Weather Records on 30 July 2017

464 weather records were set or tied worldwide on 30 July 2017. Highest significance: Novgorod, RU.

Key Facts for 30 July 2017

On 30 July 2017, 464 weather records were set or tied at long-record stations worldwide.
263 were record highs and 87 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 23 monthly and 439 daily.
Novgorod set an all-time record daily precipitation of 115.1 mm (4.5 in) on 30 July 2017.
Across 168 earlier years (1794 to 2026) the same calendar date averaged 440 records.

Record Map

464 stations

464 station records on 30 July 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 July 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Novgorod	Russia	Record daily precipitation	115.1 mm (4.5 in)	79 of 100 (Major)
Hayes Center 1NW	United States	Record daily precipitation	78.2 mm (3.1 in)	73 of 100 (Major)
Glenwood	United States	Record daily precipitation	62.5 mm (2.5 in)	62 of 100 (Major)
Jacksonville NAS	United States	Record daily precipitation	114.8 mm (4.5 in)	56 of 100 (Notable)
Klippan	Sweden	Record daily precipitation	47.5 mm (1.9 in)	53 of 100 (Notable)
Palisade	United States	Record daily precipitation	91.4 mm (3.6 in)	51 of 100 (Notable)
Cimarron 4 SW	United States	Record daily precipitation	43.9 mm (1.7 in)	51 of 100 (Notable)
Monticello	United States	Record low minimum temperature	13.9 C (57.0 F)	50 of 100 (Notable)
Westcliffe	United States	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Torreon Navajo Mission	United States	Record daily precipitation	26.4 mm (1.0 in)	45 of 100 (Notable)
Rowlesburg 1	United States	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
Westcliffe	United States	Record high minimum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Luling	United States	Record high maximum temperature	41.7 C (107.1 F)	39 of 100 (Notable)
Trinidad AP	United States	Record daily precipitation	39.1 mm (1.5 in)	39 of 100 (Notable)
San Marcos	United States	Record high maximum temperature	42.2 C (108.0 F)	38 of 100 (Notable)
Yellow Jacket 2W	United States	Record low minimum temperature	7.2 C (45.0 F)	36 of 100 (Notable)
Glen St Mary 1 W	United States	Record high minimum temperature	24.4 C (75.9 F)	36 of 100 (Notable)
Homerville 5 N	United States	Record high minimum temperature	25.6 C (78.1 F)	35 of 100 (Notable)
Helen	United States	Record low minimum temperature	8.9 C (48.0 F)	34 of 100 (Routine)
Cuero	United States	Record high maximum temperature	42.2 C (108.0 F)	34 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record daily precipitation	64.3 mm (2.5 in)	33 of 100 (Routine)
Meadville	United States	Record daily precipitation	35.8 mm (1.4 in)	33 of 100 (Routine)
Sandstone RS	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Cochetopa Creek	United States	Record low maximum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Clermont 9 S	United States	Record high minimum temperature	25.0 C (77.0 F)	32 of 100 (Routine)
Poplarville Exp STN	United States	Record low maximum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Medina 1NE	United States	Record high maximum temperature	41.1 C (106.0 F)	32 of 100 (Routine)
