Weather Records on 11 April 1977

1,231 weather records were set or tied worldwide on 11 April 1977. Highest significance: Kazan, RU.

Key Facts for 11 April 1977

On 11 April 1977, 1,231 weather records were set or tied at long-record stations worldwide.
842 were record highs and 196 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 29 monthly and 1,201 daily.
Kazan set a daily record precipitation of 32.2 mm (1.3 in) on 11 April 1977.
Across 164 earlier years (1800 to 2026) the same calendar date averaged 476 records.

Record Map

1,231 stations

1,231 station records on 11 April 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 April 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Kazan	Russia	Record daily precipitation	32.2 mm (1.3 in)	69 of 100 (Major)
Worcester	South Africa	Record daily precipitation	38.0 mm (1.5 in)	63 of 100 (Major)
Harderug	South Africa	Record daily precipitation	28.0 mm (1.1 in)	59 of 100 (Notable)
Izana	Spain	Record daily precipitation	62.6 mm (2.5 in)	58 of 100 (Notable)
Acude Mundo Novo	Brazil	Record daily precipitation	155.4 mm (6.1 in)	57 of 100 (Notable)
Milgarra	Australia	Record daily precipitation	73.6 mm (2.9 in)	55 of 100 (Notable)
Violet Town	Australia	Record daily precipitation	36.0 mm (1.4 in)	50 of 100 (Notable)
Pericos	Mexico	Record daily precipitation	29.0 mm (1.1 in)	50 of 100 (Notable)
Sandheads	India	Record daily precipitation	59.9 mm (2.4 in)	49 of 100 (Notable)
Manitowoc	United States	Record high maximum temperature	28.3 C (82.9 F)	46 of 100 (Notable)
Sharon Springs	United States	Record high minimum temperature	16.7 C (62.1 F)	45 of 100 (Notable)
Weyerhaeuser 1N	United States	Record high minimum temperature	19.4 C (66.9 F)	44 of 100 (Notable)
Clyde A	Canada	Record daily snowfall	9.6 cm (3.8 in)	43 of 100 (Notable)
Normanton Post Office	Australia	Record daily precipitation	48.0 mm (1.9 in)	42 of 100 (Notable)
Port Washington	United States	Record high minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Cambridge Galt Moe	Canada	Record low minimum temperature	-10.0 C (14.0 F)	41 of 100 (Notable)
Middelpos (Pol)	South Africa	Record daily precipitation	27.5 mm (1.1 in)	41 of 100 (Notable)
Estherville 4E	United States	Record high minimum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Greeley	United States	Record high minimum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Racine Wwtp	United States	Record high minimum temperature	18.3 C (64.9 F)	40 of 100 (Notable)
Gorlitz	Germany	Record snow depth	14.0 cm (5.5 in)	39 of 100 (Notable)
McGregor (Pol)	South Africa	Record daily precipitation	30.0 mm (1.2 in)	39 of 100 (Notable)
Ida Grove 5NW	United States	Record high minimum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Phillipsburg 1 SSE	United States	Record high minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Sheboygan	United States	Record high minimum temperature	17.8 C (64.0 F)	39 of 100 (Notable)
Port Hastings	Canada	Record low minimum temperature	-9.4 C (15.1 F)	38 of 100 (Notable)
Albacete Los Llanos	Spain	Record low minimum temperature	-5.4 C (22.3 F)	38 of 100 (Notable)
Iowa Falls	United States	Record high minimum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Fairmont	United States	Record high minimum temperature	16.1 C (61.0 F)	38 of 100 (Notable)
Leroy 5 WSW	United States	Record high minimum temperature	9.4 C (48.9 F)	37 of 100 (Notable)
Rockwell City	United States	Record high minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Grand Meadow	United States	Record high maximum temperature	28.3 C (82.9 F)	37 of 100 (Notable)
Madison	United States	Record high minimum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Mauston 1 SE	United States	Record high minimum temperature	12.2 C (54.0 F)	37 of 100 (Notable)
Sturgeon Bay Exp Farm	United States	Record high maximum temperature	27.2 C (81.0 F)	37 of 100 (Notable)
Acatlan de Osorio (Smn)	Mexico	Record low maximum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Rocky Ford 2 SE	United States	Record high minimum temperature	11.1 C (52.0 F)	36 of 100 (Notable)
Valparaiso Wtr Wks	United States	Record high minimum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Elkader 6 SSW	United States	Record high maximum temperature	28.9 C (84.0 F)	36 of 100 (Notable)
Oskaloosa	United States	Record high minimum temperature	18.3 C (64.9 F)	36 of 100 (Notable)
W Pt	United States	Record high minimum temperature	15.0 C (59.0 F)	36 of 100 (Notable)
Freiburg	Germany	Record low maximum temperature	4.0 C (39.2 F)	35 of 100 (Notable)
Estherville 4E	United States	Record high maximum temperature	28.9 C (84.0 F)	35 of 100 (Notable)
Saint Francis	United States	Record high minimum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Taipu	Brazil	Record daily precipitation	85.4 mm (3.4 in)	34 of 100 (Routine)
Leroy 5 WSW	United States	Record high maximum temperature	28.9 C (84.0 F)	34 of 100 (Routine)
Albion	United States	Record high maximum temperature	29.4 C (84.9 F)	34 of 100 (Routine)
Northwood	United States	Record high minimum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Columbus 3 NE	United States	Record high minimum temperature	15.0 C (59.0 F)	34 of 100 (Routine)
Syracuse	United States	Record high minimum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Galesburg	United States	Record high maximum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Geneseo	United States	Record high maximum temperature	28.3 C (82.9 F)	33 of 100 (Routine)
Golconda River	United States	Record high maximum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Algona	United States	Record high minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Forest City 2 NNE	United States	Record high minimum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Greenfield	United States	Record high minimum temperature	15.6 C (60.1 F)	33 of 100 (Routine)
Hampton	United States	Record high minimum temperature	13.9 C (57.0 F)	33 of 100 (Routine)
Storm Lake	United States	Record high maximum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Oakdale	United States	Record high minimum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Ravenna	United States	Record high minimum temperature	13.9 C (57.0 F)	33 of 100 (Routine)

