Weather Records on 15 April 1984

612 weather records were set or tied worldwide on 15 April 1984. Highest significance: Powell Creek, AU.

Key Facts for 15 April 1984

On 15 April 1984, 612 weather records were set or tied at long-record stations worldwide.
285 were record highs and 97 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 18 monthly and 594 daily.
Powell Creek set a daily record precipitation of 31.0 mm (1.2 in) on 15 April 1984.
Across 159 earlier years (1801 to 2026) the same calendar date averaged 492 records.

Record Map

612 stations

612 station records on 15 April 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 April 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Powell Creek	Australia	Record daily precipitation	31.0 mm (1.2 in)	48 of 100 (Notable)
Inchanga (Sar)	South Africa	Record daily precipitation	37.0 mm (1.5 in)	43 of 100 (Notable)
Sedro-Woolley	United States	Record high minimum temperature	11.7 C (53.1 F)	41 of 100 (Notable)
Porthill	United States	Record high maximum temperature	27.2 C (81.0 F)	40 of 100 (Notable)
Cedar Lake	United States	Record high minimum temperature	11.1 C (52.0 F)	40 of 100 (Notable)
Everett	United States	Record high maximum temperature	29.4 C (84.9 F)	40 of 100 (Notable)
Nonning	Australia	Record daily precipitation	25.0 mm (1.0 in)	39 of 100 (Notable)
Spokane Intl AP	United States	Record high minimum temperature	10.6 C (51.1 F)	39 of 100 (Notable)
Belington	United States	Record daily precipitation	33.0 mm (1.3 in)	38 of 100 (Notable)
Felipe Carrillo Puerto (Obs)	Mexico	Record daily precipitation	73.0 mm (2.9 in)	37 of 100 (Notable)
Felipe Carrillo Puerto (Dge)	Mexico	Record daily precipitation	72.9 mm (2.9 in)	37 of 100 (Notable)
Eston	South Africa	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Startup 1 E	United States	Record high minimum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
Jacobina	Brazil	Record daily precipitation	52.5 mm (2.1 in)	36 of 100 (Notable)
Ribeirao Do Sul	Brazil	Record daily precipitation	70.6 mm (2.8 in)	36 of 100 (Notable)
Mt Wx	United States	Record daily precipitation	43.7 mm (1.7 in)	36 of 100 (Notable)
Clearwater	United States	Record high minimum temperature	7.8 C (46.0 F)	36 of 100 (Notable)
Rubcovsk	Russia	Record low minimum temperature	-21.6 C (-6.9 F)	35 of 100 (Notable)
Berryville	United States	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Blaine	United States	Record high minimum temperature	8.9 C (48.0 F)	35 of 100 (Notable)
Powhatan	United States	Record daily precipitation	29.2 mm (1.1 in)	34 of 100 (Routine)
Everett	United States	Record high minimum temperature	11.7 C (53.1 F)	34 of 100 (Routine)
Nevada City	United States	Record high maximum temperature	28.3 C (82.9 F)	33 of 100 (Routine)
Henderson 2 NNW	United States	Record daily precipitation	39.6 mm (1.6 in)	33 of 100 (Routine)
Diablo Dam	United States	Record high minimum temperature	8.3 C (46.9 F)	32 of 100 (Routine)
Spruce Knob	United States	Record daily precipitation	35.8 mm (1.4 in)	32 of 100 (Routine)
Motozintla (Smn)	Mexico	Record low minimum temperature	10.0 C (50.0 F)	31 of 100 (Routine)
