Weather Records on 21 March 2012

2,854 weather records were set or tied worldwide on 21 March 2012. Highest significance: Mount McConnell, AU.

Key Facts for 21 March 2012

On 21 March 2012, 2,854 weather records were set or tied at long-record stations worldwide.
2,130 were record highs and 236 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 379 monthly and 2,474 daily.
Mount McConnell set a daily record precipitation of 126.4 mm (5.0 in) on 21 March 2012.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 468 records.

Record Map

2,000 stations, highest significance shown

2,000 station records on 21 March 2012 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 March 2012: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mount McConnell	Australia	Record daily precipitation	126.4 mm (5.0 in)	80 of 100 (Exceptional)
Roseburg Rgnl AP	United States	Record daily precipitation	58.2 mm (2.3 in)	72 of 100 (Major)
Clinton	United States	Record daily precipitation	141.2 mm (5.6 in)	71 of 100 (Major)
Orange	United States	Record daily precipitation	246.4 mm (9.7 in)	71 of 100 (Major)
Mansfield	United States	Record daily precipitation	109.2 mm (4.3 in)	67 of 100 (Major)
St Lawrence Post Office	Australia	Record daily precipitation	184.4 mm (7.3 in)	65 of 100 (Major)
Leesville	United States	Record daily precipitation	316.7 mm (12.5 in)	64 of 100 (Major)
Wasola 5N	United States	Record daily precipitation	113.0 mm (4.4 in)	64 of 100 (Major)
Spavinaw	United States	Record daily precipitation	72.4 mm (2.9 in)	64 of 100 (Major)
Calico Rock 2 WSW	United States	Record daily precipitation	110.5 mm (4.4 in)	63 of 100 (Major)
Mtn Home 1 NNW	United States	Record daily precipitation	154.9 mm (6.1 in)	63 of 100 (Major)
Minden	United States	Record daily precipitation	113.0 mm (4.4 in)	63 of 100 (Major)
Mansfield 4 NW	United States	Record daily precipitation	152.7 mm (6.0 in)	61 of 100 (Major)
Mount Jukes	Australia	Record daily precipitation	388.0 mm (15.3 in)	60 of 100 (Major)
Camden 1	United States	Record daily precipitation	110.0 mm (4.3 in)	60 of 100 (Major)
Arcadia	United States	Record daily precipitation	168.4 mm (6.6 in)	60 of 100 (Major)
Sailes Fire Twr	United States	Record daily precipitation	157.5 mm (6.2 in)	60 of 100 (Major)
Cottage Grove 2E	United States	Record daily precipitation	40.6 mm (1.6 in)	59 of 100 (Notable)
Mtn View	United States	Record daily precipitation	103.4 mm (4.1 in)	58 of 100 (Notable)
Carville 2 SW	United States	Record daily precipitation	104.6 mm (4.1 in)	57 of 100 (Notable)
Munising	United States	Record high maximum temperature	24.4 C (75.9 F)	57 of 100 (Notable)
Eton State Water Depot	Australia	Record daily precipitation	306.0 mm (12.0 in)	56 of 100 (Notable)
Ruston la Tech	United States	Record daily precipitation	130.3 mm (5.1 in)	56 of 100 (Notable)
Dora 3SE	United States	Record daily precipitation	96.5 mm (3.8 in)	56 of 100 (Notable)
Conway	United States	Record daily precipitation	107.9 mm (4.2 in)	55 of 100 (Notable)
Roseburg	United States	Record daily precipitation	44.7 mm (1.8 in)	55 of 100 (Notable)
Koran	United States	Record daily precipitation	131.1 mm (5.2 in)	54 of 100 (Notable)
Potosi 4 SW	United States	Record high minimum temperature	17.2 C (63.0 F)	54 of 100 (Notable)
