Weather Records on 30 March 1940

466 weather records were set or tied worldwide on 30 March 1940. Highest significance: Davis 2 WSW Exp Farm, US.

Key Facts for 30 March 1940

On 30 March 1940, 466 weather records were set or tied at long-record stations worldwide.
209 were record highs and 22 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 12 monthly and 453 daily.
Davis 2 WSW Exp Farm set a daily record precipitation of 50.3 mm (2.0 in) on 30 March 1940.
Across 162 earlier years (1796 to 2026) the same calendar date averaged 474 records.

Record Map

466 stations

466 station records on 30 March 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 March 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Davis 2 WSW Exp Farm	United States	Record daily precipitation	50.3 mm (2.0 in)	52 of 100 (Notable)
Wilkes Barre	United States	Record daily precipitation	74.2 mm (2.9 in)	51 of 100 (Notable)
Oroville Brg	United States	Record daily precipitation	58.9 mm (2.3 in)	48 of 100 (Notable)
Walnut Creek 2 ESE	United States	Record daily precipitation	46.0 mm (1.8 in)	47 of 100 (Notable)
Campsie	Canada	Record daily snowfall	12.7 cm (5.0 in)	46 of 100 (Notable)
Knights Landing	United States	Record daily precipitation	41.7 mm (1.6 in)	46 of 100 (Notable)
Oakland	United States	Record daily precipitation	82.6 mm (3.3 in)	45 of 100 (Notable)
Albany	United States	Record daily precipitation	42.9 mm (1.7 in)	45 of 100 (Notable)
Ringtown	United States	Record daily precipitation	67.1 mm (2.6 in)	45 of 100 (Notable)
West Branch	United States	Record daily precipitation	129.5 mm (5.1 in)	44 of 100 (Notable)
Norwich	United States	Record daily precipitation	45.0 mm (1.8 in)	44 of 100 (Notable)
Deniliquin (Wilkinson St)	Australia	Record high minimum temperature	26.7 C (80.1 F)	43 of 100 (Notable)
Berkeley	United States	Record daily precipitation	64.5 mm (2.5 in)	43 of 100 (Notable)
Rio Vista	United States	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
San Jose	United States	Record daily precipitation	34.8 mm (1.4 in)	42 of 100 (Notable)
Santa Clara UNIV	United States	Record daily precipitation	45.7 mm (1.8 in)	42 of 100 (Notable)
Ironton	United States	Record daily precipitation	52.8 mm (2.1 in)	42 of 100 (Notable)
Lake Spaulding	United States	Record daily precipitation	111.8 mm (4.4 in)	40 of 100 (Notable)
Towanda 1 S	United States	Record daily precipitation	40.6 mm (1.6 in)	40 of 100 (Notable)
Carthage	United States	Record daily precipitation	82.3 mm (3.2 in)	39 of 100 (Notable)
Rock Island 2 NW	United States	Record daily precipitation	84.3 mm (3.3 in)	39 of 100 (Notable)
Morgantown 1	United States	Record daily precipitation	40.6 mm (1.6 in)	39 of 100 (Notable)
Melbourne Regional Office	Australia	Record high maximum temperature	35.9 C (96.6 F)	38 of 100 (Notable)
Napa State Hospital	United States	Record daily precipitation	83.3 mm (3.3 in)	38 of 100 (Notable)
Jamestown State Hosp	United States	Record snow depth	20.3 cm (8.0 in)	38 of 100 (Notable)
Melbourne Regional Office	Australia	Record high minimum temperature	20.3 C (68.5 F)	37 of 100 (Notable)
