Weather Records on 21 March 1980

775 weather records were set or tied worldwide on 21 March 1980. Highest significance: Port Hope, CA.

Key Facts for 21 March 1980

On 21 March 1980, 775 weather records were set or tied at long-record stations worldwide.
125 were record highs and 112 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 25 monthly and 749 daily.
Port Hope set a monthly record daily precipitation of 52.4 mm (2.1 in) on 21 March 1980.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 481 records.

Record Map

775 stations

775 station records on 21 March 1980 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 March 1980: highest significance records shown on the map
Station	Country	Type	Value	Significance
Port Hope	Canada	Record daily precipitation	52.4 mm (2.1 in)	68 of 100 (Major)
Murphy 4ESE	United States	Record daily precipitation	88.9 mm (3.5 in)	65 of 100 (Major)
Black Rock	United States	Record daily snowfall	22.9 cm (9.0 in)	62 of 100 (Major)
Trenton Ont Hydro	Canada	Record daily precipitation	52.3 mm (2.1 in)	60 of 100 (Major)
Kemptville	Canada	Record daily precipitation	44.0 mm (1.7 in)	59 of 100 (Notable)
Campbellford	Canada	Record daily precipitation	53.8 mm (2.1 in)	59 of 100 (Notable)
North Bay A	Canada	Record daily precipitation	43.8 mm (1.7 in)	55 of 100 (Notable)
Murfreesboro 5 N	United States	Record daily precipitation	82.6 mm (3.3 in)	54 of 100 (Notable)
P-Ranch South Place	United States	Record daily snowfall	7.1 cm (2.8 in)	53 of 100 (Notable)
Richland	United States	Record daily precipitation	25.7 mm (1.0 in)	53 of 100 (Notable)
Kurnool	India	Record daily precipitation	32.0 mm (1.3 in)	52 of 100 (Notable)
Snowville	United States	Record daily snowfall	10.2 cm (4.0 in)	52 of 100 (Notable)
Cookeville	United States	Record daily precipitation	93.5 mm (3.7 in)	51 of 100 (Notable)
Crossville Ed & Rsch STN	United States	Record daily precipitation	104.9 mm (4.1 in)	51 of 100 (Notable)
London Int'l Airport	Canada	Record daily precipitation	39.9 mm (1.6 in)	49 of 100 (Notable)
Amos	Canada	Record daily precipitation	49.0 mm (1.9 in)	49 of 100 (Notable)
Vosburg	South Africa	Record daily precipitation	61.5 mm (2.4 in)	49 of 100 (Notable)
Marshall	United States	Record daily precipitation	40.1 mm (1.6 in)	49 of 100 (Notable)
North Bay	Canada	Record daily precipitation	31.0 mm (1.2 in)	48 of 100 (Notable)
Keimoes (Pol)	South Africa	Record daily precipitation	64.0 mm (2.5 in)	48 of 100 (Notable)
Monterey	United States	Record daily precipitation	91.4 mm (3.6 in)	48 of 100 (Notable)
Hopewell	United States	Record daily precipitation	50.0 mm (2.0 in)	48 of 100 (Notable)
Notre Dame du Laus	Canada	Record daily precipitation	68.9 mm (2.7 in)	47 of 100 (Notable)
Andrews	United States	Record daily precipitation	106.9 mm (4.2 in)	46 of 100 (Notable)
Lima Wwtp	United States	Record daily precipitation	37.3 mm (1.5 in)	45 of 100 (Notable)
Newport 1 NW	United States	Record daily precipitation	54.6 mm (2.1 in)	45 of 100 (Notable)
