Weather Records on 18 April 1949

345 weather records were set or tied worldwide on 18 April 1949. Highest significance: Port Jervis, US.

Key Facts for 18 April 1949

On 18 April 1949, 345 weather records were set or tied at long-record stations worldwide.
125 were record highs and 111 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 328 daily.
Port Jervis set a daily record precipitation of 63.5 mm (2.5 in) on 18 April 1949.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 468 records.

Record Map

345 stations

345 station records on 18 April 1949 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1949: highest significance records shown on the map
Station	Country	Type	Value	Significance
Port Jervis	United States	Record daily precipitation	63.5 mm (2.5 in)	58 of 100 (Notable)
Boggabri (Milchengowrie)	Australia	Record daily precipitation	45.7 mm (1.8 in)	50 of 100 (Notable)
Mulakumood	India	Record daily precipitation	87.6 mm (3.4 in)	36 of 100 (Notable)
Kulasekaram	India	Record daily precipitation	114.3 mm (4.5 in)	33 of 100 (Routine)
Kuzhithurai	India	Record daily precipitation	97.0 mm (3.8 in)	33 of 100 (Routine)
Maranguape	Brazil	Record daily precipitation	72.0 mm (2.8 in)	32 of 100 (Routine)
Tasiilaq	Greenland [Denmark]	Record low maximum temperature	-9.4 C (15.1 F)	32 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record high minimum temperature	8.6 C (47.5 F)	32 of 100 (Routine)
Palmerton	United States	Record daily precipitation	42.4 mm (1.7 in)	32 of 100 (Routine)
Karlsruhe	Germany	Record high maximum temperature	29.6 C (85.3 F)	31 of 100 (Routine)
Aachen	Germany	Record high maximum temperature	29.3 C (84.7 F)	30 of 100 (Routine)
Altastenberg	Germany	Record high minimum temperature	14.5 C (58.1 F)	30 of 100 (Routine)
Arnsberg	Germany	Record high maximum temperature	27.7 C (81.9 F)	30 of 100 (Routine)
Brocken	Germany	Record high minimum temperature	14.1 C (57.4 F)	29 of 100 (Routine)
Big St Germain Dam	United States	Record daily snowfall	7.6 cm (3.0 in)	29 of 100 (Routine)
Ganmain (Dullah Dullah)	Australia	Record daily precipitation	25.4 mm (1.0 in)	28 of 100 (Routine)
Nedumangad	India	Record daily precipitation	77.5 mm (3.1 in)	28 of 100 (Routine)
Bamberg	Germany	Record high maximum temperature	29.0 C (84.2 F)	27 of 100 (Routine)
Sialsuk	India	Record daily precipitation	66.0 mm (2.6 in)	27 of 100 (Routine)
Rajakkamangalam	India	Record daily precipitation	46.0 mm (1.8 in)	26 of 100 (Routine)
Karlstad	Sweden	Record high minimum temperature	8.8 C (47.8 F)	26 of 100 (Routine)
Hailakundi India	India	Record daily precipitation	132.1 mm (5.2 in)	25 of 100 (Routine)
Fort Cochin	India	Record daily precipitation	69.9 mm (2.8 in)	25 of 100 (Routine)
P.P. Channel	India	Record daily precipitation	134.6 mm (5.3 in)	25 of 100 (Routine)
Jalpaiguri	India	Record daily precipitation	73.7 mm (2.9 in)	25 of 100 (Routine)