Coeur D'Alene	United States	Record high minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Northport	United States	Record high maximum temperature	32.2 C (90.0 F)	31 of 100 (Routine)
Rosalia	United States	Record high minimum temperature	10.0 C (50.0 F)	31 of 100 (Routine)
Martinsburg E W Virginia Rgnl	United States	Record daily precipitation	32.8 mm (1.3 in)	31 of 100 (Routine)
Whyalla (Tregalana)	Australia	Record daily precipitation	26.0 mm (1.0 in)	30 of 100 (Routine)
Chico UNIV Farm	United States	Record high minimum temperature	18.9 C (66.0 F)	30 of 100 (Routine)
Walla Walla WSO City	United States	Record high maximum temperature	30.0 C (86.0 F)	30 of 100 (Routine)
Dudinka	Russia	Record low minimum temperature	-33.6 C (-28.5 F)	29 of 100 (Routine)
Babb 6 NE	United States	Record high maximum temperature	26.1 C (79.0 F)	29 of 100 (Routine)
Pahrump 4 NW	United States	Record high maximum temperature	31.7 C (89.1 F)	29 of 100 (Routine)
Vancouver 4 NNE	United States	Record high minimum temperature	12.2 C (54.0 F)	29 of 100 (Routine)
Verhojansk	Russia	Record high minimum temperature	-4.3 C (24.3 F)	28 of 100 (Routine)
Barabinsk	Russia	Record low minimum temperature	-18.0 C (-0.4 F)	28 of 100 (Routine)
Yampa	United States	Record snow depth	35.6 cm (14.0 in)	28 of 100 (Routine)
Coeur D'Alene	United States	Record high maximum temperature	27.8 C (82.0 F)	28 of 100 (Routine)
Tatarsk	Russia	Record low minimum temperature	-16.0 C (3.2 F)	27 of 100 (Routine)
Mnt Frere (Tnk)	South Africa	Record daily precipitation	25.5 mm (1.0 in)	27 of 100 (Routine)
Diablo Dam	United States	Record high maximum temperature	25.6 C (78.1 F)	27 of 100 (Routine)
Waialua 847	United States	Record low maximum temperature	23.3 C (73.9 F)	27 of 100 (Routine)
Cut Bank AP	United States	Record high maximum temperature	26.7 C (80.1 F)	27 of 100 (Routine)
Rinopolis	Brazil	Record daily precipitation	62.3 mm (2.5 in)	26 of 100 (Routine)
Bonners Ferry	United States	Record high maximum temperature	27.8 C (82.0 F)	26 of 100 (Routine)
Fortine 1 N	United States	Record high maximum temperature	27.2 C (81.0 F)	26 of 100 (Routine)
Hamilton	United States	Record high maximum temperature	28.3 C (82.9 F)	26 of 100 (Routine)
Carthage Wtp	United States	Record daily precipitation	44.2 mm (1.7 in)	26 of 100 (Routine)
Conconully	United States	Record high minimum temperature	7.2 C (45.0 F)	26 of 100 (Routine)
Port Angeles	United States	Record high minimum temperature	9.4 C (48.9 F)	26 of 100 (Routine)
Morgantown L&D	United States	Record daily precipitation	40.6 mm (1.6 in)	26 of 100 (Routine)
Echeta 2 NW	United States	Record low minimum temperature	-6.7 C (19.9 F)	26 of 100 (Routine)
Buenavista de Cuellar	Mexico	Record low maximum temperature	28.3 C (82.9 F)	25 of 100 (Routine)
Ajo	United States	Record high minimum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Mesa	United States	Record high minimum temperature	21.1 C (70.0 F)	25 of 100 (Routine)
Bushnell 1 E	United States	Record daily precipitation	31.8 mm (1.3 in)	25 of 100 (Routine)

