Weather Records on 18 April 1975

751 weather records were set or tied worldwide on 18 April 1975. Highest significance: Brucefield, CA.

Key Facts for 18 April 1975

On 18 April 1975, 751 weather records were set or tied at long-record stations worldwide.
202 were record highs and 114 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 17 monthly and 733 daily.
Brucefield set a monthly record daily precipitation of 83.8 mm (3.3 in) on 18 April 1975.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 466 records.

Record Map

751 stations

751 station records on 18 April 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Brucefield	Canada	Record daily precipitation	83.8 mm (3.3 in)	68 of 100 (Major)
Monmouth	United States	Record daily precipitation	62.0 mm (2.4 in)	65 of 100 (Major)
S Bend AP	United States	Record daily precipitation	49.5 mm (1.9 in)	65 of 100 (Major)
Ottawa 4SW	United States	Record daily precipitation	63.2 mm (2.5 in)	58 of 100 (Notable)
Wialki North	Australia	Record daily precipitation	61.0 mm (2.4 in)	57 of 100 (Notable)
Melrose	Australia	Record daily precipitation	37.6 mm (1.5 in)	57 of 100 (Notable)
Nicosia	Cyprus	Record daily precipitation	50.5 mm (2.0 in)	56 of 100 (Notable)
Collbran	United States	Record daily snowfall	24.1 cm (9.5 in)	56 of 100 (Notable)
Aurora Water	United States	Record daily precipitation	50.8 mm (2.0 in)	56 of 100 (Notable)
Chicago Midway AP 3SW	United States	Record daily precipitation	97.3 mm (3.8 in)	56 of 100 (Notable)
Munjeroo	Australia	Record daily precipitation	40.0 mm (1.6 in)	55 of 100 (Notable)
Galesburg	United States	Record daily precipitation	60.7 mm (2.4 in)	55 of 100 (Notable)
Cochrane	Canada	Record daily precipitation	29.0 mm (1.1 in)	54 of 100 (Notable)
Yakabindie	Australia	Record daily precipitation	37.0 mm (1.5 in)	53 of 100 (Notable)
Peotone	United States	Record daily precipitation	58.4 mm (2.3 in)	53 of 100 (Notable)
Milford Gm Proving Ground	United States	Record daily precipitation	62.5 mm (2.5 in)	52 of 100 (Notable)
Killara	Australia	Record daily precipitation	40.0 mm (1.6 in)	51 of 100 (Notable)
Wialki	Australia	Record daily precipitation	37.0 mm (1.5 in)	51 of 100 (Notable)
Coldwater St School	United States	Record daily precipitation	47.0 mm (1.9 in)	51 of 100 (Notable)
Grand Junction Walker Fld	United States	Record snow depth	17.8 cm (7.0 in)	51 of 100 (Notable)
Unionville	United States	Record daily precipitation	42.2 mm (1.7 in)	50 of 100 (Notable)
Mt Clemens Ang Base	United States	Record daily precipitation	30.7 mm (1.2 in)	50 of 100 (Notable)
Weebo	Australia	Record daily precipitation	36.2 mm (1.4 in)	49 of 100 (Notable)
Mount Forest	Canada	Record daily precipitation	33.0 mm (1.3 in)	49 of 100 (Notable)
Princeville	United States	Record daily precipitation	57.2 mm (2.3 in)	48 of 100 (Notable)
Beria	Australia	Record daily precipitation	66.6 mm (2.6 in)	46 of 100 (Notable)
Wyndham Post Office	Australia	Record daily precipitation	82.0 mm (3.2 in)	46 of 100 (Notable)
Kit Carson	United States	Record daily snowfall	7.6 cm (3.0 in)	46 of 100 (Notable)
