Weather Records on 30 April 1938

282 weather records were set or tied worldwide on 30 April 1938. Highest significance: Mangalore, IN.

Key Facts for 30 April 1938

On 30 April 1938, 282 weather records were set or tied at long-record stations worldwide.
153 were record highs and 45 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 266 daily.
Mangalore set a daily record precipitation of 59.7 mm (2.4 in) on 30 April 1938.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 448 records.

Record Map

282 stations

282 station records on 30 April 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 April 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mangalore	India	Record daily precipitation	59.7 mm (2.4 in)	43 of 100 (Notable)
Tenkasi	India	Record daily precipitation	57.2 mm (2.3 in)	36 of 100 (Notable)
Arnsberg	Germany	Record snow depth	10.0 cm (3.9 in)	35 of 100 (Notable)
Arukutty	India	Record daily precipitation	117.3 mm (4.6 in)	34 of 100 (Routine)
Uccle	Belgium	Record low minimum temperature	-1.6 C (29.1 F)	33 of 100 (Routine)
Lexington 3E	United States	Record daily precipitation	62.0 mm (2.4 in)	29 of 100 (Routine)
Fredericton Unb	Canada	Record low maximum temperature	3.3 C (37.9 F)	26 of 100 (Routine)
Hamburg Fuhlsbuettel	Germany	Record low minimum temperature	-2.5 C (27.5 F)	26 of 100 (Routine)
Irikkur	India	Record daily precipitation	45.7 mm (1.8 in)	26 of 100 (Routine)
Newman	United States	Record low maximum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Altastenberg	Germany	Record snow depth	30.0 cm (11.8 in)	25 of 100 (Routine)
Masset Airport	Canada	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Lovelock	United States	Record daily precipitation	25.4 mm (1.0 in)	23 of 100 (Routine)
Tezpur	India	Record daily precipitation	53.8 mm (2.1 in)	22 of 100 (Routine)
Sacramento 5 ESE	United States	Record low maximum temperature	12.2 C (54.0 F)	22 of 100 (Routine)
Kamalpur	India	Record daily precipitation	43.7 mm (1.7 in)	21 of 100 (Routine)
Srirangpatnam	India	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Cambridge	United States	Record high minimum temperature	11.1 C (52.0 F)	21 of 100 (Routine)
Syktyvkar	Russia	Record daily precipitation	17.2 mm (0.7 in)	20 of 100 (Routine)
Fallon Exp STN	United States	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Niznij Novgorod	Russia	Record daily precipitation	21.4 mm (0.8 in)	20 of 100 (Routine)
Mahackala	Russia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Oakland	United States	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Paso Robles	United States	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Berkeley	United States	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Soldier Creek Adm Site	United States	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Willcox	United States	Record daily precipitation	4.1 mm (0.16 in)	20 of 100 (Routine)
Meilman	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Shirala	India	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Santa Clara UNIV	United States	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Port Arthur	Canada	Record high maximum temperature	18.3 C (64.9 F)	20 of 100 (Routine)
Tortosa - Observatorio del Ebr	Spain	Record daily precipitation	25.0 mm (1.0 in)	20 of 100 (Routine)
Marysville	United States	Record low maximum temperature	12.2 C (54.0 F)	20 of 100 (Routine)
Kingfisher	United States	Record high minimum temperature	24.4 C (75.9 F)	20 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record high minimum temperature	10.0 C (50.0 F)	20 of 100 (Routine)
Sacramento 5 ESE	United States	Record daily precipitation	6.1 mm (0.24 in)	20 of 100 (Routine)
Deols Chateauroux Aerodrome de	France	Record low minimum temperature	0.0 C (32.0 F)	19 of 100 (Routine)
Husum	Germany	Record low minimum temperature	-1.3 C (29.7 F)	19 of 100 (Routine)
Kumta	India	Record daily precipitation	8.9 mm (0.35 in)	19 of 100 (Routine)
Udipi	India	Record daily precipitation	30.0 mm (1.2 in)	19 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record high minimum temperature	20.2 C (68.4 F)	19 of 100 (Routine)
Oroville 1 N	United States	Record low maximum temperature	12.8 C (55.0 F)	19 of 100 (Routine)
Vacaville	United States	Record daily precipitation	10.9 mm (0.4 in)	19 of 100 (Routine)
Westcliffe	United States	Record high maximum temperature	22.8 C (73.0 F)	19 of 100 (Routine)
Warsaw 1	United States	Record daily precipitation	45.7 mm (1.8 in)	19 of 100 (Routine)
Blair	United States	Record high minimum temperature	21.7 C (71.1 F)	19 of 100 (Routine)
Stuttgart	United States	Record high maximum temperature	31.7 C (89.1 F)	18 of 100 (Routine)
Steamboat Springs	United States	Record high maximum temperature	25.0 C (77.0 F)	18 of 100 (Routine)
Tallahassee	United States	Record high maximum temperature	34.4 C (93.9 F)	18 of 100 (Routine)
Baton Rouge	United States	Record high minimum temperature	22.8 C (73.0 F)	18 of 100 (Routine)
Missoula 6 NW WFO	United States	Record high maximum temperature	27.2 C (81.0 F)	18 of 100 (Routine)
Ovando	United States	Record high maximum temperature	26.7 C (80.1 F)	18 of 100 (Routine)
Escalante	United States	Record daily precipitation	10.4 mm (0.4 in)	18 of 100 (Routine)
Green Rvr	United States	Record high minimum temperature	6.7 C (44.1 F)	18 of 100 (Routine)
Luz (Estacao)	Brazil	Record daily precipitation	25.4 mm (1.0 in)	17 of 100 (Routine)
Poonampet	India	Record daily precipitation	15.2 mm (0.6 in)	17 of 100 (Routine)
Vrugbaar	South Africa	Record daily precipitation	20.1 mm (0.8 in)	17 of 100 (Routine)
Harrison	United States	Record high minimum temperature	18.3 C (64.9 F)	17 of 100 (Routine)
Hollister 1 SW	United States	Record daily precipitation	18.8 mm (0.7 in)	17 of 100 (Routine)
Napa State Hospital	United States	Record daily precipitation	11.9 mm (0.5 in)	17 of 100 (Routine)