Natchez	United States	Record daily precipitation	59.7 mm (2.4 in)	31 of 100 (Routine)
Sydney (Observatory Hill)	Australia	Record high maximum temperature	26.5 C (79.7 F)	30 of 100 (Routine)
Shanwei	China	Record high minimum temperature	28.8 C (83.8 F)	30 of 100 (Routine)
Bad Muskau	Germany	Record high maximum temperature	32.7 C (90.9 F)	30 of 100 (Routine)
Naha	Japan	Record high minimum temperature	29.4 C (84.9 F)	30 of 100 (Routine)
Orenburg	Russia	Record high maximum temperature	37.7 C (99.9 F)	30 of 100 (Routine)
Tomelilla	Sweden	Record daily precipitation	25.1 mm (1.0 in)	30 of 100 (Routine)
Jacksonville Beach	United States	Record daily precipitation	98.8 mm (3.9 in)	30 of 100 (Routine)
Corvallis Water Bureau	United States	Record low minimum temperature	3.9 C (39.0 F)	30 of 100 (Routine)
Jacksonville	United States	Record daily precipitation	59.9 mm (2.4 in)	30 of 100 (Routine)
Austin-Camp Mabry	United States	Record high maximum temperature	41.1 C (106.0 F)	30 of 100 (Routine)
Gabo Island Lighthouse	Australia	Record high maximum temperature	21.7 C (71.1 F)	29 of 100 (Routine)
Rocky Ford 2 SE	United States	Record daily precipitation	33.3 mm (1.3 in)	29 of 100 (Routine)
Washington Sp	United States	Record high maximum temperature	40.6 C (105.1 F)	29 of 100 (Routine)
La Junta Muni AP	United States	Record daily precipitation	47.0 mm (1.9 in)	29 of 100 (Routine)
Brewarrina Hospital	Australia	Record high maximum temperature	30.2 C (86.4 F)	28 of 100 (Routine)
Katoomba (Murri St)	Australia	Record high maximum temperature	18.6 C (65.5 F)	28 of 100 (Routine)
Dresden-Strehlen	Germany	Record high maximum temperature	34.0 C (93.2 F)	28 of 100 (Routine)
Ishigaki	Japan	Record daily precipitation	59.9 mm (2.4 in)	28 of 100 (Routine)
Majuro Wbas AP	Marshall Islands	Record high minimum temperature	28.0 C (82.4 F)	28 of 100 (Routine)
Kolomna	Russia	Record daily precipitation	28.8 mm (1.1 in)	28 of 100 (Routine)
Ven	Sweden	Record daily precipitation	35.3 mm (1.4 in)	28 of 100 (Routine)
Khlong Yai	Thailand	Record high minimum temperature	27.9 C (82.2 F)	28 of 100 (Routine)
Elephant Butte Dam	United States	Record daily precipitation	26.9 mm (1.1 in)	28 of 100 (Routine)
Tahoua	Niger	Record low minimum temperature	18.6 C (65.5 F)	27 of 100 (Routine)
Jarcevo	Russia	Record daily precipitation	31.0 mm (1.2 in)	27 of 100 (Routine)
Strelka Chunja	Russia	Record high minimum temperature	13.5 C (56.3 F)	27 of 100 (Routine)
Tak	Thailand	Record high minimum temperature	27.1 C (80.8 F)	27 of 100 (Routine)
Sugarloaf Rsvr	United States	Record low maximum temperature	14.4 C (57.9 F)	27 of 100 (Routine)
Del Rio Intl AP	United States	Record high maximum temperature	41.7 C (107.1 F)	27 of 100 (Routine)
Halls Creek Airport	Australia	Record high maximum temperature	33.3 C (91.9 F)	26 of 100 (Routine)
Parramatta North (Masons Drive	Australia	Record high maximum temperature	26.8 C (80.2 F)	26 of 100 (Routine)
Hitoyoshi	Japan	Record high maximum temperature	36.2 C (97.2 F)	26 of 100 (Routine)

