Weather Records on 17 July 2023

1,060 weather records were set or tied worldwide on 17 July 2023. Highest significance: Ganca, AZ.

Key Facts for 17 July 2023

On 17 July 2023, 1,060 weather records were set or tied at long-record stations worldwide.
860 were record highs and 61 were record lows, counting maximum and minimum temperature.
By timescale, 31 were all-time records, 21 monthly and 1,008 daily.
Ganca set a daily record precipitation of 99.1 mm (3.9 in) on 17 July 2023.
Across 163 earlier years (1793 to 2026) the same calendar date averaged 441 records.

Record Map

1,060 stations

1,060 station records on 17 July 2023 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 July 2023: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ganca	Azerbaijan	Record daily precipitation	99.1 mm (3.9 in)	75 of 100 (Major)
Plaisance (Mauritiu	Mauritius	Record daily precipitation	55.9 mm (2.2 in)	61 of 100 (Major)
Sailes Fire Twr	United States	Record daily precipitation	78.7 mm (3.1 in)	61 of 100 (Major)
Middleton	United States	Record daily precipitation	82.0 mm (3.2 in)	59 of 100 (Notable)
Southbridge 3 SW	United States	Record daily precipitation	89.9 mm (3.5 in)	59 of 100 (Notable)
First Connecticut Lake	United States	Record daily precipitation	53.8 mm (2.1 in)	54 of 100 (Notable)
Lakeport 2	United States	Record daily precipitation	58.2 mm (2.3 in)	52 of 100 (Notable)
Lowell	United States	Record daily precipitation	45.5 mm (1.8 in)	51 of 100 (Notable)
Jefferson City Wtp	United States	Record daily precipitation	52.8 mm (2.1 in)	51 of 100 (Notable)
Kuranda Railway Station	Australia	Record daily precipitation	27.0 mm (1.1 in)	50 of 100 (Notable)
Rosebud	United States	Record daily precipitation	99.1 mm (3.9 in)	50 of 100 (Notable)
N Conway	United States	Record daily precipitation	62.2 mm (2.4 in)	49 of 100 (Notable)
Anzali	Iran	Record daily precipitation	103.6 mm (4.1 in)	47 of 100 (Notable)
Saint Louis	Senegal	Record high maximum temperature	39.1 C (102.4 F)	47 of 100 (Notable)
Norton W	United States	Record daily precipitation	72.9 mm (2.9 in)	47 of 100 (Notable)
Montrose #2	United States	Record high maximum temperature	38.9 C (102.0 F)	46 of 100 (Notable)
Blue Hill Coop	United States	Record daily precipitation	59.2 mm (2.3 in)	45 of 100 (Notable)
Marlow 1 WSW	United States	Record daily precipitation	36.8 mm (1.4 in)	45 of 100 (Notable)
Vernal	United States	Record high maximum temperature	38.3 C (100.9 F)	45 of 100 (Notable)
Low Isles Lighthouse	Australia	Record daily precipitation	38.0 mm (1.5 in)	44 of 100 (Notable)
Silverton	United States	Record high maximum temperature	30.0 C (86.0 F)	44 of 100 (Notable)
E Brimfield Lake	United States	Record daily precipitation	60.7 mm (2.4 in)	44 of 100 (Notable)
Woonsocket	United States	Record daily precipitation	71.4 mm (2.8 in)	44 of 100 (Notable)
Manti	United States	Record high maximum temperature	37.2 C (99.0 F)	44 of 100 (Notable)
Innsbruck	Austria	Record high minimum temperature	19.7 C (67.5 F)	43 of 100 (Notable)
Tortosa - Observatorio del Ebr	Spain	Record high minimum temperature	24.7 C (76.5 F)	43 of 100 (Notable)
