Weather Records on 18 May 1949

597 weather records were set or tied worldwide on 18 May 1949. Highest significance: Carnegie 5 NE, US.

Key Facts for 18 May 1949

On 18 May 1949, 597 weather records were set or tied at long-record stations worldwide.
235 were record highs and 85 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 15 monthly and 581 daily.
Carnegie 5 NE set an all-time record daily precipitation of 218.4 mm (8.6 in) on 18 May 1949.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 442 records.

Record Map

597 stations

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

Weather records on 18 May 1949: highest significance records shown on the map
Station	Country	Type	Value	Significance
Carnegie 5 NE	United States	Record daily precipitation	218.4 mm (8.6 in)	69 of 100 (Major)
Santa Barbara	United States	Record daily precipitation	42.2 mm (1.7 in)	61 of 100 (Major)
Carrieton (Yanyarrie)	Australia	Record daily precipitation	40.4 mm (1.6 in)	60 of 100 (Major)
Norman 3SSE	United States	Record daily precipitation	201.9 mm (7.9 in)	55 of 100 (Notable)
Pusesauli	India	Record daily precipitation	73.7 mm (2.9 in)	51 of 100 (Notable)
Roopena	Australia	Record daily precipitation	39.9 mm (1.6 in)	50 of 100 (Notable)
Maceio (Aeroporto)	Brazil	Record daily precipitation	238.3 mm (9.4 in)	50 of 100 (Notable)
Shawnee	United States	Record daily precipitation	106.7 mm (4.2 in)	50 of 100 (Notable)
Kingscote (Karinga)	Australia	Record daily precipitation	30.0 mm (1.2 in)	47 of 100 (Notable)
Uniao Dos Palmares	Brazil	Record daily precipitation	103.5 mm (4.1 in)	44 of 100 (Notable)
Atalaia	Brazil	Record daily precipitation	282.5 mm (11.1 in)	44 of 100 (Notable)
Gundlupet	India	Record daily precipitation	124.5 mm (4.9 in)	44 of 100 (Notable)
Panchgani	India	Record daily precipitation	83.8 mm (3.3 in)	44 of 100 (Notable)
Escanaba	United States	Record daily precipitation	54.1 mm (2.1 in)	42 of 100 (Notable)
Tirunelveli	India	Record daily precipitation	51.8 mm (2.0 in)	39 of 100 (Notable)
Dresden Wahnsdorf	Germany	Record daily precipitation	35.8 mm (1.4 in)	38 of 100 (Notable)
Ellore	India	Record daily precipitation	55.6 mm (2.2 in)	38 of 100 (Notable)
Sonari	India	Record daily precipitation	98.8 mm (3.9 in)	38 of 100 (Notable)
Birdwood	Australia	Record daily precipitation	41.1 mm (1.6 in)	35 of 100 (Notable)
Eckman 2 SE	United States	Record daily precipitation	41.9 mm (1.6 in)	35 of 100 (Notable)
Okmulgee Wtr Wks	United States	Record daily precipitation	73.7 mm (2.9 in)	35 of 100 (Notable)
Teresina	Brazil	Record daily precipitation	120.0 mm (4.7 in)	34 of 100 (Routine)
Cape Moreton Lighthouse	Australia	Record daily precipitation	65.8 mm (2.6 in)	33 of 100 (Routine)
Quebrangulo	Brazil	Record daily precipitation	75.6 mm (3.0 in)	33 of 100 (Routine)
Geraldine 6 SE	United States	Record daily snowfall	7.6 cm (3.0 in)	32 of 100 (Routine)
Palmer	Australia	Record daily precipitation	26.4 mm (1.0 in)	31 of 100 (Routine)
