Weather Records on 31 July 2018

1,135 weather records were set or tied worldwide on 31 July 2018. Highest significance: Thiruvananthapuram, IN.

Key Facts for 31 July 2018

On 31 July 2018, 1,135 weather records were set or tied at long-record stations worldwide.
851 were record highs and 142 were record lows, counting maximum and minimum temperature.
By timescale, 41 were all-time records, 41 monthly and 1,053 daily.
Thiruvananthapuram set a daily record precipitation of 90.9 mm (3.6 in) on 31 July 2018.
Across 155 earlier years (1804 to 2026) the same calendar date averaged 467 records.

Record Map

1,135 stations

1,135 station records on 31 July 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 July 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Thiruvananthapuram	India	Record daily precipitation	90.9 mm (3.6 in)	73 of 100 (Major)
Bartlett Dam	United States	Record daily precipitation	47.8 mm (1.9 in)	65 of 100 (Major)
Sogndal - Selseng	Norway	Record daily precipitation	39.0 mm (1.5 in)	62 of 100 (Major)
Vik I Sogn III	Norway	Record daily precipitation	31.4 mm (1.2 in)	62 of 100 (Major)
Detroit Metro AP	United States	Record daily precipitation	75.2 mm (3.0 in)	60 of 100 (Major)
Sauda	Norway	Record daily precipitation	64.6 mm (2.5 in)	59 of 100 (Notable)
Aurland	Norway	Record daily precipitation	29.2 mm (1.1 in)	57 of 100 (Notable)
Kvikkjokk-Arrenjarka	Sweden	Record daily precipitation	44.0 mm (1.7 in)	57 of 100 (Notable)
W Kerr Scott Resv	United States	Record daily precipitation	75.7 mm (3.0 in)	56 of 100 (Notable)
Xenia 6 SSE	United States	Record daily precipitation	71.1 mm (2.8 in)	56 of 100 (Notable)
Huddleston 4 SW	United States	Record daily precipitation	57.9 mm (2.3 in)	56 of 100 (Notable)
Winston Salem Reynolds AP	United States	Record daily precipitation	55.9 mm (2.2 in)	56 of 100 (Notable)
Bulken	Norway	Record daily precipitation	36.7 mm (1.4 in)	55 of 100 (Notable)
Maristova	Norway	Record daily precipitation	34.9 mm (1.4 in)	53 of 100 (Notable)
Fresvik	Norway	Record daily precipitation	32.0 mm (1.3 in)	53 of 100 (Notable)
Gadsden	United States	Record daily precipitation	81.3 mm (3.2 in)	52 of 100 (Notable)
Brohovo	Russia	Record daily precipitation	61.5 mm (2.4 in)	51 of 100 (Notable)
Meridian Key Fld	United States	Record daily precipitation	89.2 mm (3.5 in)	49 of 100 (Notable)
Bamberg	Germany	Record high maximum temperature	37.9 C (100.2 F)	48 of 100 (Notable)
Krasnojarsk	Russia	Record low minimum temperature	3.3 C (37.9 F)	48 of 100 (Notable)
Forse	Sweden	Record high minimum temperature	18.8 C (65.8 F)	48 of 100 (Notable)
Stiege	Germany	Record high maximum temperature	35.0 C (95.0 F)	47 of 100 (Notable)
Chemnitz	Germany	Record high minimum temperature	23.0 C (73.4 F)	47 of 100 (Notable)
Gallivare_A	Sweden	Record high minimum temperature	19.0 C (66.2 F)	47 of 100 (Notable)
Holyoke	United States	Record low minimum temperature	7.8 C (46.0 F)	47 of 100 (Notable)
Lake City 2 E	United States	Record low maximum temperature	25.0 C (77.0 F)	47 of 100 (Notable)
Prince Gallitzin Sp	United States	Record daily precipitation	62.2 mm (2.4 in)	47 of 100 (Notable)
Kautokeino	Norway	Record high minimum temperature	17.6 C (63.7 F)	46 of 100 (Notable)
Veitastrond	Norway	Record daily precipitation	40.5 mm (1.6 in)	46 of 100 (Notable)
