Weather Records on 31 July 2017

485 weather records were set or tied worldwide on 31 July 2017. Highest significance: Illalangi, AU.

Key Facts for 31 July 2017

On 31 July 2017, 485 weather records were set or tied at long-record stations worldwide.
221 were record highs and 115 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 11 monthly and 473 daily.
Illalangi set an all-time record daily precipitation of 198.0 mm (7.8 in) on 31 July 2017.
Across 155 earlier years (1804 to 2026) the same calendar date averaged 471 records.

Record Map

485 stations

485 station records on 31 July 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 July 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Illalangi	Australia	Record daily precipitation	198.0 mm (7.8 in)	100 of 100 (Exceptional)
Plant City	United States	Record daily precipitation	136.1 mm (5.4 in)	70 of 100 (Major)
Wymah (Gwandallen)	Australia	Record daily precipitation	100.0 mm (3.9 in)	69 of 100 (Major)
Lakeland Linder Rgnl AP	United States	Record daily precipitation	124.7 mm (4.9 in)	62 of 100 (Major)
Pereslavl-Zalesskij	Russia	Record daily precipitation	48.3 mm (1.9 in)	60 of 100 (Major)
Dillenburg	Germany	Record daily precipitation	39.6 mm (1.6 in)	58 of 100 (Notable)
Egvekinot	Russia	Record daily precipitation	49.0 mm (1.9 in)	58 of 100 (Notable)
Yeso 2 S	United States	Record daily precipitation	47.0 mm (1.9 in)	53 of 100 (Notable)
Im.E.K.Fedorova(Bolvanskii Nos	Russia	Record daily precipitation	32.6 mm (1.3 in)	52 of 100 (Notable)
Shenkursk	Russia	Record daily precipitation	48.8 mm (1.9 in)	52 of 100 (Notable)
Perl-Nennig	Germany	Record daily precipitation	35.8 mm (1.4 in)	51 of 100 (Notable)
Manderscheid-Sonnenhof	Germany	Record daily precipitation	30.0 mm (1.2 in)	50 of 100 (Notable)
Syracuse 1NE	United States	Record daily precipitation	104.1 mm (4.1 in)	50 of 100 (Notable)
Lubbock 9N	United States	Record daily precipitation	30.5 mm (1.2 in)	48 of 100 (Notable)
Grenfell (Corowood)	Australia	Record daily precipitation	37.2 mm (1.5 in)	46 of 100 (Notable)
Hovlandsdal	Norway	Record daily precipitation	50.7 mm (2.0 in)	44 of 100 (Notable)
Bradenton 5 ESE	United States	Record daily precipitation	97.3 mm (3.8 in)	44 of 100 (Notable)
Plant City	United States	Record low maximum temperature	26.1 C (79.0 F)	43 of 100 (Notable)
Levelland	United States	Record daily precipitation	66.3 mm (2.6 in)	43 of 100 (Notable)
Makaweli 965	United States	Record high maximum temperature	32.8 C (91.0 F)	43 of 100 (Notable)
Cochetopa Creek	United States	Record low maximum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Eastman 1 W	United States	Record low minimum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
Saluda	United States	Record low minimum temperature	14.4 C (57.9 F)	42 of 100 (Notable)
Vero Beach Intl AP	United States	Record low maximum temperature	27.2 C (81.0 F)	42 of 100 (Notable)
W Palm Beach Intl AP	United States	Record low maximum temperature	27.8 C (82.0 F)	42 of 100 (Notable)
