Weather Records on 20 July 2017

398 weather records were set or tied worldwide on 20 July 2017. Highest significance: Zimnegorskij Majak, RU.

Key Facts for 20 July 2017

On 20 July 2017, 398 weather records were set or tied at long-record stations worldwide.
223 were record highs and 50 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 12 monthly and 383 daily.
Zimnegorskij Majak set a monthly record daily precipitation of 56.9 mm (2.2 in) on 20 July 2017.
Across 161 earlier years (1809 to 2026) the same calendar date averaged 460 records.

Record Map

398 stations

398 station records on 20 July 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 July 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Zimnegorskij Majak	Russia	Record daily precipitation	56.9 mm (2.2 in)	77 of 100 (Major)
Meeker	United States	Record daily precipitation	33.5 mm (1.3 in)	69 of 100 (Major)
Trempealeau Dam 6	United States	Record daily precipitation	152.4 mm (6.0 in)	69 of 100 (Major)
Dodgeville Wwtp	United States	Record daily precipitation	110.5 mm (4.4 in)	68 of 100 (Major)
Minnesota City Dam 5	United States	Record daily precipitation	129.8 mm (5.1 in)	66 of 100 (Major)
Winona Dam 5 A	United States	Record daily precipitation	114.3 mm (4.5 in)	66 of 100 (Major)
Red Wing Dam 3	United States	Record daily precipitation	115.6 mm (4.6 in)	65 of 100 (Major)
Viroqua	United States	Record daily precipitation	135.4 mm (5.3 in)	64 of 100 (Major)
La Farge	United States	Record daily precipitation	105.7 mm (4.2 in)	62 of 100 (Major)
Darlington Wwtp	United States	Record daily precipitation	106.7 mm (4.2 in)	59 of 100 (Notable)
Red Wing	United States	Record daily precipitation	104.6 mm (4.1 in)	57 of 100 (Notable)
Sparta	United States	Record daily precipitation	110.2 mm (4.3 in)	57 of 100 (Notable)
Anucino	Russia	Record daily precipitation	78.0 mm (3.1 in)	56 of 100 (Notable)
Trinidad	United States	Record high minimum temperature	23.9 C (75.0 F)	56 of 100 (Notable)
Ontario 3E	United States	Record daily precipitation	138.2 mm (5.4 in)	55 of 100 (Notable)
Cuguevka	Russia	Record daily precipitation	79.0 mm (3.1 in)	54 of 100 (Notable)
Marengo	United States	Record daily precipitation	58.7 mm (2.3 in)	54 of 100 (Notable)
La Crescent Dam 7	United States	Record daily precipitation	120.7 mm (4.8 in)	53 of 100 (Notable)
Monroe Wwtp	United States	Record daily precipitation	88.9 mm (3.5 in)	53 of 100 (Notable)
Sanders	United States	Record daily precipitation	31.8 mm (1.3 in)	50 of 100 (Notable)
Rangely 1E	United States	Record daily precipitation	28.2 mm (1.1 in)	50 of 100 (Notable)
Raton Fltr Plt	United States	Record low minimum temperature	3.3 C (37.9 F)	48 of 100 (Notable)
Lake City	United States	Record daily precipitation	95.5 mm (3.8 in)	47 of 100 (Notable)
Tracy	United States	Record daily precipitation	43.7 mm (1.7 in)	47 of 100 (Notable)
Brodhead Wwtp	United States	Record daily precipitation	74.7 mm (2.9 in)	47 of 100 (Notable)
Timiryazevskij	Russia	Record daily precipitation	87.9 mm (3.5 in)	46 of 100 (Notable)