Oestersund-Froesoen	Sweden	Record high minimum temperature	18.0 C (64.4 F)	46 of 100 (Notable)
Bowling Green 1 W	United States	Record daily precipitation	82.0 mm (3.2 in)	46 of 100 (Notable)
Flamingo Rs	United States	Record daily precipitation	61.0 mm (2.4 in)	45 of 100 (Notable)
Nenana Muni AP	United States	Record high minimum temperature	17.2 C (63.0 F)	45 of 100 (Notable)
Charlottesville Albemarle AP	United States	Record daily precipitation	76.2 mm (3.0 in)	45 of 100 (Notable)
Brookneal	United States	Record daily precipitation	59.9 mm (2.4 in)	44 of 100 (Notable)
Putbus	Germany	Record high maximum temperature	31.4 C (88.5 F)	43 of 100 (Notable)
Greenfield	United States	Record low minimum temperature	8.9 C (48.0 F)	43 of 100 (Notable)
Ortnevik	Norway	Record daily precipitation	28.1 mm (1.1 in)	42 of 100 (Notable)
Vinga	Sweden	Record high minimum temperature	22.5 C (72.5 F)	42 of 100 (Notable)
Gisela	United States	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Mormon Flat	United States	Record low minimum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Rocky Mt	United States	Record daily precipitation	66.0 mm (2.6 in)	42 of 100 (Notable)
Estacada 2 SE	United States	Record high minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Heinersreuth-Vollhof	Germany	Record high maximum temperature	36.4 C (97.5 F)	41 of 100 (Notable)
Astrakan	Russia	Record high minimum temperature	25.9 C (78.6 F)	41 of 100 (Notable)
Boras	Sweden	Record high maximum temperature	33.7 C (92.7 F)	41 of 100 (Notable)
Mecca Fire STN	United States	Record high minimum temperature	32.2 C (90.0 F)	41 of 100 (Notable)
Greensburg	United States	Record low maximum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
Carson City	United States	Record high minimum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Kirchdorf/Poel	Germany	Record high maximum temperature	37.1 C (98.8 F)	40 of 100 (Notable)
Haukedal	Norway	Record daily precipitation	51.1 mm (2.0 in)	40 of 100 (Notable)
Palmdale AP	United States	Record high minimum temperature	26.1 C (79.0 F)	40 of 100 (Notable)
Kiel-Holtenau	Germany	Record high maximum temperature	33.7 C (92.7 F)	39 of 100 (Notable)
Andoya	Norway	Record high minimum temperature	18.6 C (65.5 F)	39 of 100 (Notable)
Olands Norra Udde	Sweden	Record high maximum temperature	28.7 C (83.7 F)	39 of 100 (Notable)
Eads	United States	Record low minimum temperature	10.0 C (50.0 F)	39 of 100 (Notable)
Casey	United States	Record daily precipitation	42.4 mm (1.7 in)	39 of 100 (Notable)
N Vernon 2 ESE	United States	Record daily precipitation	60.5 mm (2.4 in)	39 of 100 (Notable)
Kyrktasjo_D	Sweden	Record daily precipitation	47.7 mm (1.9 in)	38 of 100 (Notable)
Fredonia	United States	Record low maximum temperature	25.0 C (77.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

1,135 records

Records set or tied on 31 July 2018 by type: Highest daily maximum 386, Lowest daily maximum 60, Highest daily minimum 465, Lowest daily minimum 82, Heaviest daily rainfall 142.

Records on 31 July 2018 by type
Record type	Records
Highest daily maximum	386
Lowest daily maximum	60
Highest daily minimum	465
Lowest daily minimum	82
Heaviest daily rainfall	142
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 July 2018 by timescale: all-time 41, monthly 41, daily 1,053.