Counts by Type and Timescale

282 records

Records set or tied on 30 April 1938 by type: Highest daily maximum 86, Lowest daily maximum 36, Highest daily minimum 67, Lowest daily minimum 9, Heaviest daily rainfall 82, Deepest snow cover 2.

Records on 30 April 1938 by type
Record type	Records
Highest daily maximum	86
Lowest daily maximum	36
Highest daily minimum	67
Lowest daily minimum	9
Heaviest daily rainfall	82
Heaviest daily snowfall	0
Deepest snow cover	2

Records on 30 April 1938 by timescale: all-time 0, monthly 16, daily 266.

How Much Records Were Beaten By

218 broken records

Margins by which the 218 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 240.0. Ties are not counted.

Top 20 by Significance

30 April 1938

Top 20 records on 30 April 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 1938	Mangalore, IN	daily rain	59.7 mm (2.4 in)	52.3 mm (2.1 in)	8 years	43 of 100 (Notable)
30 April 1938	Tenkasi, IN	daily rain	57.2 mm (2.3 in)	31.3 mm (1.2 in)	32 years	36 of 100 (Notable)
30 April 1938	Arnsberg, DE	daily snow depth	10.0 cm (3.9 in)	10.0 cm (3.9 in)	57 years	35 of 100 (Notable)
30 April 1938	Arukutty, IN	daily rain	117.3 mm (4.6 in)	65.2 mm (2.6 in)	8 years	34 of 100 (Routine)
30 April 1938	Uccle, BE	daily low min	-1.6 C (29.1 F)	0.8 C (1.4 F)	72 years	33 of 100 (Routine)
30 April 1938	Lexington 3E, US	monthly rain	62.0 mm (2.4 in)	9.7 mm (0.38 in)	21 years	29 of 100 (Routine)
30 April 1938	Fredericton Unb, CA	daily low max	3.3 C (37.9 F)	1.1 C (2.0 F)	61 years	26 of 100 (Routine)
30 April 1938	Hamburg Fuhlsbuettel, DE	daily low min	-2.5 C (27.5 F)	2.9 C (5.2 F)	45 years	26 of 100 (Routine)
30 April 1938	Irikkur, IN	daily rain	45.7 mm (1.8 in)	21.1 mm (0.8 in)	33 years	26 of 100 (Routine)
30 April 1938	Newman, US	daily low max	13.9 C (57.0 F)	6.7 C (12.1 F)	24 years	26 of 100 (Routine)
30 April 1938	Altastenberg, DE	daily snow depth	30.0 cm (11.8 in)	24.0 cm (9.4 in)	19 years	25 of 100 (Routine)
30 April 1938	Masset Airport, CA	daily rain	30.5 mm (1.2 in)	13.5 mm (0.5 in)	4 years	24 of 100 (Routine)
30 April 1938	Lovelock, US	monthly rain	25.4 mm (1.0 in)	4.3 mm (0.17 in)	0 years	23 of 100 (Routine)
30 April 1938	Tezpur, IN	daily rain	53.8 mm (2.1 in)	11.9 mm (0.5 in)	33 years	22 of 100 (Routine)
30 April 1938	Sacramento 5 ESE, US	daily low max	12.2 C (54.0 F)	2.2 C (4.0 F)	38 years	22 of 100 (Routine)
