Weather Records on 18 March 2003

1,425 weather records were set or tied worldwide on 18 March 2003. Highest significance: Georgetown, US.

Key Facts for 18 March 2003

On 18 March 2003, 1,425 weather records were set or tied at long-record stations worldwide.
853 were record highs and 180 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 74 monthly and 1,345 daily.
Georgetown set a monthly record daily snowfall of 48.5 cm (19.1 in) on 18 March 2003.
Across 160 earlier years (1806 to 2026) the same calendar date averaged 471 records.

Record Map

1,425 stations

1,425 station records on 18 March 2003 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 March 2003: highest significance records shown on the map
Station	Country	Type	Value	Significance
Georgetown	United States	Record daily snowfall	48.5 cm (19.1 in)	82 of 100 (Exceptional)
Oelrichs	United States	Record daily precipitation	76.2 mm (3.0 in)	80 of 100 (Exceptional)
Breckenridge	United States	Record daily precipitation	27.9 mm (1.1 in)	79 of 100 (Major)
Grand Lake 1 NW	United States	Record daily snowfall	45.7 cm (18.0 in)	78 of 100 (Major)
Camp Crook	United States	Record daily precipitation	35.6 mm (1.4 in)	74 of 100 (Major)
Cabin Creek	United States	Record snow depth	147.3 cm (58.0 in)	73 of 100 (Major)
Cabin Creek	United States	Record daily snowfall	129.5 cm (51.0 in)	72 of 100 (Major)
Redig 11 NE	United States	Record daily precipitation	43.9 mm (1.7 in)	69 of 100 (Major)
Shawnee	United States	Record daily precipitation	64.0 mm (2.5 in)	66 of 100 (Major)
Castle Rock	United States	Record daily snowfall	30.5 cm (12.0 in)	65 of 100 (Major)
Georgetown	United States	Record daily precipitation	34.0 mm (1.3 in)	65 of 100 (Major)
Hot Springs	United States	Record daily precipitation	33.0 mm (1.3 in)	64 of 100 (Major)
Powder River #2	United States	Record daily snowfall	53.3 cm (21.0 in)	64 of 100 (Major)
Potter	United States	Record daily precipitation	30.5 mm (1.2 in)	63 of 100 (Major)
Ralph 1 N	United States	Record daily precipitation	27.2 mm (1.1 in)	61 of 100 (Major)
Cheyenne	United States	Record daily snowfall	40.4 cm (15.9 in)	61 of 100 (Major)
Georgetown	United States	Record snow depth	53.3 cm (21.0 in)	60 of 100 (Major)
Albion 1 N	United States	Record daily precipitation	26.9 mm (1.1 in)	60 of 100 (Major)
Dickinson Exp STN	United States	Record daily precipitation	45.7 mm (1.8 in)	60 of 100 (Major)
Salida	United States	Record snow depth	30.5 cm (12.0 in)	59 of 100 (Notable)
Mizpah 4 NNW	United States	Record daily precipitation	39.9 mm (1.6 in)	59 of 100 (Notable)
Wauneta	United States	Record daily precipitation	47.5 mm (1.9 in)	59 of 100 (Notable)
Douglas 1 SE	United States	Record daily precipitation	44.2 mm (1.7 in)	59 of 100 (Notable)
Buena Vista 2S	United States	Record daily snowfall	26.7 cm (10.5 in)	58 of 100 (Notable)
Castle Rock	United States	Record daily precipitation	40.6 mm (1.6 in)	57 of 100 (Notable)
Longmont 2 ESE	United States	Record daily precipitation	39.6 mm (1.6 in)	57 of 100 (Notable)
