Weather Records on 12 March 1991

607 weather records were set or tied worldwide on 12 March 1991. Highest significance: Rockwell City, US.

Key Facts for 12 March 1991

On 12 March 1991, 607 weather records were set or tied at long-record stations worldwide.
245 were record highs and 105 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 602 daily.
Rockwell City set a daily record precipitation of 40.4 mm (1.6 in) on 12 March 1991.
Across 158 earlier years (1810 to 2026) the same calendar date averaged 495 records.

Record Map

607 stations

607 station records on 12 March 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 March 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rockwell City	United States	Record daily precipitation	40.4 mm (1.6 in)	64 of 100 (Major)
Keble	South Africa	Record daily precipitation	103.0 mm (4.1 in)	59 of 100 (Notable)
Danielskuil	South Africa	Record daily precipitation	93.6 mm (3.7 in)	59 of 100 (Notable)
Moreson	South Africa	Record daily precipitation	78.0 mm (3.1 in)	58 of 100 (Notable)
Mequatlingsnek	South Africa	Record daily precipitation	100.0 mm (3.9 in)	58 of 100 (Notable)
Pot-the-Red	South Africa	Record daily precipitation	85.0 mm (3.3 in)	57 of 100 (Notable)
Excelsior (Mun)	South Africa	Record daily precipitation	85.0 mm (3.3 in)	55 of 100 (Notable)
Silverstreams	South Africa	Record daily precipitation	76.2 mm (3.0 in)	54 of 100 (Notable)
Bordeaux	South Africa	Record daily precipitation	77.0 mm (3.0 in)	48 of 100 (Notable)
Bovenlandsplaats	South Africa	Record daily precipitation	95.0 mm (3.7 in)	48 of 100 (Notable)
Humboldt 3 W	United States	Record daily precipitation	40.1 mm (1.6 in)	48 of 100 (Notable)
Perdeput	South Africa	Record daily precipitation	65.0 mm (2.6 in)	47 of 100 (Notable)
Barkly West (Tnk)	South Africa	Record daily precipitation	50.5 mm (2.0 in)	47 of 100 (Notable)
Postmasburg	South Africa	Record daily precipitation	60.0 mm (2.4 in)	46 of 100 (Notable)
Moirton	South Africa	Record daily precipitation	60.0 mm (2.4 in)	46 of 100 (Notable)
Dunmurray	South Africa	Record daily precipitation	42.5 mm (1.7 in)	44 of 100 (Notable)
Klipfontein"Potfontein"	South Africa	Record daily precipitation	67.0 mm (2.6 in)	44 of 100 (Notable)
Monticello	United States	Record daily snowfall	7.6 cm (3.0 in)	44 of 100 (Notable)
Hamelfontein	South Africa	Record daily precipitation	52.0 mm (2.0 in)	43 of 100 (Notable)
Florisbad	South Africa	Record daily precipitation	72.0 mm (2.8 in)	43 of 100 (Notable)
Warrenton (Mun)	South Africa	Record daily precipitation	60.0 mm (2.4 in)	43 of 100 (Notable)
Hopkins	South Africa	Record daily precipitation	59.5 mm (2.3 in)	43 of 100 (Notable)
Dubuque Rgnl AP	United States	Record daily precipitation	40.6 mm (1.6 in)	43 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record low maximum temperature	25.0 C (77.0 F)	42 of 100 (Notable)
De Aar	South Africa	Record daily precipitation	32.0 mm (1.3 in)	42 of 100 (Notable)
Halfway	United States	Record daily snowfall	15.2 cm (6.0 in)	42 of 100 (Notable)
Uppsala_Aut	Sweden	Record high maximum temperature	9.5 C (49.1 F)	41 of 100 (Notable)
Ladybrand (Skl)	South Africa	Record daily precipitation	50.0 mm (2.0 in)	40 of 100 (Notable)
