Weather Records on 23 April 1977

979 weather records were set or tied worldwide on 23 April 1977. Highest significance: Port Dover, CA.

Key Facts for 23 April 1977

On 23 April 1977, 979 weather records were set or tied at long-record stations worldwide.
526 were record highs and 71 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 65 monthly and 913 daily.
Port Dover set a daily record precipitation of 62.4 mm (2.5 in) on 23 April 1977.
Across 167 earlier years (1800 to 2026) the same calendar date averaged 441 records.

Record Map

979 stations

979 station records on 23 April 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 April 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Port Dover	Canada	Record daily precipitation	62.4 mm (2.5 in)	69 of 100 (Major)
Toledo Blade	United States	Record daily precipitation	95.3 mm (3.8 in)	63 of 100 (Major)
Fredonia	United States	Record daily precipitation	84.3 mm (3.3 in)	60 of 100 (Major)
Defiance	United States	Record daily precipitation	104.1 mm (4.1 in)	57 of 100 (Notable)
Aracatu (Sao Pedro)	Brazil	Record daily precipitation	66.8 mm (2.6 in)	55 of 100 (Notable)
Gowanda Correctional	United States	Record daily precipitation	86.4 mm (3.4 in)	55 of 100 (Notable)
Wauseon Wtp	United States	Record daily precipitation	87.6 mm (3.4 in)	53 of 100 (Notable)
Monroeville 1 NW	United States	Record daily precipitation	55.9 mm (2.2 in)	52 of 100 (Notable)
Tsalka	Georgia	Record daily precipitation	35.9 mm (1.4 in)	51 of 100 (Notable)
Griffiss AFB	United States	Record daily precipitation	45.2 mm (1.8 in)	51 of 100 (Notable)
Monroe	United States	Record daily precipitation	55.4 mm (2.2 in)	50 of 100 (Notable)
Westfield 2 SSE	United States	Record daily precipitation	69.3 mm (2.7 in)	50 of 100 (Notable)
Paulding	United States	Record daily precipitation	61.7 mm (2.4 in)	49 of 100 (Notable)
Arcade	United States	Record daily precipitation	58.7 mm (2.3 in)	48 of 100 (Notable)
Auburn	United States	Record daily precipitation	43.9 mm (1.7 in)	48 of 100 (Notable)
Aldeia	Brazil	Record daily precipitation	50.2 mm (2.0 in)	47 of 100 (Notable)
Corry	United States	Record daily precipitation	52.1 mm (2.1 in)	47 of 100 (Notable)
Parateca	Brazil	Record daily precipitation	77.0 mm (3.0 in)	46 of 100 (Notable)
Humansdorp (Pol)	South Africa	Record daily precipitation	52.5 mm (2.1 in)	46 of 100 (Notable)
Columbus	United States	Record daily precipitation	63.2 mm (2.5 in)	46 of 100 (Notable)
Greenville 2 NE	United States	Record daily precipitation	31.8 mm (1.3 in)	45 of 100 (Notable)
Little Falls City Rsch	United States	Record daily precipitation	26.7 mm (1.1 in)	44 of 100 (Notable)
Fulton	United States	Record daily precipitation	37.3 mm (1.5 in)	43 of 100 (Notable)
Belfast	United States	Record high minimum temperature	10.0 C (50.0 F)	42 of 100 (Notable)
Lockport 2SE	United States	Record daily precipitation	33.5 mm (1.3 in)	42 of 100 (Notable)
Put-In-Bay	United States	Record daily precipitation	49.5 mm (1.9 in)	42 of 100 (Notable)
