Weather Records on 20 July 2003

1,313 weather records were set or tied worldwide on 20 July 2003. Highest significance: Dutch Harbor, US.

Key Facts for 20 July 2003

On 20 July 2003, 1,313 weather records were set or tied at long-record stations worldwide.
1,016 were record highs and 171 were record lows, counting maximum and minimum temperature.
By timescale, 15 were all-time records, 31 monthly and 1,267 daily.
Dutch Harbor set a monthly record daily precipitation of 121.9 mm (4.8 in) on 20 July 2003.
Across 161 earlier years (1809 to 2026) the same calendar date averaged 454 records.

Record Map

1,313 stations

1,313 station records on 20 July 2003 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 July 2003: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dutch Harbor	United States	Record daily precipitation	121.9 mm (4.8 in)	60 of 100 (Major)
Saint Bernard	United States	Record high minimum temperature	27.2 C (81.0 F)	54 of 100 (Notable)
Yorba Linda	United States	Record low minimum temperature	6.1 C (43.0 F)	54 of 100 (Notable)
Tovdal	Norway	Record daily precipitation	64.0 mm (2.5 in)	53 of 100 (Notable)
Ruth	United States	Record daily precipitation	25.4 mm (1.0 in)	52 of 100 (Notable)
Elephant Butte Dam	United States	Record high minimum temperature	26.7 C (80.1 F)	52 of 100 (Notable)
Lindesnes Fyr	Norway	Record daily precipitation	57.1 mm (2.2 in)	51 of 100 (Notable)
Laghouat	Algeria	Record high minimum temperature	27.6 C (81.7 F)	48 of 100 (Notable)
Alsvag I Versteralen II	Norway	Record daily precipitation	37.0 mm (1.5 in)	47 of 100 (Notable)
Sonoma	United States	Record high minimum temperature	16.1 C (61.0 F)	46 of 100 (Notable)
Karlsruhe	Germany	Record high maximum temperature	37.9 C (100.2 F)	45 of 100 (Notable)
Winnemucca AP	United States	Record high minimum temperature	21.1 C (70.0 F)	45 of 100 (Notable)
San Jose de Raices	Mexico	Record high minimum temperature	21.7 C (71.1 F)	44 of 100 (Notable)
Huntington Lake	United States	Record high minimum temperature	18.9 C (66.0 F)	44 of 100 (Notable)
Beaufort Wwtp	United States	Record daily precipitation	100.3 mm (3.9 in)	44 of 100 (Notable)
San Simon	United States	Record high maximum temperature	40.6 C (105.1 F)	43 of 100 (Notable)
Jessieville	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Oakley	United States	Record high minimum temperature	21.1 C (70.0 F)	43 of 100 (Notable)
Ola	United States	Record high maximum temperature	40.0 C (104.0 F)	43 of 100 (Notable)
Mykland	Norway	Record daily precipitation	42.0 mm (1.7 in)	42 of 100 (Notable)
Kilauea 1134	United States	Record high minimum temperature	23.3 C (73.9 F)	42 of 100 (Notable)
Tizi Ouzou	Algeria	Record high minimum temperature	25.5 C (77.9 F)	41 of 100 (Notable)
Napa State Hospital	United States	Record high minimum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Brooklet 1 W	United States	Record daily precipitation	50.3 mm (2.0 in)	41 of 100 (Notable)
Gerlach	United States	Record high minimum temperature	24.4 C (75.9 F)	41 of 100 (Notable)
Luna Rs	United States	Record high maximum temperature	33.9 C (93.0 F)	41 of 100 (Notable)
