Weather Records on 18 March 1946

492 weather records were set or tied worldwide on 18 March 1946. Highest significance: Penshurst (Post Office), AU.

Key Facts for 18 March 1946

On 18 March 1946, 492 weather records were set or tied at long-record stations worldwide.
158 were record highs and 29 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 6 monthly and 481 daily.
Penshurst (Post Office) set an all-time record daily precipitation of 160.3 mm (6.3 in) on 18 March 1946.
Across 160 earlier years (1806 to 2026) the same calendar date averaged 477 records.

Record Map

492 stations

492 station records on 18 March 1946 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 March 1946: highest significance records shown on the map
Station	Country	Type	Value	Significance
Penshurst (Post Office)	Australia	Record daily precipitation	160.3 mm (6.3 in)	76 of 100 (Major)
Port Fairy Post Office	Australia	Record daily precipitation	149.4 mm (5.9 in)	65 of 100 (Major)
Naracoorte	Australia	Record daily precipitation	44.2 mm (1.7 in)	63 of 100 (Major)
Penola Post Office	Australia	Record daily precipitation	51.6 mm (2.0 in)	62 of 100 (Major)
Stuart Mill State School	Australia	Record daily precipitation	40.6 mm (1.6 in)	57 of 100 (Notable)
Ararat Post Office	Australia	Record daily precipitation	52.6 mm (2.1 in)	56 of 100 (Notable)
Harrow (Post Office)	Australia	Record daily precipitation	108.0 mm (4.3 in)	53 of 100 (Notable)
Hamilton	Australia	Record daily precipitation	44.2 mm (1.7 in)	51 of 100 (Notable)
Atlantic City Marina	United States	Record daily precipitation	52.3 mm (2.1 in)	49 of 100 (Notable)
Navarre	Australia	Record daily precipitation	29.7 mm (1.2 in)	46 of 100 (Notable)
Pomborneit	Australia	Record daily precipitation	47.0 mm (1.9 in)	46 of 100 (Notable)
Frances	Australia	Record daily precipitation	34.0 mm (1.3 in)	45 of 100 (Notable)
Coleraine Hospital	Australia	Record daily precipitation	134.6 mm (5.3 in)	45 of 100 (Notable)
Terang (Sunnyside)	Australia	Record daily precipitation	75.7 mm (3.0 in)	45 of 100 (Notable)
Kettering (Saddle Road)	Australia	Record daily precipitation	66.5 mm (2.6 in)	45 of 100 (Notable)
Trawalla	Australia	Record daily precipitation	29.0 mm (1.1 in)	44 of 100 (Notable)
Hawkesdale (Post Office)	Australia	Record daily precipitation	43.4 mm (1.7 in)	43 of 100 (Notable)
Nypo	Australia	Record daily precipitation	32.3 mm (1.3 in)	42 of 100 (Notable)
Lexton	Australia	Record daily precipitation	31.8 mm (1.3 in)	38 of 100 (Notable)
Terang	Australia	Record daily precipitation	98.0 mm (3.9 in)	38 of 100 (Notable)
Avoca (Railway House)	Australia	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)
Chepstowe	Australia	Record daily precipitation	27.9 mm (1.1 in)	36 of 100 (Notable)
Yarra River (Yarra Glen)	Australia	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Tyrendarra (Ellangowan)	Australia	Record daily precipitation	33.8 mm (1.3 in)	35 of 100 (Notable)
Englesberg Village	Australia	Record daily precipitation	45.7 mm (1.8 in)	33 of 100 (Routine)
Barkly	Australia	Record daily precipitation	27.2 mm (1.1 in)	32 of 100 (Routine)
Emerson	Canada	Record high minimum temperature	-1.1 C (30.0 F)	32 of 100 (Routine)
Yackandandah	Australia	Record daily precipitation	49.0 mm (1.9 in)	31 of 100 (Routine)
Kottayam P.W.D	India	Record daily precipitation	31.2 mm (1.2 in)	31 of 100 (Routine)
