Weather Records on 17 July 1930

366 weather records were set or tied worldwide on 17 July 1930. Highest significance: Millicent, AU.

Key Facts for 17 July 1930

On 17 July 1930, 366 weather records were set or tied at long-record stations worldwide.
189 were record highs and 129 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 6 monthly and 359 daily.
Millicent set a daily record precipitation of 35.6 mm (1.4 in) on 17 July 1930.
Across 163 earlier years (1793 to 2026) the same calendar date averaged 445 records.

Record Map

366 stations

366 station records on 17 July 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 July 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Millicent	Australia	Record daily precipitation	35.6 mm (1.4 in)	35 of 100 (Notable)
Winnsboro	United States	Record low maximum temperature	21.1 C (70.0 F)	32 of 100 (Routine)
Bobadah (Avoca)	Australia	Record daily precipitation	36.6 mm (1.4 in)	29 of 100 (Routine)
Vouziers	France	Record daily precipitation	26.3 mm (1.0 in)	28 of 100 (Routine)
Aseral	Norway	Record daily precipitation	46.0 mm (1.8 in)	27 of 100 (Routine)
Ust-Sugor	Russia	Record daily precipitation	51.7 mm (2.0 in)	26 of 100 (Routine)
Cape Capricorn Lighthouse	Australia	Record daily precipitation	40.6 mm (1.6 in)	25 of 100 (Routine)
Marshallville 6 S	United States	Record low maximum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Monticello	United States	Record daily precipitation	46.0 mm (1.8 in)	24 of 100 (Routine)
Chatillon-Sur-Seine	France	Record daily precipitation	28.6 mm (1.1 in)	23 of 100 (Routine)
Tarpon Spgs Sewage Plt	United States	Record daily precipitation	71.1 mm (2.8 in)	23 of 100 (Routine)
Oran-Hopital Militaire	Algeria	Record high minimum temperature	24.0 C (75.2 F)	22 of 100 (Routine)
Macon	United States	Record daily precipitation	38.4 mm (1.5 in)	22 of 100 (Routine)
Brunswick	United States	Record high maximum temperature	40.0 C (104.0 F)	22 of 100 (Routine)
Summerville 4W	United States	Record daily precipitation	81.0 mm (3.2 in)	22 of 100 (Routine)
Freiburg	Germany	Record daily precipitation	29.7 mm (1.2 in)	21 of 100 (Routine)
1 N McLeansboro	United States	Record low minimum temperature	11.1 C (52.0 F)	21 of 100 (Routine)
Britt 3E	United States	Record high maximum temperature	38.9 C (102.0 F)	21 of 100 (Routine)
Uliman (Brentwood)	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Summervale (Gundaur)	Australia	Record daily precipitation	7.6 mm (0.30 in)	20 of 100 (Routine)
Rapid City Forrest	Canada	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Americus	United States	Record low maximum temperature	25.0 C (77.0 F)	20 of 100 (Routine)
Louisville 1 E	United States	Record low maximum temperature	26.1 C (79.0 F)	20 of 100 (Routine)
Washington 1 W	United States	Record low minimum temperature	12.2 C (54.0 F)	20 of 100 (Routine)
Bay Saint Louis	United States	Record low minimum temperature	18.3 C (64.9 F)	20 of 100 (Routine)
Saint Paul	United States	Record high maximum temperature	42.8 C (109.0 F)	20 of 100 (Routine)
