Weather Records on 21 January 1977

549 weather records were set or tied worldwide on 21 January 1977. Highest significance: Simplicio Mendes, BR.

Key Facts for 21 January 1977

On 21 January 1977, 549 weather records were set or tied at long-record stations worldwide.
73 were record highs and 163 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 21 monthly and 522 daily.
Simplicio Mendes set a daily record precipitation of 86.0 mm (3.4 in) on 21 January 1977.
Across 163 earlier years (1793 to 2026) the same calendar date averaged 467 records.

Record Map

549 stations

549 station records on 21 January 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 January 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Simplicio Mendes	Brazil	Record daily precipitation	86.0 mm (3.4 in)	63 of 100 (Major)
Franklin	United States	Record snow depth	66.0 cm (26.0 in)	59 of 100 (Notable)
Anthony Lagoon	Australia	Record daily precipitation	196.0 mm (7.7 in)	58 of 100 (Notable)
Du Quoin 4 SE	United States	Record snow depth	27.9 cm (11.0 in)	56 of 100 (Notable)
Fajardo	Puerto Rico [United States]	Record daily precipitation	157.5 mm (6.2 in)	55 of 100 (Notable)
Findlay Wpcc	United States	Record snow depth	35.6 cm (14.0 in)	53 of 100 (Notable)
New Castle 1 N	United States	Record snow depth	35.6 cm (14.0 in)	52 of 100 (Notable)
San Juan City	Puerto Rico [United States]	Record daily precipitation	69.3 mm (2.7 in)	51 of 100 (Notable)
Washington 1 W	United States	Record snow depth	30.5 cm (12.0 in)	51 of 100 (Notable)
Carrollton Lock 1	United States	Record snow depth	25.4 cm (10.0 in)	51 of 100 (Notable)
Conceicao da Barra	Brazil	Record daily precipitation	98.0 mm (3.9 in)	50 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record daily precipitation	83.8 mm (3.3 in)	49 of 100 (Notable)
Itaju	Brazil	Record daily precipitation	131.7 mm (5.2 in)	48 of 100 (Notable)
Granja	Brazil	Record daily precipitation	87.0 mm (3.4 in)	48 of 100 (Notable)
Oeiras	Brazil	Record daily precipitation	80.7 mm (3.2 in)	48 of 100 (Notable)
Arecibo 3 ESE	Puerto Rico [United States]	Record daily precipitation	119.4 mm (4.7 in)	48 of 100 (Notable)
Santo Hipolito	Brazil	Record daily precipitation	119.0 mm (4.7 in)	45 of 100 (Notable)
Arhangelsk	Russia	Record low maximum temperature	-32.5 C (-26.5 F)	45 of 100 (Notable)
Zara Station	Australia	Record daily precipitation	55.0 mm (2.2 in)	44 of 100 (Notable)
Parambu	Brazil	Record daily precipitation	137.3 mm (5.4 in)	44 of 100 (Notable)
Salgadinho	Brazil	Record daily precipitation	110.6 mm (4.4 in)	44 of 100 (Notable)
Crawfordsville Pwr Plt	United States	Record snow depth	27.9 cm (11.0 in)	44 of 100 (Notable)
Montpelier	United States	Record snow depth	25.4 cm (10.0 in)	43 of 100 (Notable)
Jaicos	Brazil	Record daily precipitation	78.4 mm (3.1 in)	42 of 100 (Notable)
Araci	Brazil	Record daily precipitation	50.0 mm (2.0 in)	42 of 100 (Notable)
