Weather Records on 31 July 1930

143 weather records were set or tied worldwide on 31 July 1930. Highest significance: Sable Island, CA.

Key Facts for 31 July 1930

On 31 July 1930, 143 weather records were set or tied at long-record stations worldwide.
88 were record highs and 18 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 0 monthly and 141 daily.
Sable Island set a daily record precipitation of 62.0 mm (2.4 in) on 31 July 1930.
Across 155 earlier years (1804 to 2026) the same calendar date averaged 473 records.

Record Map

143 stations

143 station records on 31 July 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 July 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sable Island	Canada	Record daily precipitation	62.0 mm (2.4 in)	45 of 100 (Notable)
Litchfield	Australia	Record daily precipitation	28.7 mm (1.1 in)	43 of 100 (Notable)
Cape Borda Comparison	Australia	Record daily precipitation	32.5 mm (1.3 in)	36 of 100 (Notable)
Smith Bay (Smiths Bay)	Australia	Record daily precipitation	25.4 mm (1.0 in)	36 of 100 (Notable)
Dale Enterprise	United States	Record high minimum temperature	24.4 C (75.9 F)	34 of 100 (Routine)
Tizi Ouzou	Algeria	Record low minimum temperature	12.0 C (53.6 F)	28 of 100 (Routine)
Eastman 1 W	United States	Record daily precipitation	43.7 mm (1.7 in)	27 of 100 (Routine)
Scottsboro	United States	Record high maximum temperature	40.0 C (104.0 F)	25 of 100 (Routine)
Heber	United States	Record high minimum temperature	20.0 C (68.0 F)	24 of 100 (Routine)
Lexington	United States	Record daily precipitation	44.5 mm (1.8 in)	23 of 100 (Routine)
Medicine Lodge	United States	Record daily precipitation	33.5 mm (1.3 in)	22 of 100 (Routine)
Yates Hydro Plt	United States	Record daily precipitation	38.1 mm (1.5 in)	21 of 100 (Routine)
San Diego Wbo	United States	Record high maximum temperature	33.3 C (91.9 F)	21 of 100 (Routine)
Vardoe	Norway	Record daily precipitation	10.3 mm (0.4 in)	20 of 100 (Routine)
Meadows	Australia	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Biser	Russia	Record daily precipitation	15.9 mm (0.6 in)	20 of 100 (Routine)
Zagreb-Gric	Croatia	Record low maximum temperature	18.7 C (65.7 F)	20 of 100 (Routine)
Crescent City 3 NNW	United States	Record high maximum temperature	32.2 C (90.0 F)	20 of 100 (Routine)
Aberdeen	United States	Record high maximum temperature	38.9 C (102.0 F)	20 of 100 (Routine)
New Braunfels	United States	Record high maximum temperature	40.0 C (104.0 F)	19 of 100 (Routine)
Edmonton	Canada	Record high minimum temperature	16.7 C (62.1 F)	18 of 100 (Routine)
Chatham	Canada	Record low minimum temperature	7.2 C (45.0 F)	18 of 100 (Routine)
Nerchinskij Zavod	Russia	Record low minimum temperature	4.9 C (40.8 F)	18 of 100 (Routine)
San Diego Wbo	United States	Record high minimum temperature	21.1 C (70.0 F)	18 of 100 (Routine)
Armour	United States	Record high minimum temperature	26.1 C (79.0 F)	18 of 100 (Routine)
Bangerang North	Australia	Record daily precipitation	13.2 mm (0.5 in)	17 of 100 (Routine)
Arad	Romania	Record daily precipitation	15.9 mm (0.6 in)	17 of 100 (Routine)
Tuscaloosa Oliver Dam	United States	Record high maximum temperature	38.9 C (102.0 F)	17 of 100 (Routine)