Benton Harbor AP	United States	Record daily precipitation	57.9 mm (2.3 in)	46 of 100 (Notable)
Gothenburg	United States	Record daily snowfall	8.9 cm (3.5 in)	45 of 100 (Notable)
Yeelirrie	Australia	Record daily precipitation	26.4 mm (1.0 in)	44 of 100 (Notable)
Fergus Shand Dam	Canada	Record daily precipitation	42.2 mm (1.7 in)	44 of 100 (Notable)
Marseilles Lock/Dam	United States	Record daily precipitation	64.5 mm (2.5 in)	44 of 100 (Notable)
Utica Starved Rock Dam	United States	Record daily precipitation	53.3 mm (2.1 in)	44 of 100 (Notable)
Auburn 2 SSE	United States	Record daily precipitation	35.8 mm (1.4 in)	44 of 100 (Notable)
Cathcart (Old Post Office)	Australia	Record daily precipitation	54.4 mm (2.1 in)	43 of 100 (Notable)
Kitchener	Canada	Record daily precipitation	44.2 mm (1.7 in)	43 of 100 (Notable)
Gander Int'l A	Canada	Record daily snowfall	17.3 cm (6.8 in)	43 of 100 (Notable)
Welbekend	South Africa	Record daily precipitation	54.0 mm (2.1 in)	43 of 100 (Notable)
Dillon 1 E	United States	Record daily snowfall	30.5 cm (12.0 in)	43 of 100 (Notable)
Joliet Brandon Road Lock/Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Streator 2SE	United States	Record daily precipitation	45.7 mm (1.8 in)	43 of 100 (Notable)
Tiskilwa 2 SE	United States	Record daily precipitation	43.7 mm (1.7 in)	43 of 100 (Notable)
Fruita	United States	Record daily snowfall	5.1 cm (2.0 in)	42 of 100 (Notable)
Rocky Ford 2 SE	United States	Record daily snowfall	6.4 cm (2.5 in)	42 of 100 (Notable)
Wheaton 3 SE	United States	Record daily precipitation	45.7 mm (1.8 in)	42 of 100 (Notable)
Keosauqua	United States	Record daily precipitation	31.8 mm (1.3 in)	42 of 100 (Notable)
Hastings Dam 2	United States	Record daily precipitation	25.9 mm (1.0 in)	42 of 100 (Notable)
Narndee	Australia	Record daily precipitation	25.0 mm (1.0 in)	41 of 100 (Notable)
Yandal	Australia	Record daily precipitation	25.0 mm (1.0 in)	41 of 100 (Notable)
Amos	Canada	Record daily precipitation	26.2 mm (1.0 in)	41 of 100 (Notable)
Nalbaugh State Forest	Australia	Record daily precipitation	66.0 mm (2.6 in)	40 of 100 (Notable)
Cashmere Downs	Australia	Record daily precipitation	31.2 mm (1.2 in)	38 of 100 (Notable)
Glenorn	Australia	Record daily precipitation	37.4 mm (1.5 in)	37 of 100 (Notable)
Woodstock	Canada	Record daily precipitation	37.8 mm (1.5 in)	37 of 100 (Notable)
Mc Cook	United States	Record daily snowfall	6.4 cm (2.5 in)	37 of 100 (Notable)
Jouerdine South	Australia	Record daily precipitation	25.2 mm (1.0 in)	36 of 100 (Notable)
Bemboka Post Office	Australia	Record daily precipitation	79.0 mm (3.1 in)	36 of 100 (Notable)
Bettowynd (Condry)	Australia	Record daily precipitation	77.0 mm (3.0 in)	36 of 100 (Notable)
San Sebastian - Igueldo	Spain	Record daily precipitation	38.3 mm (1.5 in)	36 of 100 (Notable)

Counts by Type and Timescale

751 records

Records set or tied on 18 April 1975 by type: Highest daily maximum 53, Lowest daily maximum 56, Highest daily minimum 149, Lowest daily minimum 58, Heaviest daily rainfall 337, Heaviest daily snowfall 64, Deepest snow cover 34.