Olney 2S	United States	Record snow depth	33.0 cm (13.0 in)	41 of 100 (Notable)
Lancaster 2 NW	United States	Record snow depth	30.5 cm (12.0 in)	41 of 100 (Notable)
Murphy 4ESE	United States	Record daily snowfall	8.9 cm (3.5 in)	40 of 100 (Notable)
Ford City 4 S Dam	United States	Record snow depth	35.6 cm (14.0 in)	39 of 100 (Notable)
Oolitic Purdue Ex Fm	United States	Record snow depth	25.4 cm (10.0 in)	38 of 100 (Notable)
Franklin	United States	Record snow depth	12.7 cm (5.0 in)	38 of 100 (Notable)
Searchlight	United States	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Warren 3 S	United States	Record snow depth	30.5 cm (12.0 in)	38 of 100 (Notable)
Flora Downs	Australia	Record daily precipitation	50.4 mm (2.0 in)	37 of 100 (Notable)
Mt Carmel 4 NW	United States	Record snow depth	25.4 cm (10.0 in)	37 of 100 (Notable)
Skaneateles	United States	Record daily snowfall	20.3 cm (8.0 in)	37 of 100 (Notable)
Dorado 2 WNW	Puerto Rico [United States]	Record daily precipitation	63.5 mm (2.5 in)	36 of 100 (Notable)
Springfield	United States	Record snow depth	20.3 cm (8.0 in)	36 of 100 (Notable)
Buffalo	United States	Record snow depth	83.8 cm (33.0 in)	36 of 100 (Notable)
Henderson 8 SSW	United States	Record snow depth	12.7 cm (5.0 in)	35 of 100 (Notable)
Defiance	United States	Record snow depth	20.3 cm (8.0 in)	35 of 100 (Notable)
Hughenden Post Office	Australia	Record daily precipitation	31.0 mm (1.2 in)	34 of 100 (Routine)
Cramond, Albert Fall	South Africa	Record daily precipitation	67.3 mm (2.6 in)	34 of 100 (Routine)
Franklinville	United States	Record snow depth	73.7 cm (29.0 in)	34 of 100 (Routine)
Miamisburg	United States	Record snow depth	22.9 cm (9.0 in)	34 of 100 (Routine)
Sacaton	United States	Record high minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Flora 5 NW	United States	Record snow depth	22.9 cm (9.0 in)	33 of 100 (Routine)
Wytheville	United States	Record low maximum temperature	-5.0 C (23.0 F)	33 of 100 (Routine)
Porto	Brazil	Record daily precipitation	131.8 mm (5.2 in)	32 of 100 (Routine)
Iapi	Brazil	Record daily precipitation	125.0 mm (4.9 in)	32 of 100 (Routine)
Esplanada	Brazil	Record daily precipitation	50.2 mm (2.0 in)	32 of 100 (Routine)
Dayton Mcd	United States	Record snow depth	35.6 cm (14.0 in)	32 of 100 (Routine)
Rushville	United States	Record snow depth	25.4 cm (10.0 in)	31 of 100 (Routine)
Oswego	United States	Record snow depth	101.6 cm (40.0 in)	31 of 100 (Routine)
Philo 3 SW	United States	Record snow depth	38.1 cm (15.0 in)	31 of 100 (Routine)
Ephrata	United States	Record snow depth	25.4 cm (10.0 in)	31 of 100 (Routine)
Madera	Mexico	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
Goedehoop	South Africa	Record daily precipitation	62.5 mm (2.5 in)	30 of 100 (Routine)
Farmland 5 NNW	United States	Record snow depth	17.8 cm (7.0 in)	30 of 100 (Routine)
Lockport 2SE	United States	Record snow depth	124.5 cm (49.0 in)	30 of 100 (Routine)