Thadikarekonam	India	Record daily precipitation	76.2 mm (3.0 in)	31 of 100 (Routine)
Goroke (Post Office)	Australia	Record daily precipitation	34.8 mm (1.4 in)	30 of 100 (Routine)
Dayton Mcd	United States	Record daily precipitation	30.7 mm (1.2 in)	30 of 100 (Routine)
Wahgunyah	Australia	Record daily precipitation	37.1 mm (1.5 in)	29 of 100 (Routine)
Cobden (Post Office)	Australia	Record daily precipitation	72.6 mm (2.9 in)	29 of 100 (Routine)
Charlotte Wb City	United States	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
Bourke Post Office	Australia	Record low minimum temperature	9.4 C (48.9 F)	28 of 100 (Routine)
Corowa Airport	Australia	Record daily precipitation	35.8 mm (1.4 in)	28 of 100 (Routine)
Cressy	Australia	Record daily precipitation	26.7 mm (1.1 in)	28 of 100 (Routine)
Woolsthorpe	Australia	Record daily precipitation	27.2 mm (1.1 in)	28 of 100 (Routine)
Smithton (Grant Street)	Australia	Record daily precipitation	31.8 mm (1.3 in)	28 of 100 (Routine)
Aryankavu	India	Record daily precipitation	58.4 mm (2.3 in)	28 of 100 (Routine)
Philadelphia City	United States	Record daily precipitation	27.4 mm (1.1 in)	28 of 100 (Routine)
Mackay Post Office	Australia	Record high maximum temperature	34.4 C (93.9 F)	27 of 100 (Routine)
Forbes (Camp Street)	Australia	Record low maximum temperature	17.8 C (64.0 F)	27 of 100 (Routine)
Beechworth Composite	Australia	Record daily precipitation	31.0 mm (1.2 in)	27 of 100 (Routine)
Cape Otway Lighthouse	Australia	Record low maximum temperature	13.9 C (57.0 F)	27 of 100 (Routine)
Mossoro	Brazil	Record daily precipitation	98.0 mm (3.9 in)	27 of 100 (Routine)
North Bay	Canada	Record high maximum temperature	13.9 C (57.0 F)	27 of 100 (Routine)
Represa	United States	Record low maximum temperature	8.9 C (48.0 F)	27 of 100 (Routine)
Mount Buffalo Chalet	Australia	Record daily precipitation	61.7 mm (2.4 in)	25 of 100 (Routine)
Birregurra (Post Office)	Australia	Record daily precipitation	30.2 mm (1.2 in)	25 of 100 (Routine)
Schreiber	Canada	Record high maximum temperature	11.7 C (53.1 F)	25 of 100 (Routine)
Indian Mills 2 W	United States	Record daily precipitation	35.6 mm (1.4 in)	25 of 100 (Routine)
Lowville	United States	Record high maximum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
Yeeda	Australia	Record daily precipitation	47.0 mm (1.9 in)	24 of 100 (Routine)
Perumpavur	India	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Pechipparai	India	Record daily precipitation	39.4 mm (1.6 in)	24 of 100 (Routine)
Vacaville	United States	Record low maximum temperature	10.0 C (50.0 F)	24 of 100 (Routine)
Hart 3 WSW	United States	Record high minimum temperature	6.7 C (44.1 F)	24 of 100 (Routine)
Varzea Alegre	Brazil	Record daily precipitation	92.8 mm (3.7 in)	23 of 100 (Routine)

Counts by Type and Timescale

492 records

Records set or tied on 18 March 1946 by type: Highest daily maximum 41, Lowest daily maximum 23, Highest daily minimum 117, Lowest daily minimum 6, Heaviest daily rainfall 301, Heaviest daily snowfall 2, Deepest snow cover 2.

Records on 18 March 1946 by type
Record type	Records
Highest daily maximum	41
Lowest daily maximum	23
Highest daily minimum	117
Lowest daily minimum	6
Heaviest daily rainfall	301
Heaviest daily snowfall	2
Deepest snow cover	2

Records on 18 March 1946 by timescale: all-time 5, monthly 6, daily 481.