Trier-Petrisberg	Germany	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Louisville 1 E	United States	Record low minimum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Marion	United States	Record low minimum temperature	14.4 C (57.9 F)	41 of 100 (Notable)
Dresden-Strehlen	Germany	Record high minimum temperature	19.1 C (66.4 F)	40 of 100 (Notable)
Blankenrath	Germany	Record daily precipitation	39.9 mm (1.6 in)	40 of 100 (Notable)
Roldal	Norway	Record daily precipitation	30.7 mm (1.2 in)	40 of 100 (Notable)
Orlando Sanford AP	United States	Record daily precipitation	69.6 mm (2.7 in)	40 of 100 (Notable)
Malacca	Malaysia	Record daily precipitation	94.0 mm (3.7 in)	39 of 100 (Notable)
Danville Rgnl AP	United States	Record low minimum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Nancheng	China	Record daily precipitation	76.7 mm (3.0 in)	37 of 100 (Notable)
Walsenburg 1 NW	United States	Record daily precipitation	59.2 mm (2.3 in)	37 of 100 (Notable)
Yellow Jacket 2W	United States	Record low minimum temperature	6.1 C (43.0 F)	37 of 100 (Notable)
Summerville 4W	United States	Record low minimum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
Muleshoe #1	United States	Record daily precipitation	35.6 mm (1.4 in)	37 of 100 (Notable)
Fuzhou	China	Record daily precipitation	115.6 mm (4.6 in)	36 of 100 (Notable)
Mtn Lake	United States	Record daily precipitation	50.8 mm (2.0 in)	36 of 100 (Notable)
Shelby 2 NW	United States	Record low minimum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Punta Gorda 4 ESE	United States	Record daily precipitation	64.8 mm (2.6 in)	35 of 100 (Notable)
Portales	United States	Record daily precipitation	69.6 mm (2.7 in)	35 of 100 (Notable)
Donora 1 SW	United States	Record low minimum temperature	6.7 C (44.1 F)	35 of 100 (Notable)
Bishopville 1.4 ENE	United States	Record low minimum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Devils Garden	United States	Record daily precipitation	81.3 mm (3.2 in)	34 of 100 (Routine)
Harrold 12 SSW	United States	Record daily precipitation	86.1 mm (3.4 in)	34 of 100 (Routine)
Aktobe	Kazakhstan	Record high maximum temperature	39.0 C (102.2 F)	33 of 100 (Routine)
Las Animas	United States	Record daily precipitation	35.8 mm (1.4 in)	33 of 100 (Routine)
Orovada 3 W	United States	Record high maximum temperature	40.6 C (105.1 F)	33 of 100 (Routine)
Ganzhou	China	Record daily precipitation	76.7 mm (3.0 in)	32 of 100 (Routine)
Kotlas	Russia	Record high minimum temperature	19.4 C (66.9 F)	32 of 100 (Routine)
Ulysses 3NE	United States	Record daily precipitation	47.0 mm (1.9 in)	32 of 100 (Routine)
Pecos Nm	United States	Record low maximum temperature	16.7 C (62.1 F)	32 of 100 (Routine)
Lake City 2 SE	United States	Record low minimum temperature	15.6 C (60.1 F)	32 of 100 (Routine)
Barrow AP	United States	Record high maximum temperature	19.4 C (66.9 F)	32 of 100 (Routine)
St. Brandon (St. Ra	Mauritius	Record high maximum temperature	29.6 C (85.3 F)	31 of 100 (Routine)
Ovstedal	Norway	Record daily precipitation	44.5 mm (1.8 in)	31 of 100 (Routine)
Hastings 4NE	United States	Record low maximum temperature	26.7 C (80.1 F)	31 of 100 (Routine)

