Weather Records on 21 July 1984

764 weather records were set or tied worldwide on 21 July 1984. Highest significance: Greeneville Exp STN, US.

Key Facts for 21 July 1984

On 21 July 1984, 764 weather records were set or tied at long-record stations worldwide.
149 were record highs and 280 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 20 monthly and 738 daily.
Greeneville Exp STN set a daily record precipitation of 78.5 mm (3.1 in) on 21 July 1984.
Across 159 earlier years (1794 to 2026) the same calendar date averaged 465 records.

Record Map

764 stations

764 station records on 21 July 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 July 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Greeneville Exp STN	United States	Record daily precipitation	78.5 mm (3.1 in)	70 of 100 (Major)
Deseret	United States	Record daily precipitation	27.4 mm (1.1 in)	70 of 100 (Major)
Big Bend(Wissel Rode)	Swaziland	Record daily precipitation	38.5 mm (1.5 in)	61 of 100 (Major)
Malelane	South Africa	Record daily precipitation	52.5 mm (2.1 in)	58 of 100 (Notable)
Swaziland Ranch-Homest	Swaziland	Record daily precipitation	40.5 mm (1.6 in)	55 of 100 (Notable)
Jeedamya	Australia	Record daily precipitation	38.4 mm (1.5 in)	53 of 100 (Notable)
Krokodilbrug	South Africa	Record daily precipitation	49.5 mm (1.9 in)	53 of 100 (Notable)
Kerrs Creek 6 WNW	United States	Record daily precipitation	86.4 mm (3.4 in)	53 of 100 (Notable)
Wickenburg	United States	Record daily precipitation	46.5 mm (1.8 in)	51 of 100 (Notable)
Vardo	Norway	Record daily precipitation	35.0 mm (1.4 in)	49 of 100 (Notable)
Vasteras-Hasslo	Sweden	Record daily precipitation	92.5 mm (3.6 in)	48 of 100 (Notable)
Villaflores (Smn)	Mexico	Record daily precipitation	109.2 mm (4.3 in)	47 of 100 (Notable)
Ostrov Sosnovez	Russia	Record daily precipitation	27.9 mm (1.1 in)	47 of 100 (Notable)
Kropotkin	Russia	Record daily precipitation	64.0 mm (2.5 in)	47 of 100 (Notable)
Pineview Dam	United States	Record daily precipitation	56.9 mm (2.2 in)	47 of 100 (Notable)
Phoenix City	United States	Record daily precipitation	34.3 mm (1.4 in)	47 of 100 (Notable)
Deer Valley	United States	Record daily precipitation	34.8 mm (1.4 in)	46 of 100 (Notable)
Skukuza	South Africa	Record daily precipitation	51.0 mm (2.0 in)	44 of 100 (Notable)
Fig Tree	South Africa	Record daily precipitation	26.0 mm (1.0 in)	44 of 100 (Notable)
Lanna	Sweden	Record daily precipitation	29.9 mm (1.2 in)	44 of 100 (Notable)
Eureka	United States	Record low maximum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Goshen	United States	Record daily precipitation	77.5 mm (3.1 in)	44 of 100 (Notable)
Phillips	United States	Record daily precipitation	45.2 mm (1.8 in)	44 of 100 (Notable)
Juchitan de Zaragoza	Mexico	Record low minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Goedehoop (Bos)	South Africa	Record daily precipitation	40.5 mm (1.6 in)	43 of 100 (Notable)
Cordes	United States	Record daily precipitation	41.1 mm (1.6 in)	43 of 100 (Notable)
