Weather Records on 18 October 1948

1,128 weather records were set or tied worldwide on 18 October 1948. Highest significance: Blythe, US.

Key Facts for 18 October 1948

On 18 October 1948, 1,128 weather records were set or tied at long-record stations worldwide.
30 were record highs and 884 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 15 monthly and 1,113 daily.
Blythe set a daily record precipitation of 37.3 mm (1.5 in) on 18 October 1948.
Across 167 earlier years (1794 to 2025) the same calendar date averaged 430 records.

Record Map

1,128 stations

1,128 station records on 18 October 1948 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 October 1948: highest significance records shown on the map
Station	Country	Type	Value	Significance
Blythe	United States	Record daily precipitation	37.3 mm (1.5 in)	53 of 100 (Notable)
Rio Grande City	United States	Record daily precipitation	69.9 mm (2.8 in)	48 of 100 (Notable)
Guayama 1SW	Puerto Rico [United States]	Record daily precipitation	124.2 mm (4.9 in)	47 of 100 (Notable)
Ajo	United States	Record daily precipitation	31.0 mm (1.2 in)	44 of 100 (Notable)
Duiwelskloof (Mun)	South Africa	Record daily precipitation	79.5 mm (3.1 in)	43 of 100 (Notable)
Tuddal	Norway	Record daily precipitation	32.2 mm (1.3 in)	41 of 100 (Notable)
Manikpur	India	Record daily precipitation	44.7 mm (1.8 in)	37 of 100 (Notable)
Lucknow	Canada	Record daily snowfall	6.4 cm (2.5 in)	35 of 100 (Notable)
Dilley	United States	Record low maximum temperature	12.8 C (55.0 F)	35 of 100 (Notable)
Montrose	United States	Record daily snowfall	8.9 cm (3.5 in)	34 of 100 (Routine)
Floresville	United States	Record daily precipitation	69.9 mm (2.8 in)	34 of 100 (Routine)
Kayford	United States	Record daily precipitation	49.5 mm (1.9 in)	34 of 100 (Routine)
Albany 3 SE	United States	Record low maximum temperature	17.2 C (63.0 F)	33 of 100 (Routine)
Hiasen I Sigdal	Norway	Record daily precipitation	27.3 mm (1.1 in)	32 of 100 (Routine)
Pontotoc	United States	Record low maximum temperature	10.0 C (50.0 F)	32 of 100 (Routine)
Leitchfield 2 N	United States	Record low maximum temperature	4.4 C (39.9 F)	31 of 100 (Routine)
Coldwater	United States	Record low maximum temperature	8.9 C (48.0 F)	31 of 100 (Routine)
Sherman	United States	Record low minimum temperature	-1.1 C (30.0 F)	31 of 100 (Routine)
New Orleans Audubon	United States	Record low maximum temperature	16.1 C (61.0 F)	31 of 100 (Routine)
Bjornholt	Norway	Record daily precipitation	39.1 mm (1.5 in)	30 of 100 (Routine)
Lufkin Angelina Co AP	United States	Record low minimum temperature	-1.7 C (28.9 F)	30 of 100 (Routine)
Khagaul	India	Record daily precipitation	46.5 mm (1.8 in)	29 of 100 (Routine)
Benson	United States	Record low maximum temperature	18.3 C (64.9 F)	29 of 100 (Routine)
Helena	United States	Record low maximum temperature	9.4 C (48.9 F)	29 of 100 (Routine)
Barrett Dam	United States	Record daily precipitation	40.4 mm (1.6 in)	29 of 100 (Routine)
Anna 4 N	United States	Record low minimum temperature	-4.4 C (24.1 F)	29 of 100 (Routine)
