Weather Records on 17 July 1979

642 weather records were set or tied worldwide on 17 July 1979. Highest significance: Gardner, US.

Key Facts for 17 July 1979

On 17 July 1979, 642 weather records were set or tied at long-record stations worldwide.
239 were record highs and 164 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 18 monthly and 621 daily.
Gardner set a monthly record daily precipitation of 107.2 mm (4.2 in) on 17 July 1979.
Across 163 earlier years (1793 to 2026) the same calendar date averaged 444 records.

Record Map

642 stations

642 station records on 17 July 1979 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 July 1979: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gardner	United States	Record daily precipitation	107.2 mm (4.2 in)	65 of 100 (Major)
Hubbardston	United States	Record daily precipitation	108.2 mm (4.3 in)	58 of 100 (Notable)
Vine Creek	Australia	Record daily precipitation	45.0 mm (1.8 in)	53 of 100 (Notable)
Grindstone Island	Canada	Record daily precipitation	62.0 mm (2.4 in)	52 of 100 (Notable)
Nappan Cda	Canada	Record daily precipitation	69.2 mm (2.7 in)	52 of 100 (Notable)
Arnett 3NE	United States	Record daily precipitation	57.2 mm (2.3 in)	52 of 100 (Notable)
Eagles Mere	United States	Record daily precipitation	60.7 mm (2.4 in)	52 of 100 (Notable)
Readsboro 1 SE	United States	Record daily precipitation	59.2 mm (2.3 in)	52 of 100 (Notable)
Ristna	Estonia	Record daily precipitation	66.8 mm (2.6 in)	50 of 100 (Notable)
Ashburnham	United States	Record daily precipitation	68.6 mm (2.7 in)	49 of 100 (Notable)
Renfrow 1 E	United States	Record daily precipitation	67.1 mm (2.6 in)	49 of 100 (Notable)
Danbulla Forestry	Australia	Record daily precipitation	25.8 mm (1.0 in)	48 of 100 (Notable)
Great Salt Plains Dam	United States	Record daily precipitation	116.8 mm (4.6 in)	48 of 100 (Notable)
Doylestown	United States	Record daily precipitation	83.3 mm (3.3 in)	48 of 100 (Notable)
Port Aux Basques	Canada	Record daily precipitation	111.4 mm (4.4 in)	47 of 100 (Notable)
Altus Dam	United States	Record daily precipitation	78.5 mm (3.1 in)	47 of 100 (Notable)
Moncton A	Canada	Record daily precipitation	73.6 mm (2.9 in)	46 of 100 (Notable)
Sussex 1 NW	United States	Record daily precipitation	77.5 mm (3.1 in)	46 of 100 (Notable)
Anthony	United States	Record daily precipitation	61.7 mm (2.4 in)	45 of 100 (Notable)
Lakin	United States	Record daily precipitation	58.4 mm (2.3 in)	44 of 100 (Notable)
Birch Hill Dam	United States	Record daily precipitation	49.0 mm (1.9 in)	44 of 100 (Notable)
Billings	United States	Record daily precipitation	68.3 mm (2.7 in)	44 of 100 (Notable)
Sosnovo-Ozerskoe	Russia	Record daily precipitation	45.2 mm (1.8 in)	43 of 100 (Notable)
Jacksonville NAS	United States	Record daily precipitation	85.9 mm (3.4 in)	43 of 100 (Notable)
Richfield 10 WSW	United States	Record daily precipitation	63.8 mm (2.5 in)	42 of 100 (Notable)
Saint John A	Canada	Record daily precipitation	60.4 mm (2.4 in)	41 of 100 (Notable)
Sackville	Canada	Record daily precipitation	38.0 mm (1.5 in)	40 of 100 (Notable)
Baddeck	Canada	Record low maximum temperature	18.0 C (64.4 F)	39 of 100 (Notable)
Bay City Wtr Wks	United States	Record high minimum temperature	27.8 C (82.0 F)	39 of 100 (Notable)
Phillipsburg 1 SSE	United States	Record low maximum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Gothenburg	United States	Record low maximum temperature	22.2 C (72.0 F)	38 of 100 (Notable)
Vilnius	Lithuania	Record low minimum temperature	5.6 C (42.1 F)	37 of 100 (Notable)
Hostotipaquillo	Mexico	Record low minimum temperature	10.6 C (51.1 F)	37 of 100 (Notable)
Hardwick	United States	Record daily precipitation	68.6 mm (2.7 in)	37 of 100 (Notable)
Willapa Harbor	United States	Record high maximum temperature	36.7 C (98.1 F)	37 of 100 (Notable)
Deeral	Australia	Record daily precipitation	46.0 mm (1.8 in)	36 of 100 (Notable)
Barron Upper 1	Australia	Record daily precipitation	30.2 mm (1.2 in)	36 of 100 (Notable)
Ulety	Russia	Record daily precipitation	41.1 mm (1.6 in)	36 of 100 (Notable)
Clearwater	United States	Record high maximum temperature	32.2 C (90.0 F)	36 of 100 (Notable)
Gravette	United States	Record daily precipitation	63.2 mm (2.5 in)	35 of 100 (Notable)
Elkhart	United States	Record daily precipitation	49.5 mm (1.9 in)	35 of 100 (Notable)
Walters	United States	Record daily precipitation	44.5 mm (1.8 in)	35 of 100 (Notable)
Charlottetown A	Canada	Record daily precipitation	70.0 mm (2.8 in)	34 of 100 (Routine)
Franklin	United States	Record low maximum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Somerville 4 NW	United States	Record daily precipitation	47.0 mm (1.9 in)	34 of 100 (Routine)
Florida	United States	Record daily precipitation	33.0 mm (1.3 in)	34 of 100 (Routine)
Stephenville A	Canada	Record daily precipitation	84.1 mm (3.3 in)	33 of 100 (Routine)
Ripley	United States	Record high minimum temperature	22.8 C (73.0 F)	33 of 100 (Routine)
Hillsboro	United States	Record high minimum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Jefferson 3SE	United States	Record daily precipitation	69.3 mm (2.7 in)	33 of 100 (Routine)
Ely AP	United States	Record high maximum temperature	35.6 C (96.1 F)	33 of 100 (Routine)
Rucker Canyon	United States	Record daily precipitation	41.7 mm (1.6 in)	32 of 100 (Routine)
Ware	United States	Record daily precipitation	53.3 mm (2.1 in)	32 of 100 (Routine)
Two Harbors	United States	Record low minimum temperature	6.1 C (43.0 F)	32 of 100 (Routine)
N Loup	United States	Record low maximum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Beulah	United States	Record high maximum temperature	40.6 C (105.1 F)	32 of 100 (Routine)
McKenzie Rvr Rs	United States	Record high maximum temperature	41.1 C (106.0 F)	32 of 100 (Routine)
New Tripoli 4 E	United States	Record daily precipitation	35.1 mm (1.4 in)	32 of 100 (Routine)
Academy 2NE	United States	Record low minimum temperature	8.3 C (46.9 F)	32 of 100 (Routine)
Park Rapids Muni AP	United States	Record low minimum temperature	5.6 C (42.1 F)	32 of 100 (Routine)

