Weather Records on 18 March 2011

993 weather records were set or tied worldwide on 18 March 2011. Highest significance: Glen Royal, AU.

Key Facts for 18 March 2011

On 18 March 2011, 993 weather records were set or tied at long-record stations worldwide.
570 were record highs and 197 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 980 daily.
Glen Royal set a daily record precipitation of 94.0 mm (3.7 in) on 18 March 2011.
Across 160 earlier years (1806 to 2026) the same calendar date averaged 474 records.

Record Map

993 stations

993 station records on 18 March 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 March 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Glen Royal	Australia	Record daily precipitation	94.0 mm (3.7 in)	68 of 100 (Major)
Port Augusta (Carriewerloo STN	Australia	Record daily precipitation	30.0 mm (1.2 in)	62 of 100 (Major)
Wishek	United States	Record snow depth	106.7 cm (42.0 in)	62 of 100 (Major)
Mount Irving	Australia	Record daily precipitation	53.0 mm (2.1 in)	61 of 100 (Major)
Gillespie	Australia	Record daily precipitation	75.0 mm (3.0 in)	57 of 100 (Notable)
Havelock	Australia	Record daily precipitation	78.8 mm (3.1 in)	53 of 100 (Notable)
Carina Downs	Australia	Record daily precipitation	81.2 mm (3.2 in)	52 of 100 (Notable)
North Star (Wolonga)	Australia	Record daily precipitation	83.4 mm (3.3 in)	52 of 100 (Notable)
Isisford Post Office	Australia	Record daily precipitation	38.6 mm (1.5 in)	49 of 100 (Notable)
Lodi	United States	Record daily precipitation	30.5 mm (1.2 in)	49 of 100 (Notable)
Werris Creek Post Office	Australia	Record daily precipitation	29.0 mm (1.1 in)	48 of 100 (Notable)
Moola Bulla	Australia	Record daily precipitation	38.0 mm (1.5 in)	47 of 100 (Notable)
Plevna Downs	Australia	Record daily precipitation	71.0 mm (2.8 in)	47 of 100 (Notable)
Hambantota	Sri Lanka	Record high maximum temperature	34.8 C (94.6 F)	47 of 100 (Notable)
Grizzly	United States	Record daily snowfall	7.6 cm (3.0 in)	47 of 100 (Notable)
Trough	United States	Record daily precipitation	35.6 mm (1.4 in)	47 of 100 (Notable)
Port Kenny (Mount Cooper)	Australia	Record daily precipitation	50.6 mm (2.0 in)	46 of 100 (Notable)
Phitsanulok/Sarit	Thailand	Record low minimum temperature	15.5 C (59.9 F)	46 of 100 (Notable)
Napa State Hospital	United States	Record daily precipitation	29.7 mm (1.2 in)	46 of 100 (Notable)
Tambo Post Office	Australia	Record daily precipitation	63.0 mm (2.5 in)	45 of 100 (Notable)
Durrandella	Australia	Record daily precipitation	90.0 mm (3.5 in)	45 of 100 (Notable)
Inglewood Post Office	Australia	Record daily precipitation	39.2 mm (1.5 in)	45 of 100 (Notable)
Graman (Ulupna)	Australia	Record daily precipitation	68.0 mm (2.7 in)	45 of 100 (Notable)
Tenterden (Balook)	Australia	Record daily precipitation	54.0 mm (2.1 in)	45 of 100 (Notable)
Hua Hin	Thailand	Record low minimum temperature	17.9 C (64.2 F)	45 of 100 (Notable)
Paradise	United States	Record high maximum temperature	25.6 C (78.1 F)	45 of 100 (Notable)
Canyon Dam	United States	Record daily snowfall	53.3 cm (21.0 in)	45 of 100 (Notable)
Bangkok Metropolis	Thailand	Record low minimum temperature	17.6 C (63.7 F)	44 of 100 (Notable)
