Weather Records on 18 March 1977

684 weather records were set or tied worldwide on 18 March 1977. Highest significance: Canfield 1 S, US.

Key Facts for 18 March 1977

On 18 March 1977, 684 weather records were set or tied at long-record stations worldwide.
193 were record highs and 58 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 671 daily.
Canfield 1 S set a daily record precipitation of 35.6 mm (1.4 in) on 18 March 1977.
Across 160 earlier years (1806 to 2026) the same calendar date averaged 476 records.

Record Map

684 stations

684 station records on 18 March 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 March 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Canfield 1 S	United States	Record daily precipitation	35.6 mm (1.4 in)	59 of 100 (Notable)
Put-In-Bay	United States	Record daily precipitation	39.9 mm (1.6 in)	58 of 100 (Notable)
Dorado 2 WNW	Puerto Rico [United States]	Record daily precipitation	81.3 mm (3.2 in)	56 of 100 (Notable)
Oberlin	United States	Record daily precipitation	35.6 mm (1.4 in)	55 of 100 (Notable)
Cleveland	United States	Record daily precipitation	34.5 mm (1.4 in)	55 of 100 (Notable)
Mohonk Lake	United States	Record daily snowfall	33.0 cm (13.0 in)	53 of 100 (Notable)
Riggins	United States	Record daily snowfall	10.2 cm (4.0 in)	52 of 100 (Notable)
Saint Johns	United States	Record daily snowfall	16.5 cm (6.5 in)	52 of 100 (Notable)
Porto Tiradentes	Brazil	Record daily precipitation	112.0 mm (4.4 in)	51 of 100 (Notable)
Grimsby	Canada	Record daily snowfall	17.8 cm (7.0 in)	51 of 100 (Notable)
Plymouth Wwtp	United States	Record daily snowfall	20.3 cm (8.0 in)	51 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record daily precipitation	62.2 mm (2.4 in)	50 of 100 (Notable)
Mqanduli (Tnk)	South Africa	Record daily precipitation	74.0 mm (2.9 in)	50 of 100 (Notable)
Waterloo 2 NW	United States	Record daily precipitation	64.3 mm (2.5 in)	49 of 100 (Notable)
Greenville 2 NE	United States	Record daily precipitation	35.8 mm (1.4 in)	49 of 100 (Notable)
Norwalk Wwtp	United States	Record daily precipitation	34.5 mm (1.4 in)	48 of 100 (Notable)
Osage City	United States	Record daily precipitation	38.6 mm (1.5 in)	47 of 100 (Notable)
Hastings	United States	Record daily snowfall	12.7 cm (5.0 in)	46 of 100 (Notable)
Van Wert 1 S	United States	Record daily precipitation	41.9 mm (1.6 in)	45 of 100 (Notable)
Youngstown-Warren Rgnl AP	United States	Record daily precipitation	39.9 mm (1.6 in)	45 of 100 (Notable)
Santa Rita Do Jacutinga	Brazil	Record daily precipitation	86.0 mm (3.4 in)	43 of 100 (Notable)
Eagle Bay	Canada	Record daily snowfall	19.8 cm (7.8 in)	42 of 100 (Notable)
Mineral Ridge Wtr Wks	United States	Record daily precipitation	38.1 mm (1.5 in)	42 of 100 (Notable)
Schenectady	United States	Record daily snowfall	19.8 cm (7.8 in)	42 of 100 (Notable)
Toronto	Canada	Record daily snowfall	11.9 cm (4.7 in)	41 of 100 (Notable)
Guerrero (Smn)	Mexico	Record high minimum temperature	11.7 C (53.1 F)	41 of 100 (Notable)
