Weather Records on 15 April 1938

596 weather records were set or tied worldwide on 15 April 1938. Highest significance: Clanwilliam (Pol), ZA.

Key Facts for 15 April 1938

On 15 April 1938, 596 weather records were set or tied at long-record stations worldwide.
399 were record highs and 19 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 590 daily.
Clanwilliam (Pol) set a daily record precipitation of 25.9 mm (1.0 in) on 15 April 1938.
Across 159 earlier years (1801 to 2026) the same calendar date averaged 492 records.

Record Map

596 stations

596 station records on 15 April 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 April 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Clanwilliam (Pol)	South Africa	Record daily precipitation	25.9 mm (1.0 in)	59 of 100 (Notable)
Newport	United States	Record daily precipitation	61.0 mm (2.4 in)	52 of 100 (Notable)
Gayndah Post Office	Australia	Record daily precipitation	62.7 mm (2.5 in)	51 of 100 (Notable)
St Ignace	United States	Record daily precipitation	44.2 mm (1.7 in)	48 of 100 (Notable)
Rosedale	Australia	Record daily precipitation	26.2 mm (1.0 in)	46 of 100 (Notable)
Aberdeen	United States	Record daily precipitation	63.0 mm (2.5 in)	46 of 100 (Notable)
Peak Downs	Australia	Record daily precipitation	40.6 mm (1.6 in)	45 of 100 (Notable)
Hancock Exp Farm	United States	Record daily precipitation	52.1 mm (2.1 in)	45 of 100 (Notable)
Meadow Valley Rs	United States	Record daily precipitation	34.3 mm (1.4 in)	45 of 100 (Notable)
Wheatland 4N	United States	Record daily precipitation	46.2 mm (1.8 in)	41 of 100 (Notable)
Tonteldoos	South Africa	Record daily precipitation	32.5 mm (1.3 in)	40 of 100 (Notable)
Lusk 2 SW	United States	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Mintaro	Australia	Record daily precipitation	25.4 mm (1.0 in)	39 of 100 (Notable)
Waxahachie	United States	Record daily precipitation	83.8 mm (3.3 in)	39 of 100 (Notable)
Cheesman	United States	Record daily precipitation	38.4 mm (1.5 in)	37 of 100 (Notable)
Pine River 3 NE	United States	Record daily precipitation	43.2 mm (1.7 in)	37 of 100 (Notable)
Vrugbaar	South Africa	Record daily precipitation	40.6 mm (1.6 in)	36 of 100 (Notable)
Grand River Lock	United States	Record daily precipitation	25.4 mm (1.0 in)	36 of 100 (Notable)
Leyburn Post Office	Australia	Record daily precipitation	38.9 mm (1.5 in)	35 of 100 (Notable)
Mackinaw City 2	United States	Record daily precipitation	27.2 mm (1.1 in)	35 of 100 (Notable)
Royal Observatory	South Africa	Record daily precipitation	37.6 mm (1.5 in)	34 of 100 (Routine)
Stratford	Canada	Record high minimum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
Ridgetown	Canada	Record high minimum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Cape Town Fire Station	South Africa	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Rawsonville (Pol)	South Africa	Record daily precipitation	31.8 mm (1.3 in)	30 of 100 (Routine)
Laramie	United States	Record daily precipitation	32.8 mm (1.3 in)	30 of 100 (Routine)