Mt Shasta	United States	Record daily snowfall	42.9 cm (16.9 in)	44 of 100 (Notable)
Philo 3 SW	United States	Record high minimum temperature	15.0 C (59.0 F)	44 of 100 (Notable)
Memphis	United States	Record high maximum temperature	35.0 C (95.0 F)	43 of 100 (Notable)
Brookstead Post Office	Australia	Record daily precipitation	53.8 mm (2.1 in)	42 of 100 (Notable)
Bundarra (Bimbadeen)	Australia	Record daily precipitation	45.0 mm (1.8 in)	42 of 100 (Notable)
Sanya	China	Record low maximum temperature	17.7 C (63.9 F)	42 of 100 (Notable)
Suphan Buri	Thailand	Record low minimum temperature	16.6 C (61.9 F)	42 of 100 (Notable)
Berea College	United States	Record high minimum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Hendersonville 1 NE	United States	Record high maximum temperature	28.3 C (82.9 F)	42 of 100 (Notable)
Clarendon	United States	Record high maximum temperature	35.0 C (95.0 F)	42 of 100 (Notable)
Perola Park	Australia	Record daily precipitation	73.0 mm (2.9 in)	41 of 100 (Notable)
Downieville	United States	Record daily precipitation	57.9 mm (2.3 in)	41 of 100 (Notable)
Quincy	United States	Record low maximum temperature	1.7 C (35.1 F)	41 of 100 (Notable)
Wamsutter	United States	Record high minimum temperature	1.1 C (34.0 F)	41 of 100 (Notable)
Newark Liberty Intl AP	United States	Record high minimum temperature	10.0 C (50.0 F)	41 of 100 (Notable)
Thornleigh	Australia	Record daily precipitation	63.0 mm (2.5 in)	40 of 100 (Notable)
Bogarella	Australia	Record daily precipitation	40.0 mm (1.6 in)	40 of 100 (Notable)
Lop Buri	Thailand	Record low minimum temperature	17.8 C (64.0 F)	40 of 100 (Notable)
Don Muang	Thailand	Record low minimum temperature	18.0 C (64.4 F)	40 of 100 (Notable)
Mt Shasta	United States	Record daily precipitation	61.2 mm (2.4 in)	40 of 100 (Notable)
Carlinville	United States	Record high maximum temperature	26.1 C (79.0 F)	40 of 100 (Notable)
Cooperstown	United States	Record high minimum temperature	5.0 C (41.0 F)	40 of 100 (Notable)
Crosbyton	United States	Record high maximum temperature	34.4 C (93.9 F)	40 of 100 (Notable)
Nakhon Sawan	Thailand	Record low minimum temperature	16.0 C (60.8 F)	39 of 100 (Notable)
Chon Buri	Thailand	Record low minimum temperature	18.6 C (65.5 F)	39 of 100 (Notable)
Ft Sumner	United States	Record high maximum temperature	30.0 C (86.0 F)	39 of 100 (Notable)
Wando Vale Station	Australia	Record daily precipitation	39.1 mm (1.5 in)	38 of 100 (Notable)
Cecil Plains Homestead	Australia	Record daily precipitation	28.0 mm (1.1 in)	38 of 100 (Notable)
Phoenixville 1 E	United States	Record high minimum temperature	10.6 C (51.1 F)	38 of 100 (Notable)
Windorah Post Office	Australia	Record daily precipitation	55.0 mm (2.2 in)	37 of 100 (Notable)
Simao	China	Record low maximum temperature	15.9 C (60.6 F)	37 of 100 (Notable)
Kanchanaburi	Thailand	Record low minimum temperature	15.5 C (59.9 F)	37 of 100 (Notable)

Counts by Type and Timescale

993 records

Records set or tied on 18 March 2011 by type: Highest daily maximum 354, Lowest daily maximum 95, Highest daily minimum 216, Lowest daily minimum 102, Heaviest daily rainfall 200, Heaviest daily snowfall 9, Deepest snow cover 17.

