Weather Records on 18 April 1955

817 weather records were set or tied worldwide on 18 April 1955. Highest significance: Calgary Int'l A, CA.

Key Facts for 18 April 1955

On 18 April 1955, 817 weather records were set or tied at long-record stations worldwide.
328 were record highs and 180 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 17 monthly and 798 daily.
Calgary Int'l A set a daily record snowfall of 30.5 cm (12.0 in) on 18 April 1955.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 465 records.

Record Map

817 stations

817 station records on 18 April 1955 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1955: highest significance records shown on the map
Station	Country	Type	Value	Significance
Calgary Int'l A	Canada	Record daily snowfall	30.5 cm (12.0 in)	66 of 100 (Major)
Calgary Int'l A	Canada	Record daily precipitation	30.5 mm (1.2 in)	65 of 100 (Major)
Gleichen	Canada	Record daily snowfall	38.1 cm (15.0 in)	61 of 100 (Major)
Alexandria	United States	Record daily precipitation	65.5 mm (2.6 in)	56 of 100 (Notable)
Pleystowe Sugar Mill	Australia	Record daily precipitation	111.8 mm (4.4 in)	55 of 100 (Notable)
Mitchell 2 N	United States	Record daily precipitation	83.6 mm (3.3 in)	55 of 100 (Notable)
Tuscarora Andrae Rch	United States	Record daily snowfall	30.5 cm (12.0 in)	54 of 100 (Notable)
Plane Creek Sugar Mill	Australia	Record daily precipitation	157.5 mm (6.2 in)	53 of 100 (Notable)
Walkerston	Australia	Record daily precipitation	132.1 mm (5.2 in)	53 of 100 (Notable)
Varzea Alegre	Brazil	Record daily precipitation	102.0 mm (4.0 in)	53 of 100 (Notable)
Gleichen	Canada	Record daily precipitation	38.1 mm (1.5 in)	53 of 100 (Notable)
Sarina Post Office	Australia	Record daily precipitation	131.8 mm (5.2 in)	52 of 100 (Notable)
Placerville	United States	Record daily precipitation	67.1 mm (2.6 in)	51 of 100 (Notable)
Krakmo	Norway	Record daily precipitation	40.2 mm (1.6 in)	47 of 100 (Notable)
Quincy	United States	Record daily precipitation	37.3 mm (1.5 in)	47 of 100 (Notable)
Haliburton A	Canada	Record daily precipitation	32.0 mm (1.3 in)	46 of 100 (Notable)
Lambton	Canada	Record daily precipitation	35.6 mm (1.4 in)	46 of 100 (Notable)
Claresholm Meadow Creek	Canada	Record daily precipitation	34.3 mm (1.4 in)	44 of 100 (Notable)
Vulcan	Canada	Record daily precipitation	33.8 mm (1.3 in)	44 of 100 (Notable)
Atlanta 1 E	United States	Record daily snowfall	31.2 cm (12.3 in)	44 of 100 (Notable)
Georgetown Post Office	Australia	Record daily precipitation	43.7 mm (1.7 in)	43 of 100 (Notable)
Mount Surprise Township	Australia	Record daily precipitation	59.7 mm (2.4 in)	43 of 100 (Notable)
Lake Spaulding	United States	Record daily snowfall	33.0 cm (13.0 in)	42 of 100 (Notable)
Huntsville	Canada	Record daily precipitation	30.2 mm (1.2 in)	41 of 100 (Notable)
Huntington Lake	United States	Record daily snowfall	35.6 cm (14.0 in)	41 of 100 (Notable)