Lake Park 3SSE	United States	Record low minimum temperature	8.9 C (48.0 F)	43 of 100 (Notable)
Mountainair	United States	Record high maximum temperature	37.2 C (99.0 F)	43 of 100 (Notable)
White Lake	United States	Record low minimum temperature	7.8 C (46.0 F)	43 of 100 (Notable)
Farmington	United States	Record high minimum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Milford	United States	Record daily precipitation	38.9 mm (1.5 in)	42 of 100 (Notable)
Winslow AP	United States	Record high maximum temperature	41.7 C (107.1 F)	42 of 100 (Notable)
Haines AP	United States	Record high minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Palmerville	Australia	Record high minimum temperature	19.7 C (67.5 F)	41 of 100 (Notable)
Dover-Foxcroft Wwtp	United States	Record daily precipitation	38.9 mm (1.5 in)	41 of 100 (Notable)
Chama	United States	Record high maximum temperature	33.3 C (91.9 F)	41 of 100 (Notable)
Socorro	United States	Record high maximum temperature	41.1 C (106.0 F)	41 of 100 (Notable)
Loa	United States	Record high minimum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Jakutsk	Russia	Record low minimum temperature	3.7 C (38.7 F)	40 of 100 (Notable)
Cedarville	United States	Record high maximum temperature	39.4 C (102.9 F)	40 of 100 (Notable)
Sierraville Rs	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Tejon Rancho	United States	Record high minimum temperature	28.3 C (82.9 F)	40 of 100 (Notable)
Edward Macdowell Lake	United States	Record daily precipitation	44.7 mm (1.8 in)	40 of 100 (Notable)
Meringa Sugar Exp STN	Australia	Record daily precipitation	26.0 mm (1.0 in)	39 of 100 (Notable)
Sauda	Norway	Record daily precipitation	34.1 mm (1.3 in)	39 of 100 (Notable)
Bridgehampton	United States	Record daily precipitation	93.7 mm (3.7 in)	39 of 100 (Notable)
Kingsville	United States	Record high maximum temperature	40.6 C (105.1 F)	39 of 100 (Notable)
Dongtai	China	Record daily precipitation	133.6 mm (5.3 in)	38 of 100 (Notable)
Varfu Omul	Romania	Record high minimum temperature	9.4 C (48.9 F)	38 of 100 (Notable)
Barkhamsted	United States	Record daily precipitation	49.8 mm (2.0 in)	38 of 100 (Notable)
Tonopah	United States	Record high maximum temperature	38.3 C (100.9 F)	38 of 100 (Notable)
Massabesic Lake	United States	Record daily precipitation	96.5 mm (3.8 in)	38 of 100 (Notable)
Caballo Dam	United States	Record high maximum temperature	41.1 C (106.0 F)	38 of 100 (Notable)
Shasta Dam	United States	Record high minimum temperature	26.7 C (80.1 F)	37 of 100 (Notable)
St Francisville	United States	Record daily precipitation	32.5 mm (1.3 in)	37 of 100 (Notable)
Manila	United States	Record high maximum temperature	35.6 C (96.1 F)	37 of 100 (Notable)
Sambalpur	India	Record daily precipitation	128.0 mm (5.0 in)	36 of 100 (Notable)
Ustica Island	Italy	Record high minimum temperature	30.0 C (86.0 F)	36 of 100 (Notable)
Madill	United States	Record daily precipitation	62.7 mm (2.5 in)	36 of 100 (Notable)
Straubing	Germany	Record high minimum temperature	18.5 C (65.3 F)	35 of 100 (Notable)

