Weather Records on 12 March 2021

659 weather records were set or tied worldwide on 12 March 2021. Highest significance: Black Rock, US.

Key Facts for 12 March 2021

On 12 March 2021, 659 weather records were set or tied at long-record stations worldwide.
346 were record highs and 82 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 656 daily.
Black Rock set a daily record snow depth of 30.5 cm (12.0 in) on 12 March 2021.
Across 158 earlier years (1810 to 2026) the same calendar date averaged 494 records.

Record Map

659 stations

659 station records on 12 March 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 March 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Black Rock	United States	Record snow depth	30.5 cm (12.0 in)	71 of 100 (Major)
Fernflat	Australia	Record daily precipitation	83.0 mm (3.3 in)	70 of 100 (Major)
Marshfield 4 WSW	United States	Record daily precipitation	78.0 mm (3.1 in)	63 of 100 (Major)
Halenanaho 1006	United States	Record daily precipitation	236.2 mm (9.3 in)	62 of 100 (Major)
Mungindi Post Office	Australia	Record daily precipitation	50.0 mm (2.0 in)	61 of 100 (Major)
Henderson 8 SSW	United States	Record daily precipitation	72.1 mm (2.8 in)	55 of 100 (Notable)
Rockley Post Office	Australia	Record daily precipitation	40.2 mm (1.6 in)	53 of 100 (Notable)
Donkey Reservoir	United States	Record daily precipitation	27.9 mm (1.1 in)	53 of 100 (Notable)
Carneys Creek the Ranch	Australia	Record daily precipitation	126.0 mm (5.0 in)	50 of 100 (Notable)
Portland (Jamieson St)	Australia	Record daily precipitation	38.0 mm (1.5 in)	50 of 100 (Notable)
Chanute Martin Johnson AP	United States	Record daily precipitation	61.5 mm (2.4 in)	50 of 100 (Notable)
Salem	United States	Record daily precipitation	63.2 mm (2.5 in)	49 of 100 (Notable)
Flora Valley	Australia	Record daily precipitation	48.0 mm (1.9 in)	47 of 100 (Notable)
De Grey	Australia	Record daily precipitation	58.0 mm (2.3 in)	47 of 100 (Notable)
Omaha	United States	Record daily precipitation	80.0 mm (3.1 in)	46 of 100 (Notable)
Harrisburg	United States	Record daily precipitation	101.6 mm (4.0 in)	46 of 100 (Notable)
Adak AP	United States	Record daily precipitation	38.6 mm (1.5 in)	46 of 100 (Notable)
Rangely 1E	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Newark Ag Farm	United States	Record high minimum temperature	11.1 C (52.0 F)	45 of 100 (Notable)
Lowell	United States	Record high maximum temperature	22.8 C (73.0 F)	45 of 100 (Notable)
Capitol Reef Np	United States	Record daily snowfall	15.2 cm (6.0 in)	45 of 100 (Notable)
Woodhouselee (Leeston)	Australia	Record daily precipitation	57.0 mm (2.2 in)	44 of 100 (Notable)
Julian Cdf	United States	Record low maximum temperature	5.6 C (42.1 F)	44 of 100 (Notable)
Blue Hill Coop	United States	Record high maximum temperature	21.7 C (71.1 F)	44 of 100 (Notable)
Middleboro	United States	Record high maximum temperature	18.9 C (66.0 F)	44 of 100 (Notable)
Nashua 2 NNW	United States	Record high maximum temperature	21.7 C (71.1 F)	44 of 100 (Notable)