Winter Park	United States	Record daily snowfall	48.3 cm (19.0 in)	56 of 100 (Notable)
Yuma	United States	Record daily precipitation	49.5 mm (1.9 in)	56 of 100 (Notable)
Watford City	United States	Record daily precipitation	27.7 mm (1.1 in)	56 of 100 (Notable)
Chugwater	United States	Record daily precipitation	39.4 mm (1.6 in)	56 of 100 (Notable)
Cabin Creek	United States	Record daily precipitation	52.1 mm (2.1 in)	55 of 100 (Notable)
Belle Fourche	United States	Record daily precipitation	25.4 mm (1.0 in)	55 of 100 (Notable)
Grand Lake 1 NW	United States	Record daily precipitation	35.6 mm (1.4 in)	54 of 100 (Notable)
Belltower	United States	Record daily precipitation	27.4 mm (1.1 in)	53 of 100 (Notable)
Mizpah 4 NNW	United States	Record daily snowfall	19.8 cm (7.8 in)	53 of 100 (Notable)
Ardmore 1 NW	United States	Record daily precipitation	33.0 mm (1.3 in)	53 of 100 (Notable)
Kassler	United States	Record daily precipitation	44.2 mm (1.7 in)	52 of 100 (Notable)
Bowman	United States	Record daily precipitation	34.3 mm (1.4 in)	52 of 100 (Notable)
Okmulgee Wtr Wks	United States	Record daily precipitation	64.3 mm (2.5 in)	52 of 100 (Notable)
Ft Collins	United States	Record daily precipitation	83.8 mm (3.3 in)	51 of 100 (Notable)
Lakewood	United States	Record daily precipitation	88.9 mm (3.5 in)	51 of 100 (Notable)
Chadron 3SW	United States	Record daily precipitation	29.2 mm (1.1 in)	51 of 100 (Notable)
Powder River #2	United States	Record snow depth	61.0 cm (24.0 in)	51 of 100 (Notable)
Thrall 3SSE	United States	Record daily precipitation	40.9 mm (1.6 in)	50 of 100 (Notable)
Ridgeway 1 S	United States	Record daily precipitation	26.9 mm (1.1 in)	50 of 100 (Notable)
Northfield	United States	Record high maximum temperature	22.2 C (72.0 F)	50 of 100 (Notable)
Broadus	United States	Record daily precipitation	32.5 mm (1.3 in)	49 of 100 (Notable)
Ludlow 3 SSE	United States	Record daily precipitation	25.4 mm (1.0 in)	49 of 100 (Notable)
Curtis	United States	Record high minimum temperature	7.8 C (46.0 F)	48 of 100 (Notable)
Hill City	United States	Record daily precipitation	36.3 mm (1.4 in)	48 of 100 (Notable)
Webster 3 E	United States	Record daily precipitation	29.7 mm (1.2 in)	47 of 100 (Notable)
Canaday Steam Plt	United States	Record daily precipitation	34.5 mm (1.4 in)	47 of 100 (Notable)
Leiter 9N	United States	Record daily snowfall	25.4 cm (10.0 in)	47 of 100 (Notable)
Harrisburg 12WNW	United States	Record daily precipitation	39.1 mm (1.5 in)	46 of 100 (Notable)
Lamar 3 SSE	United States	Record daily precipitation	31.8 mm (1.3 in)	46 of 100 (Notable)
Woodstock	United States	Record high maximum temperature	19.4 C (66.9 F)	46 of 100 (Notable)
Akron Washington Co AP	United States	Record daily precipitation	45.2 mm (1.8 in)	46 of 100 (Notable)
Lake George 8 SW	United States	Record daily snowfall	22.9 cm (9.0 in)	45 of 100 (Notable)
Sedalia 4 SSE	United States	Record daily precipitation	36.1 mm (1.4 in)	45 of 100 (Notable)
Westcliffe	United States	Record daily snowfall	38.9 cm (15.3 in)	45 of 100 (Notable)