Ottawa Cda	Canada	Record daily precipitation	43.0 mm (1.7 in)	44 of 100 (Notable)
Belleville	Canada	Record daily precipitation	53.2 mm (2.1 in)	44 of 100 (Notable)
N Wilkesboro	United States	Record daily precipitation	51.8 mm (2.0 in)	44 of 100 (Notable)
Welland	Canada	Record daily precipitation	34.4 mm (1.4 in)	43 of 100 (Notable)
Orono	Canada	Record daily precipitation	46.6 mm (1.8 in)	43 of 100 (Notable)
Fremont	United States	Record daily precipitation	35.1 mm (1.4 in)	43 of 100 (Notable)
Midland Water Pollution Contro	Canada	Record daily precipitation	26.0 mm (1.0 in)	42 of 100 (Notable)
Swannanoa 2 E	United States	Record daily precipitation	61.2 mm (2.4 in)	42 of 100 (Notable)
Bathurst Gaol	Australia	Record high maximum temperature	32.5 C (90.5 F)	41 of 100 (Notable)
Minden	Canada	Record daily precipitation	51.0 mm (2.0 in)	41 of 100 (Notable)
Otter Lake	Canada	Record daily precipitation	50.0 mm (2.0 in)	41 of 100 (Notable)
Beaverdale 1 E	United States	Record daily precipitation	94.5 mm (3.7 in)	41 of 100 (Notable)
Hiram	United States	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Mitchell 2 NW	United States	Record daily snowfall	5.1 cm (2.0 in)	41 of 100 (Notable)
Copperhill	United States	Record daily precipitation	98.0 mm (3.9 in)	41 of 100 (Notable)
Rocky Mt	United States	Record daily precipitation	45.7 mm (1.8 in)	41 of 100 (Notable)
Wiarton A	Canada	Record daily precipitation	33.1 mm (1.3 in)	40 of 100 (Notable)
Bell Falls	Canada	Record daily precipitation	46.2 mm (1.8 in)	40 of 100 (Notable)
State UNIV	United States	Record daily precipitation	71.4 mm (2.8 in)	40 of 100 (Notable)
Port Jervis	United States	Record daily precipitation	50.8 mm (2.0 in)	40 of 100 (Notable)
Tapoco	United States	Record daily precipitation	89.4 mm (3.5 in)	40 of 100 (Notable)
Baxter	United States	Record daily precipitation	60.2 mm (2.4 in)	39 of 100 (Notable)
Jefferson 2 E	United States	Record daily precipitation	45.2 mm (1.8 in)	39 of 100 (Notable)
Morganton	United States	Record daily precipitation	46.5 mm (1.8 in)	39 of 100 (Notable)
Perkins	Canada	Record daily precipitation	40.6 mm (1.6 in)	38 of 100 (Notable)
Barrage Temiscamingue	Canada	Record daily precipitation	38.2 mm (1.5 in)	38 of 100 (Notable)
Frederick Police Brks	United States	Record daily precipitation	46.2 mm (1.8 in)	38 of 100 (Notable)
Mt Airy 2 W	United States	Record daily precipitation	56.4 mm (2.2 in)	38 of 100 (Notable)
Lebanon	United States	Record daily precipitation	64.0 mm (2.5 in)	38 of 100 (Notable)
Waynesboro	United States	Record daily precipitation	104.9 mm (4.1 in)	38 of 100 (Notable)
Danbury	United States	Record daily precipitation	59.9 mm (2.4 in)	37 of 100 (Notable)
Lakeview 3 NE	United States	Record daily precipitation	40.9 mm (1.6 in)	37 of 100 (Notable)
Barrage Angliers	Canada	Record daily precipitation	31.3 mm (1.2 in)	36 of 100 (Notable)
Kipawa Laniel	Canada	Record daily precipitation	29.8 mm (1.2 in)	36 of 100 (Notable)