Ravenswood Post Office	Australia	Record daily precipitation	68.0 mm (2.7 in)	53 of 100 (Notable)
Corvallis State UNIV	United States	Record daily precipitation	34.5 mm (1.4 in)	53 of 100 (Notable)
Estacada 2 SE	United States	Record daily precipitation	47.2 mm (1.9 in)	53 of 100 (Notable)
Holley	United States	Record daily precipitation	49.5 mm (1.9 in)	53 of 100 (Notable)
Saginaw Mbs Intl AP	United States	Record high maximum temperature	30.6 C (87.1 F)	53 of 100 (Notable)
Barnganal Blue Mountain	Australia	Record daily precipitation	168.0 mm (6.6 in)	52 of 100 (Notable)
Ashland	United States	Record daily precipitation	140.5 mm (5.5 in)	52 of 100 (Notable)
De Ridder	United States	Record daily precipitation	150.6 mm (5.9 in)	52 of 100 (Notable)
E Tawas	United States	Record high minimum temperature	10.6 C (51.1 F)	52 of 100 (Notable)
Benton	United States	Record daily precipitation	109.7 mm (4.3 in)	51 of 100 (Notable)
Carlinville	United States	Record high minimum temperature	18.3 C (64.9 F)	51 of 100 (Notable)
Streator 2SE	United States	Record high minimum temperature	17.8 C (64.0 F)	51 of 100 (Notable)
Howell Wwtp	United States	Record high maximum temperature	28.3 C (82.9 F)	51 of 100 (Notable)
Bowling Green Wwtp	United States	Record high maximum temperature	29.4 C (84.9 F)	51 of 100 (Notable)
Bandon 2 NNE	United States	Record daily precipitation	56.6 mm (2.2 in)	51 of 100 (Notable)
Estacada 2 SE	United States	Record daily snowfall	5.1 cm (2.0 in)	51 of 100 (Notable)
Hamburg	United States	Record high minimum temperature	14.4 C (57.9 F)	51 of 100 (Notable)
Oconto 4 W	United States	Record high maximum temperature	26.1 C (79.0 F)	51 of 100 (Notable)
Oconto 4 W	United States	Record high minimum temperature	13.3 C (55.9 F)	51 of 100 (Notable)
Oshkosh	United States	Record high maximum temperature	27.2 C (81.0 F)	51 of 100 (Notable)
Marquette	United States	Record high minimum temperature	8.9 C (48.0 F)	51 of 100 (Notable)
Gilbert	United States	Record daily precipitation	95.2 mm (3.7 in)	50 of 100 (Notable)
Elgin Water	United States	Record high maximum temperature	28.3 C (82.9 F)	50 of 100 (Notable)
Ann Arbor U of Mich	United States	Record high maximum temperature	28.9 C (84.0 F)	50 of 100 (Notable)
Big Rapids Wtp	United States	Record high maximum temperature	28.3 C (82.9 F)	50 of 100 (Notable)
Coldwater St School	United States	Record high maximum temperature	28.9 C (84.0 F)	50 of 100 (Notable)
Pontiac Wwtp	United States	Record high maximum temperature	27.8 C (82.0 F)	50 of 100 (Notable)
Tecumseh 1W	United States	Record daily precipitation	96.5 mm (3.8 in)	50 of 100 (Notable)
Greenville	United States	Record daily precipitation	59.2 mm (2.3 in)	50 of 100 (Notable)
Leaburg 1 SW	United States	Record daily snowfall	7.1 cm (2.8 in)	50 of 100 (Notable)
Woodstock	United States	Record high maximum temperature	27.2 C (81.0 F)	50 of 100 (Notable)
Lake Mills Wwtp	United States	Record high maximum temperature	28.3 C (82.9 F)	50 of 100 (Notable)

Counts by Type and Timescale

2,854 records

Records set or tied on 21 March 2012 by type: Highest daily maximum 1,000, Lowest daily maximum 121, Highest daily minimum 1,130, Lowest daily minimum 115, Heaviest daily rainfall 414, Heaviest daily snowfall 43, Deepest snow cover 31.