Atlantic City Marina	United States	Record high maximum temperature	28.9 C (84.0 F)	30 of 100 (Routine)
Rosedale Post Office	Australia	Record daily precipitation	71.1 mm (2.8 in)	29 of 100 (Routine)
Fort Simpson	Canada	Record daily snowfall	15.2 cm (6.0 in)	29 of 100 (Routine)
Guelph Oac	Canada	Record high minimum temperature	12.8 C (55.0 F)	29 of 100 (Routine)
Miles Post Office	Australia	Record daily precipitation	27.4 mm (1.1 in)	28 of 100 (Routine)
Rochford 2 WNW	United States	Record daily precipitation	31.2 mm (1.2 in)	28 of 100 (Routine)
Brantford	Canada	Record high minimum temperature	12.2 C (54.0 F)	27 of 100 (Routine)
Walnut	United States	Record high minimum temperature	20.0 C (68.0 F)	27 of 100 (Routine)
Butte	United States	Record daily precipitation	35.1 mm (1.4 in)	27 of 100 (Routine)
Ft Robinson	United States	Record daily precipitation	37.6 mm (1.5 in)	27 of 100 (Routine)
Jamestown	United States	Record high minimum temperature	13.3 C (55.9 F)	27 of 100 (Routine)
Hillsboro	United States	Record daily precipitation	61.0 mm (2.4 in)	27 of 100 (Routine)
Newark Liberty Intl AP	United States	Record high maximum temperature	28.9 C (84.0 F)	27 of 100 (Routine)
Bungunya School	Australia	Record daily precipitation	35.1 mm (1.4 in)	26 of 100 (Routine)
Pembroke Eddy Match	Canada	Record high minimum temperature	6.1 C (43.0 F)	26 of 100 (Routine)
Wallaceburg	Canada	Record high minimum temperature	12.8 C (55.0 F)	26 of 100 (Routine)
Mackinac Island	United States	Record daily precipitation	41.9 mm (1.6 in)	26 of 100 (Routine)
Gloversville	United States	Record high minimum temperature	12.2 C (54.0 F)	26 of 100 (Routine)
Cape Town Maitland (Cem)	South Africa	Record daily precipitation	32.3 mm (1.3 in)	25 of 100 (Routine)
Snowflake	United States	Record daily snowfall	5.1 cm (2.0 in)	25 of 100 (Routine)
Pontiac Wwtp	United States	Record high minimum temperature	13.9 C (57.0 F)	25 of 100 (Routine)
Crows Nest	Australia	Record daily precipitation	32.5 mm (1.3 in)	24 of 100 (Routine)
Walgett Council Depot	Australia	Record high maximum temperature	32.2 C (90.0 F)	24 of 100 (Routine)
Silverton	United States	Record daily snowfall	25.4 cm (10.0 in)	24 of 100 (Routine)
Menasha	United States	Record daily precipitation	26.2 mm (1.0 in)	24 of 100 (Routine)
Ny City Cntrl Park	United States	Record high maximum temperature	28.9 C (84.0 F)	24 of 100 (Routine)
Pacific Heights	Australia	Record daily precipitation	83.1 mm (3.3 in)	23 of 100 (Routine)
Vastervik	Sweden	Record high minimum temperature	9.0 C (48.2 F)	23 of 100 (Routine)
Howe	United States	Record high minimum temperature	15.0 C (59.0 F)	23 of 100 (Routine)
Ainsworth	United States	Record daily precipitation	38.9 mm (1.5 in)	23 of 100 (Routine)
Nashua 2 NNW	United States	Record high maximum temperature	24.4 C (75.9 F)	23 of 100 (Routine)
Lambertville River	United States	Record high minimum temperature	17.2 C (63.0 F)	23 of 100 (Routine)
Paterson	United States	Record high minimum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
World Trade Ctr	United States	Record high maximum temperature	27.2 C (81.0 F)	23 of 100 (Routine)

