Weather Records on 12 April 1977

1,069 weather records were set or tied worldwide on 12 April 1977. Highest significance: Ischim Amsg, RU.

Key Facts for 12 April 1977

On 12 April 1977, 1,069 weather records were set or tied at long-record stations worldwide.
712 were record highs and 103 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 1,052 daily.
Ischim Amsg set a monthly record daily precipitation of 40.9 mm (1.6 in) on 12 April 1977.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 498 records.

Record Map

1,069 stations

1,069 station records on 12 April 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 April 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ischim Amsg	Russia	Record daily precipitation	40.9 mm (1.6 in)	58 of 100 (Notable)
Tsumeb - Pol	Namibia	Record daily precipitation	34.0 mm (1.3 in)	56 of 100 (Notable)
Zugspitze	Germany	Record daily precipitation	50.7 mm (2.0 in)	52 of 100 (Notable)
Tanana AP	United States	Record daily snowfall	8.6 cm (3.4 in)	52 of 100 (Notable)
Huntingdon	Canada	Record high minimum temperature	12.2 C (54.0 F)	49 of 100 (Notable)
Mornington	Australia	Record daily precipitation	40.0 mm (1.6 in)	48 of 100 (Notable)
Weltevreden	South Africa	Record daily precipitation	40.4 mm (1.6 in)	47 of 100 (Notable)
Alert Bay	Canada	Record daily precipitation	37.2 mm (1.5 in)	45 of 100 (Notable)
Bladgrond	South Africa	Record daily precipitation	32.5 mm (1.3 in)	45 of 100 (Notable)
Bolivar	United States	Record high minimum temperature	12.8 C (55.0 F)	44 of 100 (Notable)
McGregor (Pol)	South Africa	Record daily precipitation	31.0 mm (1.2 in)	43 of 100 (Notable)
Cape May 2 NW	United States	Record high maximum temperature	28.9 C (84.0 F)	43 of 100 (Notable)
Hot Springs	United States	Record daily precipitation	29.7 mm (1.2 in)	43 of 100 (Notable)
St Andrews	Canada	Record low minimum temperature	-9.4 C (15.1 F)	42 of 100 (Notable)
Port Dover	Canada	Record high maximum temperature	24.0 C (75.2 F)	41 of 100 (Notable)
Robertson	South Africa	Record daily precipitation	34.5 mm (1.4 in)	41 of 100 (Notable)
Oudtshoorn	South Africa	Record daily precipitation	31.2 mm (1.2 in)	41 of 100 (Notable)
Slutsk	Belarus	Record daily precipitation	37.7 mm (1.5 in)	40 of 100 (Notable)
Estevan Point	Canada	Record daily precipitation	65.4 mm (2.6 in)	40 of 100 (Notable)
Middletown 2 NW	United States	Record high maximum temperature	29.4 C (84.9 F)	40 of 100 (Notable)
Zhitckovichi	Belarus	Record daily precipitation	40.7 mm (1.6 in)	39 of 100 (Notable)
Woodstock	Canada	Record high maximum temperature	26.1 C (79.0 F)	39 of 100 (Notable)
Ciudad Victoria	Mexico	Record daily precipitation	69.5 mm (2.7 in)	38 of 100 (Notable)
Saaifontein	South Africa	Record daily precipitation	56.5 mm (2.2 in)	38 of 100 (Notable)
Deeral	Australia	Record daily precipitation	202.0 mm (8.0 in)	37 of 100 (Notable)
Korong Vale (Post Office)	Australia	Record daily precipitation	30.4 mm (1.2 in)	37 of 100 (Notable)
