worldwide.
233 were record highs and 238 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 61 monthly and 722 daily.
Augusta set a monthly record daily precipitation of 80.0 mm (3.1 in) on 30 April 1951.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 445 records.

Record Map

783 stations

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

Weather records on 30 April 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Augusta	United States	Record daily precipitation	80.0 mm (3.1 in)	64 of 100 (Major)
Claresholm Meadow Creek	Canada	Record daily precipitation	44.2 mm (1.7 in)	62 of 100 (Major)
Gibson Dam	United States	Record daily precipitation	77.2 mm (3.0 in)	62 of 100 (Major)
Valier	United States	Record daily precipitation	57.2 mm (2.3 in)	62 of 100 (Major)
Missoula 6 NW WFO	United States	Record daily snowfall	25.4 cm (10.0 in)	61 of 100 (Major)
Kalispell Glacier AP	United States	Record daily precipitation	40.4 mm (1.6 in)	59 of 100 (Notable)
Missoula 6 NW WFO	United States	Record daily precipitation	48.3 mm (1.9 in)	58 of 100 (Notable)
White Sulphur Springs	United States	Record daily precipitation	46.5 mm (1.8 in)	58 of 100 (Notable)
San Rafael Rch Sp	United States	Record daily snowfall	12.7 cm (5.0 in)	57 of 100 (Notable)
Polson	United States	Record daily precipitation	42.2 mm (1.7 in)	56 of 100 (Notable)
Weeping Water	United States	Record daily precipitation	52.8 mm (2.1 in)	56 of 100 (Notable)
Wetaskiwin	Canada	Record daily precipitation	50.3 mm (2.0 in)	54 of 100 (Notable)
Conrad	United States	Record daily precipitation	33.3 mm (1.3 in)	54 of 100 (Notable)
Outlook	United States	Record daily precipitation	48.3 mm (1.9 in)	53 of 100 (Notable)
Creston	Canada	Record daily precipitation	26.7 mm (1.1 in)	52 of 100 (Notable)
Huntley Exp STN	United States	Record daily precipitation	27.2 mm (1.1 in)	52 of 100 (Notable)
Three Hills	Canada	Record daily precipitation	42.7 mm (1.7 in)	51 of 100 (Notable)
Cascade 5 S	United States	Record daily precipitation	38.9 mm (1.5 in)	50 of 100 (Notable)
Olds	Canada	Record daily precipitation	44.5 mm (1.8 in)	49 of 100 (Notable)
Caldwell	Canada	Record daily precipitation	40.6 mm (1.6 in)	48 of 100 (Notable)
Bozeman Montana State UNIV	United States	Record daily precipitation	38.9 mm (1.5 in)	48 of 100 (Notable)
Philipsburg	United States	Record snow depth	45.7 cm (18.0 in)	48 of 100 (Notable)
Butte Bert Mooney AP	United States	Record daily snowfall	25.1 cm (9.9 in)	46 of 100 (Notable)
Adel	United States	Record daily precipitation	35.3 mm (1.4 in)	45 of 100 (Notable)
Holter Dam	United States	Record daily precipitation	49.5 mm (1.9 in)	45 of 100 (Notable)
Irwin	United States	Record daily precipitation	46.2 mm (1.8 in)	45 of 100 (Notable)
Uttiramerur	India	Record daily precipitation	50.0 mm (2.0 in)	44 of 100 (Notable)
