Weather Records on 18 April 1951

658 weather records were set or tied worldwide on 18 April 1951. Highest significance: Golden A, CA.

Key Facts for 18 April 1951

On 18 April 1951, 658 weather records were set or tied at long-record stations worldwide.
42 were record highs and 234 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 14 monthly and 644 daily.
Golden A set a monthly record daily precipitation of 54.4 mm (2.1 in) on 18 April 1951.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 466 records.

Record Map

658 stations

658 station records on 18 April 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Golden A	Canada	Record daily precipitation	54.4 mm (2.1 in)	61 of 100 (Major)
Royal Observatory	South Africa	Record daily precipitation	71.1 mm (2.8 in)	58 of 100 (Notable)
White Cliffs (Tongo)	Australia	Record daily precipitation	33.0 mm (1.3 in)	52 of 100 (Notable)
Albert (the Meadows)	Australia	Record daily precipitation	38.9 mm (1.5 in)	51 of 100 (Notable)
Haliburton A	Canada	Record daily snowfall	9.9 cm (3.9 in)	47 of 100 (Notable)
Table.Mtn Woodhead Tunnel	South Africa	Record daily precipitation	85.1 mm (3.4 in)	45 of 100 (Notable)
Medicine Hat A	Canada	Record daily snowfall	14.7 cm (5.8 in)	43 of 100 (Notable)
Mykland	Norway	Record snow depth	150.0 cm (59.1 in)	42 of 100 (Notable)
Seven Persons	Canada	Record daily snowfall	15.2 cm (6.0 in)	41 of 100 (Notable)
Caldwell	Canada	Record daily snowfall	25.4 cm (10.0 in)	40 of 100 (Notable)
Maple Creek	Canada	Record daily snowfall	17.8 cm (7.0 in)	40 of 100 (Notable)
Amguri	India	Record daily precipitation	75.2 mm (3.0 in)	40 of 100 (Notable)
Barrage Temiscamingue	Canada	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Esplanada	Brazil	Record daily precipitation	41.2 mm (1.6 in)	37 of 100 (Notable)
Willow Creek	Canada	Record low maximum temperature	-8.9 C (16.0 F)	37 of 100 (Notable)
Paratinga	Brazil	Record daily precipitation	45.4 mm (1.8 in)	36 of 100 (Notable)
Sasvad	India	Record daily precipitation	41.7 mm (1.6 in)	36 of 100 (Notable)
Sion	Canada	Record daily snowfall	11.9 cm (4.7 in)	35 of 100 (Notable)
North Bay	Canada	Record daily snowfall	7.1 cm (2.8 in)	35 of 100 (Notable)
Dhing	India	Record daily precipitation	55.9 mm (2.2 in)	35 of 100 (Notable)
Cape Town Maitland (Cem)	South Africa	Record daily precipitation	48.3 mm (1.9 in)	35 of 100 (Notable)
Hedal I Valdres	Norway	Record snow depth	132.0 cm (52.0 in)	34 of 100 (Routine)
Kalispell Glacier AP	United States	Record low minimum temperature	-11.7 C (10.9 F)	34 of 100 (Routine)
Claresholm Meadow Creek	Canada	Record daily snowfall	10.2 cm (4.0 in)	33 of 100 (Routine)
Medicine Hat A	Canada	Record low maximum temperature	-9.4 C (15.1 F)	33 of 100 (Routine)
Beaver Mines	Canada	Record daily snowfall	12.7 cm (5.0 in)	33 of 100 (Routine)
Risnes I Fjotland	Norway	Record snow depth	106.0 cm (41.7 in)	33 of 100 (Routine)
