Weather Records on 21 March 2009

558 weather records were set or tied worldwide on 21 March 2009. Highest significance: Hopelchen, MX.

Key Facts for 21 March 2009

On 21 March 2009, 558 weather records were set or tied at long-record stations worldwide.
361 were record highs and 106 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 14 monthly and 544 daily.
Hopelchen set a daily record precipitation of 69.9 mm (2.8 in) on 21 March 2009.
Across 157 earlier years (1797 to 2026) the same calendar date averaged 482 records.

Record Map

558 stations

558 station records on 21 March 2009 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 March 2009: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hopelchen	Mexico	Record daily precipitation	69.9 mm (2.8 in)	58 of 100 (Notable)
Comondu	Mexico	Record high minimum temperature	25.0 C (77.0 F)	44 of 100 (Notable)
Freiburg	Germany	Record low minimum temperature	-6.1 C (21.0 F)	43 of 100 (Notable)
Roy	United States	Record high minimum temperature	8.3 C (46.9 F)	42 of 100 (Notable)
Gravette	United States	Record daily precipitation	27.9 mm (1.1 in)	41 of 100 (Notable)
Purdum	United States	Record high minimum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Melbourne Regional Office	Australia	Record high maximum temperature	34.6 C (94.3 F)	40 of 100 (Notable)
Mapleton Post Office	Australia	Record daily precipitation	55.4 mm (2.2 in)	39 of 100 (Notable)
Mount Gambier Post Office	Australia	Record high maximum temperature	34.9 C (94.8 F)	38 of 100 (Notable)
Zaragoza (Smn)	Mexico	Record high minimum temperature	22.8 C (73.0 F)	38 of 100 (Notable)
Beloit	United States	Record high minimum temperature	7.8 C (46.0 F)	38 of 100 (Notable)
Corfu	Greece	Record daily precipitation	44.2 mm (1.7 in)	37 of 100 (Notable)
Grace	United States	Record high maximum temperature	19.4 C (66.9 F)	36 of 100 (Notable)
Madera	Mexico	Record high maximum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Zoquitlan	Mexico	Record low maximum temperature	10.0 C (50.0 F)	33 of 100 (Routine)
Nilchi	Mexico	Record daily precipitation	39.9 mm (1.6 in)	32 of 100 (Routine)
Big Sandy	United States	Record high minimum temperature	1.7 C (35.1 F)	32 of 100 (Routine)
Kotzebue AP	United States	Record snow depth	142.2 cm (56.0 in)	32 of 100 (Routine)
Ustica Island	Italy	Record low maximum temperature	5.8 C (42.4 F)	31 of 100 (Routine)
Jamestown State Hosp	United States	Record snow depth	12.7 cm (5.0 in)	31 of 100 (Routine)
Changsha	China	Record high minimum temperature	21.0 C (69.8 F)	30 of 100 (Routine)
Edinburgh: Royal Botanic Garde	United Kingdom	Record high maximum temperature	16.7 C (62.1 F)	30 of 100 (Routine)
Tolt S Fk Rsvr	United States	Record snow depth	17.8 cm (7.0 in)	30 of 100 (Routine)
Miles City AP	United States	Record high maximum temperature	23.9 C (75.0 F)	30 of 100 (Routine)
Baradine (Woodville)	Australia	Record daily precipitation	27.0 mm (1.1 in)	29 of 100 (Routine)
Nancheng	China	Record high minimum temperature	20.9 C (69.6 F)	29 of 100 (Routine)
Mullheim	Germany	Record low minimum temperature	-6.9 C (19.6 F)	29 of 100 (Routine)