Great Brak River	South Africa	Record daily precipitation	44.0 mm (1.7 in)	42 of 100 (Notable)
Kristinehamn	Sweden	Record daily precipitation	29.8 mm (1.2 in)	41 of 100 (Notable)
Bondurant	United States	Record daily precipitation	25.9 mm (1.0 in)	41 of 100 (Notable)
Dejefors	Sweden	Record daily precipitation	67.5 mm (2.7 in)	40 of 100 (Notable)
Bishop AP	United States	Record low maximum temperature	28.3 C (82.9 F)	40 of 100 (Notable)
Phoenix AP	United States	Record daily precipitation	39.1 mm (1.5 in)	40 of 100 (Notable)
Mesa	United States	Record daily precipitation	27.9 mm (1.1 in)	39 of 100 (Notable)
Fitzgerald	United States	Record low maximum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Winnsboro 5 SSE	United States	Record low minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Clovis 13 N	United States	Record high minimum temperature	25.6 C (78.1 F)	39 of 100 (Notable)
Richland	United States	Record high minimum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Tranhult	Sweden	Record daily precipitation	28.0 mm (1.1 in)	38 of 100 (Notable)
Eloy 4 NE	United States	Record daily precipitation	26.7 mm (1.1 in)	38 of 100 (Notable)
Brunswick	United States	Record low minimum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Searchlight	United States	Record low maximum temperature	27.8 C (82.0 F)	38 of 100 (Notable)
Ogden Pioneer Ph	United States	Record daily precipitation	31.2 mm (1.2 in)	38 of 100 (Notable)
Poretskoye	Russia	Record high minimum temperature	19.1 C (66.4 F)	37 of 100 (Notable)
Mahlabatini (Mag)	South Africa	Record daily precipitation	52.0 mm (2.0 in)	37 of 100 (Notable)
Lewiston	United States	Record daily precipitation	64.0 mm (2.5 in)	37 of 100 (Notable)
Mc Laughlin 2SW	United States	Record high minimum temperature	23.9 C (75.0 F)	37 of 100 (Notable)
Lexington	United States	Record daily precipitation	37.8 mm (1.5 in)	37 of 100 (Notable)
Yuma WSO AP	United States	Record daily precipitation	35.8 mm (1.4 in)	37 of 100 (Notable)
Barton	Australia	Record daily precipitation	26.0 mm (1.0 in)	36 of 100 (Notable)
Mulege	Mexico	Record daily precipitation	57.9 mm (2.3 in)	36 of 100 (Notable)
Usugli	Russia	Record daily precipitation	60.6 mm (2.4 in)	36 of 100 (Notable)
Casa Grande	United States	Record low maximum temperature	31.7 C (89.1 F)	36 of 100 (Notable)
De Funiak Springs 1 E	United States	Record high minimum temperature	30.6 C (87.1 F)	36 of 100 (Notable)
Ruston la Tech	United States	Record low minimum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
Canton 4N	United States	Record low minimum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
McGill	United States	Record low maximum temperature	20.6 C (69.1 F)	36 of 100 (Notable)
Kranskop (Tnk)	South Africa	Record daily precipitation	28.0 mm (1.1 in)	35 of 100 (Notable)
Morgan 1 W	United States	Record low maximum temperature	27.8 C (82.0 F)	35 of 100 (Notable)
Calhoun 2 N	United States	Record low minimum temperature	16.1 C (61.0 F)	35 of 100 (Notable)
Hope	United States	Record low minimum temperature	13.3 C (55.9 F)	35 of 100 (Notable)