Wabasha	United States	Record daily precipitation	127.8 mm (5.0 in)	46 of 100 (Notable)
Gays Mills	United States	Record daily precipitation	77.0 mm (3.0 in)	46 of 100 (Notable)
Freeport Wwtp	United States	Record daily precipitation	106.2 mm (4.2 in)	45 of 100 (Notable)
La Crosse Muni AP	United States	Record daily precipitation	58.4 mm (2.3 in)	44 of 100 (Notable)
Wetumpka	United States	Record high minimum temperature	25.0 C (77.0 F)	43 of 100 (Notable)
Woodland	United States	Record high minimum temperature	20.6 C (69.1 F)	42 of 100 (Notable)
Atkinson 3SW	United States	Record daily precipitation	81.3 mm (3.2 in)	42 of 100 (Notable)
Alma Dam 4	United States	Record daily precipitation	161.8 mm (6.4 in)	42 of 100 (Notable)
Westby 3ENE	United States	Record daily precipitation	100.6 mm (4.0 in)	42 of 100 (Notable)
Anapa	Russia	Record daily precipitation	103.9 mm (4.1 in)	41 of 100 (Notable)
Searchlight	United States	Record low maximum temperature	27.8 C (82.0 F)	41 of 100 (Notable)
Flaming Gorge	United States	Record daily precipitation	39.9 mm (1.6 in)	41 of 100 (Notable)
Rockford Gtr Rockford AP	United States	Record daily precipitation	62.2 mm (2.4 in)	40 of 100 (Notable)
Bryce Canyon AP	United States	Record daily precipitation	29.5 mm (1.2 in)	39 of 100 (Notable)
Kolyvan	Russia	Record daily precipitation	26.9 mm (1.1 in)	38 of 100 (Notable)
Stoughton Wwtp	United States	Record daily precipitation	62.0 mm (2.4 in)	38 of 100 (Notable)
Kaca	Russia	Record daily precipitation	39.6 mm (1.6 in)	37 of 100 (Notable)
Scottsbluff W B Heilig Fld AP	United States	Record high minimum temperature	20.0 C (68.0 F)	36 of 100 (Notable)
Essey	France	Record daily precipitation	31.5 mm (1.2 in)	35 of 100 (Notable)
Tribsees	Germany	Record daily precipitation	30.0 mm (1.2 in)	35 of 100 (Notable)
Hissar	India	Record low minimum temperature	20.1 C (68.2 F)	35 of 100 (Notable)
Ust-Maja	Russia	Record daily precipitation	31.5 mm (1.2 in)	35 of 100 (Notable)
Theilman 1SSW	United States	Record daily precipitation	81.0 mm (3.2 in)	35 of 100 (Notable)
Linjiang	China	Record daily precipitation	48.8 mm (1.9 in)	34 of 100 (Routine)
Groningen-1	Netherlands	Record daily precipitation	25.8 mm (1.0 in)	34 of 100 (Routine)
Pamjatnaja	Russia	Record daily precipitation	33.8 mm (1.3 in)	34 of 100 (Routine)
Tuapse	Russia	Record daily precipitation	73.0 mm (2.9 in)	34 of 100 (Routine)
Lisbon	United States	Record daily precipitation	56.9 mm (2.2 in)	34 of 100 (Routine)
Colorado Springs Muni AP	United States	Record high minimum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Sondrestrom	Greenland [Denmark]	Record low minimum temperature	1.4 C (34.5 F)	33 of 100 (Routine)
Maliye_Karmakuly	Russia	Record high minimum temperature	13.7 C (56.7 F)	33 of 100 (Routine)
Ola	United States	Record low minimum temperature	2.8 C (37.0 F)	33 of 100 (Routine)
O'Neill	United States	Record daily precipitation	51.8 mm (2.0 in)	33 of 100 (Routine)
Lynxville Dam 9	United States	Record daily precipitation	66.0 mm (2.6 in)	33 of 100 (Routine)