Greenville Dwtn AP	United States	Record low maximum temperature	24.4 C (75.9 F)	20 of 100 (Routine)
Wheeling (1)	United States	Record low minimum temperature	8.3 C (46.9 F)	20 of 100 (Routine)
Bird Rocks	Canada	Record high minimum temperature	16.1 C (61.0 F)	19 of 100 (Routine)
Palestine	United States	Record low minimum temperature	10.6 C (51.1 F)	19 of 100 (Routine)
Scottsburg	United States	Record low minimum temperature	11.1 C (52.0 F)	19 of 100 (Routine)
Madison	United States	Record high maximum temperature	40.0 C (104.0 F)	19 of 100 (Routine)
Kingstree	United States	Record daily precipitation	76.2 mm (3.0 in)	19 of 100 (Routine)
Eau Claire	United States	Record high maximum temperature	37.2 C (99.0 F)	19 of 100 (Routine)
New London	United States	Record high maximum temperature	36.7 C (98.1 F)	19 of 100 (Routine)
Lincoln UNIV Pwr Plt	United States	Record high minimum temperature	25.6 C (78.1 F)	19 of 100 (Routine)
Mildura Post Office	Australia	Record high minimum temperature	10.0 C (50.0 F)	18 of 100 (Routine)
Vestervig	Denmark	Record daily precipitation	17.8 mm (0.7 in)	18 of 100 (Routine)
Milledgeville	United States	Record low maximum temperature	22.2 C (72.0 F)	18 of 100 (Routine)
Duck Hill	United States	Record low minimum temperature	12.2 C (54.0 F)	18 of 100 (Routine)
Fayette	United States	Record low minimum temperature	12.2 C (54.0 F)	18 of 100 (Routine)
Lebanon 2W	United States	Record low minimum temperature	8.9 C (48.0 F)	18 of 100 (Routine)
Alma	United States	Record high maximum temperature	42.8 C (109.0 F)	18 of 100 (Routine)
Blair	United States	Record high maximum temperature	40.6 C (105.1 F)	18 of 100 (Routine)
Santee	United States	Record low minimum temperature	7.8 C (46.0 F)	18 of 100 (Routine)
Tekamah	United States	Record high maximum temperature	41.7 C (107.1 F)	18 of 100 (Routine)
Marietta Wtr Wks	United States	Record high maximum temperature	36.1 C (97.0 F)	18 of 100 (Routine)
Robe Comparison	Australia	Record high minimum temperature	11.1 C (52.0 F)	17 of 100 (Routine)
Wicannia (the Peak Tank)	Australia	Record daily precipitation	7.6 mm (0.30 in)	17 of 100 (Routine)
Hano_A	Sweden	Record daily precipitation	18.2 mm (0.7 in)	17 of 100 (Routine)
Brinkley	United States	Record low minimum temperature	11.7 C (53.1 F)	17 of 100 (Routine)
Bartow 1SE	United States	Record daily precipitation	20.8 mm (0.8 in)	17 of 100 (Routine)
Shelbyville Sewage Plt	United States	Record low minimum temperature	11.7 C (53.1 F)	17 of 100 (Routine)
Sioux Ctr 2 SE	United States	Record high maximum temperature	37.2 C (99.0 F)	17 of 100 (Routine)
Magnolia	United States	Record high maximum temperature	38.3 C (100.9 F)	17 of 100 (Routine)
Minden	United States	Record high maximum temperature	41.1 C (106.0 F)	17 of 100 (Routine)
Greensboro	United States	Record low maximum temperature	22.8 C (73.0 F)	17 of 100 (Routine)
Marietta Wtr Wks	United States	Record low minimum temperature	10.6 C (51.1 F)	17 of 100 (Routine)
Mellette 4 W	United States	Record high maximum temperature	37.8 C (100.0 F)	17 of 100 (Routine)
Walgett (Euroka)	Australia	Record daily precipitation	8.1 mm (0.32 in)	16 of 100 (Routine)

