Weather Records on 31 July 1918

39 weather records were set or tied worldwide on 31 July 1918. Highest significance: Vineland, US.

Key Facts for 31 July 1918

On 31 July 1918, 39 weather records were set or tied at long-record stations worldwide.
3 were record highs and 15 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 33 daily.
Vineland set a monthly record daily precipitation of 161.5 mm (6.4 in) on 31 July 1918.
Across 155 earlier years (1804 to 2026) the same calendar date averaged 474 records.

Record Map

39 stations

39 station records on 31 July 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 July 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Vineland	United States	Record daily precipitation	161.5 mm (6.4 in)	58 of 100 (Notable)
Vryburg (Pol)	South Africa	Record daily precipitation	70.6 mm (2.8 in)	53 of 100 (Notable)
Newlands	South Africa	Record daily precipitation	40.6 mm (1.6 in)	51 of 100 (Notable)
Athens	United States	Record daily precipitation	82.0 mm (3.2 in)	48 of 100 (Notable)
Setauket Strong	United States	Record daily precipitation	67.6 mm (2.7 in)	33 of 100 (Routine)
Wilmington Wb City	United States	Record daily precipitation	47.2 mm (1.9 in)	32 of 100 (Routine)
Toledo Blade	United States	Record low minimum temperature	8.9 C (48.0 F)	24 of 100 (Routine)
Southampton	Canada	Record low minimum temperature	5.0 C (41.0 F)	21 of 100 (Routine)
Pella	South Africa	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Douglas	South Africa	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Barkly West (Tnk)	South Africa	Record daily precipitation	29.5 mm (1.2 in)	19 of 100 (Routine)
Atlantic City Marina	United States	Record daily precipitation	31.5 mm (1.2 in)	18 of 100 (Routine)
Umzimkulu (Tnk)	South Africa	Record daily precipitation	8.4 mm (0.33 in)	17 of 100 (Routine)
Middletown 4 W	United States	Record daily precipitation	71.1 mm (2.8 in)	17 of 100 (Routine)
Moorestown 4 E	United States	Record daily precipitation	34.3 mm (1.4 in)	17 of 100 (Routine)
Baltimore Customs House	United States	Record low maximum temperature	20.6 C (69.1 F)	17 of 100 (Routine)
Belle Isle	Canada	Record low minimum temperature	-1.1 C (30.0 F)	16 of 100 (Routine)
Arhangelsk	Russia	Record low minimum temperature	4.6 C (40.3 F)	14 of 100 (Routine)
Owen Sound	Canada	Record low minimum temperature	5.6 C (42.1 F)	13 of 100 (Routine)
Lucknow	Canada	Record low minimum temperature	2.8 C (37.0 F)	13 of 100 (Routine)
Griquatown (Tnk)	South Africa	Record daily precipitation	12.7 mm (0.5 in)	13 of 100 (Routine)
Storrs	United States	Record daily precipitation	44.5 mm (1.8 in)	13 of 100 (Routine)
Paterson	United States	Record daily precipitation	22.9 mm (0.9 in)	12 of 100 (Routine)
Somerville 4 NW	United States	Record daily precipitation	21.8 mm (0.9 in)	12 of 100 (Routine)
White Cliffs (Tarella)	Australia	Record daily precipitation	5.8 mm (0.23 in)	11 of 100 (Routine)
Moose Factory	Canada	Record low maximum temperature	10.0 C (50.0 F)	11 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record high maximum temperature	36.7 C (98.1 F)	11 of 100 (Routine)
Barrow Creek	Australia	Record daily precipitation	3.6 mm (0.14 in)	10 of 100 (Routine)
Rowlesburg 1	United States	Record daily precipitation	17.8 mm (0.7 in)	10 of 100 (Routine)
Swift Current	Canada	Record high minimum temperature	16.7 C (62.1 F)	9 of 100 (Routine)
Visby_Flygplats	Sweden	Record low maximum temperature	15.1 C (59.2 F)	6 of 100 (Routine)
Freiburg	Germany	Record low minimum temperature	8.2 C (46.8 F)	4 of 100 (Routine)
Washington	United States	Record low maximum temperature	21.1 C (70.0 F)	4 of 100 (Routine)
Madison Wb City	United States	Record low minimum temperature	11.1 C (52.0 F)	3 of 100 (Routine)
Broken Hill (Glen Lyon)	Australia	Record daily precipitation	1.3 mm (0.05 in)	2 of 100 (Routine)
Haliburton A	Canada	Record low minimum temperature	3.3 C (37.9 F)	2 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high minimum temperature	12.8 C (55.0 F)	2 of 100 (Routine)
Harrisburg - Coop	United States	Record low maximum temperature	21.1 C (70.0 F)	2 of 100 (Routine)
Setauket Strong	United States	Record low maximum temperature	20.6 C (69.1 F)	1 of 100 (Routine)

Counts by Type and Timescale

39 records

Records set or tied on 31 July 1918 by type: Highest daily maximum 1, Lowest daily maximum 6, Highest daily minimum 2, Lowest daily minimum 9, Heaviest daily rainfall 21.