Counts by Type and Timescale

1,425 records

Records set or tied on 18 March 2003 by type: Highest daily maximum 437, Lowest daily maximum 122, Highest daily minimum 416, Lowest daily minimum 58, Heaviest daily rainfall 293, Heaviest daily snowfall 70, Deepest snow cover 29.

Records on 18 March 2003 by type
Record type	Records
Highest daily maximum	437
Lowest daily maximum	122
Highest daily minimum	416
Lowest daily minimum	58
Heaviest daily rainfall	293
Heaviest daily snowfall	70
Deepest snow cover	29

Records on 18 March 2003 by timescale: all-time 6, monthly 74, daily 1,345.

How Much Records Were Beaten By

1,152 broken records

Margins by which the 1,152 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 508.0. Ties are not counted.

Top 20 by Significance

18 March 2003

Top 20 records on 18 March 2003 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 March 2003	Georgetown, US	monthly snowfall	48.5 cm (19.1 in)	18.0 cm (7.1 in)	81 years	82 of 100 (Exceptional)
18 March 2003	Oelrichs, US	monthly rain	76.2 mm (3.0 in)	25.4 mm (1.0 in)	74 years	80 of 100 (Exceptional)
18 March 2003	Breckenridge, US	daily rain	27.9 mm (1.1 in)	17.2 mm (0.7 in)	109 years	79 of 100 (Major)
18 March 2003	Grand Lake 1 NW, US	monthly snowfall	45.7 cm (18.0 in)	15.2 cm (6.0 in)	93 years	78 of 100 (Major)
18 March 2003	Camp Crook, US	daily rain	35.6 mm (1.4 in)	21.6 mm (0.9 in)	82 years	74 of 100 (Major)
18 March 2003	Cabin Creek, US	all-time snow depth	147.3 cm (58.0 in)	50.8 cm (20.0 in)	33 years	73 of 100 (Major)
18 March 2003	Cabin Creek, US	all-time snowfall	129.5 cm (51.0 in)	33.0 cm (13.0 in)	33 years	72 of 100 (Major)
18 March 2003	Redig 11 NE, US	daily rain	43.9 mm (1.7 in)	28.7 mm (1.1 in)	69 years	69 of 100 (Major)
18 March 2003	Shawnee, US	daily rain	64.0 mm (2.5 in)	35.6 mm (1.4 in)	97 years	66 of 100 (Major)
18 March 2003	Castle Rock, US	daily snowfall	30.5 cm (12.0 in)	18.8 cm (7.4 in)	100 years	65 of 100 (Major)
18 March 2003	Georgetown, US	monthly rain	34.0 mm (1.3 in)	7.6 mm (0.30 in)	81 years	65 of 100 (Major)
18 March 2003	Hot Springs, US	daily rain	33.0 mm (1.3 in)	20.3 mm (0.8 in)	52 years	64 of 100 (Major)
18 March 2003	Powder River #2, US	all-time snowfall	53.3 cm (21.0 in)	17.7 cm (7.0 in)	3 years	64 of 100 (Major)
18 March 2003	Potter, US	daily rain	30.5 mm (1.2 in)	15.3 mm (0.6 in)	106 years	63 of 100 (Major)
18 March 2003	Ralph 1 N, US	daily rain	27.2 mm (1.1 in)	22.1 mm (0.9 in)	52 years	61 of 100 (Major)
18 March 2003	Cheyenne, US	monthly snowfall	40.4 cm (15.9 in)	11.2 cm (4.4 in)	57 years	61 of 100 (Major)
18 March 2003	Georgetown, US	monthly snow depth	53.3 cm (21.0 in)	20.3 cm (8.0 in)	4 years	60 of 100 (Major)
18 March 2003	Albion 1 N, US	daily rain	26.9 mm (1.1 in)	19.3 mm (0.8 in)	52 years	60 of 100 (Major)
18 March 2003	Dickinson Exp STN, US	monthly rain	45.7 mm (1.8 in)	11.4 mm (0.4 in)	39 years	60 of 100 (Major)
18 March 2003	Salida, US	daily snow depth	30.5 cm (12.0 in)	20.3 cm (8.0 in)	80 years	59 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

1806 to 2003

Records set or tied on this calendar date in each year from 1806 to 2003. 2003 had 1,425 records.

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

Records on 03-18 in each year
Year	Records
1806	1
1807	1
1808	1
1810	1
1814	1
1831	1
1836	1
1839	1
1845	1
1849	1
1850	5
1853	2
1859	1
1863	1
1865	2
1867	1
1868	3
1876	1
1881	1
1882	3
1884	3
1885	1
1887	1
1888	4
1890	3
1891	3
1892	2
1893	1
1894	1
1895	2
1896	10
1897	14
1898	5
1899	8
1900	14
1901	2
1902	9
1903	22
1904	9
1905	19
1906	13
1907	11
1908	8
1909	9
1910	12
1911	17
1912	16
1913	24
1914	32
1915	30
1916	73
1917	45
1918	32
1919	25
1920	39
1921	66
1922	39
1923	262
1924	96
1925	145
1926	251
1927	376
1928	301
1929	106
1930	261
1931	167
1932	212
1933	244
1934	375
1935	87
1936	699
1937	296
1938	304
1939	750
1940	444
1941	954
1942	382
1943	603
1944	321
1945	751
1946	492
1947	328
1948	296
1949	292
1950	1,042
1951	582
1952	474
1953	218
1954	355
1955	469
1956	363
1957	374
1958	347
1959	392
1960	585
1961	579
1962	284
1963	665
1964	348
1965	1,584
1966	540
1967	1,396
1968	915
1969	601
1970	533
1971	405
1972	1,028
1973	716
1974	694
1975	614
1976	538
1977	684
1978	1,003
1979	894
1980	588
1981	570
1982	1,284
1983	1,225
1984	446
1985	731
1986	626
1987	933
1988	1,001
1989	1,147
1990	1,478
1991	706
1992	789
1993	1,683
1994	960
1995	833
1996	518
1997	1,024
1998	1,144
1999	1,051
2000	524
2001	841
2002	1,562
2003	1,425
2004	1,232
2005	1,178
2006	551
2007	1,330
2008	1,066
2009	776
2010	678
2011	993
2012	3,348
2013	783
2014	701
2015	943
2016	675
2017	1,183
2018	921
2019	666
2020	672
2021	562
2022	476
2023	890
2024	843
2025	728
2026	2,870

Download the Data

Data for records on 2003-03-18: 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 100	1,123
100 to 200	22
200 to 300	4
300 to 400	1
400 to 500	1
500 to 600	1