Records on 18 April 1975 by type
Record type	Records
Highest daily maximum	53
Lowest daily maximum	56
Highest daily minimum	149
Lowest daily minimum	58
Heaviest daily rainfall	337
Heaviest daily snowfall	64
Deepest snow cover	34

Records on 18 April 1975 by timescale: all-time 1, monthly 17, daily 733.

How Much Records Were Beaten By

610 broken records

Margins by which the 610 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

18 April 1975

Top 20 records on 18 April 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1975	Brucefield, CA	monthly rain	83.8 mm (3.3 in)	34.8 mm (1.4 in)	37 years	68 of 100 (Major)
18 April 1975	Monmouth, US	daily rain	62.0 mm (2.4 in)	40.4 mm (1.6 in)	65 years	65 of 100 (Major)
18 April 1975	S Bend AP, US	daily rain	49.5 mm (1.9 in)	32.7 mm (1.3 in)	64 years	65 of 100 (Major)
18 April 1975	Ottawa 4SW, US	daily rain	63.2 mm (2.5 in)	42.9 mm (1.7 in)	34 years	58 of 100 (Notable)
18 April 1975	Wialki North, AU	daily rain	61.0 mm (2.4 in)	51.6 mm (2.0 in)	44 years	57 of 100 (Notable)
18 April 1975	Melrose, AU	daily rain	37.6 mm (1.5 in)	37.6 mm (1.5 in)	48 years	57 of 100 (Notable)
18 April 1975	Nicosia, CY	daily rain	50.5 mm (2.0 in)	28.7 mm (1.1 in)	25 years	56 of 100 (Notable)
18 April 1975	Collbran, US	daily snowfall	24.1 cm (9.5 in)	16.5 cm (6.5 in)	57 years	56 of 100 (Notable)
18 April 1975	Aurora Water, US	daily rain	50.8 mm (2.0 in)	34.3 mm (1.4 in)	48 years	56 of 100 (Notable)
18 April 1975	Chicago Midway AP 3SW, US	monthly rain	97.3 mm (3.8 in)	31.8 mm (1.3 in)	28 years	56 of 100 (Notable)
18 April 1975	Munjeroo, AU	daily rain	40.0 mm (1.6 in)	37.0 mm (1.5 in)	37 years	55 of 100 (Notable)
18 April 1975	Galesburg, US	daily rain	60.7 mm (2.4 in)	31.5 mm (1.2 in)	65 years	55 of 100 (Notable)
18 April 1975	Cochrane, CA	daily rain	29.0 mm (1.1 in)	19.1 mm (0.8 in)	40 years	54 of 100 (Notable)
18 April 1975	Yakabindie, AU	daily rain	37.0 mm (1.5 in)	34.5 mm (1.4 in)	32 years	53 of 100 (Notable)
18 April 1975	Peotone, US	daily rain	58.4 mm (2.3 in)	50.3 mm (2.0 in)	33 years	53 of 100 (Notable)
18 April 1975	Milford Gm Proving Ground, US	daily rain	62.5 mm (2.5 in)	49.8 mm (2.0 in)	28 years	52 of 100 (Notable)
18 April 1975	Killara, AU	daily rain	40.0 mm (1.6 in)	35.4 mm (1.4 in)	22 years	51 of 100 (Notable)
18 April 1975	Wialki, AU	daily rain	37.0 mm (1.5 in)	35.5 mm (1.4 in)	24 years	51 of 100 (Notable)
18 April 1975	Coldwater St School, US	daily rain	47.0 mm (1.9 in)	29.7 mm (1.2 in)	37 years	51 of 100 (Notable)
18 April 1975	Grand Junction Walker Fld, US	monthly snow depth	17.8 cm (7.0 in)	12.7 cm (5.0 in)	74 years	51 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 1975

Records set or tied on this calendar date in each year from 1793 to 1975. 1975 had 751 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 1975-04-18: 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	567
50 to 100	23
100 to 150	10
150 to 200	3
200 to 250	3
250 to 300	1
300 to 350	1
350 to 400	2