Counts by Type and Timescale

612 records

Records set or tied on 15 April 1984 by type: Highest daily maximum 151, Lowest daily maximum 49, Highest daily minimum 134, Lowest daily minimum 48, Heaviest daily rainfall 221, Heaviest daily snowfall 2, Deepest snow cover 7.

Records on 15 April 1984 by type
Record type	Records
Highest daily maximum	151
Lowest daily maximum	49
Highest daily minimum	134
Lowest daily minimum	48
Heaviest daily rainfall	221
Heaviest daily snowfall	2
Deepest snow cover	7

Records on 15 April 1984 by timescale: all-time 0, monthly 18, daily 594.

How Much Records Were Beaten By

492 broken records

Margins by which the 492 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.0. Ties are not counted.

Top 20 by Significance

15 April 1984

Top 20 records on 15 April 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 April 1984	Powell Creek, AU	daily rain	31.0 mm (1.2 in)	28.5 mm (1.1 in)	77 years	48 of 100 (Notable)
15 April 1984	Inchanga (Sar), ZA	daily rain	37.0 mm (1.5 in)	27.6 mm (1.1 in)	41 years	43 of 100 (Notable)
15 April 1984	Sedro-Woolley, US	daily high min	11.7 C (53.1 F)	2.8 C (5.0 F)	82 years	41 of 100 (Notable)
15 April 1984	Porthill, US	daily high max	27.2 C (81.0 F)	2.8 C (5.0 F)	86 years	40 of 100 (Notable)
15 April 1984	Cedar Lake, US	daily high min	11.1 C (52.0 F)	4.4 C (7.9 F)	59 years	40 of 100 (Notable)
15 April 1984	Everett, US	monthly high max	29.4 C (84.9 F)	2.7 C (4.9 F)	44 years	40 of 100 (Notable)
15 April 1984	Nonning, AU	daily rain	25.0 mm (1.0 in)	20.4 mm (0.8 in)	11 years	39 of 100 (Notable)
15 April 1984	Spokane Intl AP, US	daily high min	10.6 C (51.1 F)	1.7 C (3.1 F)	85 years	39 of 100 (Notable)
15 April 1984	Belington, US	daily rain	33.0 mm (1.3 in)	15.7 mm (0.6 in)	45 years	38 of 100 (Notable)
15 April 1984	Felipe Carrillo Puerto (Obs), MX	daily rain	73.0 mm (2.9 in)	36.5 mm (1.4 in)	27 years	37 of 100 (Notable)
15 April 1984	Felipe Carrillo Puerto (Dge), MX	daily rain	72.9 mm (2.9 in)	36.6 mm (1.4 in)	27 years	37 of 100 (Notable)
15 April 1984	Eston, ZA	daily rain	32.0 mm (1.3 in)	16.0 mm (0.6 in)	49 years	37 of 100 (Notable)
15 April 1984	Startup 1 E, US	monthly high min	16.1 C (61.0 F)	2.8 C (5.0 F)	45 years	37 of 100 (Notable)
15 April 1984	Jacobina, BR	daily rain	52.5 mm (2.1 in)	34.3 mm (1.4 in)	24 years	36 of 100 (Notable)
15 April 1984	Ribeirao Do Sul, BR	daily rain	70.6 mm (2.8 in)	43.7 mm (1.7 in)	9 years	36 of 100 (Notable)
15 April 1984	Mt Wx, US	daily rain	43.7 mm (1.7 in)	12.2 mm (0.5 in)	59 years	36 of 100 (Notable)
15 April 1984	Clearwater, US	daily high min	7.8 C (46.0 F)	0.6 C (1.1 F)	84 years	36 of 100 (Notable)
15 April 1984	Rubcovsk, RU	daily low min	-21.6 C (-6.9 F)	9.2 C (16.6 F)	47 years	35 of 100 (Notable)
15 April 1984	Berryville, US	daily rain	31.0 mm (1.2 in)	18.6 mm (0.7 in)	39 years	35 of 100 (Notable)
15 April 1984	Blaine, US	daily high min	8.9 C (48.0 F)	0.6 C (1.1 F)	80 years	35 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

1801 to 1984

Records set or tied on this calendar date in each year from 1801 to 1984. 1984 had 612 records.

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

Records on 04-15 in each year
Year	Records
1801	1
1817	1
1820	1
1844	1
1845	1
1847	1
1849	1
1853	2
1855	2
1858	1
1862	3
1865	3
1866	1
1868	1
1869	2
1873	1
1874	1
1876	1
1880	1
1882	1
1885	3
1886	1
1887	3
1889	2
1890	3
1891	2
1892	8
1893	2
1894	1
1896	2
1897	1
1898	2
1899	4
1900	9
1901	2
1902	4
1903	8
1904	39
1905	11
1906	20
1907	18
1908	15
1909	18
1910	16
1911	20
1912	24
1913	39
1914	17
1915	13
1916	15
1917	35
1918	40
1919	22
1920	50
1921	59
1922	94
1923	178
1924	172
1925	168
1926	453
1927	321
1928	631
1929	91
1930	289
1931	388
1932	150
1933	300
1934	339
1935	515
1936	439
1937	277
1938	596
1939	789
1940	581
1941	628
1942	525
1943	1,037
1944	313
1945	783
1946	245
1947	532
1948	306
1949	419
1950	568
1951	504
1952	357
1953	475
1954	896
1955	484
1956	750
1957	378
1958	458
1959	314
1960	319
1961	877
1962	733
1963	714
1964	382
1965	504
1966	464
1967	599
1968	476
1969	555
1970	841
1971	640
1972	896
1973	667
1974	385
1975	780
1976	1,566
1977	649
1978	426
1979	370
1980	1,066
1981	724
1982	955
1983	1,343
1984	612
1985	788
1986	1,140
1987	579
1988	839
1989	836
1990	837
1991	769
1992	783
1993	1,156
1994	835
1995	805
1996	1,173
1997	1,031
1998	1,752
1999	1,249
2000	1,163
2001	1,043
2002	1,866
2003	1,760
2004	761
2005	583
2006	1,637
2007	1,776
2008	1,157
2009	853
2010	804
2011	1,162
2012	1,007
2013	1,146
2014	1,721
2015	739
2016	602
2017	474
2018	1,913
2019	610
2020	1,068
2021	494
2022	1,145
2023	912
2024	1,096
2025	860
2026	1,118

Download the Data

Data for records on 1984-04-15: 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	464
20 to 40	23
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	1