Hightstown 2 W	United States	Record high maximum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Selinsgrove 2 S	United States	Record high maximum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Nundle Post Office	Australia	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)
1 N McLeansboro	United States	Record daily precipitation	44.2 mm (1.7 in)	43 of 100 (Notable)
Lawrence	United States	Record high maximum temperature	22.2 C (72.0 F)	43 of 100 (Notable)
Towanda 1 S	United States	Record high maximum temperature	21.1 C (70.0 F)	43 of 100 (Notable)
Bundaberg Sugar Res STN	Australia	Record daily precipitation	79.0 mm (3.1 in)	42 of 100 (Notable)
Crookwell (Gundowringa)	Australia	Record daily precipitation	57.0 mm (2.2 in)	42 of 100 (Notable)
Lichinga	Mozambique	Record low minimum temperature	11.5 C (52.7 F)	42 of 100 (Notable)
Tell City	United States	Record daily precipitation	56.6 mm (2.2 in)	42 of 100 (Notable)
Licking 4N	United States	Record daily precipitation	55.1 mm (2.2 in)	42 of 100 (Notable)
Ashland	United States	Record high minimum temperature	14.4 C (57.9 F)	42 of 100 (Notable)
Ny City Cntrl Park	United States	Record high minimum temperature	11.1 C (52.0 F)	42 of 100 (Notable)
Dubbo (Mentone)	Australia	Record daily precipitation	30.2 mm (1.2 in)	41 of 100 (Notable)
Owase	Japan	Record daily precipitation	136.9 mm (5.4 in)	41 of 100 (Notable)
Freehold-Marlboro	United States	Record high minimum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Delhi 2 SE	United States	Record high maximum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Watertown	United States	Record high maximum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Oberon (Jenolan Caves Road)	Australia	Record daily precipitation	58.0 mm (2.3 in)	40 of 100 (Notable)
Elatma	Russia	Record low minimum temperature	-24.3 C (-11.7 F)	40 of 100 (Notable)
Carbondale Sewage Plt	United States	Record daily precipitation	81.3 mm (3.2 in)	40 of 100 (Notable)
Winchester 7 SE	United States	Record high maximum temperature	25.6 C (78.1 F)	40 of 100 (Notable)
Minden	United States	Record daily snowfall	7.6 cm (3.0 in)	39 of 100 (Notable)
Avon	United States	Record high maximum temperature	21.7 C (71.1 F)	39 of 100 (Notable)
Elk City 4 W	United States	Record daily precipitation	36.6 mm (1.4 in)	39 of 100 (Notable)
Cooma Airport AWS	Australia	Record daily precipitation	35.6 mm (1.4 in)	38 of 100 (Notable)
Madison	United States	Record high maximum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
Brockton	United States	Record high minimum temperature	9.4 C (48.9 F)	38 of 100 (Notable)
W Frankfort	United States	Record daily precipitation	49.5 mm (1.9 in)	37 of 100 (Notable)
Cannelton	United States	Record daily precipitation	55.4 mm (2.2 in)	37 of 100 (Notable)
Maroon Dam	Australia	Record daily precipitation	46.4 mm (1.8 in)	36 of 100 (Notable)
Oberon (Jenolan Caves)	Australia	Record daily precipitation	52.2 mm (2.1 in)	36 of 100 (Notable)
Lawrence	United States	Record high minimum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Ash Grove 4S	United States	Record daily precipitation	48.8 mm (1.9 in)	36 of 100 (Notable)

