Weather Records on 18 March 2021

562 weather records were set or tied worldwide on 18 March 2021. Highest significance: Warren (Mumblebone), AU.

Key Facts for 18 March 2021

On 18 March 2021, 562 weather records were set or tied at long-record stations worldwide.
146 were record highs and 63 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 15 monthly and 547 daily.
Warren (Mumblebone) set a daily record precipitation of 67.0 mm (2.6 in) on 18 March 2021.
Across 160 earlier years (1806 to 2026) the same calendar date averaged 477 records.

Record Map

562 stations

562 station records on 18 March 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 March 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Warren (Mumblebone)	Australia	Record daily precipitation	67.0 mm (2.6 in)	72 of 100 (Major)
Trangie Research Station AWS	Australia	Record daily precipitation	72.0 mm (2.8 in)	71 of 100 (Major)
Vega 2NW	United States	Record daily snowfall	21.6 cm (8.5 in)	69 of 100 (Major)
La Harpe	United States	Record daily precipitation	55.1 mm (2.2 in)	66 of 100 (Major)
Bridgeport 5 NW	United States	Record daily precipitation	101.6 mm (4.0 in)	65 of 100 (Major)
Armavir	Russia	Record daily precipitation	27.9 mm (1.1 in)	62 of 100 (Major)
Gruver	United States	Record daily snowfall	15.2 cm (6.0 in)	60 of 100 (Major)
Quambone Station	Australia	Record daily precipitation	83.6 mm (3.3 in)	58 of 100 (Notable)
Guntersville	United States	Record daily precipitation	81.5 mm (3.2 in)	57 of 100 (Notable)
Macomb	United States	Record daily precipitation	57.2 mm (2.3 in)	57 of 100 (Notable)
St Charles Elm Pt	United States	Record daily precipitation	62.7 mm (2.5 in)	55 of 100 (Notable)
Gruver	United States	Record snow depth	15.2 cm (6.0 in)	55 of 100 (Notable)
Old Delamere	Australia	Record daily precipitation	51.4 mm (2.0 in)	54 of 100 (Notable)
Nelson Bay (Nelson Head)	Australia	Record daily precipitation	150.0 mm (5.9 in)	54 of 100 (Notable)
Richmond Raaf	Australia	Record daily precipitation	65.8 mm (2.6 in)	54 of 100 (Notable)
Pana	United States	Record daily precipitation	42.7 mm (1.7 in)	54 of 100 (Notable)
Taylorville 2SE	United States	Record daily precipitation	47.0 mm (1.9 in)	54 of 100 (Notable)
Anderson 1 N	United States	Record daily precipitation	68.6 mm (2.7 in)	54 of 100 (Notable)
Pilliga (Lowana)	Australia	Record daily precipitation	62.6 mm (2.5 in)	53 of 100 (Notable)
Aliceville	United States	Record daily precipitation	92.7 mm (3.6 in)	53 of 100 (Notable)
Quincy Dam 21	United States	Record daily precipitation	45.7 mm (1.8 in)	53 of 100 (Notable)
Sewanee	United States	Record daily precipitation	82.6 mm (3.3 in)	53 of 100 (Notable)
Monroe City	United States	Record daily precipitation	58.4 mm (2.3 in)	52 of 100 (Notable)
Booker	United States	Record daily snowfall	11.4 cm (4.5 in)	52 of 100 (Notable)
Gwabegar Post Office	Australia	Record daily precipitation	70.0 mm (2.8 in)	51 of 100 (Notable)
Science Garden	Philippines	Record daily precipitation	63.0 mm (2.5 in)	51 of 100 (Notable)