Louisville	United States	Record high maximum temperature	39.4 C (102.9 F)	17 of 100 (Routine)
Addison	United States	Record low minimum temperature	7.2 C (45.0 F)	17 of 100 (Routine)
Jamestown State Hosp	United States	Record high maximum temperature	36.1 C (97.0 F)	17 of 100 (Routine)
Welland	Canada	Record low minimum temperature	9.4 C (48.9 F)	16 of 100 (Routine)
Florence	United States	Record high maximum temperature	38.3 C (100.9 F)	16 of 100 (Routine)
Whitefish Pt	United States	Record high minimum temperature	16.7 C (62.1 F)	16 of 100 (Routine)
Grenfell	Canada	Record high maximum temperature	38.9 C (102.0 F)	15 of 100 (Routine)
Santa Barbara	United States	Record high minimum temperature	20.0 C (68.0 F)	15 of 100 (Routine)
Minden	United States	Record high minimum temperature	24.4 C (75.9 F)	15 of 100 (Routine)
Natchez	United States	Record high maximum temperature	37.2 C (99.0 F)	15 of 100 (Routine)
Birch Tree	United States	Record high minimum temperature	22.8 C (73.0 F)	15 of 100 (Routine)
Auburn	United States	Record low minimum temperature	7.8 C (46.0 F)	15 of 100 (Routine)
Kingscote	Australia	Record daily precipitation	16.8 mm (0.7 in)	14 of 100 (Routine)
Bella Coola	Canada	Record high minimum temperature	16.7 C (62.1 F)	14 of 100 (Routine)
Greenville	United States	Record high minimum temperature	26.1 C (79.0 F)	14 of 100 (Routine)
Alexandria	United States	Record high maximum temperature	39.4 C (102.9 F)	14 of 100 (Routine)
Austin #2	United States	Record daily precipitation	15.0 mm (0.6 in)	14 of 100 (Routine)
Clark	United States	Record high maximum temperature	36.1 C (97.0 F)	14 of 100 (Routine)
Olga 2 SE	United States	Record low minimum temperature	7.8 C (46.0 F)	14 of 100 (Routine)
Snoqualmie Falls	United States	Record low minimum temperature	6.7 C (44.1 F)	14 of 100 (Routine)
Wellsburg Wtr Trmt Pl	United States	Record high maximum temperature	36.7 C (98.1 F)	14 of 100 (Routine)
Adelaide (Morphett Vale)	Australia	Record daily precipitation	8.1 mm (0.32 in)	13 of 100 (Routine)
Old Noarlunga Post Office	Australia	Record daily precipitation	7.4 mm (0.29 in)	13 of 100 (Routine)
Clanton	United States	Record high maximum temperature	38.3 C (100.9 F)	13 of 100 (Routine)
New Smyrna Beach	United States	Record high maximum temperature	37.2 C (99.0 F)	13 of 100 (Routine)
Augusta	United States	Record daily precipitation	35.3 mm (1.4 in)	13 of 100 (Routine)
Brookhaven City	United States	Record daily precipitation	26.7 mm (1.1 in)	13 of 100 (Routine)
Enid	United States	Record daily precipitation	23.4 mm (0.9 in)	13 of 100 (Routine)
Yemassee 1 N	United States	Record daily precipitation	39.9 mm (1.6 in)	13 of 100 (Routine)
Forestburg 4 NNE	United States	Record high maximum temperature	38.3 C (100.9 F)	13 of 100 (Routine)
Penneshaw 2	Australia	Record daily precipitation	14.2 mm (0.6 in)	12 of 100 (Routine)
Clarendon	Australia	Record daily precipitation	12.7 mm (0.5 in)	12 of 100 (Routine)

Counts by Type and Timescale

143 records

Records set or tied on 31 July 1930 by type: Highest daily maximum 56, Lowest daily maximum 1, Highest daily minimum 32, Lowest daily minimum 17, Heaviest daily rainfall 37.