Counts by Type and Timescale

659 records

Records set or tied on 12 March 2021 by type: Highest daily maximum 145, Lowest daily maximum 44, Highest daily minimum 201, Lowest daily minimum 38, Heaviest daily rainfall 213, Heaviest daily snowfall 11, Deepest snow cover 7.

Records on 12 March 2021 by type
Record type	Records
Highest daily maximum	145
Lowest daily maximum	44
Highest daily minimum	201
Lowest daily minimum	38
Heaviest daily rainfall	213
Heaviest daily snowfall	11
Deepest snow cover	7

Records on 12 March 2021 by timescale: all-time 0, monthly 3, daily 656.

How Much Records Were Beaten By

562 broken records

Margins by which the 562 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 229.0. Ties are not counted.

Top 20 by Significance

12 March 2021

Top 20 records on 12 March 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 March 2021	Black Rock, US	daily snow depth	30.5 cm (12.0 in)	22.9 cm (9.0 in)	114 years	71 of 100 (Major)
12 March 2021	Fernflat, AU	daily rain	83.0 mm (3.3 in)	52.5 mm (2.1 in)	96 years	70 of 100 (Major)
12 March 2021	Marshfield 4 WSW, US	daily rain	78.0 mm (3.1 in)	53.4 mm (2.1 in)	44 years	63 of 100 (Major)
12 March 2021	Halenanaho 1006, US	daily rain	236.2 mm (9.3 in)	168.9 mm (6.6 in)	47 years	62 of 100 (Major)
12 March 2021	Mungindi Post Office, AU	daily rain	50.0 mm (2.0 in)	33.2 mm (1.3 in)	126 years	61 of 100 (Major)
12 March 2021	Henderson 8 SSW, US	daily rain	72.1 mm (2.8 in)	24.6 mm (1.0 in)	122 years	55 of 100 (Notable)
12 March 2021	Rockley Post Office, AU	daily rain	40.2 mm (1.6 in)	16.3 mm (0.6 in)	115 years	53 of 100 (Notable)
12 March 2021	Donkey Reservoir, US	daily rain	27.9 mm (1.1 in)	22.8 mm (0.9 in)	35 years	53 of 100 (Notable)
12 March 2021	Carneys Creek the Ranch, AU	daily rain	126.0 mm (5.0 in)	72.0 mm (2.8 in)	20 years	50 of 100 (Notable)
12 March 2021	Portland (Jamieson St), AU	daily rain	38.0 mm (1.5 in)	33.2 mm (1.3 in)	47 years	50 of 100 (Notable)
12 March 2021	Chanute Martin Johnson AP, US	daily rain	61.5 mm (2.4 in)	21.6 mm (0.9 in)	74 years	50 of 100 (Notable)
12 March 2021	Salem, US	daily rain	63.2 mm (2.5 in)	32.2 mm (1.3 in)	46 years	49 of 100 (Notable)
12 March 2021	Flora Valley, AU	daily rain	48.0 mm (1.9 in)	48.0 mm (1.9 in)	50 years	47 of 100 (Notable)
12 March 2021	De Grey, AU	daily rain	58.0 mm (2.3 in)	44.0 mm (1.7 in)	78 years	47 of 100 (Notable)
12 March 2021	Omaha, US	daily rain	80.0 mm (3.1 in)	34.3 mm (1.4 in)	52 years	46 of 100 (Notable)
12 March 2021	Harrisburg, US	daily rain	101.6 mm (4.0 in)	51.6 mm (2.0 in)	15 years	46 of 100 (Notable)
12 March 2021	Adak AP, US	daily rain	38.6 mm (1.5 in)	20.6 mm (0.8 in)	39 years	46 of 100 (Notable)
12 March 2021	Rangely 1E, US	daily snowfall	7.6 cm (3.0 in)	2.8 cm (1.1 in)	120 years	45 of 100 (Notable)
12 March 2021	Newark Ag Farm, US	daily high min	11.1 C (52.0 F)	2.8 C (5.0 F)	122 years	45 of 100 (Notable)
12 March 2021	Lowell, US	daily high max	22.8 C (73.0 F)	2.8 C (5.0 F)	119 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

1810 to 2021

Records set or tied on this calendar date in each year from 1810 to 2021. 2021 had 659 records.

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

Records on 03-12 in each year
Year	Records
1810	2
1822	2
1845	2
1847	2
1849	1
1854	1
1855	1
1857	1
1859	1
1860	2
1861	1
1862	1
1867	1
1878	1
1879	1
1881	2
1882	1
1883	3
1884	3
1885	1
1886	6
1887	1
1888	4
1890	5
1891	5
1892	1
1893	1
1894	2
1895	3
1896	2
1897	4
1899	2
1900	4
1901	3
1902	14
1903	8
1904	7
1905	12
1906	34
1907	9
1908	11
1909	26
1910	23
1911	15
1912	7
1913	19
1914	89
1915	17
1916	27
1917	54
1918	96
1919	50
1920	42
1921	59
1922	29
1923	165
1924	168
1925	127
1926	128
1927	399
1928	204
1929	324
1930	210
1931	159
1932	589
1933	290
1934	639
1935	330
1936	399
1937	189
1938	293
1939	525
1940	588
1941	215
1942	239
1943	194
1944	448
1945	241
1946	532
1947	727
1948	1,510
1949	544
1950	841
1951	475
1952	433
1953	298
1954	603
1955	613
1956	1,159
1957	371
1958	611
1959	513
1960	891
1961	432
1962	846
1963	669
1964	285
1965	422
1966	384
1967	1,135
1968	931
1969	1,254
1970	391
1971	481
1972	1,215
1973	890
1974	784
1975	540
1976	657
1977	1,834
1978	554
1979	606
1980	601
1981	1,112
1982	860
1983	1,057
1984	1,235
1985	886
1986	658
1987	728
1988	918
1989	1,402
1990	2,905
1991	607
1992	1,423
1993	931
1994	619
1995	1,067
1996	1,030
1997	990
1998	2,483
1999	636
2000	715
2001	1,392
2002	935
2003	703
2004	649
2005	1,020
2006	2,121
2007	1,652
2008	684
2009	1,148
2010	791
2011	494
2012	981
2013	874
2014	645
2015	793
2016	809
2017	702
2018	609
2019	865
2020	762
2021	659
2022	1,144
2023	877
2024	527
2025	615
2026	1,212

Download the Data

Data for records on 2021-03-12: 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	553
50 to 100	5
100 to 150	1
150 to 200	2
200 to 250	1