Meredith	Australia	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Laurel 3 W	United States	Record high maximum temperature	30.6 C (87.1 F)	37 of 100 (Notable)
Oelrichs	United States	Record daily precipitation	30.5 mm (1.2 in)	37 of 100 (Notable)
Kenai AP	United States	Record low maximum temperature	-5.6 C (21.9 F)	37 of 100 (Notable)
Sonnblick	Austria	Record low maximum temperature	-15.8 C (3.6 F)	36 of 100 (Notable)
Durham	Canada	Record high maximum temperature	22.8 C (73.0 F)	36 of 100 (Notable)
Grimsby	Canada	Record high minimum temperature	16.5 C (61.7 F)	36 of 100 (Notable)
Rockville 1 NE	United States	Record high maximum temperature	32.2 C (90.0 F)	36 of 100 (Notable)
Bolivar	United States	Record high maximum temperature	27.2 C (81.0 F)	36 of 100 (Notable)
Toledo Blade	United States	Record high maximum temperature	30.0 C (86.0 F)	36 of 100 (Notable)
Monterey	United States	Record high minimum temperature	12.2 C (54.0 F)	36 of 100 (Notable)
Gannakraal	South Africa	Record daily precipitation	34.0 mm (1.3 in)	35 of 100 (Notable)
Marengo	United States	Record high minimum temperature	12.2 C (54.0 F)	35 of 100 (Notable)
Pontiac Wwtp	United States	Record high maximum temperature	28.3 C (82.9 F)	35 of 100 (Notable)
Roxboro 7 ESE	United States	Record high maximum temperature	31.1 C (88.0 F)	35 of 100 (Notable)
Oberlin	United States	Record high minimum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Upper Sandusky	United States	Record high minimum temperature	13.9 C (57.0 F)	35 of 100 (Notable)
Stevens Pt	United States	Record high maximum temperature	28.3 C (82.9 F)	35 of 100 (Notable)
Matanuska Exp Farm	United States	Record low maximum temperature	-2.2 C (28.0 F)	35 of 100 (Notable)
Bunda Bunda	Australia	Record daily precipitation	36.8 mm (1.4 in)	34 of 100 (Routine)
Macknade Sugar Mill	Australia	Record daily precipitation	102.0 mm (4.0 in)	34 of 100 (Routine)
Koumala Hatfields Road	Australia	Record daily precipitation	52.4 mm (2.1 in)	34 of 100 (Routine)
Lucknow	Canada	Record high maximum temperature	25.6 C (78.1 F)	34 of 100 (Routine)
Elberton 2 N	United States	Record high maximum temperature	31.1 C (88.0 F)	34 of 100 (Routine)
Grayling	United States	Record high maximum temperature	27.2 C (81.0 F)	34 of 100 (Routine)
Beatrice	United States	Record high minimum temperature	16.1 C (61.0 F)	34 of 100 (Routine)
Alfred	United States	Record high minimum temperature	14.4 C (57.9 F)	34 of 100 (Routine)
Portage Wwtp	United States	Record high maximum temperature	28.3 C (82.9 F)	34 of 100 (Routine)
Green Bay	United States	Record high maximum temperature	26.7 C (80.1 F)	34 of 100 (Routine)
Matjiesrivier (Skl)	South Africa	Record daily precipitation	48.5 mm (1.9 in)	33 of 100 (Routine)
Frederick Police Brks	United States	Record high minimum temperature	16.1 C (61.0 F)	33 of 100 (Routine)
Alma	United States	Record high maximum temperature	27.8 C (82.0 F)	33 of 100 (Routine)
Princeton	United States	Record high minimum temperature	12.8 C (55.0 F)	33 of 100 (Routine)
Grafton	United States	Record high maximum temperature	22.2 C (72.0 F)	33 of 100 (Routine)