San Rafael-Civic Ctr	United States	Record low minimum temperature	-0.6 C (30.9 F)	40 of 100 (Notable)
W Lafayette 6 NW	United States	Record daily precipitation	46.2 mm (1.8 in)	40 of 100 (Notable)
Monroe	United States	Record daily snowfall	15.2 cm (6.0 in)	40 of 100 (Notable)
Jersey City	United States	Record daily precipitation	63.5 mm (2.5 in)	40 of 100 (Notable)
Paulding	United States	Record daily precipitation	40.6 mm (1.6 in)	40 of 100 (Notable)
Coalville	United States	Record daily snowfall	20.3 cm (8.0 in)	40 of 100 (Notable)
Enderby	Canada	Record daily snowfall	6.1 cm (2.4 in)	39 of 100 (Notable)
Claresholm Meadow Creek	Canada	Record daily snowfall	17.8 cm (7.0 in)	39 of 100 (Notable)
Pekisko	Canada	Record daily snowfall	21.6 cm (8.5 in)	39 of 100 (Notable)
Monroeville 1 NW	United States	Record daily precipitation	37.3 mm (1.5 in)	38 of 100 (Notable)
Willis 5 SSW	United States	Record daily snowfall	17.8 cm (7.0 in)	38 of 100 (Notable)
Mansfield 5 W	United States	Record daily precipitation	31.5 mm (1.2 in)	38 of 100 (Notable)
Mosquito Creek Lake	United States	Record daily precipitation	30.7 mm (1.2 in)	38 of 100 (Notable)
Pittsburgh WSO City	United States	Record daily precipitation	29.5 mm (1.2 in)	38 of 100 (Notable)
Port Dalhousie	Canada	Record daily snowfall	10.2 cm (4.0 in)	37 of 100 (Notable)
Defiance	United States	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Marshallville 1 SSW	United States	Record daily precipitation	29.7 mm (1.2 in)	37 of 100 (Notable)
Chilton	United States	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)
Hancock Exp Farm	United States	Record daily snowfall	12.7 cm (5.0 in)	37 of 100 (Notable)
Glens Falls AP	United States	Record daily snowfall	28.4 cm (11.2 in)	37 of 100 (Notable)
Springfield	Canada	Record daily snowfall	25.4 cm (10.0 in)	36 of 100 (Notable)
Ft Wayne Disposal Plt	United States	Record daily precipitation	28.7 mm (1.1 in)	36 of 100 (Notable)
Holland Wtp	United States	Record daily snowfall	11.4 cm (4.5 in)	36 of 100 (Notable)
Marion 2 N	United States	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
Wooster Exp STN	United States	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Sandusky	United States	Record daily precipitation	27.9 mm (1.1 in)	36 of 100 (Notable)
Turners Falls	United States	Record daily snowfall	14.0 cm (5.5 in)	35 of 100 (Notable)
Saint Charles	United States	Record daily snowfall	18.3 cm (7.2 in)	35 of 100 (Notable)
Fremont	United States	Record daily precipitation	27.7 mm (1.1 in)	35 of 100 (Notable)
Ridgway	United States	Record daily snowfall	20.3 cm (8.0 in)	35 of 100 (Notable)
Albany Intl AP	United States	Record daily snowfall	20.3 cm (8.0 in)	35 of 100 (Notable)
Concord ASOS	United States	Record daily snowfall	22.9 cm (9.0 in)	35 of 100 (Notable)
Sao Joao Do Tigre	Brazil	Record daily precipitation	112.1 mm (4.4 in)	34 of 100 (Routine)
Annapolis Royal	Canada	Record daily snowfall	20.3 cm (8.0 in)	34 of 100 (Routine)