Counts by Type and Timescale

1,231 records

Records set or tied on 11 April 1977 by type: Highest daily maximum 452, Lowest daily maximum 91, Highest daily minimum 390, Lowest daily minimum 105, Heaviest daily rainfall 163, Heaviest daily snowfall 4, Deepest snow cover 26.

Records on 11 April 1977 by type
Record type	Records
Highest daily maximum	452
Lowest daily maximum	91
Highest daily minimum	390
Lowest daily minimum	105
Heaviest daily rainfall	163
Heaviest daily snowfall	4
Deepest snow cover	26

Records on 11 April 1977 by timescale: all-time 1, monthly 29, daily 1,201.

How Much Records Were Beaten By

1,049 broken records

Margins by which the 1,049 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

11 April 1977

Top 20 records on 11 April 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 April 1977	Kazan, RU	daily rain	32.2 mm (1.3 in)	17.9 mm (0.7 in)	68 years	69 of 100 (Major)
11 April 1977	Worcester, ZA	daily rain	38.0 mm (1.5 in)	23.3 mm (0.9 in)	78 years	63 of 100 (Major)
11 April 1977	Harderug, ZA	daily rain	28.0 mm (1.1 in)	28.0 mm (1.1 in)	48 years	59 of 100 (Notable)
11 April 1977	Izana, ES	daily rain	62.6 mm (2.5 in)	44.6 mm (1.8 in)	46 years	58 of 100 (Notable)
11 April 1977	Acude Mundo Novo, BR	all-time rain	155.4 mm (6.1 in)	45.4 mm (1.8 in)	13 years	57 of 100 (Notable)
11 April 1977	Milgarra, AU	daily rain	73.6 mm (2.9 in)	66.5 mm (2.6 in)	36 years	55 of 100 (Notable)
11 April 1977	Violet Town, AU	daily rain	36.0 mm (1.4 in)	15.2 mm (0.6 in)	85 years	50 of 100 (Notable)
11 April 1977	Pericos, MX	daily rain	29.0 mm (1.1 in)	26.0 mm (1.0 in)	31 years	50 of 100 (Notable)
11 April 1977	Sandheads, IN	daily rain	59.9 mm (2.4 in)	53.7 mm (2.1 in)	14 years	49 of 100 (Notable)
11 April 1977	Manitowoc, US	daily high max	28.3 C (82.9 F)	8.3 C (14.9 F)	77 years	46 of 100 (Notable)
11 April 1977	Sharon Springs, US	daily high min	16.7 C (62.1 F)	6.7 C (12.1 F)	81 years	45 of 100 (Notable)
11 April 1977	Weyerhaeuser 1N, US	monthly high min	19.4 C (66.9 F)	4.4 C (7.9 F)	63 years	44 of 100 (Notable)
11 April 1977	Clyde A, CA	daily snowfall	9.6 cm (3.8 in)	8.3 cm (3.3 in)	27 years	43 of 100 (Notable)
11 April 1977	Normanton Post Office, AU	daily rain	48.0 mm (1.9 in)	15.0 mm (0.6 in)	82 years	42 of 100 (Notable)
11 April 1977	Port Washington, US	monthly high min	16.7 C (62.1 F)	1.1 C (2.0 F)	75 years	42 of 100 (Notable)