Counts by Type and Timescale

464 records

Records set or tied on 30 July 2017 by type: Highest daily maximum 121, Lowest daily maximum 42, Highest daily minimum 142, Lowest daily minimum 45, Heaviest daily rainfall 114.

Records on 30 July 2017 by type
Record type	Records
Highest daily maximum	121
Lowest daily maximum	42
Highest daily minimum	142
Lowest daily minimum	45
Heaviest daily rainfall	114
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 July 2017 by timescale: all-time 2, monthly 23, daily 439.

How Much Records Were Beaten By

356 broken records

Margins by which the 356 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 53.6. Ties are not counted.

Top 20 by Significance

30 July 2017

Top 20 records on 30 July 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 July 2017	Novgorod, RU	all-time rain	115.1 mm (4.5 in)	40.7 mm (1.6 in)	43 years	79 of 100 (Major)
30 July 2017	Hayes Center 1NW, US	daily rain	78.2 mm (3.1 in)	39.6 mm (1.6 in)	112 years	73 of 100 (Major)
30 July 2017	Glenwood, US	daily rain	62.5 mm (2.5 in)	43.4 mm (1.7 in)	52 years	62 of 100 (Major)
30 July 2017	Jacksonville NAS, US	monthly rain	114.8 mm (4.5 in)	24.1 mm (0.9 in)	70 years	56 of 100 (Notable)
30 July 2017	Klippan, SE	daily rain	47.5 mm (1.9 in)	29.2 mm (1.1 in)	28 years	53 of 100 (Notable)
30 July 2017	Palisade, US	daily rain	91.4 mm (3.6 in)	53.6 mm (2.1 in)	12 years	51 of 100 (Notable)
30 July 2017	Cimarron 4 SW, US	daily rain	43.9 mm (1.7 in)	23.8 mm (0.9 in)	28 years	51 of 100 (Notable)
30 July 2017	Monticello, US	daily low min	13.9 C (57.0 F)	2.2 C (4.0 F)	96 years	50 of 100 (Notable)
30 July 2017	Westcliffe, US	daily rain	30.0 mm (1.2 in)	4.1 mm (0.16 in)	108 years	45 of 100 (Notable)
30 July 2017	Torreon Navajo Mission, US	daily rain	26.4 mm (1.0 in)	15.2 mm (0.6 in)	51 years	45 of 100 (Notable)
30 July 2017	Rowlesburg 1, US	daily rain	44.5 mm (1.8 in)	3.9 mm (0.15 in)	108 years	43 of 100 (Notable)
30 July 2017	Westcliffe, US	daily high min	13.3 C (55.9 F)	0.5 C (0.9 F)	107 years	41 of 100 (Notable)
30 July 2017	Luling, US	daily high max	41.7 C (107.1 F)	0.6 C (1.1 F)	92 years	39 of 100 (Notable)
30 July 2017	Trinidad AP, US	daily rain	39.1 mm (1.5 in)	17.5 mm (0.7 in)	44 years	39 of 100 (Notable)
30 July 2017	San Marcos, US	daily high max	42.2 C (108.0 F)	0.5 C (0.9 F)	92 years	38 of 100 (Notable)
30 July 2017	Yellow Jacket 2W, US	daily low min	7.2 C (45.0 F)	3.4 C (6.1 F)	48 years	36 of 100 (Notable)
30 July 2017	Glen St Mary 1 W, US	daily high min	24.4 C (75.9 F)	0.5 C (0.9 F)	80 years	36 of 100 (Notable)
30 July 2017	Homerville 5 N, US	daily high min	25.6 C (78.1 F)	2.3 C (4.1 F)	51 years	35 of 100 (Notable)
30 July 2017	Helen, US	daily low min	8.9 C (48.0 F)	3.3 C (5.9 F)	48 years	34 of 100 (Routine)
30 July 2017	Cuero, US	daily high max	42.2 C (108.0 F)	1.6 C (2.9 F)	60 years	34 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 2017

Records set or tied on this calendar date in each year from 1794 to 2017. 2017 had 464 records.

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

Records on 07-30 in each year
Year	Records
1794	2
1797	1
1827	1
1828	2
1829	1
1830	1
1834	1
1837	2
1838	1
1840	1
1841	1
1843	1
1854	1
1857	1
1858	2
1860	4
1863	1
1867	1
1868	1
1869	2
1870	1
1874	2
1875	1
1876	1
1877	2
1879	1
1880	2
1885	3
1886	5
1887	6
1888	5
1889	1
1890	2
1891	1
1892	1
1893	10
1894	6
1895	2
1896	2
1897	4
1898	8
1899	2
1900	4
1901	11
1902	6
1903	25
1904	17
1905	29
1906	22
1907	11
1908	23
1909	30
1910	8
1911	54
1912	21
1913	34
1914	52
1915	26
1916	150
1917	93
1918	42
1919	19
1920	188
1921	193
1922	40
1923	428
1924	80
1925	275
1926	186
1927	109
1928	210
1929	221
1930	170
1931	432
1932	275
1933	451
1934	619
1935	340
1936	452
1937	245
1938	388
1939	395
1940	562
1941	371
1942	304
1943	397
1944	289
1945	299
1946	409
1947	394
1948	489
1949	512
1950	552
1951	322
1952	581
1953	345
1954	504
1955	787
1956	506
1957	289
1958	344
1959	391
1960	793
1961	511
1962	378
1963	308
1964	483
1965	978
1966	527
1967	282
1968	530
1969	506
1970	431
1971	2,319
1972	758
1973	434
1974	569
1975	1,049
1976	590
1977	641
1978	646
1979	761
1980	962
1981	851
1982	821
1983	904
1984	997
1985	1,029
1986	952
1987	1,084
1988	826
1989	1,227
1990	795
1991	734
1992	1,003
1993	965
1994	1,631
1995	1,207
1996	1,317
1997	933
1998	1,240
1999	1,456
2000	1,030
2001	1,400
2002	1,346
2003	1,163
2004	936
2005	788
2006	1,103
2007	1,160
2008	763
2009	1,328
2010	1,331
2011	1,003
2012	731
2013	737
2014	1,199
2015	682
2016	460
2017	464
2018	1,038
2019	486
2020	762
2021	839
2022	845
2023	683
2024	705
2025	869
2026	1,001

Download the Data

Data for records on 2017-07-30: 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).

Margin	Records
0 to 10	330
10 to 20	15
20 to 30	4
30 to 40	4
40 to 50	2
50 to 60	1