Counts by Type and Timescale

366 records

Records set or tied on 17 July 1930 by type: Highest daily maximum 123, Lowest daily maximum 24, Highest daily minimum 66, Lowest daily minimum 105, Heaviest daily rainfall 48.

Records on 17 July 1930 by type
Record type	Records
Highest daily maximum	123
Lowest daily maximum	24
Highest daily minimum	66
Lowest daily minimum	105
Heaviest daily rainfall	48
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 July 1930 by timescale: all-time 1, monthly 6, daily 359.

How Much Records Were Beaten By

265 broken records

Margins by which the 265 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 27.4. Ties are not counted.

Top 20 by Significance

17 July 1930

Top 20 records on 17 July 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 1930	Millicent, AU	daily rain	35.6 mm (1.4 in)	14.3 mm (0.6 in)	24 years	35 of 100 (Notable)
17 July 1930	Winnsboro, US	daily low max	21.1 C (70.0 F)	7.8 C (14.0 F)	19 years	32 of 100 (Routine)
17 July 1930	Bobadah (Avoca), AU	monthly rain	36.6 mm (1.4 in)	5.6 mm (0.22 in)	31 years	29 of 100 (Routine)
17 July 1930	Vouziers, FR	daily rain	26.3 mm (1.0 in)	11.1 mm (0.4 in)	27 years	28 of 100 (Routine)
17 July 1930	Aseral, NO	daily rain	46.0 mm (1.8 in)	17.4 mm (0.7 in)	21 years	27 of 100 (Routine)
17 July 1930	Ust-Sugor, RU	all-time rain	51.7 mm (2.0 in)	2.0 mm (0.08 in)	4 years	26 of 100 (Routine)
17 July 1930	Cape Capricorn Lighthouse, AU	daily rain	40.6 mm (1.6 in)	19.0 mm (0.7 in)	20 years	25 of 100 (Routine)
17 July 1930	Marshallville 6 S, US	daily low max	25.0 C (77.0 F)	4.4 C (7.9 F)	23 years	25 of 100 (Routine)
17 July 1930	Monticello, US	daily rain	46.0 mm (1.8 in)	24.4 mm (1.0 in)	11 years	24 of 100 (Routine)
17 July 1930	Chatillon-Sur-Seine, FR	daily rain	28.6 mm (1.1 in)	12.6 mm (0.5 in)	8 years	23 of 100 (Routine)
17 July 1930	Tarpon Spgs Sewage Plt, US	daily rain	71.1 mm (2.8 in)	26.1 mm (1.0 in)	17 years	23 of 100 (Routine)
17 July 1930	Oran-Hopital Militaire, DZ	daily high min	24.0 C (75.2 F)	1.0 C (1.8 F)	34 years	22 of 100 (Routine)
17 July 1930	Macon, US	daily rain	38.4 mm (1.5 in)	12.2 mm (0.5 in)	35 years	22 of 100 (Routine)
17 July 1930	Brunswick, US	daily high max	40.0 C (104.0 F)	3.9 C (7.0 F)	28 years	22 of 100 (Routine)
17 July 1930	Summerville 4W, US	daily rain	81.0 mm (3.2 in)	27.4 mm (1.1 in)	7 years	22 of 100 (Routine)
17 July 1930	Freiburg, DE	daily rain	29.7 mm (1.2 in)	6.2 mm (0.24 in)	33 years	21 of 100 (Routine)
17 July 1930	1 N McLeansboro, US	daily low min	11.1 C (52.0 F)	2.8 C (5.0 F)	33 years	21 of 100 (Routine)
17 July 1930	Britt 3E, US	daily high max	38.9 C (102.0 F)	4.5 C (8.1 F)	24 years	21 of 100 (Routine)
17 July 1930	Uliman (Brentwood), AU	daily rain	16.3 mm (0.6 in)	13.8 mm (0.5 in)	30 years	20 of 100 (Routine)
17 July 1930	Summervale (Gundaur), AU	daily rain	7.6 mm (0.30 in)	4.8 mm (0.19 in)	36 years	20 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

1793 to 1930

Records set or tied on this calendar date in each year from 1793 to 1930. 1930 had 366 records.

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

Records on 07-17 in each year
Year	Records
1793	1
1798	1
1799	1
1801	2
1802	1
1821	1
1827	1
1833	1
1840	1
1842	1
1845	2
1852	1
1862	1
1863	1
1865	2
1866	1
1871	1
1874	1
1875	2
1877	1
1880	1
1881	2
1882	2
1883	5
1884	1
1887	1
1888	2
1889	4
1890	4
1892	5
1893	3
1894	4
1895	1
1896	3
1897	1
1898	2
1899	4
1900	4
1901	6
1902	6
1903	13
1904	4
1905	9
1906	13
1907	12
1908	32
1909	16
1910	8
1911	52
1912	13
1913	26
1914	67
1915	71
1916	27
1917	62
1918	41
1919	45
1920	50
1921	120
1922	206
1923	105
1924	165
1925	275
1926	251
1927	118
1928	116
1929	154
1930	366
1931	492
1932	293
1933	216
1934	438
1935	245
1936	815
1937	313
1938	303
1939	540
1940	319
1941	386
1942	522
1943	321
1944	236
1945	681
1946	523
1947	505
1948	278
1949	405
1950	645
1951	356
1952	772
1953	557
1954	517
1955	512
1956	608
1957	298
1958	693
1959	631
1960	324
1961	408
1962	421
1963	223
1964	481
1965	753
1966	454
1967	965
1968	707
1969	741
1970	486
1971	790
1972	634
1973	680
1974	691
1975	775
1976	1,041
1977	764
1978	794
1979	642
1980	1,137
1981	628
1982	850
1983	1,120
1984	875
1985	483
1986	1,214
1987	1,388
1988	1,239
1989	1,289
1990	953
1991	763
1992	1,055
1993	956
1994	631
1995	917
1996	911
1997	816
1998	1,031
1999	925
2000	1,166
2001	916
2002	995
2003	1,396
2004	908
2005	1,184
2006	1,509
2007	1,218
2008	508
2009	1,218
2010	965
2011	1,101
2012	934
2013	819
2014	1,456
2015	831
2016	679
2017	398
2018	750
2019	477
2020	515
2021	625
2022	791
2023	1,060
2024	814
2025	966
2026	860

Download the Data

Data for records on 1930-07-17: 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	241
5 to 10	10
10 to 15	8
15 to 20	3
20 to 25	1
25 to 30	2