11 April 1977	Cambridge Galt Moe, CA	daily low min	-10.0 C (14.0 F)	1.7 C (3.1 F)	96 years	41 of 100 (Notable)
11 April 1977	Middelpos (Pol), ZA	daily rain	27.5 mm (1.1 in)	20.5 mm (0.8 in)	16 years	41 of 100 (Notable)
11 April 1977	Estherville 4E, US	daily high min	17.2 C (63.0 F)	6.6 C (11.9 F)	67 years	41 of 100 (Notable)
11 April 1977	Greeley, US	daily high min	15.6 C (60.1 F)	7.3 C (13.1 F)	64 years	40 of 100 (Notable)
11 April 1977	Racine Wwtp, US	daily high min	18.3 C (64.9 F)	9.4 C (16.9 F)	32 years	40 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 1,231 records.

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

Records on 04-11 in each year
Year	Records
1800	1
1803	1
1808	1
1809	1
1812	3
1818	1
1831	1
1832	1
1834	1
1837	1
1845	1
1854	1
1857	1
1863	2
1865	2
1866	1
1868	1
1869	3
1871	1
1874	1
1876	2
1879	2
1880	2
1881	1
1882	2
1885	1
1886	1
1887	2
1888	4
1889	2
1890	2
1891	2
1892	3
1894	7
1895	5
1896	3
1898	7
1899	11
1900	6
1901	4
1902	6
1903	13
1904	12
1905	20
1906	19
1907	7
1908	12
1909	30
1910	19
1911	19
1912	47
1913	48
1914	38
1915	127
1916	64
1917	62
1918	43
1919	42
1920	73
1921	32
1922	140
1923	89
1924	169
1925	197
1926	198
1927	156
1928	220
1929	214
1930	761
1931	185
1932	497
1933	481
1934	246
1935	261
1936	175
1937	245
1938	289
1939	611
1940	932
1941	579
1942	301
1943	546
1944	626
1945	890
1946	383
1947	478
1948	921
1949	402
1950	322
1951	623
1952	502
1953	594
1954	392
1955	610
1956	420
1957	508
1958	473
1959	582
1960	469
1961	532
1962	384
1963	450
1964	255
1965	763
1966	599
1967	757
1968	663
1969	353
1970	522
1971	495
1972	792
1973	1,479
1974	982
1975	851
1976	478
1977	1,231
1978	854
1979	977
1980	399
1981	1,036
1982	1,132
1983	1,040
1984	623
1985	952
1986	1,062
1987	440
1988	1,162
1989	1,931
1990	1,347
1991	1,287
1992	978
1993	722
1994	952
1995	2,134
1996	1,182
1997	3,077
1998	916
1999	1,318
2000	667
2001	1,865
2002	568
2003	1,156
2004	888
2005	930
2006	666
2007	962
2008	1,373
2009	1,102
2010	623
2011	1,664
2012	806
2013	1,482
2014	633
2015	399
2016	534
2017	489
2018	795
2019	812
2020	625
2021	892
2022	1,179
2023	1,036
2024	782
2025	1,177
2026	604

Download the Data

Data for records on 1977-04-11: 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	1,042
50 to 100	5
100 to 150	1
150 to 200	0
200 to 250	1