Counts by Type and Timescale

1,060 records

Records set or tied on 17 July 2023 by type: Highest daily maximum 420, Lowest daily maximum 15, Highest daily minimum 440, Lowest daily minimum 46, Heaviest daily rainfall 139.

Records on 17 July 2023 by type
Record type	Records
Highest daily maximum	420
Lowest daily maximum	15
Highest daily minimum	440
Lowest daily minimum	46
Heaviest daily rainfall	139
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 July 2023 by timescale: all-time 31, monthly 21, daily 1,008.

How Much Records Were Beaten By

797 broken records

Margins by which the 797 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 87.2. Ties are not counted.

Top 20 by Significance

17 July 2023

Top 20 records on 17 July 2023 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 2023	Ganca, AZ	daily rain	99.1 mm (3.9 in)	79.7 mm (3.1 in)	84 years	75 of 100 (Major)
17 July 2023	Plaisance (Mauritiu, MU	daily rain	55.9 mm (2.2 in)	39.0 mm (1.5 in)	46 years	61 of 100 (Major)
17 July 2023	Sailes Fire Twr, US	daily rain	78.7 mm (3.1 in)	59.4 mm (2.3 in)	68 years	61 of 100 (Major)
17 July 2023	Middleton, US	daily rain	82.0 mm (3.2 in)	53.6 mm (2.1 in)	33 years	59 of 100 (Notable)
17 July 2023	Southbridge 3 SW, US	daily rain	89.9 mm (3.5 in)	58.9 mm (2.3 in)	33 years	59 of 100 (Notable)
17 July 2023	First Connecticut Lake, US	daily rain	53.8 mm (2.1 in)	16.7 mm (0.7 in)	90 years	54 of 100 (Notable)
17 July 2023	Lakeport 2, US	daily rain	58.2 mm (2.3 in)	34.1 mm (1.3 in)	52 years	52 of 100 (Notable)
17 July 2023	Lowell, US	daily rain	45.5 mm (1.8 in)	24.7 mm (1.0 in)	76 years	51 of 100 (Notable)
17 July 2023	Jefferson City Wtp, US	daily rain	52.8 mm (2.1 in)	17.5 mm (0.7 in)	122 years	51 of 100 (Notable)
17 July 2023	Kuranda Railway Station, AU	daily rain	27.0 mm (1.1 in)	12.3 mm (0.5 in)	114 years	50 of 100 (Notable)
17 July 2023	Rosebud, US	daily rain	99.1 mm (3.9 in)	87.2 mm (3.4 in)	20 years	50 of 100 (Notable)
17 July 2023	N Conway, US	daily rain	62.2 mm (2.4 in)	36.8 mm (1.4 in)	38 years	49 of 100 (Notable)
17 July 2023	Anzali, IR	daily rain	103.6 mm (4.1 in)	80.2 mm (3.2 in)	4 years	47 of 100 (Notable)
17 July 2023	Saint Louis, SN	daily high max	39.1 C (102.4 F)	5.1 C (9.2 F)	45 years	47 of 100 (Notable)
17 July 2023	Norton W, US	daily rain	72.9 mm (2.9 in)	35.8 mm (1.4 in)	33 years	47 of 100 (Notable)
17 July 2023	Montrose #2, US	daily high max	38.9 C (102.0 F)	2.2 C (4.0 F)	97 years	46 of 100 (Notable)
17 July 2023	Blue Hill Coop, US	daily rain	59.2 mm (2.3 in)	31.0 mm (1.2 in)	33 years	45 of 100 (Notable)
17 July 2023	Marlow 1 WSW, US	daily rain	36.8 mm (1.4 in)	16.0 mm (0.6 in)	84 years	45 of 100 (Notable)
17 July 2023	Vernal, US	daily high max	38.3 C (100.9 F)	1.6 C (2.9 F)	121 years	45 of 100 (Notable)
17 July 2023	Low Isles Lighthouse, AU	daily rain	38.0 mm (1.5 in)	13.2 mm (0.5 in)	44 years	44 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

1793 to 2023

Records set or tied on this calendar date in each year from 1793 to 2023. 2023 had 1,060 records.

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

Records on 07-17 in each year
Year	Records
1793	1
1798	1
1799	1
1801	2
1802	1
1821	1
1827	1
1833	1
1840	1
1842	1
1845	2
1852	1
1862	1
1863	1
1865	2
1866	1
1871	1
1874	1
1875	2
1877	1
1880	1
1881	2
1882	2
1883	5
1884	1
1887	1
1888	2
1889	4
1890	4
1892	5
1893	3
1894	4
1895	1
1896	3
1897	1
1898	2
1899	4
1900	4
1901	6
1902	6
1903	13
1904	4
1905	9
1906	13
1907	12
1908	32
1909	16
1910	8
1911	52
1912	13
1913	26
1914	67
1915	71
1916	27
1917	62
1918	41
1919	45
1920	50
1921	120
1922	206
1923	105
1924	165
1925	275
1926	251
1927	118
1928	116
1929	154
1930	366
1931	492
1932	293
1933	216
1934	438
1935	245
1936	815
1937	313
1938	303
1939	540
1940	319
1941	386
1942	522
1943	321
1944	236
1945	681
1946	523
1947	505
1948	278
1949	405
1950	645
1951	356
1952	772
1953	557
1954	517
1955	512
1956	608
1957	298
1958	693
1959	631
1960	324
1961	408
1962	421
1963	223
1964	481
1965	753
1966	454
1967	965
1968	707
1969	741
1970	486
1971	790
1972	634
1973	680
1974	691
1975	775
1976	1,041
1977	764
1978	794
1979	642
1980	1,137
1981	628
1982	850
1983	1,120
1984	875
1985	483
1986	1,214
1987	1,388
1988	1,239
1989	1,289
1990	953
1991	763
1992	1,055
1993	956
1994	631
1995	917
1996	911
1997	816
1998	1,031
1999	925
2000	1,166
2001	916
2002	995
2003	1,396
2004	908
2005	1,184
2006	1,509
2007	1,218
2008	508
2009	1,218
2010	965
2011	1,101
2012	934
2013	819
2014	1,456
2015	831
2016	679
2017	398
2018	750
2019	477
2020	515
2021	625
2022	791
2023	1,060
2024	814
2025	966
2026	860

Download the Data

Data for records on 2023-07-17: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	772
20 to 40	18
40 to 60	3
60 to 80	2
80 to 100	2