Arnett 3NE	United States	Record daily snowfall	7.6 cm (3.0 in)	51 of 100 (Notable)
Dandaloo (Tyrie Homestead)	Australia	Record daily precipitation	50.0 mm (2.0 in)	50 of 100 (Notable)
Pilliga Post Office	Australia	Record daily precipitation	82.6 mm (3.3 in)	50 of 100 (Notable)
Kenebri (Ellerslie)	Australia	Record daily precipitation	60.0 mm (2.4 in)	50 of 100 (Notable)
Olmsted L&D	United States	Record daily precipitation	73.4 mm (2.9 in)	50 of 100 (Notable)
Shelbyville Dam	United States	Record daily precipitation	42.7 mm (1.7 in)	50 of 100 (Notable)
Woodlea	Australia	Record daily precipitation	58.0 mm (2.3 in)	49 of 100 (Notable)
Waterdale	United States	Record snow depth	17.8 cm (7.0 in)	49 of 100 (Notable)
Chickamauga 2 SW	United States	Record daily precipitation	78.7 mm (3.1 in)	49 of 100 (Notable)
Decatur Wtp	United States	Record daily precipitation	39.1 mm (1.5 in)	48 of 100 (Notable)
Marion Junction 2 NE	United States	Record daily precipitation	93.5 mm (3.7 in)	47 of 100 (Notable)
Hannibal Wtr Wks	United States	Record daily precipitation	69.3 mm (2.7 in)	47 of 100 (Notable)
Pittsburgh ASOS	United States	Record daily precipitation	55.6 mm (2.2 in)	47 of 100 (Notable)
Nyngan (Canonbar)	Australia	Record daily precipitation	62.4 mm (2.5 in)	46 of 100 (Notable)
Eumungerie Post Office	Australia	Record daily precipitation	64.4 mm (2.5 in)	46 of 100 (Notable)
Monmouth	United States	Record daily precipitation	28.7 mm (1.1 in)	46 of 100 (Notable)
Ramsey	United States	Record daily precipitation	47.5 mm (1.9 in)	46 of 100 (Notable)
Bradshaw Homestead	Australia	Record daily precipitation	60.4 mm (2.4 in)	45 of 100 (Notable)
Wyanga (Barcoo)	Australia	Record daily precipitation	48.2 mm (1.9 in)	45 of 100 (Notable)
Jacksonville	United States	Record daily precipitation	57.2 mm (2.3 in)	45 of 100 (Notable)
Clayton 1 SSW	United States	Record daily precipitation	49.5 mm (1.9 in)	45 of 100 (Notable)
Beecher City	United States	Record daily precipitation	57.9 mm (2.3 in)	45 of 100 (Notable)
Hoopeston	United States	Record daily precipitation	46.7 mm (1.8 in)	45 of 100 (Notable)
Vandalia	United States	Record daily precipitation	61.0 mm (2.4 in)	45 of 100 (Notable)
Edwardsville 2 W	United States	Record daily precipitation	46.7 mm (1.8 in)	44 of 100 (Notable)
Jerseyville 2 SW	United States	Record daily precipitation	53.6 mm (2.1 in)	44 of 100 (Notable)
Clarksville L&D 24	United States	Record daily precipitation	50.0 mm (2.0 in)	44 of 100 (Notable)
Mexico	United States	Record daily precipitation	72.6 mm (2.9 in)	44 of 100 (Notable)
Monteagle	United States	Record daily precipitation	92.5 mm (3.6 in)	44 of 100 (Notable)
Canyon	United States	Record daily snowfall	7.6 cm (3.0 in)	44 of 100 (Notable)
Nuuanu Rsch 5 775	United States	Record daily precipitation	59.9 mm (2.4 in)	44 of 100 (Notable)
Sedalia Wtp	United States	Record daily precipitation	63.5 mm (2.5 in)	43 of 100 (Notable)
Libby 32 SSE	United States	Record high maximum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Fargo 3ENE	United States	Record daily snowfall	7.6 cm (3.0 in)	43 of 100 (Notable)