Minden	United States	Record low maximum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
Booneville	United States	Record low maximum temperature	10.6 C (51.1 F)	29 of 100 (Routine)
Clarksdale	United States	Record low maximum temperature	9.4 C (48.9 F)	29 of 100 (Routine)
Hatch	United States	Record low maximum temperature	13.3 C (55.9 F)	29 of 100 (Routine)
Caroleen	United States	Record low maximum temperature	11.7 C (53.1 F)	29 of 100 (Routine)
Union City	United States	Record low maximum temperature	7.2 C (45.0 F)	29 of 100 (Routine)
Umtata	South Africa	Record daily precipitation	27.6 mm (1.1 in)	28 of 100 (Routine)
Sycamore	United States	Record low minimum temperature	-7.8 C (18.0 F)	28 of 100 (Routine)
Schriever	United States	Record low maximum temperature	17.2 C (63.0 F)	28 of 100 (Routine)
Edinburg	United States	Record low maximum temperature	14.4 C (57.9 F)	28 of 100 (Routine)
Louisville	United States	Record low maximum temperature	13.9 C (57.0 F)	28 of 100 (Routine)
Rosedale	United States	Record low maximum temperature	9.4 C (48.9 F)	28 of 100 (Routine)
Warrenton 1 N	United States	Record low minimum temperature	-5.6 C (21.9 F)	28 of 100 (Routine)
Durant	United States	Record low minimum temperature	-4.4 C (24.1 F)	28 of 100 (Routine)
Clinton	United States	Record daily precipitation	37.1 mm (1.5 in)	28 of 100 (Routine)
Jackson Exp STN	United States	Record low maximum temperature	10.0 C (50.0 F)	28 of 100 (Routine)
Temple	United States	Record low minimum temperature	0.6 C (33.1 F)	28 of 100 (Routine)
Chattanooga Wb City	United States	Record low minimum temperature	0.6 C (33.1 F)	28 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low minimum temperature	-4.4 C (24.1 F)	28 of 100 (Routine)
Hot Springs 1 NNE	United States	Record low maximum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
Anchorage	United States	Record low minimum temperature	-6.7 C (19.9 F)	27 of 100 (Routine)
Beaver Dam	United States	Record low minimum temperature	-7.2 C (19.0 F)	27 of 100 (Routine)
Moorhead	United States	Record low maximum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Pontotoc	United States	Record low minimum temperature	-1.1 C (30.0 F)	27 of 100 (Routine)
Ft Stanton	United States	Record low maximum temperature	6.1 C (43.0 F)	27 of 100 (Routine)
Meeker 5 W	United States	Record low minimum temperature	-4.4 C (24.1 F)	27 of 100 (Routine)
Lynnville 4 SSW	United States	Record low maximum temperature	10.0 C (50.0 F)	27 of 100 (Routine)
Waynesboro	United States	Record low maximum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Flint	United States	Record low minimum temperature	1.1 C (34.0 F)	27 of 100 (Routine)
Weatherford	United States	Record low minimum temperature	-1.1 C (30.0 F)	27 of 100 (Routine)
Lafayette Rgnl AP	United States	Record low minimum temperature	2.2 C (36.0 F)	27 of 100 (Routine)
Postmyr I Drangedal	Norway	Record daily precipitation	28.2 mm (1.1 in)	26 of 100 (Routine)
Thomasville	United States	Record low minimum temperature	0.0 C (32.0 F)	26 of 100 (Routine)
Ozark	United States	Record low maximum temperature	11.1 C (52.0 F)	26 of 100 (Routine)