Cape Town Fire Station	South Africa	Record daily precipitation	43.2 mm (1.7 in)	33 of 100 (Routine)
Dunkirk 19NNE	United States	Record daily snowfall	7.6 cm (3.0 in)	33 of 100 (Routine)
Queimadas	Brazil	Record daily precipitation	47.1 mm (1.9 in)	32 of 100 (Routine)
Caldwell	Canada	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Calgary Int'l A	Canada	Record low minimum temperature	-17.8 C (0.0 F)	32 of 100 (Routine)
Prentice #2	United States	Record daily snowfall	12.7 cm (5.0 in)	31 of 100 (Routine)
Geurie Post Office	Australia	Record daily precipitation	30.0 mm (1.2 in)	30 of 100 (Routine)
Banff	Canada	Record low maximum temperature	-12.2 C (10.0 F)	30 of 100 (Routine)
Tobermory	Canada	Record daily snowfall	5.1 cm (2.0 in)	30 of 100 (Routine)
Caledon (Pol)	South Africa	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Piranhas (Marechal Floriano)	Brazil	Record daily precipitation	52.0 mm (2.0 in)	29 of 100 (Routine)
Banff	Canada	Record low minimum temperature	-17.2 C (1.0 F)	29 of 100 (Routine)
Seleng	India	Record daily precipitation	78.0 mm (3.1 in)	29 of 100 (Routine)
Vanur	India	Record daily precipitation	44.7 mm (1.8 in)	29 of 100 (Routine)
Wytheville	United States	Record low minimum temperature	-5.6 C (21.9 F)	29 of 100 (Routine)
Postmyr I Drangedal	Norway	Record snow depth	169.0 cm (66.5 in)	28 of 100 (Routine)
Medicine Hat A	Canada	Record low minimum temperature	-12.2 C (10.0 F)	27 of 100 (Routine)
Denton	United States	Record daily snowfall	5.1 cm (2.0 in)	27 of 100 (Routine)
Charleville Post Office	Australia	Record high minimum temperature	20.0 C (68.0 F)	26 of 100 (Routine)
Three Hills	Canada	Record daily snowfall	5.1 cm (2.0 in)	26 of 100 (Routine)
Huntsville	Canada	Record daily snowfall	7.6 cm (3.0 in)	26 of 100 (Routine)
Tuddal	Norway	Record snow depth	130.0 cm (51.2 in)	26 of 100 (Routine)
Gatesville	United States	Record high maximum temperature	34.4 C (93.9 F)	26 of 100 (Routine)
Orlando Executive AP	United States	Record daily precipitation	46.0 mm (1.8 in)	26 of 100 (Routine)
Narromine (Alagala Old)	Australia	Record daily precipitation	26.7 mm (1.1 in)	25 of 100 (Routine)
Santana Do Ipanema	Brazil	Record daily precipitation	47.2 mm (1.9 in)	25 of 100 (Routine)
Strathmore	Canada	Record low minimum temperature	-18.9 C (-2.0 F)	25 of 100 (Routine)
Hiasen I Sigdal	Norway	Record snow depth	133.0 cm (52.4 in)	25 of 100 (Routine)
Grayling	United States	Record daily snowfall	10.2 cm (4.0 in)	25 of 100 (Routine)
Malta	United States	Record daily snowfall	5.1 cm (2.0 in)	25 of 100 (Routine)
Buckhannon	United States	Record low minimum temperature	-6.1 C (21.0 F)	25 of 100 (Routine)
Palmeiro Dos Indios	Brazil	Record daily precipitation	35.3 mm (1.4 in)	24 of 100 (Routine)
Campo Largo	Brazil	Record daily precipitation	36.7 mm (1.4 in)	24 of 100 (Routine)