Walsingham 1	South Africa	Record daily precipitation	33.0 mm (1.3 in)	37 of 100 (Notable)
Harrisburg River Gage	United States	Record daily precipitation	41.7 mm (1.6 in)	37 of 100 (Notable)
Uniontown 1 NE	United States	Record daily precipitation	49.5 mm (1.9 in)	37 of 100 (Notable)
Livermore	United States	Record daily precipitation	34.3 mm (1.4 in)	36 of 100 (Notable)
Rocklin	United States	Record daily precipitation	42.2 mm (1.7 in)	36 of 100 (Notable)
Oroville 1 N	United States	Record daily precipitation	57.2 mm (2.3 in)	34 of 100 (Routine)
Winchendon	United States	Record daily precipitation	34.8 mm (1.4 in)	34 of 100 (Routine)
Mannington 1 N	United States	Record daily precipitation	37.1 mm (1.5 in)	34 of 100 (Routine)
Point Pleasant	United States	Record daily precipitation	34.8 mm (1.4 in)	34 of 100 (Routine)
Boras	Sweden	Record low minimum temperature	-19.5 C (-3.1 F)	33 of 100 (Routine)
Los Gatos	United States	Record daily precipitation	64.0 mm (2.5 in)	33 of 100 (Routine)
Berea College	United States	Record daily precipitation	57.4 mm (2.3 in)	33 of 100 (Routine)
Centre Hall	United States	Record daily precipitation	40.9 mm (1.6 in)	33 of 100 (Routine)
Harrisburg - Coop	United States	Record daily precipitation	37.8 mm (1.5 in)	33 of 100 (Routine)
State College	United States	Record daily precipitation	51.8 mm (2.0 in)	33 of 100 (Routine)
Dobbins Colgate Foreba	United States	Record daily precipitation	91.9 mm (3.6 in)	32 of 100 (Routine)
Saint Helena	United States	Record daily precipitation	78.5 mm (3.1 in)	32 of 100 (Routine)
Greensburg 2 S	United States	Record daily precipitation	44.5 mm (1.8 in)	32 of 100 (Routine)
Tallahassee	United States	Record daily precipitation	45.7 mm (1.8 in)	31 of 100 (Routine)
Huntington 1	United States	Record daily precipitation	33.3 mm (1.3 in)	31 of 100 (Routine)
Lexington Bluegrass AP	United States	Record daily precipitation	51.3 mm (2.0 in)	31 of 100 (Routine)
Santa Cruz	United States	Record daily precipitation	105.7 mm (4.2 in)	30 of 100 (Routine)
Oneonta 1 S	United States	Record daily precipitation	30.7 mm (1.2 in)	30 of 100 (Routine)
Grass Valley	United States	Record daily precipitation	121.7 mm (4.8 in)	29 of 100 (Routine)
Bainbridge	United States	Record daily precipitation	50.8 mm (2.0 in)	29 of 100 (Routine)
Jeffersonville	United States	Record daily precipitation	40.6 mm (1.6 in)	29 of 100 (Routine)
Ryan	United States	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)
Bathurst Gaol	Australia	Record high maximum temperature	33.3 C (91.9 F)	28 of 100 (Routine)
Vestervig	Denmark	Record low minimum temperature	-9.2 C (15.4 F)	28 of 100 (Routine)
Kentfield	United States	Record daily precipitation	87.1 mm (3.4 in)	28 of 100 (Routine)
Newman	United States	Record daily precipitation	31.0 mm (1.2 in)	28 of 100 (Routine)
Morgan City	United States	Record daily precipitation	53.3 mm (2.1 in)	28 of 100 (Routine)
Lebanon 3 W	United States	Record daily precipitation	34.8 mm (1.4 in)	28 of 100 (Routine)
Mt Pleasant 2 W	United States	Record daily precipitation	51.3 mm (2.0 in)	27 of 100 (Routine)