Counts by Type and Timescale

775 records

Records set or tied on 21 March 1980 by type: Highest daily maximum 54, Lowest daily maximum 51, Highest daily minimum 71, Lowest daily minimum 61, Heaviest daily rainfall 468, Heaviest daily snowfall 45, Deepest snow cover 25.

Records on 21 March 1980 by type
Record type	Records
Highest daily maximum	54
Lowest daily maximum	51
Highest daily minimum	71
Lowest daily minimum	61
Heaviest daily rainfall	468
Heaviest daily snowfall	45
Deepest snow cover	25

Records on 21 March 1980 by timescale: all-time 1, monthly 25, daily 749.

How Much Records Were Beaten By

691 broken records

Margins by which the 691 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 March 1980

Top 20 records on 21 March 1980 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 1980	Port Hope, CA	monthly rain	52.4 mm (2.1 in)	14.3 mm (0.6 in)	97 years	68 of 100 (Major)
21 March 1980	Murphy 4ESE, US	daily rain	88.9 mm (3.5 in)	43.2 mm (1.7 in)	105 years	65 of 100 (Major)
21 March 1980	Black Rock, US	daily snowfall	22.9 cm (9.0 in)	21.6 cm (8.5 in)	76 years	62 of 100 (Major)
21 March 1980	Trenton Ont Hydro, CA	daily rain	52.3 mm (2.1 in)	30.2 mm (1.2 in)	47 years	60 of 100 (Major)
21 March 1980	Kemptville, CA	daily rain	44.0 mm (1.7 in)	28.8 mm (1.1 in)	47 years	59 of 100 (Notable)
21 March 1980	Campbellford, CA	daily rain	53.8 mm (2.1 in)	33.5 mm (1.3 in)	44 years	59 of 100 (Notable)
21 March 1980	North Bay A, CA	daily rain	43.8 mm (1.7 in)	28.6 mm (1.1 in)	38 years	55 of 100 (Notable)
21 March 1980	Murfreesboro 5 N, US	daily rain	82.6 mm (3.3 in)	39.9 mm (1.6 in)	67 years	54 of 100 (Notable)
21 March 1980	P-Ranch South Place, US	daily snowfall	7.1 cm (2.8 in)	7.1 cm (2.8 in)	82 years	53 of 100 (Notable)
21 March 1980	Richland, US	daily rain	25.7 mm (1.0 in)	20.6 mm (0.8 in)	18 years	53 of 100 (Notable)
21 March 1980	Kurnool, IN	daily rain	32.0 mm (1.3 in)	24.4 mm (1.0 in)	70 years	52 of 100 (Notable)
21 March 1980	Snowville, US	daily snowfall	10.2 cm (4.0 in)	8.9 cm (3.5 in)	84 years	52 of 100 (Notable)
21 March 1980	Cookeville, US	daily rain	93.5 mm (3.7 in)	55.1 mm (2.2 in)	25 years	51 of 100 (Notable)
21 March 1980	Crossville Ed & Rsch STN, US	daily rain	104.9 mm (4.1 in)	67.1 mm (2.6 in)	18 years	51 of 100 (Notable)
21 March 1980	London Int'l Airport, CA	daily rain	39.9 mm (1.6 in)	22.9 mm (0.9 in)	32 years	49 of 100 (Notable)
21 March 1980	Amos, CA	monthly rain	49.0 mm (1.9 in)	7.3 mm (0.29 in)	62 years	49 of 100 (Notable)
21 March 1980	Vosburg, ZA	daily rain	61.5 mm (2.4 in)	25.9 mm (1.0 in)	71 years	49 of 100 (Notable)
21 March 1980	Marshall, US	daily rain	40.1 mm (1.6 in)	20.0 mm (0.8 in)	76 years	49 of 100 (Notable)
21 March 1980	North Bay, CA	daily rain	31.0 mm (1.2 in)	15.8 mm (0.6 in)	38 years	48 of 100 (Notable)
21 March 1980	Keimoes (Pol), ZA	daily rain	64.0 mm (2.5 in)	62.1 mm (2.4 in)	3 years	48 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

1797 to 1980

Records set or tied on this calendar date in each year from 1797 to 1980. 1980 had 775 records.

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

Records on 03-21 in each year
Year	Records
1797	2
1805	1
1806	1
1822	1
1830	1
1836	1
1837	1
1845	1
1846	1
1850	1
1852	2
1857	1
1865	7
1874	1
1877	1
1880	1
1881	1
1883	2
1884	1
1885	5
1886	2
1888	1
1890	3
1892	1
1893	1
1894	1
1895	1
1896	2
1897	2
1898	3
1899	4
1900	4
1901	9
1902	18
1903	23
1904	17
1905	6
1906	3
1907	14
1908	3
1909	11
1910	10
1911	10
1912	36
1913	97
1914	71
1915	27
1916	44
1917	43
1918	43
1919	29
1920	90
1921	96
1922	50
1923	72
1924	96
1925	141
1926	282
1927	179
1928	293
1929	104
1930	99
1931	638
1932	305
1933	235
1934	114
1935	675
1936	225
1937	172
1938	783
1939	280
1940	366
1941	311
1942	330
1943	217
1944	556
1945	294
1946	570
1947	192
1948	948
1949	330
1950	398
1951	779
1952	689
1953	342
1954	211
1955	1,124
1956	686
1957	373
1958	619
1959	230
1960	892
1961	268
1962	548
1963	298
1964	333
1965	1,961
1966	464
1967	487
1968	798
1969	219
1970	612
1971	358
1972	519
1973	385
1974	1,097
1975	751
1976	710
1977	376
1978	838
1979	656
1980	775
1981	676
1982	850
1983	1,673
1984	835
1985	503
1986	1,170
1987	948
1988	1,155
1989	1,396
1990	1,380
1991	1,446
1992	877
1993	687
1994	684
1995	1,141
1996	1,119
1997	1,670
1998	935
1999	1,044
2000	802
2001	1,342
2002	1,593
2003	1,073
2004	1,511
2005	649
2006	1,417
2007	1,220
2008	734
2009	558
2010	1,134
2011	1,451
2012	2,854
2013	727
2014	639
2015	568
2016	553
2017	1,117
2018	809
2019	649
2020	445
2021	489
2022	615
2023	815
2024	432
2025	845
2026	2,614

Download the Data

Data for records on 1980-03-21: 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 March 1980
Margin	Records
0 to 100	686
100 to 200	3
200 to 300	1
300 to 400	0
400 to 500	1