Tg Jiu	Romania	Record low minimum temperature	-3.4 C (25.9 F)	25 of 100 (Routine)
Santa Paula	United States	Record low maximum temperature	16.1 C (61.0 F)	25 of 100 (Routine)
Campbellford	Canada	Record daily precipitation	28.7 mm (1.1 in)	24 of 100 (Routine)
Monierkhal	India	Record daily precipitation	73.9 mm (2.9 in)	24 of 100 (Routine)
Girona (Antic Institut)	Spain	Record high maximum temperature	26.5 C (79.7 F)	24 of 100 (Routine)
Olney 2S	United States	Record low maximum temperature	7.8 C (46.0 F)	24 of 100 (Routine)
Port Said	Egypt	Record low maximum temperature	17.0 C (62.6 F)	23 of 100 (Routine)
Weissenburg	Germany	Record high maximum temperature	27.3 C (81.1 F)	23 of 100 (Routine)
Owosso Wwtp	United States	Record daily snowfall	5.1 cm (2.0 in)	23 of 100 (Routine)
Palani	India	Record daily precipitation	37.3 mm (1.5 in)	22 of 100 (Routine)
Ashland	United States	Record low minimum temperature	-2.8 C (27.0 F)	22 of 100 (Routine)
Ernakulam	India	Record daily precipitation	74.2 mm (2.9 in)	21 of 100 (Routine)
Annavasal	India	Record daily precipitation	41.7 mm (1.6 in)	21 of 100 (Routine)
Den Helder-1	Netherlands	Record high maximum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
Fitzgerald	United States	Record low minimum temperature	3.9 C (39.0 F)	21 of 100 (Routine)
Tomahawk Spirit Rsvr	United States	Record daily snowfall	10.2 cm (4.0 in)	21 of 100 (Routine)
Collingwood	Canada	Record daily snowfall	0.8 cm (0.3 in)	20 of 100 (Routine)
Nicosia	Cyprus	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Tashkent	Uzbekistan	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Mossgiel (Moolbong)	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Tiffin	United States	Record daily snowfall	2.5 cm (1.0 in)	20 of 100 (Routine)
Pastura 6 SSE	United States	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Limassol	Cyprus	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Portales	United States	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Sedan 7 NW	United States	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Neillsville 3ESE	United States	Record daily snowfall	2.5 cm (1.0 in)	20 of 100 (Routine)
Lima Wwtp	United States	Record daily snowfall	2.5 cm (1.0 in)	20 of 100 (Routine)
Merrill	United States	Record daily snowfall	3.8 cm (1.5 in)	20 of 100 (Routine)
Sheboygan	United States	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Pudukkottai	India	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Woodburn Post Office	Australia	Record daily precipitation	42.4 mm (1.7 in)	20 of 100 (Routine)
Iluppur	India	Record daily precipitation	8.6 mm (0.34 in)	20 of 100 (Routine)
Viralimalai	India	Record daily precipitation	30.5 mm (1.2 in)	20 of 100 (Routine)
Den Helder	Netherlands	Record high maximum temperature	18.5 C (65.3 F)	20 of 100 (Routine)
Atlanta 1 E	United States	Record high minimum temperature	2.8 C (37.0 F)	20 of 100 (Routine)