Counts by Type and Timescale

466 records

Records set or tied on 30 March 1940 by type: Highest daily maximum 100, Lowest daily maximum 5, Highest daily minimum 109, Lowest daily minimum 17, Heaviest daily rainfall 220, Heaviest daily snowfall 2, Deepest snow cover 13.

Records on 30 March 1940 by type
Record type	Records
Highest daily maximum	100
Lowest daily maximum	5
Highest daily minimum	109
Lowest daily minimum	17
Heaviest daily rainfall	220
Heaviest daily snowfall	2
Deepest snow cover	13

Records on 30 March 1940 by timescale: all-time 1, monthly 12, daily 453.

How Much Records Were Beaten By

383 broken records

Margins by which the 383 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

30 March 1940

Top 20 records on 30 March 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 March 1940	Davis 2 WSW Exp Farm, US	daily rain	50.3 mm (2.0 in)	33.8 mm (1.3 in)	34 years	52 of 100 (Notable)
30 March 1940	Wilkes Barre, US	monthly rain	74.2 mm (2.9 in)	21.4 mm (0.8 in)	37 years	51 of 100 (Notable)
30 March 1940	Oroville Brg, US	daily rain	58.9 mm (2.3 in)	40.6 mm (1.6 in)	26 years	48 of 100 (Notable)
30 March 1940	Walnut Creek 2 ESE, US	daily rain	46.0 mm (1.8 in)	36.3 mm (1.4 in)	18 years	47 of 100 (Notable)
30 March 1940	Campsie, CA	daily snowfall	12.7 cm (5.0 in)	11.2 cm (4.4 in)	13 years	46 of 100 (Notable)
30 March 1940	Knights Landing, US	daily rain	41.7 mm (1.6 in)	32.3 mm (1.3 in)	26 years	46 of 100 (Notable)
30 March 1940	Oakland, US	daily rain	82.6 mm (3.3 in)	65.6 mm (2.6 in)	4 years	45 of 100 (Notable)
30 March 1940	Albany, US	daily rain	42.9 mm (1.7 in)	24.6 mm (1.0 in)	29 years	45 of 100 (Notable)
30 March 1940	Ringtown, US	daily rain	67.1 mm (2.6 in)	40.4 mm (1.6 in)	12 years	45 of 100 (Notable)
30 March 1940	West Branch, US	daily rain	129.5 mm (5.1 in)	101.3 mm (4.0 in)	4 years	44 of 100 (Notable)
30 March 1940	Norwich, US	daily rain	45.0 mm (1.8 in)	30.5 mm (1.2 in)	5 years	44 of 100 (Notable)
30 March 1940	Deniliquin (Wilkinson St), AU	daily high min	26.7 C (80.1 F)	8.9 C (16.0 F)	52 years	43 of 100 (Notable)
30 March 1940	Berkeley, US	daily rain	64.5 mm (2.5 in)	33.8 mm (1.3 in)	34 years	43 of 100 (Notable)
30 March 1940	Rio Vista, US	daily rain	44.5 mm (1.8 in)	26.7 mm (1.1 in)	37 years	43 of 100 (Notable)
30 March 1940	San Jose, US	daily rain	34.8 mm (1.4 in)	23.6 mm (0.9 in)	34 years	42 of 100 (Notable)
30 March 1940	Santa Clara UNIV, US	daily rain	45.7 mm (1.8 in)	34.5 mm (1.4 in)	4 years	42 of 100 (Notable)
30 March 1940	Ironton, US	daily rain	52.8 mm (2.1 in)	26.4 mm (1.0 in)	37 years	42 of 100 (Notable)
30 March 1940	Lake Spaulding, US	daily rain	111.8 mm (4.4 in)	62.0 mm (2.4 in)	34 years	40 of 100 (Notable)
30 March 1940	Towanda 1 S, US	daily rain	40.6 mm (1.6 in)	23.1 mm (0.9 in)	18 years	40 of 100 (Notable)
30 March 1940	Carthage, US	daily rain	82.3 mm (3.2 in)	39.1 mm (1.5 in)	26 years	39 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

1796 to 1940

Records set or tied on this calendar date in each year from 1796 to 1940. 1940 had 466 records.

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

Records on 03-30 in each year
Year	Records
1796	1
1805	1
1808	1
1815	1
1822	1
1830	2
1834	1
1840	1
1842	1
1847	1
1848	1
1854	1
1856	2
1859	1
1860	1
1862	1
1863	2
1865	4
1869	1
1872	6
1874	1
1881	4
1882	3
1883	2
1884	2
1885	1
1886	1
1887	5
1888	2
1890	4
1892	4
1894	2
1896	3
1897	1
1898	5
1899	2
1900	5
1901	6
1902	9
1903	8
1904	14
1905	35
1906	9
1907	28
1908	12
1909	18
1910	68
1911	45
1912	25
1913	31
1914	20
1915	78
1916	19
1917	248
1918	29
1919	42
1920	20
1921	32
1922	89
1923	229
1924	215
1925	90
1926	273
1927	80
1928	209
1929	99
1930	215
1931	254
1932	198
1933	382
1934	236
1935	187
1936	881
1937	262
1938	690
1939	305
1940	466
1941	438
1942	257
1943	928
1944	823
1945	676
1946	536
1947	1,000
1948	363
1949	795
1950	616
1951	569
1952	265
1953	432
1954	743
1955	437
1956	500
1957	330
1958	288
1959	398
1960	431
1961	404
1962	578
1963	1,010
1964	1,420
1965	376
1966	759
1967	1,261
1968	736
1969	1,372
1970	1,040
1971	490
1972	384
1973	1,089
1974	895
1975	1,255
1976	619
1977	1,627
1978	1,017
1979	753
1980	762
1981	898
1982	764
1983	624
1984	756
1985	1,331
1986	1,533
1987	1,850
1988	635
1989	1,063
1990	897
1991	821
1992	611
1993	712
1994	767
1995	920
1996	781
1997	911
1998	2,464
1999	708
2000	631
2001	840
2002	878
2003	1,472
2004	1,298
2005	683
2006	689
2007	1,265
2008	1,100
2009	750
2010	933
2011	670
2012	743
2013	691
2014	776
2015	1,194
2016	596
2017	1,267
2018	433
2019	662
2020	464
2021	1,013
2022	576
2023	1,107
2024	431
2025	956
2026	1,210

Download the Data

Data for records on 1940-03-30: 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 50	370
50 to 100	7
100 to 150	5
150 to 200	0
200 to 250	1