Counts by Type and Timescale

398 records

Records set or tied on 20 July 2017 by type: Highest daily maximum 77, Lowest daily maximum 21, Highest daily minimum 146, Lowest daily minimum 29, Heaviest daily rainfall 125.

Records on 20 July 2017 by type
Record type	Records
Highest daily maximum	77
Lowest daily maximum	21
Highest daily minimum	146
Lowest daily minimum	29
Heaviest daily rainfall	125
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 July 2017 by timescale: all-time 3, monthly 12, daily 383.

How Much Records Were Beaten By

299 broken records

Margins by which the 299 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.6. Ties are not counted.

Top 20 by Significance

20 July 2017

Top 20 records on 20 July 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 July 2017	Zimnegorskij Majak, RU	monthly rain	56.9 mm (2.2 in)	23.4 mm (0.9 in)	65 years	77 of 100 (Major)
20 July 2017	Meeker, US	daily rain	33.5 mm (1.3 in)	22.1 mm (0.9 in)	72 years	69 of 100 (Major)
20 July 2017	Trempealeau Dam 6, US	monthly rain	152.4 mm (6.0 in)	54.6 mm (2.1 in)	39 years	69 of 100 (Major)
20 July 2017	Dodgeville Wwtp, US	daily rain	110.5 mm (4.4 in)	44.5 mm (1.8 in)	104 years	68 of 100 (Major)
20 July 2017	Minnesota City Dam 5, US	daily rain	129.8 mm (5.1 in)	81.5 mm (3.2 in)	64 years	66 of 100 (Major)
20 July 2017	Winona Dam 5 A, US	daily rain	114.3 mm (4.5 in)	62.2 mm (2.4 in)	64 years	66 of 100 (Major)
20 July 2017	Red Wing Dam 3, US	daily rain	115.6 mm (4.6 in)	64.3 mm (2.5 in)	60 years	65 of 100 (Major)
20 July 2017	Viroqua, US	daily rain	135.4 mm (5.3 in)	61.7 mm (2.4 in)	64 years	64 of 100 (Major)
20 July 2017	La Farge, US	daily rain	105.7 mm (4.2 in)	54.9 mm (2.2 in)	67 years	62 of 100 (Major)
20 July 2017	Darlington Wwtp, US	daily rain	106.7 mm (4.2 in)	30.5 mm (1.2 in)	104 years	59 of 100 (Notable)
20 July 2017	Red Wing, US	daily rain	104.6 mm (4.1 in)	77.9 mm (3.1 in)	34 years	57 of 100 (Notable)
20 July 2017	Sparta, US	daily rain	110.2 mm (4.3 in)	46.2 mm (1.8 in)	34 years	57 of 100 (Notable)
20 July 2017	Anucino, RU	daily rain	78.0 mm (3.1 in)	43.2 mm (1.7 in)	35 years	56 of 100 (Notable)
20 July 2017	Trinidad, US	daily high min	23.9 C (75.0 F)	3.9 C (7.0 F)	112 years	56 of 100 (Notable)
20 July 2017	Ontario 3E, US	daily rain	138.2 mm (5.4 in)	89.9 mm (3.5 in)	36 years	55 of 100 (Notable)
20 July 2017	Cuguevka, RU	daily rain	79.0 mm (3.1 in)	57.3 mm (2.3 in)	26 years	54 of 100 (Notable)
20 July 2017	Marengo, US	daily rain	58.7 mm (2.3 in)	20.1 mm (0.8 in)	100 years	54 of 100 (Notable)
20 July 2017	La Crescent Dam 7, US	daily rain	120.7 mm (4.8 in)	101.6 mm (4.0 in)	20 years	53 of 100 (Notable)
20 July 2017	Monroe Wwtp, US	daily rain	88.9 mm (3.5 in)	52.1 mm (2.1 in)	55 years	53 of 100 (Notable)
20 July 2017	Sanders, US	daily rain	31.8 mm (1.3 in)	23.2 mm (0.9 in)	16 years	50 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

1809 to 2017

Records set or tied on this calendar date in each year from 1809 to 2017. 2017 had 398 records.

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

Records on 07-20 in each year
Year	Records
1809	1
1810	1
1811	2
1832	2
1844	2
1850	1
1859	2
1863	1
1865	4
1866	1
1867	1
1868	1
1870	1
1872	1
1874	2
1876	1
1877	2
1879	3
1880	1
1881	2
1882	1
1883	2
1885	1
1886	2
1887	1
1888	1
1889	2
1890	5
1892	7
1893	1
1894	1
1895	1
1897	4
1898	2
1899	4
1900	9
1901	3
1902	13
1903	6
1904	10
1905	6
1906	8
1907	12
1908	31
1909	6
1910	27
1911	12
1912	33
1913	28
1914	20
1915	163
1916	117
1917	57
1918	53
1919	40
1920	16
1921	55
1922	52
1923	173
1924	112
1925	125
1926	411
1927	106
1928	366
1929	480
1930	598
1931	362
1932	338
1933	201
1934	857
1935	386
1936	358
1937	213
1938	392
1939	336
1940	325
1941	270
1942	609
1943	326
1944	470
1945	278
1946	482
1947	635
1948	385
1949	807
1950	563
1951	448
1952	488
1953	316
1954	512
1955	377
1956	545
1957	351
1958	536
1959	605
1960	758
1961	338
1962	327
1963	457
1964	416
1965	1,110
1966	469
1967	455
1968	389
1969	649
1970	890
1971	619
1972	1,062
1973	804
1974	489
1975	470
1976	580
1977	899
1978	663
1979	1,249
1980	925
1981	1,048
1982	580
1983	1,117
1984	799
1985	604
1986	848
1987	1,156
1988	1,103
1989	1,183
1990	724
1991	1,024
1992	1,137
1993	901
1994	611
1995	961
1996	1,365
1997	903
1998	1,682
1999	815
2000	1,393
2001	755
2002	986
2003	1,313
2004	978
2005	1,266
2006	1,487
2007	1,124
2008	663
2009	1,533
2010	1,154
2011	1,339
2012	817
2013	850
2014	1,000
2015	812
2016	744
2017	398
2018	930
2019	867
2020	524
2021	683
2022	1,108
2023	812
2024	737
2025	680
2026	863

Download the Data

Data for records on 2017-07-20: 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 2026-10-15 (15 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	262
20 to 40	19
40 to 60	11
60 to 80	4
80 to 100	2
100 to 120	1