Counts by Type and Timescale

485 records

Records set or tied on 31 July 2017 by type: Highest daily maximum 102, Lowest daily maximum 42, Highest daily minimum 119, Lowest daily minimum 73, Heaviest daily rainfall 149.

Records on 31 July 2017 by type
Record type	Records
Highest daily maximum	102
Lowest daily maximum	42
Highest daily minimum	119
Lowest daily minimum	73
Heaviest daily rainfall	149
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 July 2017 by timescale: all-time 1, monthly 11, daily 473.

How Much Records Were Beaten By

369 broken records

Margins by which the 369 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 90.0. Ties are not counted.

Top 20 by Significance

31 July 2017

Top 20 records on 31 July 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 2017	Illalangi, AU	all-time rain	198.0 mm (7.8 in)	90.0 mm (3.5 in)	104 years	100 of 100 (Exceptional)
31 July 2017	Plant City, US	daily rain	136.1 mm (5.4 in)	82.0 mm (3.2 in)	68 years	70 of 100 (Major)
31 July 2017	Wymah (Gwandallen), AU	monthly rain	100.0 mm (3.9 in)	45.0 mm (1.8 in)	31 years	69 of 100 (Major)
31 July 2017	Lakeland Linder Rgnl AP, US	daily rain	124.7 mm (4.9 in)	80.5 mm (3.2 in)	52 years	62 of 100 (Major)
31 July 2017	Pereslavl-Zalesskij, RU	daily rain	48.3 mm (1.9 in)	35.2 mm (1.4 in)	50 years	60 of 100 (Major)
31 July 2017	Dillenburg, DE	daily rain	39.6 mm (1.6 in)	21.0 mm (0.8 in)	56 years	58 of 100 (Notable)
31 July 2017	Egvekinot, RU	daily rain	49.0 mm (1.9 in)	36.3 mm (1.4 in)	39 years	58 of 100 (Notable)
31 July 2017	Yeso 2 S, US	daily rain	47.0 mm (1.9 in)	29.2 mm (1.1 in)	51 years	53 of 100 (Notable)
31 July 2017	Im.E.K.Fedorova(Bolvanskii Nos, RU	daily rain	32.6 mm (1.3 in)	19.7 mm (0.8 in)	24 years	52 of 100 (Notable)
31 July 2017	Shenkursk, RU	daily rain	48.8 mm (1.9 in)	23.0 mm (0.9 in)	30 years	52 of 100 (Notable)
31 July 2017	Perl-Nennig, DE	daily rain	35.8 mm (1.4 in)	19.7 mm (0.8 in)	52 years	51 of 100 (Notable)
31 July 2017	Manderscheid-Sonnenhof, DE	daily rain	30.0 mm (1.2 in)	21.2 mm (0.8 in)	39 years	50 of 100 (Notable)
31 July 2017	Syracuse 1NE, US	monthly rain	104.1 mm (4.1 in)	12.7 mm (0.5 in)	67 years	50 of 100 (Notable)
31 July 2017	Lubbock 9N, US	daily rain	30.5 mm (1.2 in)	17.8 mm (0.7 in)	92 years	48 of 100 (Notable)
31 July 2017	Grenfell (Corowood), AU	daily rain	37.2 mm (1.5 in)	24.4 mm (1.0 in)	24 years	46 of 100 (Notable)
31 July 2017	Hovlandsdal, NO	daily rain	50.7 mm (2.0 in)	14.2 mm (0.6 in)	75 years	44 of 100 (Notable)
31 July 2017	Bradenton 5 ESE, US	daily rain	97.3 mm (3.8 in)	51.3 mm (2.0 in)	32 years	44 of 100 (Notable)
31 July 2017	Plant City, US	daily low max	26.1 C (79.0 F)	0.6 C (1.1 F)	114 years	43 of 100 (Notable)
31 July 2017	Levelland, US	daily rain	66.3 mm (2.6 in)	30.5 mm (1.2 in)	35 years	43 of 100 (Notable)
31 July 2017	Makaweli 965, US	daily high max	32.8 C (91.0 F)	0.6 C (1.1 F)	95 years	43 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

1804 to 2017

Records set or tied on this calendar date in each year from 1804 to 2017. 2017 had 485 records.

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

Records on 07-31 in each year
Year	Records
1804	1
1815	1
1816	1
1828	1
1834	1
1839	1
1840	1
1841	2
1851	1
1858	2
1860	4
1863	1
1866	1
1873	2
1876	1
1879	1
1884	1
1885	1
1886	1
1887	5
1889	2
1890	2
1891	1
1892	1
1893	3
1894	2
1896	2
1897	2
1898	5
1900	1
1901	3
1902	4
1903	16
1904	12
1905	10
1906	14
1907	17
1908	22
1909	15
1910	21
1911	29
1912	14
1913	31
1914	28
1915	71
1916	63
1917	126
1918	39
1919	27
1920	168
1921	112
1922	24
1923	236
1924	97
1925	349
1926	226
1927	161
1928	145
1929	134
1930	143
1931	441
1932	314
1933	504
1934	449
1935	418
1936	548
1937	297
1938	417
1939	357
1940	415
1941	323
1942	342
1943	342
1944	312
1945	499
1946	426
1947	341
1948	341
1949	406
1950	511
1951	364
1952	472
1953	414
1954	459
1955	813
1956	574
1957	268
1958	374
1959	424
1960	622
1961	504
1962	348
1963	294
1964	637
1965	858
1966	606
1967	326
1968	637
1969	440
1970	576
1971	1,850
1972	667
1973	583
1974	363
1975	1,386
1976	530
1977	543
1978	754
1979	501
1980	1,047
1981	672
1982	767
1983	901
1984	777
1985	1,065
1986	1,021
1987	934
1988	940
1989	1,753
1990	911
1991	647
1992	1,169
1993	1,031
1994	1,207
1995	1,223
1996	1,084
1997	984
1998	1,195
1999	1,643
2000	1,001
2001	1,414
2002	1,080
2003	1,157
2004	779
2005	742
2006	1,405
2007	1,023
2008	911
2009	1,156
2010	1,485
2011	1,040
2012	712
2013	469
2014	1,000
2015	948
2016	501
2017	485
2018	1,135
2019	551
2020	1,034
2021	1,020
2022	861
2023	671
2024	748
2025	836
2026	754

Download the Data

Data for records on 2017-07-31: 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 2026-10-15 (15 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	342
20 to 40	18
40 to 60	6
60 to 80	0
80 to 100	3