30 April 1938	Kamalpur, IN	daily rain	43.7 mm (1.7 in)	11.9 mm (0.5 in)	33 years	21 of 100 (Routine)
30 April 1938	Srirangpatnam, IN	daily rain	27.9 mm (1.1 in)	17.5 mm (0.7 in)	3 years	21 of 100 (Routine)
30 April 1938	Cambridge, US	daily high min	11.1 C (52.0 F)	2.2 C (4.0 F)	37 years	21 of 100 (Routine)
30 April 1938	Syktyvkar, RU	daily rain	17.2 mm (0.7 in)	11.0 mm (0.4 in)	29 years	20 of 100 (Routine)
30 April 1938	Fallon Exp STN, US	daily rain	21.1 mm (0.8 in)	17.5 mm (0.7 in)	23 years	20 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

1795 to 1938

Records set or tied on this calendar date in each year from 1795 to 1938. 1938 had 282 records.

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

Records on 04-30 in each year
Year	Records
1795	1
1804	1
1809	1
1812	1
1814	2
1833	1
1840	1
1848	1
1850	1
1853	1
1854	1
1856	1
1859	1
1862	1
1864	1
1865	1
1866	3
1872	1
1873	1
1874	2
1876	1
1878	4
1879	2
1880	1
1881	1
1882	1
1884	1
1885	1
1886	5
1888	1
1889	1
1891	5
1892	7
1894	1
1895	5
1896	3
1897	2
1898	6
1899	11
1900	4
1901	8
1902	13
1903	21
1904	11
1905	9
1906	16
1907	35
1908	28
1909	74
1910	17
1911	19
1912	18
1913	62
1914	8
1915	20
1916	21
1917	25
1918	28
1919	130
1920	70
1921	54
1922	138
1923	42
1924	96
1925	210
1926	331
1927	127
1928	130
1929	119
1930	232
1931	548
1932	145
1933	422
1934	443
1935	327
1936	373
1937	228
1938	282
1939	268
1940	526
1941	484
1942	1,163
1943	470
1944	286
1945	314
1946	301
1947	330
1948	912
1949	447
1950	671
1951	783
1952	435
1953	635
1954	1,224
1955	1,252
1956	908
1957	401
1958	482
1959	575
1960	507
1961	381
1962	617
1963	730
1964	339
1965	488
1966	740
1967	914
1968	928
1969	587
1970	1,189
1971	365
1972	497
1973	398
1974	822
1975	468
1976	783
1977	525
1978	631
1979	675
1980	545
1981	1,342
1982	504
1983	1,154
1984	1,519
1985	650
1986	660
1987	1,437
1988	808
1989	674
1990	977
1991	828
1992	1,808
1993	765
1994	1,499
1995	1,007
1996	1,637
1997	764
1998	857
1999	1,012
2000	1,046
2001	900
2002	1,171
2003	927
2004	703
2005	1,113
2006	778
2007	996
2008	1,260
2009	660
2010	921
2011	636
2012	819
2013	732
2014	946
2015	380
2016	969
2017	1,450
2018	708
2019	700
2020	1,476
2021	1,167
2022	499
2023	782
2024	705
2025	489
2026	365

Download the Data

Data for records on 1938-04-30: 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	214
50 to 100	2
100 to 150	1
150 to 200	0
200 to 250	1