Counts by Type and Timescale

658 records

Records set or tied on 18 April 1951 by type: Highest daily maximum 14, Lowest daily maximum 80, Highest daily minimum 28, Lowest daily minimum 154, Heaviest daily rainfall 299, Heaviest daily snowfall 69, Deepest snow cover 14.

Records on 18 April 1951 by type
Record type	Records
Highest daily maximum	14
Lowest daily maximum	80
Highest daily minimum	28
Lowest daily minimum	154
Heaviest daily rainfall	299
Heaviest daily snowfall	69
Deepest snow cover	14

Records on 18 April 1951 by timescale: all-time 0, monthly 14, daily 644.

How Much Records Were Beaten By

553 broken records

Margins by which the 553 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 720.0. Ties are not counted.

Top 20 by Significance

18 April 1951

Top 20 records on 18 April 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1951	Golden A, CA	monthly rain	54.4 mm (2.1 in)	32.8 mm (1.3 in)	20 years	61 of 100 (Major)
18 April 1951	Royal Observatory, ZA	monthly rain	71.1 mm (2.8 in)	13.7 mm (0.5 in)	69 years	58 of 100 (Notable)
18 April 1951	White Cliffs (Tongo), AU	daily rain	33.0 mm (1.3 in)	25.4 mm (1.0 in)	56 years	52 of 100 (Notable)
18 April 1951	Albert (the Meadows), AU	daily rain	38.9 mm (1.5 in)	33.3 mm (1.3 in)	41 years	51 of 100 (Notable)
18 April 1951	Haliburton A, CA	daily snowfall	9.9 cm (3.9 in)	9.9 cm (3.9 in)	67 years	47 of 100 (Notable)
18 April 1951	Table.Mtn Woodhead Tunnel, ZA	monthly rain	85.1 mm (3.4 in)	24.1 mm (0.9 in)	39 years	45 of 100 (Notable)
18 April 1951	Medicine Hat A, CA	daily snowfall	14.7 cm (5.8 in)	8.3 cm (3.3 in)	58 years	43 of 100 (Notable)
18 April 1951	Mykland, NO	daily snow depth	150.0 cm (59.1 in)	72.0 cm (28.3 in)	50 years	42 of 100 (Notable)
18 April 1951	Seven Persons, CA	daily snowfall	15.2 cm (6.0 in)	13.9 cm (5.5 in)	33 years	41 of 100 (Notable)
18 April 1951	Caldwell, CA	daily snowfall	25.4 cm (10.0 in)	20.3 cm (8.0 in)	17 years	40 of 100 (Notable)
18 April 1951	Maple Creek, CA	daily snowfall	17.8 cm (7.0 in)	10.2 cm (4.0 in)	65 years	40 of 100 (Notable)
18 April 1951	Amguri, IN	daily rain	75.2 mm (3.0 in)	34.8 mm (1.4 in)	44 years	40 of 100 (Notable)
18 April 1951	Barrage Temiscamingue, CA	daily snowfall	12.7 cm (5.0 in)	8.1 cm (3.2 in)	38 years	38 of 100 (Notable)
18 April 1951	Esplanada, BR	daily rain	41.2 mm (1.6 in)	32.9 mm (1.3 in)	1 year	37 of 100 (Notable)
18 April 1951	Willow Creek, CA	daily low max	-8.9 C (16.0 F)	18.9 C (34.0 F)	24 years	37 of 100 (Notable)
18 April 1951	Paratinga, BR	daily rain	45.4 mm (1.8 in)	32.3 mm (1.3 in)	16 years	36 of 100 (Notable)
18 April 1951	Sasvad, IN	daily rain	41.7 mm (1.6 in)	30.8 mm (1.2 in)	30 years	36 of 100 (Notable)
18 April 1951	Sion, CA	daily snowfall	11.9 cm (4.7 in)	9.9 cm (3.9 in)	44 years	35 of 100 (Notable)
18 April 1951	North Bay, CA	daily snowfall	7.1 cm (2.8 in)	6.1 cm (2.4 in)	32 years	35 of 100 (Notable)
18 April 1951	Dhing, IN	daily rain	55.9 mm (2.2 in)	24.1 mm (0.9 in)	36 years	35 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

1793 to 1951

Records set or tied on this calendar date in each year from 1793 to 1951. 1951 had 658 records.

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

Records on 04-18 in each year
Year	Records
1793	1
1807	2
1815	1
1838	1
1847	1
1849	1
1851	1
1852	3
1854	3
1855	1
1865	4
1867	1
1870	1
1871	1
1875	4
1877	2
1878	1
1879	3
1880	2
1884	2
1886	2
1887	3
1888	1
1889	1
1890	2
1891	1
1892	3
1893	5
1894	7
1895	2
1896	3
1897	5
1898	8
1899	2
1900	2
1901	6
1902	5
1903	11
1904	9
1905	12
1906	18
1907	17
1908	37
1909	19
1910	19
1911	25
1912	21
1913	26
1914	38
1915	31
1916	22
1917	40
1918	76
1919	16
1920	64
1921	58
1922	85
1923	107
1924	101
1925	154
1926	322
1927	391
1928	323
1929	126
1930	113
1931	173
1932	326
1933	211
1934	391
1935	264
1936	483
1937	477
1938	711
1939	525
1940	322
1941	496
1942	287
1943	298
1944	259
1945	371
1946	357
1947	444
1948	932
1949	345
1950	244
1951	658
1952	536
1953	1,322
1954	442
1955	817
1956	467
1957	629
1958	370
1959	468
1960	320
1961	520
1962	484
1963	662
1964	449
1965	363
1966	776
1967	882
1968	867
1969	795
1970	771
1971	1,106
1972	470
1973	953
1974	326
1975	751
1976	1,309
1977	717
1978	803
1979	841
1980	842
1981	708
1982	616
1983	2,082
1984	625
1985	1,119
1986	622
1987	1,068
1988	936
1989	625
1990	1,368
1991	780
1992	702
1993	730
1994	1,218
1995	1,601
1996	826
1997	1,256
1998	1,011
1999	1,428
2000	912
2001	1,487
2002	2,084
2003	969
2004	846
2005	622
2006	1,262
2007	675
2008	913
2009	624
2010	478
2011	1,122
2012	744
2013	2,509
2014	534
2015	519
2016	973
2017	588
2018	1,202
2019	601
2020	770
2021	592
2022	1,013
2023	739
2024	641
2025	997
2026	498

Download the Data

Data for records on 1951-04-18: 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	534
100 to 200	9
200 to 300	4
300 to 400	4
400 to 500	1
500 to 600	0
600 to 700	0
700 to 800	1