Babb 6 NE	United States	Record daily precipitation	26.9 mm (1.1 in)	41 of 100 (Notable)
Millers Creek	Australia	Record daily precipitation	34.3 mm (1.4 in)	40 of 100 (Notable)
Olds	Canada	Record daily precipitation	27.4 mm (1.1 in)	39 of 100 (Notable)
Vulcan	Canada	Record daily snowfall	33.8 cm (13.3 in)	39 of 100 (Notable)
Lyndon	Canada	Record daily precipitation	25.9 mm (1.0 in)	39 of 100 (Notable)
Parry Sound	Canada	Record daily precipitation	31.5 mm (1.2 in)	39 of 100 (Notable)
Pine Ridge (Windy)	Australia	Record daily precipitation	45.0 mm (1.8 in)	38 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record high minimum temperature	23.9 C (75.0 F)	38 of 100 (Notable)
Georgetown	United States	Record daily precipitation	58.7 mm (2.3 in)	38 of 100 (Notable)
Hallock	United States	Record daily precipitation	41.1 mm (1.6 in)	38 of 100 (Notable)
Heppner	United States	Record daily snowfall	7.6 cm (3.0 in)	38 of 100 (Notable)
Cooktown Post Office	Australia	Record daily precipitation	69.6 mm (2.7 in)	37 of 100 (Notable)
Three Hills	Canada	Record daily snowfall	19.8 cm (7.8 in)	37 of 100 (Notable)
Bollon Mary St	Australia	Record daily precipitation	29.5 mm (1.2 in)	36 of 100 (Notable)
Paisley	United States	Record daily snowfall	7.6 cm (3.0 in)	36 of 100 (Notable)
Lyndon	Canada	Record daily snowfall	25.9 cm (10.2 in)	35 of 100 (Notable)
Downieville	United States	Record daily precipitation	49.0 mm (1.9 in)	35 of 100 (Notable)
Tahoe City	United States	Record daily snowfall	20.3 cm (8.0 in)	35 of 100 (Notable)
Auburn	United States	Record daily precipitation	43.7 mm (1.7 in)	34 of 100 (Routine)
De Sabla	United States	Record daily snowfall	7.6 cm (3.0 in)	34 of 100 (Routine)
McCall	United States	Record daily snowfall	15.2 cm (6.0 in)	34 of 100 (Routine)
Gibson Dam	United States	Record daily precipitation	26.9 mm (1.1 in)	34 of 100 (Routine)
Fairmont	United States	Record high minimum temperature	21.1 C (70.0 F)	34 of 100 (Routine)
Napier Downs	Australia	Record daily precipitation	47.0 mm (1.9 in)	33 of 100 (Routine)
Barkestad	Norway	Record daily precipitation	38.8 mm (1.5 in)	33 of 100 (Routine)
Sierraville Rs	United States	Record daily snowfall	11.4 cm (4.5 in)	33 of 100 (Routine)
North Yancho	Australia	Record daily precipitation	35.1 mm (1.4 in)	32 of 100 (Routine)
Carway	Canada	Record daily snowfall	12.7 cm (5.0 in)	32 of 100 (Routine)
San Diego de la Union	Mexico	Record high minimum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Lake Eleanor	United States	Record daily snowfall	22.9 cm (9.0 in)	32 of 100 (Routine)
Tiger Creek Ph	United States	Record daily precipitation	35.1 mm (1.4 in)	32 of 100 (Routine)
Jiggs 3 N	United States	Record daily snowfall	7.6 cm (3.0 in)	32 of 100 (Routine)
High River	Canada	Record daily snowfall	22.9 cm (9.0 in)	31 of 100 (Routine)
Electra P H	United States	Record low maximum temperature	6.7 C (44.1 F)	31 of 100 (Routine)
Pierce Rs	United States	Record daily snowfall	8.9 cm (3.5 in)	31 of 100 (Routine)

