Weather Records on 18 April 1976

1,309 weather records were set or tied worldwide on 18 April 1976. Highest significance: Caledonia, US.

Key Facts for 18 April 1976

On 18 April 1976, 1,309 weather records were set or tied at long-record stations worldwide.
880 were record highs and 155 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 163 monthly and 1,146 daily.
Caledonia set a daily record precipitation of 69.1 mm (2.7 in) on 18 April 1976.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 462 records.

Record Map

1,309 stations

1,309 station records on 18 April 1976 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1976: highest significance records shown on the map
Station	Country	Type	Value	Significance
Caledonia	United States	Record daily precipitation	69.1 mm (2.7 in)	71 of 100 (Major)
Iowa Falls	United States	Record daily precipitation	94.5 mm (3.7 in)	68 of 100 (Major)
Osage	United States	Record daily precipitation	54.9 mm (2.2 in)	68 of 100 (Major)
Marshalltown	United States	Record daily precipitation	65.0 mm (2.6 in)	65 of 100 (Major)
Decorah	United States	Record daily precipitation	77.0 mm (3.0 in)	63 of 100 (Major)
Japaratuba	Brazil	Record daily precipitation	91.0 mm (3.6 in)	54 of 100 (Notable)
Galesville 2WSW	United States	Record daily precipitation	65.3 mm (2.6 in)	53 of 100 (Notable)
Beja	Portugal	Record daily precipitation	35.4 mm (1.4 in)	51 of 100 (Notable)
Goliad	United States	Record daily precipitation	127.0 mm (5.0 in)	51 of 100 (Notable)
Morgantown Muni AP	United States	Record high maximum temperature	33.3 C (91.9 F)	51 of 100 (Notable)
Saguache	United States	Record daily snowfall	30.5 cm (12.0 in)	49 of 100 (Notable)
Allison	United States	Record daily precipitation	41.9 mm (1.6 in)	47 of 100 (Notable)
Toledo 3N	United States	Record daily precipitation	37.1 mm (1.5 in)	47 of 100 (Notable)
Shamakhy	Azerbaijan	Record daily precipitation	48.2 mm (1.9 in)	46 of 100 (Notable)
La Crescent Dam 7	United States	Record daily precipitation	59.7 mm (2.4 in)	46 of 100 (Notable)
Trempealeau Dam 6	United States	Record daily precipitation	64.0 mm (2.5 in)	46 of 100 (Notable)
Cresco 1 NE	United States	Record daily precipitation	71.9 mm (2.8 in)	45 of 100 (Notable)
Leavenworth	United States	Record daily precipitation	32.8 mm (1.3 in)	45 of 100 (Notable)
Nashua 2 NNW	United States	Record high maximum temperature	33.3 C (91.9 F)	45 of 100 (Notable)
Philadelphia City	United States	Record high maximum temperature	35.6 C (96.1 F)	45 of 100 (Notable)
Webster City	United States	Record daily precipitation	43.2 mm (1.7 in)	44 of 100 (Notable)
Riomedina	United States	Record daily precipitation	130.8 mm (5.1 in)	44 of 100 (Notable)
Taylor	United States	Record daily precipitation	88.9 mm (3.5 in)	44 of 100 (Notable)
Oconomowoc Wwtp	United States	Record high minimum temperature	16.7 C (62.1 F)	44 of 100 (Notable)
Philadelphia City	United States	Record high minimum temperature	21.7 C (71.1 F)	44 of 100 (Notable)
Austin-Camp Mabry	United States	Record daily precipitation	90.4 mm (3.6 in)	44 of 100 (Notable)
Grundy Ctr	United States	Record daily precipitation	70.4 mm (2.8 in)	43 of 100 (Notable)
Moorestown 4 E	United States	Record high maximum temperature	35.0 C (95.0 F)	43 of 100 (Notable)
Quinton	United States	Record daily precipitation	65.8 mm (2.6 in)	43 of 100 (Notable)
Antigo	United States	Record daily precipitation	72.6 mm (2.9 in)	43 of 100 (Notable)
Traverse Cy Cherry Capital AP	United States	Record high minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Norfolk 2 SW	United States	Record high maximum temperature	28.3 C (82.9 F)	42 of 100 (Notable)
Benton Harbor AP	United States	Record high minimum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Grayling	United States	Record high minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Plainfield	United States	Record high maximum temperature	36.1 C (97.0 F)	42 of 100 (Notable)
Bulverde	United States	Record daily precipitation	88.1 mm (3.5 in)	42 of 100 (Notable)
Ny City Cntrl Park	United States	Record high maximum temperature	35.6 C (96.1 F)	42 of 100 (Notable)
Hampton	United States	Record daily precipitation	35.6 mm (1.4 in)	41 of 100 (Notable)
Northwood	United States	Record daily precipitation	31.5 mm (1.2 in)	41 of 100 (Notable)
Clinton	United States	Record high minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Wytheville	United States	Record high maximum temperature	31.1 C (88.0 F)	41 of 100 (Notable)
Newton	United States	Record daily precipitation	43.4 mm (1.7 in)	40 of 100 (Notable)
Blanco	United States	Record daily precipitation	87.9 mm (3.5 in)	40 of 100 (Notable)
Marathon	United States	Record low minimum temperature	-3.3 C (26.1 F)	40 of 100 (Notable)
Forest City 2 NNE	United States	Record daily precipitation	34.0 mm (1.3 in)	39 of 100 (Notable)
Gardiner	United States	Record high maximum temperature	30.6 C (87.1 F)	39 of 100 (Notable)
Fitchburg 4 SE	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
Keene	United States	Record high maximum temperature	32.2 C (90.0 F)	39 of 100 (Notable)
Boerne	United States	Record daily precipitation	137.7 mm (5.4 in)	39 of 100 (Notable)
Merrill	United States	Record daily precipitation	42.4 mm (1.7 in)	39 of 100 (Notable)
Ellendale	Australia	Record daily precipitation	29.0 mm (1.1 in)	38 of 100 (Notable)
Toronto	Canada	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Kalkoenkrans (Pol)	South Africa	Record daily precipitation	27.5 mm (1.1 in)	38 of 100 (Notable)
Atlantic 1 NE	United States	Record daily precipitation	47.2 mm (1.9 in)	38 of 100 (Notable)
Harbor Beach 1 SSE	United States	Record high minimum temperature	13.3 C (55.9 F)	38 of 100 (Notable)
Mohonk Lake	United States	Record high maximum temperature	32.8 C (91.0 F)	38 of 100 (Notable)
Woodstock	United States	Record high maximum temperature	30.6 C (87.1 F)	38 of 100 (Notable)
Tecamachalco	Mexico	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Boone	United States	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Jefferson	United States	Record daily precipitation	47.5 mm (1.9 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,309 records