Records on 31 July 1918 by type
Record type	Records
Highest daily maximum	1
Lowest daily maximum	6
Highest daily minimum	2
Lowest daily minimum	9
Heaviest daily rainfall	21
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 July 1918 by timescale: all-time 0, monthly 6, daily 33.

How Much Records Were Beaten By

32 broken records

Margins by which the 32 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 62.4. Ties are not counted.

Top 20 by Significance

31 July 1918

Top 20 records on 31 July 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 1918	Vineland, US	monthly rain	161.5 mm (6.4 in)	54.6 mm (2.1 in)	21 years	58 of 100 (Notable)
31 July 1918	Vryburg (Pol), ZA	monthly rain	70.6 mm (2.8 in)	49.5 mm (1.9 in)	0 years	53 of 100 (Notable)
31 July 1918	Newlands, ZA	monthly rain	40.6 mm (1.6 in)	14.2 mm (0.6 in)	0 years	51 of 100 (Notable)
31 July 1918	Athens, US	daily rain	82.0 mm (3.2 in)	62.4 mm (2.5 in)	8 years	48 of 100 (Notable)
31 July 1918	Setauket Strong, US	daily rain	67.6 mm (2.7 in)	35.8 mm (1.4 in)	31 years	33 of 100 (Routine)
31 July 1918	Wilmington Wb City, US	daily rain	47.2 mm (1.9 in)	27.6 mm (1.1 in)	44 years	32 of 100 (Routine)
31 July 1918	Toledo Blade, US	monthly low min	8.9 C (48.0 F)	0.5 C (0.9 F)	30 years	24 of 100 (Routine)
31 July 1918	Southampton, CA	daily low min	5.0 C (41.0 F)	2.2 C (4.0 F)	42 years	21 of 100 (Routine)
31 July 1918	Pella, ZA	daily rain	12.7 mm (0.5 in)	12.7 mm (0.5 in)	39 years	20 of 100 (Routine)
31 July 1918	Douglas, ZA	monthly rain	21.3 mm (0.8 in)	1.0 mm (0.04 in)	18 years	20 of 100 (Routine)
31 July 1918	Barkly West (Tnk), ZA	monthly rain	29.5 mm (1.2 in)	3.1 mm (0.12 in)	0 years	19 of 100 (Routine)
31 July 1918	Atlantic City Marina, US	daily rain	31.5 mm (1.2 in)	7.6 mm (0.30 in)	31 years	18 of 100 (Routine)
31 July 1918	Umzimkulu (Tnk), ZA	daily rain	8.4 mm (0.33 in)	5.6 mm (0.22 in)	17 years	17 of 100 (Routine)
31 July 1918	Middletown 4 W, US	daily rain	71.1 mm (2.8 in)	5.1 mm (0.20 in)	30 years	17 of 100 (Routine)
31 July 1918	Moorestown 4 E, US	daily rain	34.3 mm (1.4 in)	5.9 mm (0.23 in)	28 years	17 of 100 (Routine)
31 July 1918	Baltimore Customs House, US	daily low max	20.6 C (69.1 F)	0.5 C (0.9 F)	41 years	17 of 100 (Routine)
31 July 1918	Belle Isle, CA	daily low min	-1.1 C (30.0 F)	3.9 C (7.0 F)	4 years	16 of 100 (Routine)
31 July 1918	Arhangelsk, RU	daily low min	4.6 C (40.3 F)	2.0 C (3.6 F)	23 years	14 of 100 (Routine)
31 July 1918	Owen Sound, CA	daily low min	5.6 C (42.1 F)	0.5 C (0.9 F)	26 years	13 of 100 (Routine)
31 July 1918	Lucknow, CA	daily low min	2.8 C (37.0 F)	1.1 C (2.0 F)	26 years	13 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

1804 to 1918

Records set or tied on this calendar date in each year from 1804 to 1918. 1918 had 39 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 1918-07-31: 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 2026-10-17 (17 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 10	25
10 to 20	2
20 to 30	1
30 to 40	1
40 to 50	1
50 to 60	1
60 to 70	1