Counts by Type and Timescale

549 records

Records set or tied on 21 January 1977 by type: Highest daily maximum 18, Lowest daily maximum 73, Highest daily minimum 55, Lowest daily minimum 90, Heaviest daily rainfall 153, Heaviest daily snowfall 19, Deepest snow cover 141.

Records on 21 January 1977 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	73
Highest daily minimum	55
Lowest daily minimum	90
Heaviest daily rainfall	153
Heaviest daily snowfall	19
Deepest snow cover	141

Records on 21 January 1977 by timescale: all-time 6, monthly 21, daily 522.

How Much Records Were Beaten By

427 broken records

Margins by which the 427 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 406.0. Ties are not counted.

Top 20 by Significance

21 January 1977

Top 20 records on 21 January 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 January 1977	Simplicio Mendes, BR	daily rain	86.0 mm (3.4 in)	57.7 mm (2.3 in)	57 years	63 of 100 (Major)
21 January 1977	Franklin, US	daily snow depth	66.0 cm (26.0 in)	35.5 cm (14.0 in)	57 years	59 of 100 (Notable)
21 January 1977	Anthony Lagoon, AU	daily rain	196.0 mm (7.7 in)	139.6 mm (5.5 in)	38 years	58 of 100 (Notable)
21 January 1977	Du Quoin 4 SE, US	daily snow depth	27.9 cm (11.0 in)	27.9 cm (11.0 in)	76 years	56 of 100 (Notable)
21 January 1977	Fajardo, PR	monthly rain	157.5 mm (6.2 in)	79.0 mm (3.1 in)	6 years	55 of 100 (Notable)
21 January 1977	Findlay Wpcc, US	daily snow depth	35.6 cm (14.0 in)	25.4 cm (10.0 in)	21 years	53 of 100 (Notable)
21 January 1977	New Castle 1 N, US	daily snow depth	35.6 cm (14.0 in)	20.4 cm (8.0 in)	67 years	52 of 100 (Notable)
21 January 1977	San Juan City, PR	daily rain	69.3 mm (2.7 in)	51.3 mm (2.0 in)	18 years	51 of 100 (Notable)
21 January 1977	Washington 1 W, US	daily snow depth	30.5 cm (12.0 in)	20.3 cm (8.0 in)	62 years	51 of 100 (Notable)
21 January 1977	Carrollton Lock 1, US	daily snow depth	25.4 cm (10.0 in)	22.9 cm (9.0 in)	16 years	51 of 100 (Notable)
21 January 1977	Conceicao da Barra, BR	daily rain	98.0 mm (3.9 in)	65.9 mm (2.6 in)	36 years	50 of 100 (Notable)
21 January 1977	Manati 2 E, PR	daily rain	83.8 mm (3.3 in)	55.6 mm (2.2 in)	9 years	49 of 100 (Notable)
21 January 1977	Itaju, BR	daily rain	131.7 mm (5.2 in)	71.2 mm (2.8 in)	17 years	48 of 100 (Notable)
21 January 1977	Granja, BR	monthly rain	87.0 mm (3.4 in)	21.0 mm (0.8 in)	52 years	48 of 100 (Notable)
21 January 1977	Oeiras, BR	daily rain	80.7 mm (3.2 in)	45.3 mm (1.8 in)	61 years	48 of 100 (Notable)
21 January 1977	Arecibo 3 ESE, PR	daily rain	119.4 mm (4.7 in)	95.3 mm (3.8 in)	16 years	48 of 100 (Notable)
21 January 1977	Santo Hipolito, BR	daily rain	119.0 mm (4.7 in)	80.0 mm (3.1 in)	9 years	45 of 100 (Notable)
21 January 1977	Arhangelsk, RU	daily low max	-32.5 C (-26.5 F)	8.0 C (14.4 F)	86 years	45 of 100 (Notable)
21 January 1977	Zara Station, AU	daily rain	55.0 mm (2.2 in)	31.1 mm (1.2 in)	62 years	44 of 100 (Notable)
21 January 1977	Parambu, BR	daily rain	137.3 mm (5.4 in)	82.8 mm (3.3 in)	2 years	44 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 549 records.

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

Records on 01-21 in each year
Year	Records
1793	1
1795	2
1796	1
1798	1
1800	2
1803	1
1804	2
1829	1
1838	3
1840	2
1845	2
1846	1
1850	2
1864	2
1866	4
1867	1
1869	1
1871	1
1873	2
1876	1
1878	4
1880	3
1881	4
1884	1
1885	1
1886	1
1888	3
1890	2
1891	3
1892	2
1893	1
1894	3
1895	2
1896	2
1897	3
1898	3
1899	15
1900	5
1901	4
1902	8
1903	18
1904	30
1905	3
1906	53
1907	10
1908	11
1909	25
1910	11
1911	8
1912	7
1913	23
1914	37
1915	47
1916	38
1917	83
1918	49
1919	14
1920	75
1921	54
1922	35
1923	62
1924	535
1925	103
1926	157
1927	447
1928	206
1929	132
1930	616
1931	112
1932	167
1933	572
1934	255
1935	771
1936	314
1937	852
1938	250
1939	305
1940	562
1941	205
1942	522
1943	1,168
1944	324
1945	290
1946	339
1947	205
1948	387
1949	452
1950	643
1951	367
1952	436
1953	325
1954	1,094
1955	399
1956	653
1957	527
1958	506
1959	936
1960	319
1961	746
1962	741
1963	761
1964	771
1965	251
1966	636
1967	511
1968	1,179
1969	927
1970	1,770
1971	672
1972	598
1973	573
1974	992
1975	496
1976	860
1977	549
1978	1,301
1979	1,675
1980	425
1981	972
1982	1,339
1983	1,179
1984	2,132
1985	2,457
1986	883
1987	934
1988	771
1989	511
1990	927
1991	559
1992	447
1993	1,763
1994	1,195
1995	1,276
1996	528
1997	950
1998	606
1999	1,387
2000	686
2001	736
2002	796
2003	690
2004	535
2005	1,111
2006	1,116
2007	1,955
2008	1,061
2009	788
2010	1,166
2011	836
2012	1,148
2013	455
2014	522
2015	426
2016	580
2017	1,248
2018	664
2019	526
2020	894
2021	626
2022	430
2023	517
2024	1,015
2025	1,386
2026	201

Download the Data

Data for records on 1977-01-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Histogram of margins by which records were beaten on 21 January 1977
Margin	Records
0 to 100	387
100 to 200	28
200 to 300	9
300 to 400	2
400 to 500	1