Weather Records on 17 July 1939

540 weather records were set or tied worldwide on 17 July 1939. Highest significance: Maseskar, SE.

Key Facts for 17 July 1939

On 17 July 1939, 540 weather records were set or tied at long-record stations worldwide.
96 were record highs and 272 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 13 monthly and 523 daily.
Maseskar set a daily record precipitation of 53.5 mm (2.1 in) on 17 July 1939.
Across 163 earlier years (1793 to 2026) the same calendar date averaged 444 records.

Record Map

540 stations

540 station records on 17 July 1939 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 July 1939: highest significance records shown on the map
Station	Country	Type	Value	Significance
Maseskar	Sweden	Record daily precipitation	53.5 mm (2.1 in)	60 of 100 (Major)
Tunhovd	Norway	Record daily precipitation	44.4 mm (1.7 in)	53 of 100 (Notable)
Greylingstad (Sar)	South Africa	Record daily precipitation	34.3 mm (1.4 in)	52 of 100 (Notable)
Cedar Rapids #1	United States	Record daily precipitation	160.3 mm (6.3 in)	51 of 100 (Notable)
Lifjell	Norway	Record daily precipitation	73.3 mm (2.9 in)	48 of 100 (Notable)
Villiers (Pol)	South Africa	Record daily precipitation	36.8 mm (1.4 in)	48 of 100 (Notable)
Boras	Sweden	Record daily precipitation	43.1 mm (1.7 in)	48 of 100 (Notable)
Etah	India	Record daily precipitation	139.2 mm (5.5 in)	47 of 100 (Notable)
Hedal I Valdres	Norway	Record daily precipitation	58.5 mm (2.3 in)	46 of 100 (Notable)
Audubon	United States	Record daily precipitation	46.2 mm (1.8 in)	46 of 100 (Notable)
Hiasen I Sigdal	Norway	Record daily precipitation	65.0 mm (2.6 in)	45 of 100 (Notable)
Hano_A	Sweden	Record daily precipitation	43.4 mm (1.7 in)	44 of 100 (Notable)
Karlshamn	Sweden	Record daily precipitation	33.7 mm (1.3 in)	44 of 100 (Notable)
Khurai	India	Record daily precipitation	150.4 mm (5.9 in)	43 of 100 (Notable)
Vik I Sogn III	Norway	Record daily precipitation	26.6 mm (1.0 in)	41 of 100 (Notable)
Ulricehamn	Sweden	Record daily precipitation	37.3 mm (1.5 in)	41 of 100 (Notable)
Gopalpur	India	Record daily precipitation	148.1 mm (5.8 in)	40 of 100 (Notable)
Geilo	Norway	Record daily precipitation	46.0 mm (1.8 in)	40 of 100 (Notable)
Kristianstad	Sweden	Record daily precipitation	36.9 mm (1.5 in)	40 of 100 (Notable)
Heavitree, Estcourt	South Africa	Record daily precipitation	25.9 mm (1.0 in)	38 of 100 (Notable)
Raisen	India	Record daily precipitation	116.8 mm (4.6 in)	36 of 100 (Notable)
Bah	India	Record daily precipitation	119.9 mm (4.7 in)	36 of 100 (Notable)
Meeker 5 W	United States	Record high minimum temperature	30.0 C (86.0 F)	36 of 100 (Notable)
Gurgaon	India	Record daily precipitation	102.4 mm (4.0 in)	35 of 100 (Notable)
Vaexjoe	Sweden	Record daily precipitation	39.6 mm (1.6 in)	35 of 100 (Notable)
Leavenworth	United States	Record high minimum temperature	36.7 C (98.1 F)	35 of 100 (Notable)
Maple Plain	United States	Record low maximum temperature	17.8 C (64.0 F)	34 of 100 (Routine)
Las Vegas 2 NW	United States	Record high minimum temperature	23.3 C (73.9 F)	33 of 100 (Routine)
Wallowa	United States	Record low minimum temperature	-5.6 C (21.9 F)	33 of 100 (Routine)
Maquoketa	United States	Record daily precipitation	52.8 mm (2.1 in)	32 of 100 (Routine)
Postmyr I Drangedal	Norway	Record daily precipitation	121.4 mm (4.8 in)	31 of 100 (Routine)
De Wagendrift	South Africa	Record daily precipitation	35.6 mm (1.4 in)	31 of 100 (Routine)
Vinga	Sweden	Record daily precipitation	39.0 mm (1.5 in)	31 of 100 (Routine)
Stromsfoss Sluse	Norway	Record daily precipitation	31.0 mm (1.2 in)	30 of 100 (Routine)
Hvar	Croatia	Record high maximum temperature	34.4 C (93.9 F)	29 of 100 (Routine)
Murwara(Kathi)	India	Record daily precipitation	142.2 mm (5.6 in)	29 of 100 (Routine)
George Airport	South Africa	Record daily precipitation	33.8 mm (1.3 in)	29 of 100 (Routine)
Porthill	United States	Record low minimum temperature	2.8 C (37.0 F)	29 of 100 (Routine)
Lawrence	United States	Record high minimum temperature	27.2 C (81.0 F)	29 of 100 (Routine)
Eubank	United States	Record low maximum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Hinton 1	United States	Record low minimum temperature	9.4 C (48.9 F)	29 of 100 (Routine)
La Crosse Wb City	United States	Record low maximum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Davenport L&D 15	United States	Record daily precipitation	42.7 mm (1.7 in)	29 of 100 (Routine)
Kunch	India	Record daily precipitation	95.3 mm (3.8 in)	28 of 100 (Routine)
Rajaund	India	Record daily precipitation	97.8 mm (3.9 in)	27 of 100 (Routine)
Winterswijk	Netherlands	Record daily precipitation	36.5 mm (1.4 in)	27 of 100 (Routine)
Rauland	Norway	Record daily precipitation	46.0 mm (1.8 in)	27 of 100 (Routine)
Tuddal	Norway	Record daily precipitation	65.0 mm (2.6 in)	27 of 100 (Routine)
Ft Dodge 5NNW	United States	Record daily precipitation	66.5 mm (2.6 in)	27 of 100 (Routine)
Port Arthur	Canada	Record low minimum temperature	3.9 C (39.0 F)	26 of 100 (Routine)
Woodstock	Canada	Record low minimum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
Coeur D'Alene	United States	Record low minimum temperature	3.3 C (37.9 F)	26 of 100 (Routine)
Nashua 2 NNW	United States	Record low maximum temperature	22.8 C (73.0 F)	26 of 100 (Routine)
Waco	United States	Record low minimum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Oshkosh	United States	Record low maximum temperature	18.3 C (64.9 F)	26 of 100 (Routine)
Brantford	Canada	Record low minimum temperature	5.6 C (42.1 F)	25 of 100 (Routine)
Millwood (Bos)	South Africa	Record daily precipitation	39.1 mm (1.5 in)	25 of 100 (Routine)
Ottawa	United States	Record high minimum temperature	27.2 C (81.0 F)	25 of 100 (Routine)
Collegeville St John's	United States	Record low maximum temperature	17.2 C (63.0 F)	25 of 100 (Routine)
Farmington 3NW	United States	Record low maximum temperature	16.7 C (62.1 F)	25 of 100 (Routine)