Counts by Type and Timescale

684 records

Records set or tied on 18 March 1977 by type: Highest daily maximum 87, Lowest daily maximum 17, Highest daily minimum 106, Lowest daily minimum 41, Heaviest daily rainfall 277, Heaviest daily snowfall 153, Deepest snow cover 3.

Records on 18 March 1977 by type
Record type	Records
Highest daily maximum	87
Lowest daily maximum	17
Highest daily minimum	106
Lowest daily minimum	41
Heaviest daily rainfall	277
Heaviest daily snowfall	153
Deepest snow cover	3

Records on 18 March 1977 by timescale: all-time 0, monthly 13, daily 671.

How Much Records Were Beaten By

569 broken records

Margins by which the 569 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 193.0. Ties are not counted.

Top 20 by Significance

18 March 1977

Top 20 records on 18 March 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 March 1977	Canfield 1 S, US	daily rain	35.6 mm (1.4 in)	20.4 mm (0.8 in)	79 years	59 of 100 (Notable)
18 March 1977	Put-In-Bay, US	daily rain	39.9 mm (1.6 in)	25.4 mm (1.0 in)	47 years	58 of 100 (Notable)
18 March 1977	Dorado 2 WNW, PR	daily rain	81.3 mm (3.2 in)	73.2 mm (2.9 in)	43 years	56 of 100 (Notable)
18 March 1977	Oberlin, US	daily rain	35.6 mm (1.4 in)	19.9 mm (0.8 in)	68 years	55 of 100 (Notable)
18 March 1977	Cleveland, US	daily rain	34.5 mm (1.4 in)	29.2 mm (1.1 in)	36 years	55 of 100 (Notable)
18 March 1977	Mohonk Lake, US	daily snowfall	33.0 cm (13.0 in)	17.8 cm (7.0 in)	72 years	53 of 100 (Notable)
18 March 1977	Riggins, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	80 years	52 of 100 (Notable)
18 March 1977	Saint Johns, US	daily snowfall	16.5 cm (6.5 in)	8.9 cm (3.5 in)	77 years	52 of 100 (Notable)
18 March 1977	Porto Tiradentes, BR	daily rain	112.0 mm (4.4 in)	59.6 mm (2.3 in)	30 years	51 of 100 (Notable)
18 March 1977	Grimsby, CA	daily snowfall	17.8 cm (7.0 in)	12.7 cm (5.0 in)	66 years	51 of 100 (Notable)
18 March 1977	Plymouth Wwtp, US	daily snowfall	20.3 cm (8.0 in)	16.5 cm (6.5 in)	60 years	51 of 100 (Notable)
18 March 1977	Manati 2 E, PR	daily rain	62.2 mm (2.4 in)	39.6 mm (1.6 in)	63 years	50 of 100 (Notable)
18 March 1977	Mqanduli (Tnk), ZA	daily rain	74.0 mm (2.9 in)	32.9 mm (1.3 in)	40 years	50 of 100 (Notable)
18 March 1977	Waterloo 2 NW, US	monthly rain	64.3 mm (2.5 in)	21.1 mm (0.8 in)	31 years	49 of 100 (Notable)
18 March 1977	Greenville 2 NE, US	daily rain	35.8 mm (1.4 in)	16.5 mm (0.6 in)	68 years	49 of 100 (Notable)
18 March 1977	Norwalk Wwtp, US	daily rain	34.5 mm (1.4 in)	13.9 mm (0.5 in)	77 years	48 of 100 (Notable)
18 March 1977	Osage City, US	daily rain	38.6 mm (1.5 in)	24.4 mm (1.0 in)	52 years	47 of 100 (Notable)
18 March 1977	Hastings, US	daily snowfall	12.7 cm (5.0 in)	7.6 cm (3.0 in)	77 years	46 of 100 (Notable)
18 March 1977	Van Wert 1 S, US	daily rain	41.9 mm (1.6 in)	12.7 mm (0.5 in)	77 years	45 of 100 (Notable)
18 March 1977	Youngstown-Warren Rgnl AP, US	daily rain	39.9 mm (1.6 in)	30.0 mm (1.2 in)	4 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

1806 to 1977

Records set or tied on this calendar date in each year from 1806 to 1977. 1977 had 684 records.

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

Records on 03-18 in each year
Year	Records
1806	1
1807	1
1808	1
1810	1
1814	1
1831	1
1836	1
1839	1
1845	1
1849	1
1850	5
1853	2
1859	1
1863	1
1865	2
1867	1
1868	3
1876	1
1881	1
1882	3
1884	3
1885	1
1887	1
1888	4
1890	3
1891	3
1892	2
1893	1
1894	1
1895	2
1896	10
1897	14
1898	5
1899	8
1900	14
1901	2
1902	9
1903	22
1904	9
1905	19
1906	13
1907	11
1908	8
1909	9
1910	12
1911	17
1912	16
1913	24
1914	32
1915	30
1916	73
1917	45
1918	32
1919	25
1920	39
1921	66
1922	39
1923	262
1924	96
1925	145
1926	251
1927	376
1928	301
1929	106
1930	261
1931	167
1932	212
1933	244
1934	375
1935	87
1936	699
1937	296
1938	304
1939	750
1940	444
1941	954
1942	382
1943	603
1944	321
1945	751
1946	492
1947	328
1948	296
1949	292
1950	1,042
1951	582
1952	474
1953	218
1954	355
1955	469
1956	363
1957	374
1958	347
1959	392
1960	585
1961	579
1962	284
1963	665
1964	348
1965	1,584
1966	540
1967	1,396
1968	915
1969	601
1970	533
1971	405
1972	1,028
1973	716
1974	694
1975	614
1976	538
1977	684
1978	1,003
1979	894
1980	588
1981	570
1982	1,284
1983	1,225
1984	446
1985	731
1986	626
1987	933
1988	1,001
1989	1,147
1990	1,478
1991	706
1992	789
1993	1,683
1994	960
1995	833
1996	518
1997	1,024
1998	1,144
1999	1,051
2000	524
2001	841
2002	1,562
2003	1,425
2004	1,232
2005	1,178
2006	551
2007	1,330
2008	1,066
2009	776
2010	678
2011	993
2012	3,348
2013	783
2014	701
2015	943
2016	675
2017	1,183
2018	921
2019	666
2020	672
2021	562
2022	476
2023	890
2024	843
2025	728
2026	2,870

Download the Data

Data for records on 1977-03-18: 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 25	469
25 to 50	41
50 to 75	26
75 to 100	13
100 to 125	7
125 to 150	5
150 to 175	5
175 to 200	3