Counts by Type and Timescale

345 records

Records set or tied on 18 April 1949 by type: Highest daily maximum 82, Lowest daily maximum 73, Highest daily minimum 43, Lowest daily minimum 38, Heaviest daily rainfall 93, Heaviest daily snowfall 15, Deepest snow cover 1.

Records on 18 April 1949 by type
Record type	Records
Highest daily maximum	82
Lowest daily maximum	73
Highest daily minimum	43
Lowest daily minimum	38
Heaviest daily rainfall	93
Heaviest daily snowfall	15
Deepest snow cover	1

Records on 18 April 1949 by timescale: all-time 0, monthly 17, daily 328.

How Much Records Were Beaten By

272 broken records

Margins by which the 272 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 97.0. Ties are not counted.

Top 20 by Significance

18 April 1949

Top 20 records on 18 April 1949 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1949	Port Jervis, US	daily rain	63.5 mm (2.5 in)	41.4 mm (1.6 in)	36 years	58 of 100 (Notable)
18 April 1949	Boggabri (Milchengowrie), AU	daily rain	45.7 mm (1.8 in)	26.9 mm (1.1 in)	54 years	50 of 100 (Notable)
18 April 1949	Mulakumood, IN	daily rain	87.6 mm (3.4 in)	40.6 mm (1.6 in)	28 years	36 of 100 (Notable)
18 April 1949	Kulasekaram, IN	monthly rain	114.3 mm (4.5 in)	30.5 mm (1.2 in)	9 years	33 of 100 (Routine)
18 April 1949	Kuzhithurai, IN	monthly rain	97.0 mm (3.8 in)	12.7 mm (0.5 in)	39 years	33 of 100 (Routine)
18 April 1949	Maranguape, BR	daily rain	72.0 mm (2.8 in)	36.3 mm (1.4 in)	20 years	32 of 100 (Routine)
18 April 1949	Tasiilaq, GL	daily low max	-9.4 C (15.1 F)	6.5 C (11.7 F)	39 years	32 of 100 (Routine)
18 April 1949	Linkoeping-Malmslaett, SE	daily high min	8.6 C (47.5 F)	3.6 C (6.5 F)	54 years	32 of 100 (Routine)
18 April 1949	Palmerton, US	daily rain	42.4 mm (1.7 in)	20.3 mm (0.8 in)	24 years	32 of 100 (Routine)
18 April 1949	Karlsruhe, DE	monthly high max	29.6 C (85.3 F)	0.6 C (1.1 F)	45 years	31 of 100 (Routine)
18 April 1949	Aachen, DE	monthly high max	29.3 C (84.7 F)	1.0 C (1.8 F)	45 years	30 of 100 (Routine)
18 April 1949	Altastenberg, DE	monthly high min	14.5 C (58.1 F)	0.4 C (0.7 F)	45 years	30 of 100 (Routine)
18 April 1949	Arnsberg, DE	monthly high max	27.7 C (81.9 F)	0.1 C (0.2 F)	45 years	30 of 100 (Routine)
18 April 1949	Brocken, DE	monthly high min	14.1 C (57.4 F)	1.8 C (3.2 F)	35 years	29 of 100 (Routine)
18 April 1949	Big St Germain Dam, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	39 years	29 of 100 (Routine)
18 April 1949	Ganmain (Dullah Dullah), AU	daily rain	25.4 mm (1.0 in)	10.4 mm (0.4 in)	44 years	28 of 100 (Routine)
18 April 1949	Nedumangad, IN	daily rain	77.5 mm (3.1 in)	17.0 mm (0.7 in)	48 years	28 of 100 (Routine)
18 April 1949	Bamberg, DE	daily high max	29.0 C (84.2 F)	4.1 C (7.4 F)	40 years	27 of 100 (Routine)
18 April 1949	Sialsuk, IN	daily rain	66.0 mm (2.6 in)	26.4 mm (1.0 in)	35 years	27 of 100 (Routine)
18 April 1949	Rajakkamangalam, IN	daily rain	46.0 mm (1.8 in)	14.0 mm (0.6 in)	44 years	26 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

1793 to 1949

Records set or tied on this calendar date in each year from 1793 to 1949. 1949 had 345 records.

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

Records on 04-18 in each year
Year	Records
1793	1
1807	2
1815	1
1838	1
1847	1
1849	1
1851	1
1852	3
1854	3
1855	1
1865	4
1867	1
1870	1
1871	1
1875	4
1877	2
1878	1
1879	3
1880	2
1884	2
1886	2
1887	3
1888	1
1889	1
1890	2
1891	1
1892	3
1893	5
1894	7
1895	2
1896	3
1897	5
1898	8
1899	2
1900	2
1901	6
1902	5
1903	11
1904	9
1905	12
1906	18
1907	17
1908	37
1909	19
1910	19
1911	25
1912	21
1913	26
1914	38
1915	31
1916	22
1917	40
1918	76
1919	16
1920	64
1921	58
1922	85
1923	107
1924	101
1925	154
1926	322
1927	391
1928	323
1929	126
1930	113
1931	173
1932	326
1933	211
1934	391
1935	264
1936	483
1937	477
1938	711
1939	525
1940	322
1941	496
1942	287
1943	298
1944	259
1945	371
1946	357
1947	444
1948	932
1949	345
1950	244
1951	658
1952	536
1953	1,322
1954	442
1955	817
1956	467
1957	629
1958	370
1959	468
1960	320
1961	520
1962	484
1963	662
1964	449
1965	363
1966	776
1967	882
1968	867
1969	795
1970	771
1971	1,106
1972	470
1973	953
1974	326
1975	751
1976	1,309
1977	717
1978	803
1979	841
1980	842
1981	708
1982	616
1983	2,082
1984	625
1985	1,119
1986	622
1987	1,068
1988	936
1989	625
1990	1,368
1991	780
1992	702
1993	730
1994	1,218
1995	1,601
1996	826
1997	1,256
1998	1,011
1999	1,428
2000	912
2001	1,487
2002	2,084
2003	969
2004	846
2005	622
2006	1,262
2007	675
2008	913
2009	624
2010	478
2011	1,122
2012	744
2013	2,509
2014	534
2015	519
2016	973
2017	588
2018	1,202
2019	601
2020	770
2021	592
2022	1,013
2023	739
2024	641
2025	997
2026	498

Download the Data

Data for records on 1949-04-18: 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 20	250
20 to 40	18
40 to 60	2
60 to 80	1
80 to 100	1