Records set or tied on 18 April 1976 by type: Highest daily maximum 535, Lowest daily maximum 63, Highest daily minimum 345, Lowest daily minimum 92, Heaviest daily rainfall 252, Heaviest daily snowfall 8, Deepest snow cover 14.

Records on 18 April 1976 by type
Record type	Records
Highest daily maximum	535
Lowest daily maximum	63
Highest daily minimum	345
Lowest daily minimum	92
Heaviest daily rainfall	252
Heaviest daily snowfall	8
Deepest snow cover	14

Records on 18 April 1976 by timescale: all-time 0, monthly 163, daily 1,146.

How Much Records Were Beaten By

1,083 broken records

Margins by which the 1,083 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 490.0. Ties are not counted.

Top 20 by Significance

18 April 1976

Top 20 records on 18 April 1976 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1976	Caledonia, US	daily rain	69.1 mm (2.7 in)	46.2 mm (1.8 in)	77 years	71 of 100 (Major)
18 April 1976	Iowa Falls, US	monthly rain	94.5 mm (3.7 in)	23.9 mm (0.9 in)	80 years	68 of 100 (Major)
18 April 1976	Osage, US	daily rain	54.9 mm (2.2 in)	31.0 mm (1.2 in)	77 years	68 of 100 (Major)
18 April 1976	Marshalltown, US	daily rain	65.0 mm (2.6 in)	45.2 mm (1.8 in)	58 years	65 of 100 (Major)
18 April 1976	Decorah, US	daily rain	77.0 mm (3.0 in)	57.4 mm (2.3 in)	50 years	63 of 100 (Major)
18 April 1976	Japaratuba, BR	daily rain	91.0 mm (3.6 in)	51.2 mm (2.0 in)	56 years	54 of 100 (Notable)
18 April 1976	Galesville 2WSW, US	daily rain	65.3 mm (2.6 in)	38.9 mm (1.5 in)	35 years	53 of 100 (Notable)
18 April 1976	Beja, PT	daily rain	35.4 mm (1.4 in)	29.8 mm (1.2 in)	27 years	51 of 100 (Notable)
18 April 1976	Goliad, US	daily rain	127.0 mm (5.0 in)	104.4 mm (4.1 in)	18 years	51 of 100 (Notable)
18 April 1976	Morgantown Muni AP, US	monthly high max	33.3 C (91.9 F)	1.6 C (2.9 F)	97 years	51 of 100 (Notable)
18 April 1976	Saguache, US	monthly snowfall	30.5 cm (12.0 in)	7.6 cm (3.0 in)	64 years	49 of 100 (Notable)
18 April 1976	Allison, US	daily rain	41.9 mm (1.6 in)	29.5 mm (1.2 in)	25 years	47 of 100 (Notable)
18 April 1976	Toledo 3N, US	daily rain	37.1 mm (1.5 in)	18.0 mm (0.7 in)	68 years	47 of 100 (Notable)
18 April 1976	Shamakhy, AZ	daily rain	48.2 mm (1.9 in)	30.0 mm (1.2 in)	7 years	46 of 100 (Notable)
18 April 1976	La Crescent Dam 7, US	daily rain	59.7 mm (2.4 in)	29.7 mm (1.2 in)	35 years	46 of 100 (Notable)
18 April 1976	Trempealeau Dam 6, US	daily rain	64.0 mm (2.5 in)	28.7 mm (1.1 in)	35 years	46 of 100 (Notable)
18 April 1976	Cresco 1 NE, US	monthly rain	71.9 mm (2.8 in)	23.6 mm (0.9 in)	7 years	45 of 100 (Notable)
18 April 1976	Leavenworth, US	daily rain	32.8 mm (1.3 in)	25.2 mm (1.0 in)	56 years	45 of 100 (Notable)
18 April 1976	Nashua 2 NNW, US	daily high max	33.3 C (91.9 F)	6.6 C (11.9 F)	89 years	45 of 100 (Notable)
18 April 1976	Philadelphia City, US	monthly high max	35.6 C (96.1 F)	1.7 C (3.1 F)	79 years	45 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 1976

Records set or tied on this calendar date in each year from 1793 to 1976. 1976 had 1,309 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 1976-04-18: 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 100	1,074
100 to 200	3
200 to 300	4
300 to 400	0
400 to 500	2