Counts by Type and Timescale

817 records

Records set or tied on 18 April 1955 by type: Highest daily maximum 127, Lowest daily maximum 126, Highest daily minimum 201, Lowest daily minimum 54, Heaviest daily rainfall 252, Heaviest daily snowfall 53, Deepest snow cover 4.

Records on 18 April 1955 by type
Record type	Records
Highest daily maximum	127
Lowest daily maximum	126
Highest daily minimum	201
Lowest daily minimum	54
Heaviest daily rainfall	252
Heaviest daily snowfall	53
Deepest snow cover	4

Records on 18 April 1955 by timescale: all-time 2, monthly 17, daily 798.

How Much Records Were Beaten By

655 broken records

Margins by which the 655 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 330.0. Ties are not counted.

Top 20 by Significance

18 April 1955

Top 20 records on 18 April 1955 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1955	Calgary Int'l A, CA	daily snowfall	30.5 cm (12.0 in)	20.3 cm (8.0 in)	64 years	66 of 100 (Major)
18 April 1955	Calgary Int'l A, CA	daily rain	30.5 mm (1.2 in)	20.3 mm (0.8 in)	64 years	65 of 100 (Major)
18 April 1955	Gleichen, CA	monthly snowfall	38.1 cm (15.0 in)	17.8 cm (7.0 in)	22 years	61 of 100 (Major)
18 April 1955	Alexandria, US	daily rain	65.5 mm (2.6 in)	38.8 mm (1.5 in)	61 years	56 of 100 (Notable)
18 April 1955	Pleystowe Sugar Mill, AU	daily rain	111.8 mm (4.4 in)	85.1 mm (3.4 in)	38 years	55 of 100 (Notable)
18 April 1955	Mitchell 2 N, US	monthly rain	83.6 mm (3.3 in)	31.0 mm (1.2 in)	19 years	55 of 100 (Notable)
18 April 1955	Tuscarora Andrae Rch, US	daily snowfall	30.5 cm (12.0 in)	22.9 cm (9.0 in)	26 years	54 of 100 (Notable)
18 April 1955	Plane Creek Sugar Mill, AU	daily rain	157.5 mm (6.2 in)	134.6 mm (5.3 in)	32 years	53 of 100 (Notable)
18 April 1955	Walkerston, AU	daily rain	132.1 mm (5.2 in)	102.1 mm (4.0 in)	38 years	53 of 100 (Notable)
18 April 1955	Varzea Alegre, BR	daily rain	102.0 mm (4.0 in)	86.7 mm (3.4 in)	32 years	53 of 100 (Notable)
18 April 1955	Gleichen, CA	daily rain	38.1 mm (1.5 in)	29.2 mm (1.1 in)	28 years	53 of 100 (Notable)
18 April 1955	Sarina Post Office, AU	daily rain	131.8 mm (5.2 in)	108.4 mm (4.3 in)	32 years	52 of 100 (Notable)
18 April 1955	Placerville, US	daily rain	67.1 mm (2.6 in)	44.0 mm (1.7 in)	49 years	51 of 100 (Notable)
18 April 1955	Krakmo, NO	daily rain	40.2 mm (1.6 in)	27.9 mm (1.1 in)	48 years	47 of 100 (Notable)
18 April 1955	Quincy, US	daily rain	37.3 mm (1.5 in)	33.0 mm (1.3 in)	57 years	47 of 100 (Notable)
18 April 1955	Haliburton A, CA	daily rain	32.0 mm (1.3 in)	16.5 mm (0.6 in)	53 years	46 of 100 (Notable)
18 April 1955	Lambton, CA	daily rain	35.6 mm (1.4 in)	25.4 mm (1.0 in)	25 years	46 of 100 (Notable)
18 April 1955	Claresholm Meadow Creek, CA	daily rain	34.3 mm (1.4 in)	24.1 mm (0.9 in)	4 years	44 of 100 (Notable)
18 April 1955	Vulcan, CA	daily rain	33.8 mm (1.3 in)	28.7 mm (1.1 in)	4 years	44 of 100 (Notable)
18 April 1955	Atlanta 1 E, US	monthly snowfall	31.2 cm (12.3 in)	5.8 cm (2.3 in)	61 years	44 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 1955

Records set or tied on this calendar date in each year from 1793 to 1955. 1955 had 817 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 1955-04-18: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	615
50 to 100	17
100 to 150	10
150 to 200	6
200 to 250	3
250 to 300	1
300 to 350	3