Counts by Type and Timescale

642 records

Records set or tied on 17 July 1979 by type: Highest daily maximum 148, Lowest daily maximum 97, Highest daily minimum 91, Lowest daily minimum 67, Heaviest daily rainfall 239.

Records on 17 July 1979 by type
Record type	Records
Highest daily maximum	148
Lowest daily maximum	97
Highest daily minimum	91
Lowest daily minimum	67
Heaviest daily rainfall	239
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 July 1979 by timescale: all-time 3, monthly 18, daily 621.

How Much Records Were Beaten By

498 broken records

Margins by which the 498 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 106.6. Ties are not counted.

Top 20 by Significance

17 July 1979

Top 20 records on 17 July 1979 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 1979	Gardner, US	monthly rain	107.2 mm (4.2 in)	42.2 mm (1.7 in)	40 years	65 of 100 (Major)
17 July 1979	Hubbardston, US	monthly rain	108.2 mm (4.3 in)	32.5 mm (1.3 in)	44 years	58 of 100 (Notable)
17 July 1979	Vine Creek, AU	daily rain	45.0 mm (1.8 in)	31.5 mm (1.2 in)	30 years	53 of 100 (Notable)
17 July 1979	Grindstone Island, CA	monthly rain	62.0 mm (2.4 in)	16.8 mm (0.7 in)	29 years	52 of 100 (Notable)
17 July 1979	Nappan Cda, CA	daily rain	69.2 mm (2.7 in)	58.8 mm (2.3 in)	12 years	52 of 100 (Notable)
17 July 1979	Arnett 3NE, US	daily rain	57.2 mm (2.3 in)	31.8 mm (1.3 in)	68 years	52 of 100 (Notable)
17 July 1979	Eagles Mere, US	daily rain	60.7 mm (2.4 in)	45.0 mm (1.8 in)	32 years	52 of 100 (Notable)
17 July 1979	Readsboro 1 SE, US	daily rain	59.2 mm (2.3 in)	46.2 mm (1.8 in)	24 years	52 of 100 (Notable)
17 July 1979	Ristna, EE	daily rain	66.8 mm (2.6 in)	48.4 mm (1.9 in)	18 years	50 of 100 (Notable)
17 July 1979	Ashburnham, US	daily rain	68.6 mm (2.7 in)	52.6 mm (2.1 in)	8 years	49 of 100 (Notable)
17 July 1979	Renfrow 1 E, US	daily rain	67.1 mm (2.6 in)	55.9 mm (2.2 in)	34 years	49 of 100 (Notable)
17 July 1979	Danbulla Forestry, AU	daily rain	25.8 mm (1.0 in)	19.2 mm (0.8 in)	44 years	48 of 100 (Notable)
17 July 1979	Great Salt Plains Dam, US	daily rain	116.8 mm (4.6 in)	106.6 mm (4.2 in)	16 years	48 of 100 (Notable)
17 July 1979	Doylestown, US	daily rain	83.3 mm (3.3 in)	46.0 mm (1.8 in)	40 years	48 of 100 (Notable)
17 July 1979	Port Aux Basques, CA	all-time rain	111.4 mm (4.4 in)	1.7 mm (0.07 in)	63 years	47 of 100 (Notable)
17 July 1979	Altus Dam, US	daily rain	78.5 mm (3.1 in)	57.7 mm (2.3 in)	28 years	47 of 100 (Notable)
17 July 1979	Moncton A, CA	daily rain	73.6 mm (2.9 in)	46.7 mm (1.8 in)	9 years	46 of 100 (Notable)
17 July 1979	Sussex 1 NW, US	daily rain	77.5 mm (3.1 in)	35.3 mm (1.4 in)	37 years	46 of 100 (Notable)
17 July 1979	Anthony, US	daily rain	61.7 mm (2.4 in)	24.9 mm (1.0 in)	72 years	45 of 100 (Notable)
17 July 1979	Lakin, US	daily rain	58.4 mm (2.3 in)	37.8 mm (1.5 in)	9 years	44 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 1979

Records set or tied on this calendar date in each year from 1793 to 1979. 1979 had 642 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 1979-07-17: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	445
20 to 40	37
40 to 60	15
60 to 80	0
80 to 100	0
100 to 120	1