Worms	Germany	Record low minimum temperature	-6.0 C (21.2 F)	29 of 100 (Routine)
Lagunillas	Mexico	Record low maximum temperature	21.7 C (71.1 F)	29 of 100 (Routine)
Huautla	Mexico	Record high maximum temperature	38.9 C (102.0 F)	29 of 100 (Routine)
Nome AP	United States	Record snow depth	185.4 cm (73.0 in)	29 of 100 (Routine)
Jian	China	Record high minimum temperature	21.0 C (69.8 F)	28 of 100 (Routine)
Ojmjakon	Russia	Record high minimum temperature	-12.7 C (9.1 F)	28 of 100 (Routine)
Manley Hot Springs	United States	Record low maximum temperature	-16.1 C (3.0 F)	28 of 100 (Routine)
Comondu	Mexico	Record high maximum temperature	41.7 C (107.1 F)	27 of 100 (Routine)
Jiggs 2NE	United States	Record daily snowfall	12.7 cm (5.0 in)	27 of 100 (Routine)
Turtle Lake	United States	Record snow depth	35.6 cm (14.0 in)	27 of 100 (Routine)
Daly Waters AWS	Australia	Record low minimum temperature	16.5 C (61.7 F)	26 of 100 (Routine)
Essendon Airport	Australia	Record high maximum temperature	34.8 C (94.6 F)	26 of 100 (Routine)
Laverton Raaf	Australia	Record high maximum temperature	35.2 C (95.4 F)	26 of 100 (Routine)
Ganzhou	China	Record high minimum temperature	23.0 C (73.4 F)	26 of 100 (Routine)
Xilin Hot	China	Record high maximum temperature	16.4 C (61.5 F)	25 of 100 (Routine)
Lingling	China	Record high minimum temperature	24.2 C (75.6 F)	25 of 100 (Routine)
Baden-Baden-Geroldsau	Germany	Record low minimum temperature	-5.9 C (21.4 F)	25 of 100 (Routine)
Callejones	Mexico	Record high minimum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
Tveitsund	Norway	Record high maximum temperature	15.4 C (59.7 F)	25 of 100 (Routine)
Sredhekolymsk	Russia	Record high maximum temperature	0.5 C (32.9 F)	25 of 100 (Routine)
Bell Ranch	United States	Record high minimum temperature	12.8 C (55.0 F)	25 of 100 (Routine)
Kaycee	United States	Record high maximum temperature	22.8 C (73.0 F)	25 of 100 (Routine)
Fort Huachuca	United States	Record high maximum temperature	27.2 C (81.0 F)	25 of 100 (Routine)
Bozeman Gallatin Fld AP	United States	Record high maximum temperature	18.3 C (64.9 F)	25 of 100 (Routine)
Horsham Polkemmet Rd	Australia	Record high maximum temperature	37.1 C (98.8 F)	24 of 100 (Routine)
Yichang	China	Record high minimum temperature	15.2 C (59.4 F)	24 of 100 (Routine)
Guilin	China	Record high minimum temperature	21.9 C (71.4 F)	24 of 100 (Routine)
Perl-Nennig	Germany	Record low minimum temperature	-7.3 C (18.9 F)	24 of 100 (Routine)
Pinedale	United States	Record high maximum temperature	14.4 C (57.9 F)	24 of 100 (Routine)
Taiyuan	China	Record high minimum temperature	11.6 C (52.9 F)	23 of 100 (Routine)
Enshi	China	Record high minimum temperature	14.6 C (58.3 F)	23 of 100 (Routine)
Boxian	China	Record daily precipitation	26.5 mm (1.0 in)	23 of 100 (Routine)
Campobasso	Italy	Record low maximum temperature	-1.0 C (30.2 F)	23 of 100 (Routine)

Counts by Type and Timescale

558 records

Records set or tied on 21 March 2009 by type: Highest daily maximum 192, Lowest daily maximum 39, Highest daily minimum 169, Lowest daily minimum 67, Heaviest daily rainfall 76, Heaviest daily snowfall 5, Deepest snow cover 10.