Counts by Type and Timescale

1,128 records

Records set or tied on 18 October 1948 by type: Highest daily maximum 8, Lowest daily maximum 247, Highest daily minimum 22, Lowest daily minimum 637, Heaviest daily rainfall 196, Heaviest daily snowfall 17, Deepest snow cover 1.

Records on 18 October 1948 by type
Record type	Records
Highest daily maximum	8
Lowest daily maximum	247
Highest daily minimum	22
Lowest daily minimum	637
Heaviest daily rainfall	196
Heaviest daily snowfall	17
Deepest snow cover	1

Records on 18 October 1948 by timescale: all-time 0, monthly 15, daily 1,113.

How Much Records Were Beaten By

971 broken records

Margins by which the 971 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 89.0. Ties are not counted.

Top 20 by Significance

18 October 1948

Top 20 records on 18 October 1948 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 October 1948	Blythe, US	daily rain	37.3 mm (1.5 in)	37.3 mm (1.5 in)	35 years	53 of 100 (Notable)
18 October 1948	Rio Grande City, US	daily rain	69.9 mm (2.8 in)	41.5 mm (1.6 in)	14 years	48 of 100 (Notable)
18 October 1948	Guayama 1SW, PR	daily rain	124.2 mm (4.9 in)	71.6 mm (2.8 in)	15 years	47 of 100 (Notable)
18 October 1948	Ajo, US	daily rain	31.0 mm (1.2 in)	31.0 mm (1.2 in)	34 years	44 of 100 (Notable)
18 October 1948	Duiwelskloof (Mun), ZA	monthly rain	79.5 mm (3.1 in)	18.5 mm (0.7 in)	32 years	43 of 100 (Notable)
18 October 1948	Tuddal, NO	daily rain	32.2 mm (1.3 in)	17.7 mm (0.7 in)	47 years	41 of 100 (Notable)
18 October 1948	Manikpur, IN	daily rain	44.7 mm (1.8 in)	44.7 mm (1.8 in)	41 years	37 of 100 (Notable)
18 October 1948	Lucknow, CA	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	62 years	35 of 100 (Notable)
18 October 1948	Dilley, US	daily low max	12.8 C (55.0 F)	10.0 C (18.0 F)	29 years	35 of 100 (Notable)
18 October 1948	Montrose, US	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	45 years	34 of 100 (Routine)
18 October 1948	Floresville, US	daily rain	69.9 mm (2.8 in)	54.7 mm (2.2 in)	6 years	34 of 100 (Routine)
18 October 1948	Kayford, US	daily rain	49.5 mm (1.9 in)	38.3 mm (1.5 in)	12 years	34 of 100 (Routine)
18 October 1948	Albany 3 SE, US	daily low max	17.2 C (63.0 F)	6.7 C (12.1 F)	42 years	33 of 100 (Routine)
18 October 1948	Hiasen I Sigdal, NO	daily rain	27.3 mm (1.1 in)	10.1 mm (0.4 in)	47 years	32 of 100 (Routine)
18 October 1948	Pontotoc, US	daily low max	10.0 C (50.0 F)	6.7 C (12.1 F)	49 years	32 of 100 (Routine)
18 October 1948	Leitchfield 2 N, US	daily low max	4.4 C (39.9 F)	6.7 C (12.1 F)	49 years	31 of 100 (Routine)
18 October 1948	Coldwater, US	daily low max	8.9 C (48.0 F)	6.1 C (11.0 F)	49 years	31 of 100 (Routine)
18 October 1948	Sherman, US	daily low min	-1.1 C (30.0 F)	6.7 C (12.1 F)	45 years	31 of 100 (Routine)
18 October 1948	New Orleans Audubon, US	daily low max	16.1 C (61.0 F)	5.0 C (9.0 F)	45 years	31 of 100 (Routine)
18 October 1948	Bjornholt, NO	daily rain	39.1 mm (1.5 in)	11.3 mm (0.4 in)	47 years	30 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

1794 to 1948

Records set or tied on this calendar date in each year from 1794 to 1948. 1948 had 1,128 records.

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

Records on 10-18 in each year
Year	Records
1794	1
1796	1
1799	1
1806	1
1807	1
1810	1
1811	2
1817	1
1832	1
1835	1
1836	1
1843	1
1846	2
1848	1
1849	1
1851	1
1852	1
1859	1
1863	1
1865	2
1866	2
1868	1
1869	1
1871	1
1872	1
1874	4
1876	2
1877	2
1879	3
1881	1
1882	1
1883	2
1887	1
1888	1
1890	4
1892	4
1893	1
1894	3
1895	2
1897	6
1898	5
1899	12
1900	5
1901	5
1902	6
1903	9
1904	12
1905	27
1906	17
1907	11
1908	44
1909	23
1910	50
1911	22
1912	12
1913	26
1914	52
1915	12
1916	64
1917	109
1918	24
1919	31
1920	87
1921	87
1922	59
1923	114
1924	151
1925	153
1926	149
1927	309
1928	316
1929	190
1930	507
1931	350
1932	446
1933	264
1934	222
1935	360
1936	483
1937	671
1938	536
1939	475
1940	532
1941	240
1942	332
1943	844
1944	264
1945	398
1946	355
1947	965
1948	1,128
1949	665
1950	996
1951	325
1952	394
1953	678
1954	621
1955	403
1956	578
1957	220
1958	407
1959	246
1960	612
1961	362
1962	252
1963	492
1964	311
1965	1,066
1966	613
1967	405
1968	737
1969	789
1970	501
1971	1,199
1972	1,581
1973	789
1974	746
1975	779
1976	1,326
1977	533
1978	545
1979	555
1980	1,024
1981	680
1982	654
1983	684
1984	1,331
1985	831
1986	344
1987	518
1988	733
1989	1,196
1990	1,043
1991	999
1992	1,295
1993	1,051
1994	1,296
1995	1,227
1996	795
1997	1,240
1998	1,323
1999	773
2000	823
2001	818
2002	878
2003	1,097
2004	1,156
2005	755
2006	1,328
2007	1,298
2008	531
2009	1,546
2010	634
2011	736
2012	741
2013	430
2014	690
2015	915
2016	1,511
2017	590
2018	759
2019	346
2020	957
2021	387
2022	1,334
2023	693
2024	1,142
2025	367

Download the Data

Data for records on 1948-10-18: 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	952
20 to 40	10
40 to 60	6
60 to 80	2
80 to 100	1