Bremen-Seefahrtschule	Germany	Record high maximum temperature	32.3 C (90.1 F)	40 of 100 (Notable)
Hohenpeissenberg	Germany	Record high minimum temperature	19.2 C (66.6 F)	40 of 100 (Notable)
Clausthal-Zellerfeld	Germany	Record high maximum temperature	29.2 C (84.6 F)	40 of 100 (Notable)
Dovland	Norway	Record daily precipitation	60.3 mm (2.4 in)	40 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record high maximum temperature	33.9 C (93.0 F)	40 of 100 (Notable)
Prescott 2 NNW	United States	Record low maximum temperature	27.2 C (81.0 F)	40 of 100 (Notable)
Fallon Exp STN	United States	Record high minimum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Skagway	United States	Record high minimum temperature	13.9 C (57.0 F)	40 of 100 (Notable)
El Rodeo	Mexico	Record low minimum temperature	11.7 C (53.1 F)	39 of 100 (Notable)
Herefoss	Norway	Record daily precipitation	37.4 mm (1.5 in)	39 of 100 (Notable)
Vacaville	United States	Record high minimum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Blanca 4 NW	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
Gernsheim-Allmendfeld	Germany	Record high maximum temperature	38.1 C (100.6 F)	38 of 100 (Notable)
Prescott 2 NNW	United States	Record daily precipitation	43.9 mm (1.7 in)	38 of 100 (Notable)
Downieville	United States	Record high minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Cambridge	United States	Record high minimum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Ft Meade	United States	Record high minimum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Hamburg Fuhlsbuettel	Germany	Record high maximum temperature	33.7 C (92.7 F)	37 of 100 (Notable)
Santo Domingo	Mexico	Record low minimum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Brewton 3 SSE	United States	Record daily precipitation	58.4 mm (2.3 in)	37 of 100 (Notable)
Quincy	United States	Record high minimum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
Cortez	United States	Record high maximum temperature	37.2 C (99.0 F)	37 of 100 (Notable)
Covington 8 WNW	United States	Record daily precipitation	88.1 mm (3.5 in)	37 of 100 (Notable)
McDermitt	United States	Record high maximum temperature	38.9 C (102.0 F)	37 of 100 (Notable)
Tres Piedras	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Haines AP	United States	Record high minimum temperature	13.3 C (55.9 F)	37 of 100 (Notable)
Marnitz	Germany	Record high maximum temperature	31.3 C (88.3 F)	36 of 100 (Notable)
Oujda	Morocco	Record high maximum temperature	43.2 C (109.8 F)	36 of 100 (Notable)
Aseral	Norway	Record daily precipitation	43.5 mm (1.7 in)	36 of 100 (Notable)
Ytterhogdal	Sweden	Record high minimum temperature	17.3 C (63.1 F)	36 of 100 (Notable)
Tremonton	United States	Record high maximum temperature	38.9 C (102.0 F)	36 of 100 (Notable)
Khorog	Tajikistan	Record high maximum temperature	35.7 C (96.3 F)	35 of 100 (Notable)
Cascade 5 S	United States	Record high maximum temperature	38.3 C (100.9 F)	35 of 100 (Notable)
Amidon	United States	Record high maximum temperature	38.3 C (100.9 F)	35 of 100 (Notable)