Wilbur	United States	Record high minimum temperature	13.3 C (55.9 F)	42 of 100 (Notable)
Schenectady	United States	Record daily precipitation	39.4 mm (1.6 in)	42 of 100 (Notable)
Glens Falls AP	United States	Record daily precipitation	45.2 mm (1.8 in)	42 of 100 (Notable)
Erie Intl AP	United States	Record daily precipitation	50.0 mm (2.0 in)	42 of 100 (Notable)
Pilao Arcado	Brazil	Record daily precipitation	48.0 mm (1.9 in)	41 of 100 (Notable)
Ft Wayne Disposal Plt	United States	Record daily precipitation	69.9 mm (2.8 in)	41 of 100 (Notable)
Arkansas City	United States	Record daily precipitation	83.6 mm (3.3 in)	41 of 100 (Notable)
Oliveira Dos Brejinhos	Brazil	Record daily precipitation	44.3 mm (1.7 in)	40 of 100 (Notable)
Caryville	United States	Record daily precipitation	113.0 mm (4.4 in)	40 of 100 (Notable)
Adrian 2 NNE	United States	Record daily precipitation	34.8 mm (1.4 in)	40 of 100 (Notable)
Bowling Green Wwtp	United States	Record daily precipitation	78.0 mm (3.1 in)	40 of 100 (Notable)
Pomeroy	United States	Record high minimum temperature	12.2 C (54.0 F)	39 of 100 (Notable)
Brejolandia (Brejo Velho)	Brazil	Record daily precipitation	42.3 mm (1.7 in)	38 of 100 (Notable)
Mooredale	South Africa	Record daily precipitation	29.0 mm (1.1 in)	38 of 100 (Notable)
Steytlerville (Mag)	South Africa	Record daily precipitation	25.0 mm (1.0 in)	38 of 100 (Notable)
Wallace 2 E	United States	Record daily precipitation	109.2 mm (4.3 in)	38 of 100 (Notable)
Challis	United States	Record high maximum temperature	28.3 C (82.9 F)	38 of 100 (Notable)
Franklin	United States	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Welland	Canada	Record daily precipitation	28.0 mm (1.1 in)	37 of 100 (Notable)
Dundee 2NE	United States	Record daily precipitation	58.7 mm (2.3 in)	37 of 100 (Notable)
Greensburg	United States	Record daily precipitation	29.7 mm (1.2 in)	37 of 100 (Notable)
Morrisville 6 SW	United States	Record daily precipitation	39.6 mm (1.6 in)	36 of 100 (Notable)
Fremont	United States	Record daily precipitation	45.5 mm (1.8 in)	36 of 100 (Notable)
Fazenda Timbauba	Brazil	Record daily precipitation	130.0 mm (5.1 in)	35 of 100 (Notable)
Kozhikode	India	Record daily precipitation	80.0 mm (3.1 in)	35 of 100 (Notable)
Niceville	United States	Record daily precipitation	91.4 mm (3.6 in)	35 of 100 (Notable)
Paoli	United States	Record daily precipitation	48.3 mm (1.9 in)	35 of 100 (Notable)
Edmonton 3 W	United States	Record daily precipitation	31.2 mm (1.2 in)	35 of 100 (Notable)
Batavia	United States	Record daily precipitation	45.2 mm (1.8 in)	35 of 100 (Notable)
New London Lock #22	United States	Record daily precipitation	38.1 mm (1.5 in)	35 of 100 (Notable)
Portageville 1N	United States	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Montpelier	United States	Record daily precipitation	46.2 mm (1.8 in)	35 of 100 (Notable)
Dayton 1 WSW	United States	Record high maximum temperature	30.0 C (86.0 F)	35 of 100 (Notable)
Buffalo	United States	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)