Records on 21 March 2009 by type
Record type	Records
Highest daily maximum	192
Lowest daily maximum	39
Highest daily minimum	169
Lowest daily minimum	67
Heaviest daily rainfall	76
Heaviest daily snowfall	5
Deepest snow cover	10

Records on 21 March 2009 by timescale: all-time 0, monthly 14, daily 544.

How Much Records Were Beaten By

425 broken records

Margins by which the 425 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 355.0. Ties are not counted.

Top 20 by Significance

21 March 2009

Top 20 records on 21 March 2009 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 March 2009	Hopelchen, MX	daily rain	69.9 mm (2.8 in)	68.6 mm (2.7 in)	40 years	58 of 100 (Notable)
21 March 2009	Comondu, MX	daily high min	25.0 C (77.0 F)	5.0 C (9.0 F)	72 years	44 of 100 (Notable)
21 March 2009	Freiburg, DE	daily low min	-6.1 C (21.0 F)	1.4 C (2.5 F)	109 years	43 of 100 (Notable)
21 March 2009	Roy, US	daily high min	8.3 C (46.9 F)	2.7 C (4.9 F)	92 years	42 of 100 (Notable)
21 March 2009	Gravette, US	daily rain	27.9 mm (1.1 in)	3.8 mm (0.15 in)	96 years	41 of 100 (Notable)
21 March 2009	Purdum, US	daily high min	7.2 C (45.0 F)	1.6 C (2.9 F)	99 years	41 of 100 (Notable)
21 March 2009	Melbourne Regional Office, AU	daily high max	34.6 C (94.3 F)	1.7 C (3.1 F)	92 years	40 of 100 (Notable)
21 March 2009	Mapleton Post Office, AU	daily rain	55.4 mm (2.2 in)	2.1 mm (0.08 in)	99 years	39 of 100 (Notable)
21 March 2009	Mount Gambier Post Office, AU	daily high max	34.9 C (94.8 F)	1.0 C (1.8 F)	92 years	38 of 100 (Notable)
21 March 2009	Zaragoza (Smn), MX	monthly high min	22.8 C (73.0 F)	1.1 C (2.0 F)	60 years	38 of 100 (Notable)
21 March 2009	Beloit, US	daily high min	7.8 C (46.0 F)	1.1 C (2.0 F)	92 years	38 of 100 (Notable)
21 March 2009	Corfu, GR	daily rain	44.2 mm (1.7 in)	20.8 mm (0.8 in)	46 years	37 of 100 (Notable)
21 March 2009	Grace, US	daily high max	19.4 C (66.9 F)	1.1 C (2.0 F)	80 years	36 of 100 (Notable)
21 March 2009	Madera, MX	daily high max	25.6 C (78.1 F)	0.6 C (1.1 F)	80 years	33 of 100 (Routine)
21 March 2009	Zoquitlan, MX	daily low max	10.0 C (50.0 F)	6.7 C (12.1 F)	42 years	33 of 100 (Routine)
21 March 2009	Nilchi, MX	daily rain	39.9 mm (1.6 in)	38.1 mm (1.5 in)	16 years	32 of 100 (Routine)
21 March 2009	Big Sandy, US	daily high min	1.7 C (35.1 F)	0.6 C (1.1 F)	80 years	32 of 100 (Routine)
21 March 2009	Kotzebue AP, US	daily snow depth	142.2 cm (56.0 in)	35.5 cm (14.0 in)	36 years	32 of 100 (Routine)
21 March 2009	Ustica Island, IT	daily low max	5.8 C (42.4 F)	4.2 C (7.6 F)	34 years	31 of 100 (Routine)
21 March 2009	Jamestown State Hosp, US	daily snow depth	12.7 cm (5.0 in)	2.5 cm (1.0 in)	68 years	31 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 2009

Records set or tied on this calendar date in each year from 1797 to 2009. 2009 had 558 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 2009-03-21: 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 50	418
50 to 100	2
100 to 150	2
150 to 200	1
200 to 250	0
250 to 300	1
300 to 350	0
350 to 400	1