Laketown	United States	Record daily snowfall	11.4 cm (4.5 in)	44 of 100 (Notable)
Red Oak	United States	Record daily precipitation	37.8 mm (1.5 in)	43 of 100 (Notable)
Nordby (Fano)	Denmark	Record daily precipitation	33.5 mm (1.3 in)	42 of 100 (Notable)
Rucker Canyon	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
St Joseph	United States	Record daily precipitation	54.1 mm (2.1 in)	42 of 100 (Notable)
Holter Dam	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Lundbreck	Canada	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Ranebennur	India	Record daily precipitation	68.6 mm (2.7 in)	41 of 100 (Notable)
Lethbridge Cda	Canada	Record daily precipitation	48.3 mm (1.9 in)	37 of 100 (Notable)
Mountain View	Canada	Record daily snowfall	17.8 cm (7.0 in)	37 of 100 (Notable)
Canelo 1 NW	United States	Record daily snowfall	15.2 cm (6.0 in)	37 of 100 (Notable)
Fortine 1 N	United States	Record daily precipitation	25.9 mm (1.0 in)	37 of 100 (Notable)
Vulcan	Canada	Record daily precipitation	40.1 mm (1.6 in)	36 of 100 (Notable)
Parnu	Estonia	Record high minimum temperature	11.8 C (53.2 F)	36 of 100 (Notable)
Clifton	United States	Record low maximum temperature	9.4 C (48.9 F)	36 of 100 (Notable)
Cedaredge	United States	Record daily snowfall	10.2 cm (4.0 in)	36 of 100 (Notable)
Bisbee	United States	Record daily snowfall	6.4 cm (2.5 in)	35 of 100 (Notable)
American Falls 6 NE	United States	Record daily snowfall	6.4 cm (2.5 in)	35 of 100 (Notable)
Greensboro Lock 7	United States	Record daily precipitation	47.8 mm (1.9 in)	35 of 100 (Notable)
Risnes I Fjotland	Norway	Record snow depth	80.0 cm (31.5 in)	34 of 100 (Routine)
Onawa 3NW	United States	Record daily precipitation	39.6 mm (1.6 in)	34 of 100 (Routine)
New Castle 1 N	United States	Record daily precipitation	36.6 mm (1.4 in)	34 of 100 (Routine)
Shoshone	United States	Record daily snowfall	7.6 cm (3.0 in)	33 of 100 (Routine)
Flora 5 NW	United States	Record high minimum temperature	23.3 C (73.9 F)	33 of 100 (Routine)
Babb 6 NE	United States	Record daily precipitation	44.2 mm (1.7 in)	33 of 100 (Routine)
Gleichen	Canada	Record daily precipitation	54.4 mm (2.1 in)	32 of 100 (Routine)
Lyndon	Canada	Record daily precipitation	30.2 mm (1.2 in)	32 of 100 (Routine)
Philipsburg	United States	Record daily snowfall	61.0 cm (24.0 in)	32 of 100 (Routine)
Nebraska City 1 NW	United States	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Halaula 1110	United States	Record daily precipitation	49.8 mm (2.0 in)	32 of 100 (Routine)
Guthrie Ctr	United States	Record daily precipitation	25.4 mm (1.0 in)	31 of 100 (Routine)
Sheldon	United States	Record daily precipitation	32.5 mm (1.3 in)	31 of 100 (Routine)
Red Lodge	United States	Record daily precipitation	27.9 mm (1.1 in)	31 of 100 (Routine)