Belle Plaine	United States	Record daily precipitation	35.8 mm (1.4 in)	40 of 100 (Notable)
Barra Do Pirai	Brazil	Record daily precipitation	75.0 mm (3.0 in)	39 of 100 (Notable)
Cove 1 E	United States	Record daily snowfall	7.6 cm (3.0 in)	39 of 100 (Notable)
Ukiah	United States	Record daily snowfall	7.6 cm (3.0 in)	39 of 100 (Notable)
Newport	United States	Record daily snowfall	15.2 cm (6.0 in)	39 of 100 (Notable)
Venterstad	South Africa	Record daily precipitation	37.0 mm (1.5 in)	38 of 100 (Notable)
Tweespruit	South Africa	Record daily precipitation	45.0 mm (1.8 in)	38 of 100 (Notable)
Edenville (Mun)	South Africa	Record daily precipitation	52.5 mm (2.1 in)	38 of 100 (Notable)
Kommissiepoort	South Africa	Record daily precipitation	54.0 mm (2.1 in)	37 of 100 (Notable)
Hertzogville (Pol)	South Africa	Record daily precipitation	69.0 mm (2.7 in)	37 of 100 (Notable)
Oatlands	South Africa	Record daily precipitation	50.0 mm (2.0 in)	37 of 100 (Notable)
Chicago Midway AP 3SW	United States	Record daily snowfall	15.0 cm (5.9 in)	37 of 100 (Notable)
Snowville	United States	Record high minimum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Ocampo	Mexico	Record high maximum temperature	33.9 C (93.0 F)	35 of 100 (Notable)
Doornpoort	South Africa	Record daily precipitation	69.0 mm (2.7 in)	35 of 100 (Notable)
Weltevrede	South Africa	Record daily precipitation	81.4 mm (3.2 in)	35 of 100 (Notable)
Moline Quad City Intl AP	United States	Record daily precipitation	51.1 mm (2.0 in)	35 of 100 (Notable)
Kenai AP	United States	Record daily snowfall	12.7 cm (5.0 in)	35 of 100 (Notable)
Dubuque Rgnl AP	United States	Record daily snowfall	28.4 cm (11.2 in)	35 of 100 (Notable)
Tia (Highrent)	Australia	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
Cordoba Aeropuerto	Spain	Record daily precipitation	39.7 mm (1.6 in)	34 of 100 (Routine)
L F Wade Intl AP Kindley Fld	Bermuda [United Kingdom]	Record low minimum temperature	7.8 C (46.0 F)	33 of 100 (Routine)
Arecibo 3 ESE	Puerto Rico [United States]	Record low maximum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Slangfontein	South Africa	Record daily precipitation	42.0 mm (1.7 in)	33 of 100 (Routine)
San Luis San Pedro	Mexico	Record high maximum temperature	38.9 C (102.0 F)	32 of 100 (Routine)
Kirklington	South Africa	Record daily precipitation	46.0 mm (1.8 in)	32 of 100 (Routine)
Rico	United States	Record daily snowfall	20.3 cm (8.0 in)	32 of 100 (Routine)
Inverness 3 SE	United States	Record low minimum temperature	0.0 C (32.0 F)	32 of 100 (Routine)
Aledo	United States	Record daily snowfall	10.4 cm (4.1 in)	32 of 100 (Routine)
Mason City Muni AP	United States	Record daily snowfall	13.5 cm (5.3 in)	32 of 100 (Routine)
Modderrivier (Pol)	South Africa	Record daily precipitation	38.2 mm (1.5 in)	31 of 100 (Routine)
Kroonplaats	South Africa	Record daily precipitation	44.5 mm (1.8 in)	31 of 100 (Routine)

Counts by Type and Timescale

607 records

Records set or tied on 12 March 1991 by type: Highest daily maximum 142, Lowest daily maximum 45, Highest daily minimum 103, Lowest daily minimum 60, Heaviest daily rainfall 193, Heaviest daily snowfall 58, Deepest snow cover 6.