Putbus	Germany	Record high minimum temperature	13.7 C (56.7 F)	31 of 100 (Routine)
Pembroke Eddy Match	Canada	Record high minimum temperature	15.6 C (60.1 F)	30 of 100 (Routine)
Red Lake Falls	United States	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Hennessey 4 ESE	United States	Record daily precipitation	64.8 mm (2.6 in)	30 of 100 (Routine)
Beachport	Australia	Record daily precipitation	28.2 mm (1.1 in)	29 of 100 (Routine)
Alton	Canada	Record high minimum temperature	18.3 C (64.9 F)	29 of 100 (Routine)
Mistassini Post	Canada	Record daily precipitation	41.9 mm (1.6 in)	29 of 100 (Routine)
Nazira	India	Record daily precipitation	73.7 mm (2.9 in)	29 of 100 (Routine)
N Fk Rs	United States	Record daily precipitation	28.2 mm (1.1 in)	29 of 100 (Routine)
Holdenville 2SSE	United States	Record daily precipitation	72.4 mm (2.9 in)	29 of 100 (Routine)
Haliburton A	Canada	Record high minimum temperature	14.4 C (57.9 F)	28 of 100 (Routine)
Alice Springs Post Office	Australia	Record high minimum temperature	17.8 C (64.0 F)	27 of 100 (Routine)
Oswego 1 N	United States	Record daily precipitation	27.9 mm (1.1 in)	27 of 100 (Routine)
Pahala 21	United States	Record low maximum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Mount Pleasant	Australia	Record daily precipitation	29.0 mm (1.1 in)	26 of 100 (Routine)
Mildura Post Office	Australia	Record high minimum temperature	13.3 C (55.9 F)	26 of 100 (Routine)
Madawaska	Canada	Record high minimum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Du Quoin 4 SE	United States	Record high minimum temperature	24.4 C (75.9 F)	26 of 100 (Routine)
Port Stanley	Canada	Record high minimum temperature	16.1 C (61.0 F)	25 of 100 (Routine)
Dayton Mcd	United States	Record high minimum temperature	20.6 C (69.1 F)	25 of 100 (Routine)
Kamennaja-Step	Russia	Record high maximum temperature	32.9 C (91.2 F)	24 of 100 (Routine)
Vanersborg	Sweden	Record high maximum temperature	25.1 C (77.2 F)	24 of 100 (Routine)
Alta	United States	Record daily precipitation	26.9 mm (1.1 in)	24 of 100 (Routine)
Chickasha	United States	Record daily precipitation	70.6 mm (2.8 in)	24 of 100 (Routine)
Muskogee	United States	Record daily precipitation	52.1 mm (2.1 in)	24 of 100 (Routine)
Basin	United States	Record low maximum temperature	10.0 C (50.0 F)	24 of 100 (Routine)
Newport	United States	Record high maximum temperature	23.9 C (75.0 F)	24 of 100 (Routine)
Houghton (Glen Ewin)	Australia	Record daily precipitation	27.4 mm (1.1 in)	23 of 100 (Routine)
Gumeracha	Australia	Record daily precipitation	30.2 mm (1.2 in)	23 of 100 (Routine)
Caldwell	Canada	Record daily snowfall	5.1 cm (2.0 in)	23 of 100 (Routine)
Biscotasing	Canada	Record high minimum temperature	14.4 C (57.9 F)	23 of 100 (Routine)
Troicko-Pecherskoe	Russia	Record high minimum temperature	10.1 C (50.2 F)	23 of 100 (Routine)
Barabinsk	Russia	Record low minimum temperature	-5.4 C (22.3 F)	23 of 100 (Routine)
Santa Paula	United States	Record low maximum temperature	16.1 C (61.0 F)	23 of 100 (Routine)