Counts by Type and Timescale

783 records

Records set or tied on 30 April 1951 by type: Highest daily maximum 33, Lowest daily maximum 163, Highest daily minimum 200, Lowest daily minimum 75, Heaviest daily rainfall 250, Heaviest daily snowfall 45, Deepest snow cover 17.

Records on 30 April 1951 by type
Record type	Records
Highest daily maximum	33
Lowest daily maximum	163
Highest daily minimum	200
Lowest daily minimum	75
Heaviest daily rainfall	250
Heaviest daily snowfall	45
Deepest snow cover	17

Records on 30 April 1951 by timescale: all-time 0, monthly 61, daily 722.

How Much Records Were Beaten By

648 broken records

Margins by which the 648 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 540.0. Ties are not counted.

Top 20 by Significance

30 April 1951

Top 20 records on 30 April 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 1951	Augusta, US	monthly rain	80.0 mm (3.1 in)	54.6 mm (2.1 in)	31 years	64 of 100 (Major)
30 April 1951	Claresholm Meadow Creek, CA	monthly rain	44.2 mm (1.7 in)	21.1 mm (0.8 in)	28 years	62 of 100 (Major)
30 April 1951	Gibson Dam, US	monthly rain	77.2 mm (3.0 in)	51.3 mm (2.0 in)	28 years	62 of 100 (Major)
30 April 1951	Valier, US	monthly rain	57.2 mm (2.3 in)	28.5 mm (1.1 in)	29 years	62 of 100 (Major)
30 April 1951	Missoula 6 NW WFO, US	monthly snowfall	25.4 cm (10.0 in)	15.2 cm (6.0 in)	23 years	61 of 100 (Major)
30 April 1951	Kalispell Glacier AP, US	monthly rain	40.4 mm (1.6 in)	21.3 mm (0.8 in)	15 years	59 of 100 (Notable)
30 April 1951	Missoula 6 NW WFO, US	monthly rain	48.3 mm (1.9 in)	13.0 mm (0.5 in)	39 years	58 of 100 (Notable)
30 April 1951	White Sulphur Springs, US	monthly rain	46.5 mm (1.8 in)	12.2 mm (0.5 in)	57 years	58 of 100 (Notable)
30 April 1951	San Rafael Rch Sp, US	monthly snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	54 years	57 of 100 (Notable)
30 April 1951	Polson, US	monthly rain	42.2 mm (1.7 in)	18.6 mm (0.7 in)	9 years	56 of 100 (Notable)
30 April 1951	Weeping Water, US	daily rain	52.8 mm (2.1 in)	35.5 mm (1.4 in)	40 years	56 of 100 (Notable)
30 April 1951	Wetaskiwin, CA	monthly rain	50.3 mm (2.0 in)	18.5 mm (0.7 in)	26 years	54 of 100 (Notable)
30 April 1951	Conrad, US	daily rain	33.3 mm (1.3 in)	25.2 mm (1.0 in)	36 years	54 of 100 (Notable)
30 April 1951	Outlook, US	monthly rain	48.3 mm (1.9 in)	24.9 mm (1.0 in)	3 years	53 of 100 (Notable)
30 April 1951	Creston, CA	monthly rain	26.7 mm (1.1 in)	9.4 mm (0.37 in)	19 years	52 of 100 (Notable)
30 April 1951	Huntley Exp STN, US	daily rain	27.2 mm (1.1 in)	18.3 mm (0.7 in)	28 years	52 of 100 (Notable)
30 April 1951	Three Hills, CA	daily rain	42.7 mm (1.7 in)	36.6 mm (1.4 in)	28 years	51 of 100 (Notable)
30 April 1951	Cascade 5 S, US	daily rain	38.9 mm (1.5 in)	23.2 mm (0.9 in)	17 years	50 of 100 (Notable)
30 April 1951	Olds, CA	monthly rain	44.5 mm (1.8 in)	16.3 mm (0.6 in)	11 years	49 of 100 (Notable)
30 April 1951	Caldwell, CA	daily rain	40.6 mm (1.6 in)	30.4 mm (1.2 in)	30 years	48 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 1951

Records set or tied on this calendar date in each year from 1795 to 1951. 1951 had 783 records.

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

Records on 04-30 in each year
Year	Records
1795	1
1804	1
1809	1
1812	1
1814	2
1833	1
1840	1
1848	1
1850	1
1853	1
1854	1
1856	1
1859	1
1862	1
1864	1
1865	1
1866	3
1872	1
1873	1
1874	2
1876	1
1878	4
1879	2
1880	1
1881	1
1882	1
1884	1
1885	1
1886	5
1888	1
1889	1
1891	5
1892	7
1894	1
1895	5
1896	3
1897	2
1898	6
1899	11
1900	4
1901	8
1902	13
1903	21
1904	11
1905	9
1906	16
1907	35
1908	28
1909	74
1910	17
1911	19
1912	18
1913	62
1914	8
1915	20
1916	21
1917	25
1918	28
1919	130
1920	70
1921	54
1922	138
1923	42
1924	96
1925	210
1926	331
1927	127
1928	130
1929	119
1930	232
1931	548
1932	145
1933	422
1934	443
1935	327
1936	373
1937	228
1938	282
1939	268
1940	526
1941	484
1942	1,163
1943	470
1944	286
1945	314
1946	301
1947	330
1948	912
1949	447
1950	671
1951	783
1952	435
1953	635
1954	1,224
1955	1,252
1956	908
1957	401
1958	482
1959	575
1960	507
1961	381
1962	617
1963	730
1964	339
1965	488
1966	740
1967	914
1968	928
1969	587
1970	1,189
1971	365
1972	497
1973	398
1974	822
1975	468
1976	783
1977	525
1978	631
1979	675
1980	545
1981	1,342
1982	504
1983	1,154
1984	1,519
1985	650
1986	660
1987	1,437
1988	808
1989	674
1990	977
1991	828
1992	1,808
1993	765
1994	1,499
1995	1,007
1996	1,637
1997	764
1998	857
1999	1,012
2000	1,046
2001	900
2002	1,171
2003	927
2004	703
2005	1,113
2006	778
2007	996
2008	1,260
2009	660
2010	921
2011	636
2012	819
2013	732
2014	946
2015	380
2016	969
2017	1,450
2018	708
2019	700
2020	1,476
2021	1,167
2022	499
2023	782
2024	705
2025	489
2026	365

Download the Data

Data for records on 1951-04-30: 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 100	632
100 to 200	10
200 to 300	2
300 to 400	2
400 to 500	1
500 to 600	1