Records on 12 March 1991 by type
Record type	Records
Highest daily maximum	142
Lowest daily maximum	45
Highest daily minimum	103
Lowest daily minimum	60
Heaviest daily rainfall	193
Heaviest daily snowfall	58
Deepest snow cover	6

Records on 12 March 1991 by timescale: all-time 0, monthly 5, daily 602.

How Much Records Were Beaten By

500 broken records

Margins by which the 500 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

12 March 1991

Top 20 records on 12 March 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 March 1991	Rockwell City, US	daily rain	40.4 mm (1.6 in)	22.6 mm (0.9 in)	91 years	64 of 100 (Major)
12 March 1991	Keble, ZA	daily rain	103.0 mm (4.1 in)	54.5 mm (2.1 in)	41 years	59 of 100 (Notable)
12 March 1991	Danielskuil, ZA	daily rain	93.6 mm (3.7 in)	69.5 mm (2.7 in)	42 years	59 of 100 (Notable)
12 March 1991	Moreson, ZA	daily rain	78.0 mm (3.1 in)	46.2 mm (1.8 in)	41 years	58 of 100 (Notable)
12 March 1991	Mequatlingsnek, ZA	monthly rain	100.0 mm (3.9 in)	28.6 mm (1.1 in)	65 years	58 of 100 (Notable)
12 March 1991	Pot-the-Red, ZA	daily rain	85.0 mm (3.3 in)	50.7 mm (2.0 in)	42 years	57 of 100 (Notable)
12 March 1991	Excelsior (Mun), ZA	daily rain	85.0 mm (3.3 in)	43.1 mm (1.7 in)	42 years	55 of 100 (Notable)
12 March 1991	Silverstreams, ZA	daily rain	76.2 mm (3.0 in)	51.2 mm (2.0 in)	29 years	54 of 100 (Notable)
12 March 1991	Bordeaux, ZA	daily rain	77.0 mm (3.0 in)	68.0 mm (2.7 in)	5 years	48 of 100 (Notable)
12 March 1991	Bovenlandsplaats, ZA	daily rain	95.0 mm (3.7 in)	72.0 mm (2.8 in)	9 years	48 of 100 (Notable)
12 March 1991	Humboldt 3 W, US	daily rain	40.1 mm (1.6 in)	12.2 mm (0.5 in)	85 years	48 of 100 (Notable)
12 March 1991	Perdeput, ZA	daily rain	65.0 mm (2.6 in)	37.5 mm (1.5 in)	10 years	47 of 100 (Notable)
12 March 1991	Barkly West (Tnk), ZA	daily rain	50.5 mm (2.0 in)	16.0 mm (0.6 in)	73 years	47 of 100 (Notable)
12 March 1991	Postmasburg, ZA	daily rain	60.0 mm (2.4 in)	37.0 mm (1.5 in)	29 years	46 of 100 (Notable)
12 March 1991	Moirton, ZA	daily rain	60.0 mm (2.4 in)	49.0 mm (1.9 in)	13 years	46 of 100 (Notable)
12 March 1991	Dunmurray, ZA	daily rain	42.5 mm (1.7 in)	12.8 mm (0.5 in)	88 years	44 of 100 (Notable)
12 March 1991	Klipfontein"Potfontein", ZA	daily rain	67.0 mm (2.6 in)	42.0 mm (1.7 in)	5 years	44 of 100 (Notable)
12 March 1991	Monticello, US	daily snowfall	7.6 cm (3.0 in)	5.6 cm (2.2 in)	66 years	44 of 100 (Notable)
12 March 1991	Hamelfontein, ZA	daily rain	52.0 mm (2.0 in)	15.9 mm (0.6 in)	72 years	43 of 100 (Notable)
12 March 1991	Florisbad, ZA	daily rain	72.0 mm (2.8 in)	31.1 mm (1.2 in)	42 years	43 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 1991

Records set or tied on this calendar date in each year from 1810 to 1991. 1991 had 607 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 1991-03-12: 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 25	443
25 to 50	29
50 to 75	16
75 to 100	9
100 to 125	0
125 to 150	2
150 to 175	0
175 to 200	1