Counts by Type and Timescale

1,313 records

Records set or tied on 20 July 2003 by type: Highest daily maximum 565, Lowest daily maximum 67, Highest daily minimum 451, Lowest daily minimum 104, Heaviest daily rainfall 126.

Records on 20 July 2003 by type
Record type	Records
Highest daily maximum	565
Lowest daily maximum	67
Highest daily minimum	451
Lowest daily minimum	104
Heaviest daily rainfall	126
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 July 2003 by timescale: all-time 15, monthly 31, daily 1,267.

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 78.5. Ties are not counted.

Top 20 by Significance

20 July 2003

Top 20 records on 20 July 2003 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 July 2003	Dutch Harbor, US	monthly rain	121.9 mm (4.8 in)	78.5 mm (3.1 in)	9 years	60 of 100 (Major)
20 July 2003	Saint Bernard, US	daily high min	27.2 C (81.0 F)	4.4 C (7.9 F)	90 years	54 of 100 (Notable)
20 July 2003	Yorba Linda, US	daily low min	6.1 C (43.0 F)	4.5 C (8.1 F)	88 years	54 of 100 (Notable)
20 July 2003	Tovdal, NO	daily rain	64.0 mm (2.5 in)	29.1 mm (1.1 in)	62 years	53 of 100 (Notable)
20 July 2003	Ruth, US	daily rain	25.4 mm (1.0 in)	22.4 mm (0.9 in)	29 years	52 of 100 (Notable)
20 July 2003	Elephant Butte Dam, US	daily high min	26.7 C (80.1 F)	3.9 C (7.0 F)	85 years	52 of 100 (Notable)
20 July 2003	Lindesnes Fyr, NO	daily rain	57.1 mm (2.2 in)	46.7 mm (1.8 in)	22 years	51 of 100 (Notable)
20 July 2003	Laghouat, DZ	daily high min	27.6 C (81.7 F)	2.6 C (4.7 F)	109 years	48 of 100 (Notable)
20 July 2003	Alsvag I Versteralen II, NO	daily rain	37.0 mm (1.5 in)	19.2 mm (0.8 in)	30 years	47 of 100 (Notable)
20 July 2003	Sonoma, US	daily high min	16.1 C (61.0 F)	1.7 C (3.1 F)	108 years	46 of 100 (Notable)
20 July 2003	Karlsruhe, DE	daily high max	37.9 C (100.2 F)	2.4 C (4.3 F)	121 years	45 of 100 (Notable)
20 July 2003	Winnemucca AP, US	daily high min	21.1 C (70.0 F)	2.2 C (4.0 F)	109 years	45 of 100 (Notable)
20 July 2003	San Jose de Raices, MX	daily high min	21.7 C (71.1 F)	6.7 C (12.1 F)	54 years	44 of 100 (Notable)
20 July 2003	Huntington Lake, US	daily high min	18.9 C (66.0 F)	4.5 C (8.1 F)	66 years	44 of 100 (Notable)
20 July 2003	Beaufort Wwtp, US	daily rain	100.3 mm (3.9 in)	15.2 mm (0.6 in)	89 years	44 of 100 (Notable)
20 July 2003	San Simon, US	daily high max	40.6 C (105.1 F)	1.2 C (2.2 F)	96 years	43 of 100 (Notable)
20 July 2003	Jessieville, US	daily rain	50.8 mm (2.0 in)	31.0 mm (1.2 in)	61 years	43 of 100 (Notable)
20 July 2003	Oakley, US	daily high min	21.1 C (70.0 F)	1.1 C (2.0 F)	109 years	43 of 100 (Notable)
20 July 2003	Ola, US	daily high max	40.0 C (104.0 F)	1.7 C (3.1 F)	101 years	43 of 100 (Notable)
20 July 2003	Mykland, NO	daily rain	42.0 mm (1.7 in)	11.5 mm (0.5 in)	66 years	42 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

1809 to 2003

Records set or tied on this calendar date in each year from 1809 to 2003. 2003 had 1,313 records.

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

Records on 07-20 in each year
Year	Records
1809	1
1810	1
1811	2
1832	2
1844	2
1850	1
1859	2
1863	1
1865	4
1866	1
1867	1
1868	1
1870	1
1872	1
1874	2
1876	1
1877	2
1879	3
1880	1
1881	2
1882	1
1883	2
1885	1
1886	2
1887	1
1888	1
1889	2
1890	5
1892	7
1893	1
1894	1
1895	1
1897	4
1898	2
1899	4
1900	9
1901	3
1902	13
1903	6
1904	10
1905	6
1906	8
1907	12
1908	31
1909	6
1910	27
1911	12
1912	33
1913	28
1914	20
1915	163
1916	117
1917	57
1918	53
1919	40
1920	16
1921	55
1922	52
1923	173
1924	112
1925	125
1926	411
1927	106
1928	366
1929	480
1930	598
1931	362
1932	338
1933	201
1934	857
1935	386
1936	358
1937	213
1938	392
1939	336
1940	325
1941	270
1942	609
1943	326
1944	470
1945	278
1946	482
1947	635
1948	385
1949	807
1950	563
1951	448
1952	488
1953	316
1954	512
1955	377
1956	545
1957	351
1958	536
1959	605
1960	758
1961	338
1962	327
1963	457
1964	416
1965	1,110
1966	469
1967	455
1968	389
1969	649
1970	890
1971	619
1972	1,062
1973	804
1974	489
1975	470
1976	580
1977	899
1978	663
1979	1,249
1980	925
1981	1,048
1982	580
1983	1,117
1984	799
1985	604
1986	848
1987	1,156
1988	1,103
1989	1,183
1990	724
1991	1,024
1992	1,137
1993	901
1994	611
1995	961
1996	1,365
1997	903
1998	1,682
1999	815
2000	1,393
2001	755
2002	986
2003	1,313
2004	978
2005	1,266
2006	1,487
2007	1,124
2008	663
2009	1,533
2010	1,154
2011	1,339
2012	817
2013	850
2014	1,000
2015	812
2016	744
2017	398
2018	930
2019	867
2020	524
2021	683
2022	1,108
2023	812
2024	737
2025	680
2026	863

Download the Data

Data for records on 2003-07-20: 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 10	938
10 to 20	17
20 to 30	9
30 to 40	4
40 to 50	1
50 to 60	1
60 to 70	0
70 to 80	1