Counts by Type and Timescale

562 records

Records set or tied on 18 March 2021 by type: Highest daily maximum 76, Lowest daily maximum 30, Highest daily minimum 70, Lowest daily minimum 33, Heaviest daily rainfall 317, Heaviest daily snowfall 13, Deepest snow cover 23.

Records on 18 March 2021 by type
Record type	Records
Highest daily maximum	76
Lowest daily maximum	30
Highest daily minimum	70
Lowest daily minimum	33
Heaviest daily rainfall	317
Heaviest daily snowfall	13
Deepest snow cover	23

Records on 18 March 2021 by timescale: all-time 0, monthly 15, daily 547.

How Much Records Were Beaten By

493 broken records

Margins by which the 493 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 228.0. Ties are not counted.

Top 20 by Significance

18 March 2021

Top 20 records on 18 March 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 March 2021	Warren (Mumblebone), AU	daily rain	67.0 mm (2.6 in)	48.5 mm (1.9 in)	84 years	72 of 100 (Major)
18 March 2021	Trangie Research Station AWS, AU	daily rain	72.0 mm (2.8 in)	43.0 mm (1.7 in)	84 years	71 of 100 (Major)
18 March 2021	Vega 2NW, US	daily snowfall	21.6 cm (8.5 in)	19.1 cm (7.5 in)	87 years	69 of 100 (Major)
18 March 2021	La Harpe, US	daily rain	55.1 mm (2.2 in)	29.7 mm (1.2 in)	122 years	66 of 100 (Major)
18 March 2021	Bridgeport 5 NW, US	daily rain	101.6 mm (4.0 in)	75.4 mm (3.0 in)	52 years	65 of 100 (Major)
18 March 2021	Armavir, RU	daily rain	27.9 mm (1.1 in)	16.3 mm (0.6 in)	60 years	62 of 100 (Major)
18 March 2021	Gruver, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	79 years	60 of 100 (Major)
18 March 2021	Quambone Station, AU	monthly rain	83.6 mm (3.3 in)	11.7 mm (0.5 in)	94 years	58 of 100 (Notable)
18 March 2021	Guntersville, US	daily rain	81.5 mm (3.2 in)	42.1 mm (1.7 in)	76 years	57 of 100 (Notable)
18 March 2021	Macomb, US	daily rain	57.2 mm (2.3 in)	27.5 mm (1.1 in)	68 years	57 of 100 (Notable)
18 March 2021	St Charles Elm Pt, US	daily rain	62.7 mm (2.5 in)	21.0 mm (0.8 in)	88 years	55 of 100 (Notable)
18 March 2021	Gruver, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	79 years	55 of 100 (Notable)
18 March 2021	Old Delamere, AU	daily rain	51.4 mm (2.0 in)	26.0 mm (1.0 in)	136 years	54 of 100 (Notable)
18 March 2021	Nelson Bay (Nelson Head), AU	daily rain	150.0 mm (5.9 in)	90.0 mm (3.5 in)	16 years	54 of 100 (Notable)
18 March 2021	Richmond Raaf, AU	daily rain	65.8 mm (2.6 in)	44.6 mm (1.8 in)	43 years	54 of 100 (Notable)
18 March 2021	Pana, US	daily rain	42.7 mm (1.7 in)	15.5 mm (0.6 in)	96 years	54 of 100 (Notable)
18 March 2021	Taylorville 2SE, US	daily rain	47.0 mm (1.9 in)	24.9 mm (1.0 in)	68 years	54 of 100 (Notable)
18 March 2021	Anderson 1 N, US	daily rain	68.6 mm (2.7 in)	35.8 mm (1.4 in)	35 years	54 of 100 (Notable)
18 March 2021	Pilliga (Lowana), AU	daily rain	62.6 mm (2.5 in)	57.4 mm (2.3 in)	32 years	53 of 100 (Notable)
18 March 2021	Aliceville, US	daily rain	92.7 mm (3.6 in)	53.6 mm (2.1 in)	60 years	53 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

1806 to 2021

Records set or tied on this calendar date in each year from 1806 to 2021. 2021 had 562 records.

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

Records on 03-18 in each year
Year	Records
1806	1
1807	1
1808	1
1810	1
1814	1
1831	1
1836	1
1839	1
1845	1
1849	1
1850	5
1853	2
1859	1
1863	1
1865	2
1867	1
1868	3
1876	1
1881	1
1882	3
1884	3
1885	1
1887	1
1888	4
1890	3
1891	3
1892	2
1893	1
1894	1
1895	2
1896	10
1897	14
1898	5
1899	8
1900	14
1901	2
1902	9
1903	22
1904	9
1905	19
1906	13
1907	11
1908	8
1909	9
1910	12
1911	17
1912	16
1913	24
1914	32
1915	30
1916	73
1917	45
1918	32
1919	25
1920	39
1921	66
1922	39
1923	262
1924	96
1925	145
1926	251
1927	376
1928	301
1929	106
1930	261
1931	167
1932	212
1933	244
1934	375
1935	87
1936	699
1937	296
1938	304
1939	750
1940	444
1941	954
1942	382
1943	603
1944	321
1945	751
1946	492
1947	328
1948	296
1949	292
1950	1,042
1951	582
1952	474
1953	218
1954	355
1955	469
1956	363
1957	374
1958	347
1959	392
1960	585
1961	579
1962	284
1963	665
1964	348
1965	1,584
1966	540
1967	1,396
1968	915
1969	601
1970	533
1971	405
1972	1,028
1973	716
1974	694
1975	614
1976	538
1977	684
1978	1,003
1979	894
1980	588
1981	570
1982	1,284
1983	1,225
1984	446
1985	731
1986	626
1987	933
1988	1,001
1989	1,147
1990	1,478
1991	706
1992	789
1993	1,683
1994	960
1995	833
1996	518
1997	1,024
1998	1,144
1999	1,051
2000	524
2001	841
2002	1,562
2003	1,425
2004	1,232
2005	1,178
2006	551
2007	1,330
2008	1,066
2009	776
2010	678
2011	993
2012	3,348
2013	783
2014	701
2015	943
2016	675
2017	1,183
2018	921
2019	666
2020	672
2021	562
2022	476
2023	890
2024	843
2025	728
2026	2,870

Download the Data

Data for records on 2021-03-18: 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	466
50 to 100	16
100 to 150	4
150 to 200	6
200 to 250	1