Records on 31 July 1930 by type
Record type	Records
Highest daily maximum	56
Lowest daily maximum	1
Highest daily minimum	32
Lowest daily minimum	17
Heaviest daily rainfall	37
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 July 1930 by timescale: all-time 2, monthly 0, daily 141.

How Much Records Were Beaten By

102 broken records

Margins by which the 102 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 38.4. Ties are not counted.

Top 20 by Significance

31 July 1930

Top 20 records on 31 July 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 July 1930	Sable Island, CA	daily rain	62.0 mm (2.4 in)	38.4 mm (1.5 in)	28 years	45 of 100 (Notable)
31 July 1930	Litchfield, AU	daily rain	28.7 mm (1.1 in)	12.4 mm (0.5 in)	39 years	43 of 100 (Notable)
31 July 1930	Cape Borda Comparison, AU	daily rain	32.5 mm (1.3 in)	10.9 mm (0.4 in)	39 years	36 of 100 (Notable)
31 July 1930	Smith Bay (Smiths Bay), AU	daily rain	25.4 mm (1.0 in)	16.8 mm (0.7 in)	27 years	36 of 100 (Notable)
31 July 1930	Dale Enterprise, US	all-time high min	24.4 C (75.9 F)	0.5 C (0.9 F)	36 years	34 of 100 (Routine)
31 July 1930	Tizi Ouzou, DZ	daily low min	12.0 C (53.6 F)	3.0 C (5.4 F)	40 years	28 of 100 (Routine)
31 July 1930	Eastman 1 W, US	daily rain	43.7 mm (1.7 in)	20.8 mm (0.8 in)	35 years	27 of 100 (Routine)
31 July 1930	Scottsboro, US	daily high max	40.0 C (104.0 F)	3.3 C (5.9 F)	33 years	25 of 100 (Routine)
31 July 1930	Heber, US	all-time high min	20.0 C (68.0 F)	0.6 C (1.1 F)	0 years	24 of 100 (Routine)
31 July 1930	Lexington, US	daily rain	44.5 mm (1.8 in)	16.6 mm (0.7 in)	27 years	23 of 100 (Routine)
31 July 1930	Medicine Lodge, US	daily rain	33.5 mm (1.3 in)	18.3 mm (0.7 in)	24 years	22 of 100 (Routine)
31 July 1930	Yates Hydro Plt, US	daily rain	38.1 mm (1.5 in)	15.2 mm (0.6 in)	27 years	21 of 100 (Routine)
31 July 1930	San Diego Wbo, US	daily high max	33.3 C (91.9 F)	2.2 C (4.0 F)	19 years	21 of 100 (Routine)
31 July 1930	Vardoe, NO	daily rain	10.3 mm (0.4 in)	7.7 mm (0.30 in)	29 years	20 of 100 (Routine)
31 July 1930	Meadows, AU	daily rain	19.3 mm (0.8 in)	5.8 mm (0.23 in)	35 years	20 of 100 (Routine)
31 July 1930	Biser, RU	daily rain	15.9 mm (0.6 in)	6.2 mm (0.24 in)	27 years	20 of 100 (Routine)
31 July 1930	Zagreb-Gric, HR	daily low max	18.7 C (65.7 F)	1.9 C (3.4 F)	36 years	20 of 100 (Routine)
31 July 1930	Crescent City 3 NNW, US	daily high max	32.2 C (90.0 F)	4.4 C (7.9 F)	12 years	20 of 100 (Routine)
31 July 1930	Aberdeen, US	daily high max	38.9 C (102.0 F)	3.3 C (5.9 F)	34 years	20 of 100 (Routine)
31 July 1930	New Braunfels, US	daily high max	40.0 C (104.0 F)	1.7 C (3.1 F)	31 years	19 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 1930

Records set or tied on this calendar date in each year from 1804 to 1930. 1930 had 143 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 1930-07-31: 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 5	86
5 to 10	5
10 to 15	5
15 to 20	4
20 to 25	1
25 to 30	0
30 to 35	0
35 to 40	1