Counts by Type and Timescale

764 records

Records set or tied on 21 July 1984 by type: Highest daily maximum 46, Lowest daily maximum 123, Highest daily minimum 103, Lowest daily minimum 157, Heaviest daily rainfall 335.

Records on 21 July 1984 by type
Record type	Records
Highest daily maximum	46
Lowest daily maximum	123
Highest daily minimum	103
Lowest daily minimum	157
Heaviest daily rainfall	335
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 July 1984 by timescale: all-time 6, monthly 20, daily 738.

How Much Records Were Beaten By

609 broken records

Margins by which the 609 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 57.4. Ties are not counted.

Top 20 by Significance

21 July 1984

Top 20 records on 21 July 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 July 1984	Greeneville Exp STN, US	daily rain	78.5 mm (3.1 in)	45.7 mm (1.8 in)	80 years	70 of 100 (Major)
21 July 1984	Deseret, US	daily rain	27.4 mm (1.1 in)	21.8 mm (0.9 in)	70 years	70 of 100 (Major)
21 July 1984	Big Bend(Wissel Rode), SZ	daily rain	38.5 mm (1.5 in)	34.2 mm (1.3 in)	50 years	61 of 100 (Major)
21 July 1984	Malelane, ZA	monthly rain	52.5 mm (2.1 in)	22.0 mm (0.9 in)	43 years	58 of 100 (Notable)
21 July 1984	Swaziland Ranch-Homest, SZ	daily rain	40.5 mm (1.6 in)	37.5 mm (1.5 in)	50 years	55 of 100 (Notable)
21 July 1984	Jeedamya, AU	daily rain	38.4 mm (1.5 in)	24.2 mm (1.0 in)	24 years	53 of 100 (Notable)
21 July 1984	Krokodilbrug, ZA	daily rain	49.5 mm (1.9 in)	45.2 mm (1.8 in)	32 years	53 of 100 (Notable)
21 July 1984	Kerrs Creek 6 WNW, US	daily rain	86.4 mm (3.4 in)	57.4 mm (2.3 in)	34 years	53 of 100 (Notable)
21 July 1984	Wickenburg, US	daily rain	46.5 mm (1.8 in)	24.4 mm (1.0 in)	64 years	51 of 100 (Notable)
21 July 1984	Vardo, NO	daily rain	35.0 mm (1.4 in)	22.0 mm (0.9 in)	29 years	49 of 100 (Notable)
21 July 1984	Vasteras-Hasslo, SE	all-time rain	92.5 mm (3.6 in)	6.7 mm (0.26 in)	32 years	48 of 100 (Notable)
21 July 1984	Villaflores (Smn), MX	monthly rain	109.2 mm (4.3 in)	31.2 mm (1.2 in)	33 years	47 of 100 (Notable)
21 July 1984	Ostrov Sosnovez, RU	daily rain	27.9 mm (1.1 in)	10.2 mm (0.4 in)	73 years	47 of 100 (Notable)
21 July 1984	Kropotkin, RU	monthly rain	64.0 mm (2.5 in)	16.5 mm (0.6 in)	47 years	47 of 100 (Notable)
21 July 1984	Pineview Dam, US	monthly rain	56.9 mm (2.2 in)	20.1 mm (0.8 in)	6 years	47 of 100 (Notable)
21 July 1984	Phoenix City, US	daily rain	34.3 mm (1.4 in)	31.8 mm (1.3 in)	16 years	47 of 100 (Notable)
21 July 1984	Deer Valley, US	daily rain	34.8 mm (1.4 in)	28.4 mm (1.1 in)	30 years	46 of 100 (Notable)
21 July 1984	Skukuza, ZA	daily rain	51.0 mm (2.0 in)	43.0 mm (1.7 in)	32 years	44 of 100 (Notable)
21 July 1984	Fig Tree, ZA	daily rain	26.0 mm (1.0 in)	26.0 mm (1.0 in)	62 years	44 of 100 (Notable)
21 July 1984	Lanna, SE	daily rain	29.9 mm (1.2 in)	21.8 mm (0.9 in)	31 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

1794 to 1984

Records set or tied on this calendar date in each year from 1794 to 1984. 1984 had 764 records.

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

Records on 07-21 in each year
Year	Records
1794	1
1795	1
1796	1
1797	1
1813	2
1832	2
1837	1
1839	1
1843	1
1844	2
1854	1
1859	3
1865	3
1868	3
1872	1
1876	1
1879	2
1880	1
1881	1
1884	1
1885	1
1886	2
1888	2
1889	3
1890	2
1892	3
1893	3
1894	3
1895	1
1896	3
1897	4
1898	7
1899	2
1900	6
1901	13
1902	12
1903	10
1904	8
1905	13
1906	13
1907	12
1908	25
1909	18
1910	12
1911	37
1912	52
1913	41
1914	48
1915	81
1916	72
1917	136
1918	130
1919	51
1920	33
1921	55
1922	48
1923	132
1924	286
1925	202
1926	401
1927	191
1928	205
1929	360
1930	521
1931	549
1932	322
1933	208
1934	965
1935	236
1936	322
1937	253
1938	638
1939	415
1940	318
1941	226
1942	318
1943	253
1944	716
1945	300
1946	398
1947	795
1948	403
1949	603
1950	662
1951	427
1952	657
1953	351
1954	656
1955	582
1956	490
1957	447
1958	531
1959	940
1960	651
1961	388
1962	263
1963	470
1964	457
1965	748
1966	626
1967	313
1968	334
1969	636
1970	1,241
1971	475
1972	1,046
1973	871
1974	536
1975	380
1976	477
1977	708
1978	1,155
1979	964
1980	926
1981	1,352
1982	588
1983	1,234
1984	764
1985	554
1986	791
1987	1,025
1988	1,015
1989	973
1990	914
1991	812
1992	1,562
1993	866
1994	773
1995	1,247
1996	1,141
1997	849
1998	1,674
1999	814
2000	1,230
2001	889
2002	990
2003	1,250
2004	694
2005	1,420
2006	1,479
2007	1,145
2008	989
2009	1,306
2010	1,148
2011	1,414
2012	815
2013	526
2014	762
2015	704
2016	645
2017	433
2018	942
2019	755
2020	363
2021	574
2022	866
2023	816
2024	873
2025	881
2026	874

Download the Data

Data for records on 1984-07-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	487
10 to 20	78
20 to 30	29
30 to 40	8
40 to 50	6
50 to 60	1