Counts by Type and Timescale

540 records

Records set or tied on 17 July 1939 by type: Highest daily maximum 19, Lowest daily maximum 114, Highest daily minimum 77, Lowest daily minimum 158, Heaviest daily rainfall 172.

Records on 17 July 1939 by type
Record type	Records
Highest daily maximum	19
Lowest daily maximum	114
Highest daily minimum	77
Lowest daily minimum	158
Heaviest daily rainfall	172
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 July 1939 by timescale: all-time 4, monthly 13, daily 523.

How Much Records Were Beaten By

419 broken records

Margins by which the 419 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 89.4. Ties are not counted.

Top 20 by Significance

17 July 1939

Top 20 records on 17 July 1939 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 1939	Maseskar, SE	daily rain	53.5 mm (2.1 in)	27.9 mm (1.1 in)	51 years	60 of 100 (Major)
17 July 1939	Tunhovd, NO	daily rain	44.4 mm (1.7 in)	29.6 mm (1.2 in)	30 years	53 of 100 (Notable)
17 July 1939	Greylingstad (Sar), ZA	daily rain	34.3 mm (1.4 in)	34.3 mm (1.4 in)	33 years	52 of 100 (Notable)
17 July 1939	Cedar Rapids #1, US	monthly rain	160.3 mm (6.3 in)	47.0 mm (1.9 in)	22 years	51 of 100 (Notable)
17 July 1939	Lifjell, NO	monthly rain	73.3 mm (2.9 in)	22.1 mm (0.9 in)	30 years	48 of 100 (Notable)
17 July 1939	Villiers (Pol), ZA	daily rain	36.8 mm (1.4 in)	36.8 mm (1.4 in)	32 years	48 of 100 (Notable)
17 July 1939	Boras, SE	daily rain	43.1 mm (1.7 in)	23.6 mm (0.9 in)	32 years	48 of 100 (Notable)
17 July 1939	Etah, IN	daily rain	139.2 mm (5.5 in)	73.9 mm (2.9 in)	20 years	47 of 100 (Notable)
17 July 1939	Hedal I Valdres, NO	daily rain	58.5 mm (2.3 in)	32.0 mm (1.3 in)	6 years	46 of 100 (Notable)
17 July 1939	Audubon, US	daily rain	46.2 mm (1.8 in)	39.3 mm (1.5 in)	36 years	46 of 100 (Notable)
17 July 1939	Hiasen I Sigdal, NO	daily rain	65.0 mm (2.6 in)	36.9 mm (1.5 in)	6 years	45 of 100 (Notable)
17 July 1939	Hano_A, SE	daily rain	43.4 mm (1.7 in)	25.2 mm (1.0 in)	8 years	44 of 100 (Notable)
17 July 1939	Karlshamn, SE	daily rain	33.7 mm (1.3 in)	13.3 mm (0.5 in)	49 years	44 of 100 (Notable)
17 July 1939	Khurai, IN	daily rain	150.4 mm (5.9 in)	89.4 mm (3.5 in)	36 years	43 of 100 (Notable)
17 July 1939	Vik I Sogn III, NO	daily rain	26.6 mm (1.0 in)	14.4 mm (0.6 in)	29 years	41 of 100 (Notable)
17 July 1939	Ulricehamn, SE	daily rain	37.3 mm (1.5 in)	18.3 mm (0.7 in)	32 years	41 of 100 (Notable)
17 July 1939	Gopalpur, IN	daily rain	148.1 mm (5.8 in)	77.0 mm (3.0 in)	12 years	40 of 100 (Notable)
17 July 1939	Geilo, NO	daily rain	46.0 mm (1.8 in)	19.0 mm (0.7 in)	18 years	40 of 100 (Notable)
17 July 1939	Kristianstad, SE	daily rain	36.9 mm (1.5 in)	16.6 mm (0.7 in)	36 years	40 of 100 (Notable)
17 July 1939	Heavitree, Estcourt, ZA	daily rain	25.9 mm (1.0 in)	24.4 mm (1.0 in)	20 years	38 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

1793 to 1939

Records set or tied on this calendar date in each year from 1793 to 1939. 1939 had 540 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 1939-07-17: 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 20	388
20 to 40	23
40 to 60	3
60 to 80	4
80 to 100	1