Counts by Type and Timescale

597 records

Records set or tied on 18 May 1949 by type: Highest daily maximum 86, Lowest daily maximum 63, Highest daily minimum 149, Lowest daily minimum 22, Heaviest daily rainfall 267, Heaviest daily snowfall 10.

Records on 18 May 1949 by type
Record type	Records
Highest daily maximum	86
Lowest daily maximum	63
Highest daily minimum	149
Lowest daily minimum	22
Heaviest daily rainfall	267
Heaviest daily snowfall	10
Deepest snow cover	0

Records on 18 May 1949 by timescale: all-time 1, monthly 15, daily 581.

How Much Records Were Beaten By

495 broken records

Margins by which the 495 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 221.0. Ties are not counted.

Top 20 by Significance

18 May 1949

Top 20 records on 18 May 1949 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1949	Carnegie 5 NE, US	all-time rain	218.4 mm (8.6 in)	97.7 mm (3.8 in)	22 years	69 of 100 (Major)
18 May 1949	Santa Barbara, US	daily rain	42.2 mm (1.7 in)	42.2 mm (1.7 in)	55 years	61 of 100 (Major)
18 May 1949	Carrieton (Yanyarrie), AU	daily rain	40.4 mm (1.6 in)	30.2 mm (1.2 in)	48 years	60 of 100 (Major)
18 May 1949	Norman 3SSE, US	monthly rain	201.9 mm (7.9 in)	52.3 mm (2.1 in)	51 years	55 of 100 (Notable)
18 May 1949	Pusesauli, IN	monthly rain	73.7 mm (2.9 in)	29.2 mm (1.1 in)	29 years	51 of 100 (Notable)
18 May 1949	Roopena, AU	daily rain	39.9 mm (1.6 in)	34.8 mm (1.4 in)	16 years	50 of 100 (Notable)
18 May 1949	Maceio (Aeroporto), BR	daily rain	238.3 mm (9.4 in)	213.0 mm (8.4 in)	24 years	50 of 100 (Notable)
18 May 1949	Shawnee, US	daily rain	106.7 mm (4.2 in)	62.2 mm (2.4 in)	47 years	50 of 100 (Notable)
18 May 1949	Kingscote (Karinga), AU	daily rain	30.0 mm (1.2 in)	23.6 mm (0.9 in)	10 years	47 of 100 (Notable)
18 May 1949	Uniao Dos Palmares, BR	daily rain	103.5 mm (4.1 in)	75.5 mm (3.0 in)	6 years	44 of 100 (Notable)
18 May 1949	Atalaia, BR	daily rain	282.5 mm (11.1 in)	221.0 mm (8.7 in)	6 years	44 of 100 (Notable)
18 May 1949	Gundlupet, IN	monthly rain	124.5 mm (4.9 in)	35.6 mm (1.4 in)	19 years	44 of 100 (Notable)
18 May 1949	Panchgani, IN	monthly rain	83.8 mm (3.3 in)	22.1 mm (0.9 in)	45 years	44 of 100 (Notable)
18 May 1949	Escanaba, US	monthly rain	54.1 mm (2.1 in)	3.6 mm (0.14 in)	73 years	42 of 100 (Notable)
18 May 1949	Tirunelveli, IN	daily rain	51.8 mm (2.0 in)	38.6 mm (1.5 in)	23 years	39 of 100 (Notable)
18 May 1949	Dresden Wahnsdorf, DE	daily rain	35.8 mm (1.4 in)	20.9 mm (0.8 in)	10 years	38 of 100 (Notable)
18 May 1949	Ellore, IN	daily rain	55.6 mm (2.2 in)	42.6 mm (1.7 in)	32 years	38 of 100 (Notable)
18 May 1949	Sonari, IN	daily rain	98.8 mm (3.9 in)	50.0 mm (2.0 in)	26 years	38 of 100 (Notable)
18 May 1949	Birdwood, AU	daily rain	41.1 mm (1.6 in)	13.2 mm (0.5 in)	48 years	35 of 100 (Notable)
18 May 1949	Eckman 2 SE, US	daily rain	41.9 mm (1.6 in)	23.9 mm (0.9 in)	4 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

1796 to 1949

Records set or tied on this calendar date in each year from 1796 to 1949. 1949 had 597 records.

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

Records on 05-18 in each year
Year	Records
1796	1
1798	1
1802	2
1832	1
1833	1
1845	1
1847	1
1848	1
1855	1
1859	1
1861	2
1863	3
1864	1
1866	2
1868	2
1869	1
1870	1
1871	2
1872	1
1874	2
1877	4
1878	1
1879	1
1881	1
1883	2
1884	2
1885	1
1887	1
1888	4
1889	2
1891	1
1893	2
1894	4
1895	5
1896	2
1897	2
1898	1
1899	1
1900	13
1901	6
1902	9
1903	7
1904	11
1905	2
1906	24
1907	18
1908	5
1909	12
1910	50
1911	64
1912	5
1913	11
1914	45
1915	55
1916	74
1917	30
1918	42
1919	30
1920	26
1921	41
1922	33
1923	61
1924	92
1925	220
1926	133
1927	180
1928	160
1929	193
1930	475
1931	191
1932	460
1933	380
1934	390
1935	400
1936	282
1937	348
1938	382
1939	169
1940	315
1941	334
1942	421
1943	744
1944	496
1945	706
1946	651
1947	231
1948	426
1949	597
1950	473
1951	279
1952	493
1953	393
1954	498
1955	848
1956	795
1957	595
1958	334
1959	435
1960	404
1961	187
1962	1,199
1963	477
1964	329
1965	345
1966	438
1967	410
1968	817
1969	865
1970	703
1971	666
1972	499
1973	1,233
1974	1,097
1975	383
1976	733
1977	1,126
1978	1,090
1979	399
1980	614
1981	1,218
1982	452
1983	1,093
1984	717
1985	498
1986	1,131
1987	823
1988	1,154
1989	721
1990	753
1991	1,218
1992	921
1993	707
1994	1,015
1995	1,849
1996	1,767
1997	1,115
1998	1,060
1999	584
2000	922
2001	898
2002	1,833
2003	1,270
2004	847
2005	630
2006	1,493
2007	1,133
2008	999
2009	1,368
2010	894
2011	1,406
2012	523
2013	816
2014	609
2015	785
2016	597
2017	1,855
2018	557
2019	810
2020	706
2021	418
2022	711
2023	554
2024	551
2025	619
2026	1,131

Download the Data

Data for records on 1949-05-18: 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 50	484
50 to 100	9
100 to 150	0
150 to 200	0
200 to 250	2