Records on 18 March 2011 by type
Record type	Records
Highest daily maximum	354
Lowest daily maximum	95
Highest daily minimum	216
Lowest daily minimum	102
Heaviest daily rainfall	200
Heaviest daily snowfall	9
Deepest snow cover	17

Records on 18 March 2011 by timescale: all-time 0, monthly 13, daily 980.

How Much Records Were Beaten By

776 broken records

Margins by which the 776 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 711.0. Ties are not counted.

Top 20 by Significance

18 March 2011

Top 20 records on 18 March 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 March 2011	Glen Royal, AU	daily rain	94.0 mm (3.7 in)	66.1 mm (2.6 in)	72 years	68 of 100 (Major)
18 March 2011	Port Augusta (Carriewerloo STN, AU	daily rain	30.0 mm (1.2 in)	25.7 mm (1.0 in)	100 years	62 of 100 (Major)
18 March 2011	Wishek, US	daily snow depth	106.7 cm (42.0 in)	71.1 cm (28.0 in)	41 years	62 of 100 (Major)
18 March 2011	Mount Irving, AU	daily rain	53.0 mm (2.1 in)	32.7 mm (1.3 in)	98 years	61 of 100 (Major)
18 March 2011	Gillespie, AU	daily rain	75.0 mm (3.0 in)	52.1 mm (2.1 in)	56 years	57 of 100 (Notable)
18 March 2011	Havelock, AU	daily rain	78.8 mm (3.1 in)	60.6 mm (2.4 in)	36 years	53 of 100 (Notable)
18 March 2011	Carina Downs, AU	daily rain	81.2 mm (3.2 in)	66.2 mm (2.6 in)	28 years	52 of 100 (Notable)
18 March 2011	North Star (Wolonga), AU	daily rain	83.4 mm (3.3 in)	62.4 mm (2.5 in)	28 years	52 of 100 (Notable)
18 March 2011	Isisford Post Office, AU	daily rain	38.6 mm (1.5 in)	16.8 mm (0.7 in)	123 years	49 of 100 (Notable)
18 March 2011	Lodi, US	daily rain	30.5 mm (1.2 in)	8.4 mm (0.33 in)	105 years	49 of 100 (Notable)
18 March 2011	Werris Creek Post Office, AU	daily rain	29.0 mm (1.1 in)	14.3 mm (0.6 in)	98 years	48 of 100 (Notable)
18 March 2011	Moola Bulla, AU	daily rain	38.0 mm (1.5 in)	13.1 mm (0.5 in)	104 years	47 of 100 (Notable)
18 March 2011	Plevna Downs, AU	daily rain	71.0 mm (2.8 in)	68.5 mm (2.7 in)	22 years	47 of 100 (Notable)
18 March 2011	Hambantota, LK	daily high max	34.8 C (94.6 F)	0.8 C (1.4 F)	108 years	47 of 100 (Notable)
18 March 2011	Grizzly, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	74 years	47 of 100 (Notable)
18 March 2011	Trough, US	daily rain	35.6 mm (1.4 in)	25.4 mm (1.0 in)	16 years	47 of 100 (Notable)
18 March 2011	Port Kenny (Mount Cooper), AU	daily rain	50.6 mm (2.0 in)	23.7 mm (0.9 in)	37 years	46 of 100 (Notable)
18 March 2011	Phitsanulok/Sarit, TH	daily low min	15.5 C (59.9 F)	5.0 C (9.0 F)	58 years	46 of 100 (Notable)
18 March 2011	Napa State Hospital, US	daily rain	29.7 mm (1.2 in)	6.6 mm (0.26 in)	106 years	46 of 100 (Notable)
18 March 2011	Tambo Post Office, AU	daily rain	63.0 mm (2.5 in)	31.0 mm (1.2 in)	56 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

1806 to 2011

Records set or tied on this calendar date in each year from 1806 to 2011. 2011 had 993 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 2011-03-18: 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 100	771
100 to 200	3
200 to 300	1
300 to 400	0
400 to 500	0
500 to 600	0
600 to 700	0
700 to 800	1