Counts by Type and Timescale

1,069 records

Records set or tied on 12 April 1977 by type: Highest daily maximum 472, Lowest daily maximum 59, Highest daily minimum 240, Lowest daily minimum 44, Heaviest daily rainfall 234, Heaviest daily snowfall 7, Deepest snow cover 13.

Records on 12 April 1977 by type
Record type	Records
Highest daily maximum	472
Lowest daily maximum	59
Highest daily minimum	240
Lowest daily minimum	44
Heaviest daily rainfall	234
Heaviest daily snowfall	7
Deepest snow cover	13

Records on 12 April 1977 by timescale: all-time 0, monthly 17, daily 1,052.

How Much Records Were Beaten By

885 broken records

Margins by which the 885 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

12 April 1977

Top 20 records on 12 April 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 April 1977	Ischim Amsg, RU	monthly rain	40.9 mm (1.6 in)	10.7 mm (0.4 in)	27 years	58 of 100 (Notable)
12 April 1977	Tsumeb - Pol, NA	daily rain	34.0 mm (1.3 in)	28.4 mm (1.1 in)	34 years	56 of 100 (Notable)
12 April 1977	Zugspitze, DE	daily rain	50.7 mm (2.0 in)	19.8 mm (0.8 in)	76 years	52 of 100 (Notable)
12 April 1977	Tanana AP, US	daily snowfall	8.6 cm (3.4 in)	7.6 cm (3.0 in)	31 years	52 of 100 (Notable)
12 April 1977	Huntingdon, CA	daily high min	12.2 C (54.0 F)	5.0 C (9.0 F)	98 years	49 of 100 (Notable)
12 April 1977	Mornington, AU	daily rain	40.0 mm (1.6 in)	10.5 mm (0.4 in)	85 years	48 of 100 (Notable)
12 April 1977	Weltevreden, ZA	monthly rain	40.4 mm (1.6 in)	15.9 mm (0.6 in)	22 years	47 of 100 (Notable)
12 April 1977	Alert Bay, CA	daily rain	37.2 mm (1.5 in)	21.7 mm (0.9 in)	16 years	45 of 100 (Notable)
12 April 1977	Bladgrond, ZA	daily rain	32.5 mm (1.3 in)	30.5 mm (1.2 in)	43 years	45 of 100 (Notable)
12 April 1977	Bolivar, US	daily high min	12.8 C (55.0 F)	7.2 C (13.0 F)	77 years	44 of 100 (Notable)
12 April 1977	McGregor (Pol), ZA	daily rain	31.0 mm (1.2 in)	18.0 mm (0.7 in)	36 years	43 of 100 (Notable)
12 April 1977	Cape May 2 NW, US	daily high max	28.9 C (84.0 F)	7.8 C (14.0 F)	55 years	43 of 100 (Notable)
12 April 1977	Hot Springs, US	daily rain	29.7 mm (1.2 in)	17.0 mm (0.7 in)	50 years	43 of 100 (Notable)
12 April 1977	St Andrews, CA	daily low min	-9.4 C (15.1 F)	1.1 C (2.0 F)	96 years	42 of 100 (Notable)
12 April 1977	Port Dover, CA	daily high max	24.0 C (75.2 F)	2.9 C (5.2 F)	86 years	41 of 100 (Notable)
12 April 1977	Robertson, ZA	daily rain	34.5 mm (1.4 in)	12.7 mm (0.5 in)	54 years	41 of 100 (Notable)
12 April 1977	Oudtshoorn, ZA	daily rain	31.2 mm (1.2 in)	15.2 mm (0.6 in)	24 years	41 of 100 (Notable)
12 April 1977	Slutsk, BY	monthly rain	37.7 mm (1.5 in)	7.2 mm (0.28 in)	25 years	40 of 100 (Notable)
12 April 1977	Estevan Point, CA	daily rain	65.4 mm (2.6 in)	28.6 mm (1.1 in)	46 years	40 of 100 (Notable)
12 April 1977	Middletown 2 NW, US	daily high max	29.4 C (84.9 F)	5.0 C (9.0 F)	80 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

1793 to 1977

Records set or tied on this calendar date in each year from 1793 to 1977. 1977 had 1,069 records.

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

Records on 04-12 in each year
Year	Records
1793	1
1805	1
1810	1
1812	2
1817	2
1826	1
1831	1
1845	1
1850	1
1854	1
1865	2
1866	2
1868	4
1869	5
1871	1
1873	1
1874	5
1876	2
1877	1
1878	1
1879	4
1881	1
1882	1
1885	2
1889	4
1890	10
1891	3
1892	2
1893	4
1894	1
1895	1
1896	1
1897	4
1898	4
1899	5
1900	6
1901	5
1902	3
1903	10
1904	11
1905	19
1906	24
1907	5
1908	10
1909	16
1910	15
1911	26
1912	48
1913	88
1914	41
1915	125
1916	37
1917	33
1918	40
1919	39
1920	148
1921	34
1922	48
1923	134
1924	69
1925	178
1926	347
1927	179
1928	145
1929	141
1930	638
1931	267
1932	253
1933	551
1934	531
1935	171
1936	277
1937	236
1938	175
1939	1,174
1940	1,407
1941	869
1942	191
1943	614
1944	423
1945	884
1946	347
1947	733
1948	1,496
1949	358
1950	638
1951	1,102
1952	455
1953	707
1954	424
1955	611
1956	382
1957	910
1958	542
1959	513
1960	314
1961	551
1962	510
1963	518
1964	363
1965	659
1966	520
1967	682
1968	717
1969	352
1970	568
1971	587
1972	1,316
1973	903
1974	822
1975	704
1976	1,076
1977	1,069
1978	533
1979	1,096
1980	611
1981	1,068
1982	852
1983	877
1984	671
1985	734
1986	1,350
1987	606
1988	1,369
1989	1,838
1990	946
1991	1,484
1992	1,000
1993	586
1994	1,375
1995	1,173
1996	994
1997	3,094
1998	1,409
1999	873
2000	784
2001	1,369
2002	600
2003	1,079
2004	964
2005	536
2006	796
2007	1,144
2008	1,015
2009	811
2010	935
2011	1,026
2012	666
2013	1,039
2014	597
2015	504
2016	595
2017	519
2018	868
2019	685
2020	1,150
2021	710
2022	1,862
2023	1,262
2024	1,086
2025	1,281
2026	622

Download the Data

Data for records on 1977-04-12: 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	877
50 to 100	5
100 to 150	2
150 to 200	0
200 to 250	1