Counts by Type and Timescale

979 records

Records set or tied on 23 April 1977 by type: Highest daily maximum 284, Lowest daily maximum 40, Highest daily minimum 242, Lowest daily minimum 31, Heaviest daily rainfall 379, Deepest snow cover 3.

Records on 23 April 1977 by type
Record type	Records
Highest daily maximum	284
Lowest daily maximum	40
Highest daily minimum	242
Lowest daily minimum	31
Heaviest daily rainfall	379
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 23 April 1977 by timescale: all-time 1, monthly 65, daily 913.

How Much Records Were Beaten By

807 broken records

Margins by which the 807 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 153.0. Ties are not counted.

Top 20 by Significance

23 April 1977

Top 20 records on 23 April 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 April 1977	Port Dover, CA	daily rain	62.4 mm (2.5 in)	35.0 mm (1.4 in)	64 years	69 of 100 (Major)
23 April 1977	Toledo Blade, US	monthly rain	95.3 mm (3.8 in)	22.9 mm (0.9 in)	48 years	63 of 100 (Major)
23 April 1977	Fredonia, US	monthly rain	84.3 mm (3.3 in)	36.8 mm (1.4 in)	15 years	60 of 100 (Major)
23 April 1977	Defiance, US	monthly rain	104.1 mm (4.1 in)	29.2 mm (1.1 in)	20 years	57 of 100 (Notable)
23 April 1977	Aracatu (Sao Pedro), BR	daily rain	66.8 mm (2.6 in)	55.1 mm (2.2 in)	39 years	55 of 100 (Notable)
23 April 1977	Gowanda Correctional, US	monthly rain	86.4 mm (3.4 in)	47.8 mm (1.9 in)	8 years	55 of 100 (Notable)
23 April 1977	Wauseon Wtp, US	monthly rain	87.6 mm (3.4 in)	10.4 mm (0.4 in)	81 years	53 of 100 (Notable)
23 April 1977	Monroeville 1 NW, US	daily rain	55.9 mm (2.2 in)	37.6 mm (1.5 in)	32 years	52 of 100 (Notable)
23 April 1977	Tsalka, GE	daily rain	35.9 mm (1.4 in)	23.7 mm (0.9 in)	24 years	51 of 100 (Notable)
23 April 1977	Griffiss AFB, US	daily rain	45.2 mm (1.8 in)	14.7 mm (0.6 in)	78 years	51 of 100 (Notable)
23 April 1977	Monroe, US	daily rain	55.4 mm (2.2 in)	36.1 mm (1.4 in)	14 years	50 of 100 (Notable)
23 April 1977	Westfield 2 SSE, US	daily rain	69.3 mm (2.7 in)	42.6 mm (1.7 in)	8 years	50 of 100 (Notable)
23 April 1977	Paulding, US	daily rain	61.7 mm (2.4 in)	33.8 mm (1.3 in)	12 years	49 of 100 (Notable)
23 April 1977	Arcade, US	monthly rain	58.7 mm (2.3 in)	15.8 mm (0.6 in)	30 years	48 of 100 (Notable)
23 April 1977	Auburn, US	daily rain	43.9 mm (1.7 in)	24.1 mm (0.9 in)	8 years	48 of 100 (Notable)
23 April 1977	Aldeia, BR	daily rain	50.2 mm (2.0 in)	39.3 mm (1.5 in)	24 years	47 of 100 (Notable)
23 April 1977	Corry, US	daily rain	52.1 mm (2.1 in)	27.5 mm (1.1 in)	11 years	47 of 100 (Notable)
23 April 1977	Parateca, BR	daily rain	77.0 mm (3.0 in)	72.0 mm (2.8 in)	10 years	46 of 100 (Notable)
23 April 1977	Humansdorp (Pol), ZA	daily rain	52.5 mm (2.1 in)	27.6 mm (1.1 in)	63 years	46 of 100 (Notable)
23 April 1977	Columbus, US	daily rain	63.2 mm (2.5 in)	34.0 mm (1.3 in)	32 years	46 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

1800 to 1977

Records set or tied on this calendar date in each year from 1800 to 1977. 1977 had 979 records.

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

Records on 04-23 in each year
Year	Records
1800	1
1809	1
1812	1
1817	3
1838	1
1840	1
1842	1
1851	1
1852	2
1854	1
1855	5
1857	2
1859	1
1861	1
1865	1
1868	2
1870	1
1872	1
1873	4
1874	4
1875	1
1877	1
1878	1
1879	1
1881	2
1882	1
1883	2
1884	3
1885	4
1886	4
1888	1
1889	1
1890	4
1891	2
1892	1
1893	2
1895	3
1896	4
1897	2
1898	1
1899	6
1900	4
1901	9
1902	12
1903	20
1904	8
1905	7
1906	23
1907	12
1908	14
1909	28
1910	35
1911	21
1912	29
1913	40
1914	71
1915	41
1916	35
1917	37
1918	92
1919	66
1920	75
1921	81
1922	45
1923	132
1924	111
1925	506
1926	124
1927	562
1928	302
1929	103
1930	487
1931	506
1932	231
1933	361
1934	272
1935	152
1936	342
1937	321
1938	177
1939	339
1940	319
1941	277
1942	473
1943	819
1944	678
1945	364
1946	649
1947	242
1948	401
1949	401
1950	577
1951	426
1952	500
1953	300
1954	548
1955	654
1956	581
1957	623
1958	649
1959	442
1960	1,648
1961	884
1962	389
1963	801
1964	958
1965	660
1966	386
1967	1,183
1968	816
1969	705
1970	1,209
1971	508
1972	332
1973	518
1974	486
1975	411
1976	386
1977	979
1978	523
1979	554
1980	1,460
1981	1,124
1982	1,191
1983	1,031
1984	971
1985	1,011
1986	1,541
1987	676
1988	1,051
1989	1,469
1990	1,077
1991	638
1992	592
1993	1,256
1994	666
1995	1,464
1996	1,520
1997	1,024
1998	1,446
1999	1,198
2000	1,003
2001	1,435
2002	971
2003	557
2004	610
2005	940
2006	839
2007	847
2008	775
2009	920
2010	1,040
2011	1,190
2012	1,796
2013	1,655
2014	362
2015	511
2016	542
2017	474
2018	684
2019	668
2020	564
2021	562
2022	692
2023	980
2024	583
2025	410
2026	503

Download the Data

Data for records on 1977-04-23: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 20	745
20 to 40	46
40 to 60	11
60 to 80	4
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1