Records on 21 March 2012 by type
Record type	Records
Highest daily maximum	1,000
Lowest daily maximum	121
Highest daily minimum	1,130
Lowest daily minimum	115
Heaviest daily rainfall	414
Heaviest daily snowfall	43
Deepest snow cover	31

Records on 21 March 2012 by timescale: all-time 1, monthly 379, daily 2,474.

How Much Records Were Beaten By

2,405 broken records

Margins by which the 2,405 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 508.0. Ties are not counted.

Top 20 by Significance

21 March 2012

Top 20 records on 21 March 2012 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 2012	Mount McConnell, AU	daily rain	126.4 mm (5.0 in)	90.8 mm (3.6 in)	102 years	80 of 100 (Exceptional)
21 March 2012	Roseburg Rgnl AP, US	monthly rain	58.2 mm (2.3 in)	17.8 mm (0.7 in)	74 years	72 of 100 (Major)
21 March 2012	Clinton, US	daily rain	141.2 mm (5.6 in)	73.4 mm (2.9 in)	77 years	71 of 100 (Major)
21 March 2012	Orange, US	monthly rain	246.4 mm (9.7 in)	137.7 mm (5.4 in)	38 years	71 of 100 (Major)
21 March 2012	Mansfield, US	daily rain	109.2 mm (4.3 in)	62.2 mm (2.4 in)	57 years	67 of 100 (Major)
21 March 2012	St Lawrence Post Office, AU	daily rain	184.4 mm (7.3 in)	67.3 mm (2.6 in)	113 years	65 of 100 (Major)
21 March 2012	Leesville, US	all-time rain	316.7 mm (12.5 in)	37.3 mm (1.5 in)	46 years	64 of 100 (Major)
21 March 2012	Wasola 5N, US	daily rain	113.0 mm (4.4 in)	73.4 mm (2.9 in)	57 years	64 of 100 (Major)
21 March 2012	Spavinaw, US	daily rain	72.4 mm (2.9 in)	45.2 mm (1.8 in)	64 years	64 of 100 (Major)
21 March 2012	Calico Rock 2 WSW, US	daily rain	110.5 mm (4.4 in)	65.3 mm (2.6 in)	44 years	63 of 100 (Major)
21 March 2012	Mtn Home 1 NNW, US	daily rain	154.9 mm (6.1 in)	105.1 mm (4.1 in)	44 years	63 of 100 (Major)
21 March 2012	Minden, US	daily rain	113.0 mm (4.4 in)	61.7 mm (2.4 in)	57 years	63 of 100 (Major)
21 March 2012	Mansfield 4 NW, US	monthly rain	152.7 mm (6.0 in)	18.8 mm (0.7 in)	113 years	61 of 100 (Major)
21 March 2012	Mount Jukes, AU	monthly rain	388.0 mm (15.3 in)	130.0 mm (5.1 in)	35 years	60 of 100 (Major)
21 March 2012	Camden 1, US	daily rain	110.0 mm (4.3 in)	54.6 mm (2.1 in)	57 years	60 of 100 (Major)
21 March 2012	Arcadia, US	monthly rain	168.4 mm (6.6 in)	79.2 mm (3.1 in)	9 years	60 of 100 (Major)
21 March 2012	Sailes Fire Twr, US	monthly rain	157.5 mm (6.2 in)	46.2 mm (1.8 in)	46 years	60 of 100 (Major)
21 March 2012	Cottage Grove 2E, US	daily rain	40.6 mm (1.6 in)	20.3 mm (0.8 in)	82 years	59 of 100 (Notable)
21 March 2012	Dufur, US	daily rain	18.3 mm (0.7 in)	9.2 mm (0.36 in)	96 years	20 of 100 (Routine)
21 March 2012	Pomeroy, US	daily rain	24.9 mm (1.0 in)	12.2 mm (0.5 in)	82 years	20 of 100 (Routine)

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 2012

Records set or tied on this calendar date in each year from 1797 to 2012. 2012 had 2,854 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 2012-03-21: 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 2026-10-13 (13 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).

Margin	Records
0 to 100	2,386
100 to 200	15
200 to 300	2
300 to 400	1
400 to 500	0
500 to 600	1