Counts by Type and Timescale

596 records

Records set or tied on 15 April 1938 by type: Highest daily maximum 121, Lowest daily maximum 13, Highest daily minimum 278, Lowest daily minimum 6, Heaviest daily rainfall 173, Heaviest daily snowfall 5.

Records on 15 April 1938 by type
Record type	Records
Highest daily maximum	121
Lowest daily maximum	13
Highest daily minimum	278
Lowest daily minimum	6
Heaviest daily rainfall	173
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 15 April 1938 by timescale: all-time 0, monthly 6, daily 590.

How Much Records Were Beaten By

496 broken records

Margins by which the 496 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 139.0. Ties are not counted.

Top 20 by Significance

15 April 1938

Top 20 records on 15 April 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 April 1938	Clanwilliam (Pol), ZA	daily rain	25.9 mm (1.0 in)	23.1 mm (0.9 in)	48 years	59 of 100 (Notable)
15 April 1938	Newport, US	daily rain	61.0 mm (2.4 in)	37.4 mm (1.5 in)	28 years	52 of 100 (Notable)
15 April 1938	Gayndah Post Office, AU	daily rain	62.7 mm (2.5 in)	59.4 mm (2.3 in)	17 years	51 of 100 (Notable)
15 April 1938	St Ignace, US	daily rain	44.2 mm (1.7 in)	34.0 mm (1.3 in)	15 years	48 of 100 (Notable)
15 April 1938	Rosedale, AU	daily rain	26.2 mm (1.0 in)	17.1 mm (0.7 in)	37 years	46 of 100 (Notable)
15 April 1938	Aberdeen, US	daily rain	63.0 mm (2.5 in)	48.3 mm (1.9 in)	8 years	46 of 100 (Notable)
15 April 1938	Peak Downs, AU	daily rain	40.6 mm (1.6 in)	39.6 mm (1.6 in)	33 years	45 of 100 (Notable)
15 April 1938	Hancock Exp Farm, US	daily rain	52.1 mm (2.1 in)	38.6 mm (1.5 in)	8 years	45 of 100 (Notable)
15 April 1938	Meadow Valley Rs, US	daily rain	34.3 mm (1.4 in)	24.9 mm (1.0 in)	40 years	45 of 100 (Notable)
15 April 1938	Wheatland 4N, US	daily rain	46.2 mm (1.8 in)	38.6 mm (1.5 in)	11 years	41 of 100 (Notable)
15 April 1938	Tonteldoos, ZA	daily rain	32.5 mm (1.3 in)	32.5 mm (1.3 in)	33 years	40 of 100 (Notable)
15 April 1938	Lusk 2 SW, US	daily rain	29.2 mm (1.1 in)	22.8 mm (0.9 in)	33 years	40 of 100 (Notable)
15 April 1938	Mintaro, AU	daily rain	25.4 mm (1.0 in)	15.5 mm (0.6 in)	37 years	39 of 100 (Notable)
15 April 1938	Waxahachie, US	daily rain	83.8 mm (3.3 in)	63.5 mm (2.5 in)	4 years	39 of 100 (Notable)
15 April 1938	Cheesman, US	daily rain	38.4 mm (1.5 in)	21.6 mm (0.9 in)	20 years	37 of 100 (Notable)
15 April 1938	Pine River 3 NE, US	daily rain	43.2 mm (1.7 in)	28.0 mm (1.1 in)	8 years	37 of 100 (Notable)
15 April 1938	Vrugbaar, ZA	daily rain	40.6 mm (1.6 in)	26.6 mm (1.0 in)	9 years	36 of 100 (Notable)
15 April 1938	Grand River Lock, US	daily rain	25.4 mm (1.0 in)	16.0 mm (0.6 in)	40 years	36 of 100 (Notable)
15 April 1938	Leyburn Post Office, AU	daily rain	38.9 mm (1.5 in)	21.6 mm (0.9 in)	44 years	35 of 100 (Notable)
15 April 1938	Mackinaw City 2, US	daily rain	27.2 mm (1.1 in)	21.4 mm (0.8 in)	12 years	35 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

1801 to 1938

Records set or tied on this calendar date in each year from 1801 to 1938. 1938 had 596 records.

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

Records on 04-15 in each year
Year	Records
1801	1
1817	1
1820	1
1844	1
1845	1
1847	1
1849	1
1853	2
1855	2
1858	1
1862	3
1865	3
1866	1
1868	1
1869	2
1873	1
1874	1
1876	1
1880	1
1882	1
1885	3
1886	1
1887	3
1889	2
1890	3
1891	2
1892	8
1893	2
1894	1
1896	2
1897	1
1898	2
1899	4
1900	9
1901	2
1902	4
1903	8
1904	39
1905	11
1906	20
1907	18
1908	15
1909	18
1910	16
1911	20
1912	24
1913	39
1914	17
1915	13
1916	15
1917	35
1918	40
1919	22
1920	50
1921	59
1922	94
1923	178
1924	172
1925	168
1926	453
1927	321
1928	631
1929	91
1930	289
1931	388
1932	150
1933	300
1934	339
1935	515
1936	439
1937	277
1938	596
1939	789
1940	581
1941	628
1942	525
1943	1,037
1944	313
1945	783
1946	245
1947	532
1948	306
1949	419
1950	568
1951	504
1952	357
1953	475
1954	896
1955	484
1956	750
1957	378
1958	458
1959	314
1960	319
1961	877
1962	733
1963	714
1964	382
1965	504
1966	464
1967	599
1968	476
1969	555
1970	841
1971	640
1972	896
1973	667
1974	385
1975	780
1976	1,566
1977	649
1978	426
1979	370
1980	1,066
1981	724
1982	955
1983	1,343
1984	612
1985	788
1986	1,140
1987	579
1988	839
1989	836
1990	837
1991	769
1992	783
1993	1,156
1994	835
1995	805
1996	1,173
1997	1,031
1998	1,752
1999	1,249
2000	1,163
2001	1,043
2002	1,866
2003	1,760
2004	761
2005	583
2006	1,637
2007	1,776
2008	1,157
2009	853
2010	804
2011	1,162
2012	1,007
2013	1,146
2014	1,721
2015	739
2016	602
2017	474
2018	1,913
2019	610
2020	1,068
2021	494
2022	1,145
2023	912
2024	1,096
2025	860
2026	1,118

Download the Data

Data for records on 1938-04-15: 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 20	467
20 to 40	23
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	1
120 to 140	1