How Much Records Were Beaten By

438 broken records

Margins by which the 438 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 1200.0. Ties are not counted.

Top 20 by Significance

18 March 1946

Top 20 records on 18 March 1946 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 March 1946	Penshurst (Post Office), AU	all-time rain	160.3 mm (6.3 in)	89.2 mm (3.5 in)	36 years	76 of 100 (Major)
18 March 1946	Port Fairy Post Office, AU	all-time rain	149.4 mm (5.9 in)	72.7 mm (2.9 in)	5 years	65 of 100 (Major)
18 March 1946	Naracoorte, AU	daily rain	44.2 mm (1.7 in)	35.8 mm (1.4 in)	55 years	63 of 100 (Major)
18 March 1946	Penola Post Office, AU	daily rain	51.6 mm (2.0 in)	35.3 mm (1.4 in)	50 years	62 of 100 (Major)
18 March 1946	Stuart Mill State School, AU	daily rain	40.6 mm (1.6 in)	34.8 mm (1.4 in)	55 years	57 of 100 (Notable)
18 March 1946	Ararat Post Office, AU	daily rain	52.6 mm (2.1 in)	33.0 mm (1.3 in)	55 years	56 of 100 (Notable)
18 March 1946	Harrow (Post Office), AU	all-time rain	108.0 mm (4.3 in)	18.1 mm (0.7 in)	36 years	53 of 100 (Notable)
18 March 1946	Hamilton, AU	daily rain	44.2 mm (1.7 in)	36.6 mm (1.4 in)	19 years	51 of 100 (Notable)
18 March 1946	Atlantic City Marina, US	daily rain	52.3 mm (2.1 in)	24.6 mm (1.0 in)	53 years	49 of 100 (Notable)
18 March 1946	Navarre, AU	daily rain	29.7 mm (1.2 in)	27.2 mm (1.1 in)	46 years	46 of 100 (Notable)
18 March 1946	Pomborneit, AU	daily rain	47.0 mm (1.9 in)	40.6 mm (1.6 in)	11 years	46 of 100 (Notable)
18 March 1946	Frances, AU	daily rain	34.0 mm (1.3 in)	17.7 mm (0.7 in)	55 years	45 of 100 (Notable)
18 March 1946	Coleraine Hospital, AU	all-time rain	134.6 mm (5.3 in)	12.4 mm (0.5 in)	36 years	45 of 100 (Notable)
18 March 1946	Terang (Sunnyside), AU	daily rain	75.7 mm (3.0 in)	65.3 mm (2.6 in)	4 years	45 of 100 (Notable)
18 March 1946	Kettering (Saddle Road), AU	daily rain	66.5 mm (2.6 in)	51.5 mm (2.0 in)	8 years	45 of 100 (Notable)
18 March 1946	Trawalla, AU	daily rain	29.0 mm (1.1 in)	19.9 mm (0.8 in)	46 years	44 of 100 (Notable)
18 March 1946	Hawkesdale (Post Office), AU	daily rain	43.4 mm (1.7 in)	18.8 mm (0.7 in)	46 years	43 of 100 (Notable)
18 March 1946	Nypo, AU	daily rain	32.3 mm (1.3 in)	26.7 mm (1.1 in)	9 years	42 of 100 (Notable)
18 March 1946	Lexton, AU	daily rain	31.8 mm (1.3 in)	22.4 mm (0.9 in)	36 years	38 of 100 (Notable)
18 March 1946	Terang, AU	all-time rain	98.0 mm (3.9 in)	7.6 mm (0.30 in)	9 years	38 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 1946

Records set or tied on this calendar date in each year from 1806 to 1946. 1946 had 492 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 1946-03-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 200	437
200 to 400	0
400 to 600	0
600 to 800	0
800 to 1000	0
1000 to 1200	1