How Much Records Were Beaten By

956 broken records

Margins by which the 956 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 54.1. Ties are not counted.

Top 20 by Significance

31 July 2018

Top 20 records on 31 July 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 2018	Thiruvananthapuram, IN	daily rain	90.9 mm (3.6 in)	45.9 mm (1.8 in)	96 years	73 of 100 (Major)
31 July 2018	Bartlett Dam, US	daily rain	47.8 mm (1.9 in)	33.3 mm (1.3 in)	72 years	65 of 100 (Major)
31 July 2018	Sogndal - Selseng, NO	daily rain	39.0 mm (1.5 in)	18.4 mm (0.7 in)	81 years	62 of 100 (Major)
31 July 2018	Vik I Sogn III, NO	daily rain	31.4 mm (1.2 in)	11.2 mm (0.4 in)	109 years	62 of 100 (Major)
31 July 2018	Detroit Metro AP, US	daily rain	75.2 mm (3.0 in)	49.5 mm (1.9 in)	49 years	60 of 100 (Major)
31 July 2018	Sauda, NO	daily rain	64.6 mm (2.5 in)	37.4 mm (1.5 in)	35 years	59 of 100 (Notable)
31 July 2018	Aurland, NO	daily rain	29.2 mm (1.1 in)	13.9 mm (0.5 in)	52 years	57 of 100 (Notable)
31 July 2018	Kvikkjokk-Arrenjarka, SE	daily rain	44.0 mm (1.7 in)	21.3 mm (0.8 in)	60 years	57 of 100 (Notable)
31 July 2018	W Kerr Scott Resv, US	daily rain	75.7 mm (3.0 in)	41.7 mm (1.6 in)	52 years	56 of 100 (Notable)
31 July 2018	Xenia 6 SSE, US	daily rain	71.1 mm (2.8 in)	27.9 mm (1.1 in)	80 years	56 of 100 (Notable)
31 July 2018	Huddleston 4 SW, US	daily rain	57.9 mm (2.3 in)	40.6 mm (1.6 in)	52 years	56 of 100 (Notable)
31 July 2018	Winston Salem Reynolds AP, US	daily rain	55.9 mm (2.2 in)	25.4 mm (1.0 in)	88 years	56 of 100 (Notable)
31 July 2018	Bulken, NO	daily rain	36.7 mm (1.4 in)	10.7 mm (0.4 in)	109 years	55 of 100 (Notable)
31 July 2018	Maristova, NO	daily rain	34.9 mm (1.4 in)	15.8 mm (0.6 in)	32 years	53 of 100 (Notable)
31 July 2018	Fresvik, NO	daily rain	32.0 mm (1.3 in)	22.6 mm (0.9 in)	32 years	53 of 100 (Notable)
31 July 2018	Gadsden, US	daily rain	81.3 mm (3.2 in)	49.8 mm (2.0 in)	40 years	52 of 100 (Notable)
31 July 2018	Brohovo, RU	all-time rain	61.5 mm (2.4 in)	2.2 mm (0.09 in)	67 years	51 of 100 (Notable)
31 July 2018	Meridian Key Fld, US	daily rain	89.2 mm (3.5 in)	39.7 mm (1.6 in)	59 years	49 of 100 (Notable)
31 July 2018	Bamberg, DE	daily high max	37.9 C (100.2 F)	4.0 C (7.2 F)	130 years	48 of 100 (Notable)
31 July 2018	Krasnojarsk, RU	monthly low min	3.3 C (37.9 F)	0.9 C (1.6 F)	85 years	48 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 2018

Records set or tied on this calendar date in each year from 1804 to 2018. 2018 had 1,135 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	753

Download the Data

Data for records on 2018-07-31: 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Histogram of margins by which records were beaten on 31 July 2018
Margin	Records
0 to 10	896
10 to 20	35
20 to 30	11
30 to 40	5
40 to 50	7
50 to 60	2