Weather Records on 22 August 1978

529 weather records were set or tied worldwide on 22 August 1978. Highest significance: Heppner, US.

Key Facts for 22 August 1978

On 22 August 1978, 529 weather records were set or tied at long-record stations worldwide.
166 were record highs and 178 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 18 monthly and 510 daily.
Heppner set a daily record precipitation of 32.3 mm (1.3 in) on 22 August 1978.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 436 records.

Record Map

529 stations

529 station records on 22 August 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 22 August 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Heppner	United States	Record daily precipitation	32.3 mm (1.3 in)	69 of 100 (Major)
Lethbridge Cda	Canada	Record daily precipitation	88.7 mm (3.5 in)	57 of 100 (Notable)
Yreka	United States	Record daily precipitation	28.7 mm (1.1 in)	54 of 100 (Notable)
Kailua 446	United States	Record daily precipitation	105.4 mm (4.1 in)	54 of 100 (Notable)
Webster City	United States	Record daily precipitation	72.4 mm (2.9 in)	53 of 100 (Notable)
Ajan	Russia	Record daily precipitation	177.8 mm (7.0 in)	51 of 100 (Notable)
Cuddalore	India	Record daily precipitation	110.0 mm (4.3 in)	50 of 100 (Notable)
Arteaga (Smn)	Mexico	Record daily precipitation	73.9 mm (2.9 in)	50 of 100 (Notable)
Nikolaevsk-Na-Amure	Russia	Record daily precipitation	34.0 mm (1.3 in)	49 of 100 (Notable)
Dawson	United States	Record daily precipitation	54.4 mm (2.1 in)	48 of 100 (Notable)
Hamakuapoko 485	United States	Record daily precipitation	32.8 mm (1.3 in)	48 of 100 (Notable)
Rocco	South Africa	Record daily precipitation	26.0 mm (1.0 in)	47 of 100 (Notable)
Cut Bank AP	United States	Record daily precipitation	48.0 mm (1.9 in)	47 of 100 (Notable)
Taber	Canada	Record daily precipitation	82.0 mm (3.2 in)	46 of 100 (Notable)
Barshatas	Kazakhstan	Record daily precipitation	26.5 mm (1.0 in)	46 of 100 (Notable)
Aberdeen	United States	Record daily precipitation	46.7 mm (1.8 in)	43 of 100 (Notable)
Lethbridge A	Canada	Record daily precipitation	68.6 mm (2.7 in)	42 of 100 (Notable)
Richfield Radio Ksvc	United States	Record high minimum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Cardston	Canada	Record daily precipitation	43.0 mm (1.7 in)	39 of 100 (Notable)
Johnson Rch	United States	Record daily precipitation	35.6 mm (1.4 in)	39 of 100 (Notable)
Oberlin	United States	Record high minimum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Thomasville 7 NE	United States	Record daily precipitation	48.0 mm (1.9 in)	37 of 100 (Notable)
Salekhard	Russia	Record low minimum temperature	-3.4 C (25.9 F)	35 of 100 (Notable)
Rangely 1E	United States	Record high minimum temperature	17.8 C (64.0 F)	35 of 100 (Notable)
Rocky Ford 2 SE	United States	Record high minimum temperature	20.0 C (68.0 F)	35 of 100 (Notable)
Arco	United States	Record low minimum temperature	-3.3 C (26.1 F)	34 of 100 (Routine)
Rainer Ohanapecosh	United States	Record daily precipitation	25.1 mm (1.0 in)	34 of 100 (Routine)
Ulysses 3NE	United States	Record high maximum temperature	41.1 C (106.0 F)	33 of 100 (Routine)
Arlington	United States	Record low maximum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Ft Valley	United States	Record daily precipitation	25.9 mm (1.0 in)	32 of 100 (Routine)
Kazalinsk	Kazakhstan	Record low minimum temperature	8.0 C (46.4 F)	31 of 100 (Routine)
Statesville 2 NNE	United States	Record low minimum temperature	10.6 C (51.1 F)	31 of 100 (Routine)
Corinne	United States	Record high minimum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
New Orleans AP	United States	Record daily precipitation	121.2 mm (4.8 in)	31 of 100 (Routine)
Seward AP	United States	Record high minimum temperature	13.3 C (55.9 F)	31 of 100 (Routine)
Carrollton	United States	Record high minimum temperature	22.2 C (72.0 F)	30 of 100 (Routine)
Henderson 2 NNW	United States	Record low minimum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Yreka	United States	Record low maximum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
Tamiami Trail 40 Mi Bend	United States	Record low minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Ft Dodge 5NNW	United States	Record daily precipitation	59.4 mm (2.3 in)	29 of 100 (Routine)
Moorestown 4 E	United States	Record high maximum temperature	35.6 C (96.1 F)	29 of 100 (Routine)
Burleson 2 SSW	United States	Record daily precipitation	48.5 mm (1.9 in)	29 of 100 (Routine)
Odessa	United States	Record low maximum temperature	22.8 C (73.0 F)	29 of 100 (Routine)
Pahoa 65	United States	Record daily precipitation	63.5 mm (2.5 in)	29 of 100 (Routine)
Tygerfontein	South Africa	Record daily precipitation	60.2 mm (2.4 in)	28 of 100 (Routine)
Hull	United Kingdom	Record high minimum temperature	16.2 C (61.2 F)	28 of 100 (Routine)
Rome	United States	Record daily precipitation	42.9 mm (1.7 in)	28 of 100 (Routine)
Kurgan	Russia	Record low minimum temperature	3.0 C (37.4 F)	27 of 100 (Routine)
Camp Pardee	United States	Record low minimum temperature	7.2 C (45.0 F)	27 of 100 (Routine)
Ft Myers Page Fld AP	United States	Record high maximum temperature	35.6 C (96.1 F)	27 of 100 (Routine)
Miami Beach	United States	Record low maximum temperature	28.3 C (82.9 F)	27 of 100 (Routine)
Shasta Dam	United States	Record low minimum temperature	6.7 C (44.1 F)	26 of 100 (Routine)
Aspen	United States	Record high minimum temperature	13.9 C (57.0 F)	26 of 100 (Routine)
Loa	United States	Record high minimum temperature	11.1 C (52.0 F)	26 of 100 (Routine)
Moroni	United States	Record high minimum temperature	15.6 C (60.1 F)	26 of 100 (Routine)
Yakutat AP	United States	Record high maximum temperature	22.2 C (72.0 F)	26 of 100 (Routine)
Alfoten II	Norway	Record daily precipitation	29.7 mm (1.2 in)	25 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record low maximum temperature	27.8 C (82.0 F)	25 of 100 (Routine)
Ft Jones Rs	United States	Record daily precipitation	26.7 mm (1.1 in)	25 of 100 (Routine)
Potlatch 3 NNE	United States	Record daily precipitation	25.4 mm (1.0 in)	25 of 100 (Routine)

Counts by Type and Timescale

529 records

Records set or tied on 22 August 1978 by type: Highest daily maximum 59, Lowest daily maximum 90, Highest daily minimum 107, Lowest daily minimum 88, Heaviest daily rainfall 184, Heaviest daily snowfall 1.

Records on 22 August 1978 by type
Record type	Records
Highest daily maximum	59
Lowest daily maximum	90
Highest daily minimum	107
Lowest daily minimum	88
Heaviest daily rainfall	184
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 22 August 1978 by timescale: all-time 1, monthly 18, daily 510.

How Much Records Were Beaten By

417 broken records

Margins by which the 417 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.8. Ties are not counted.

Top 20 by Significance

22 August 1978

Top 20 records on 22 August 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 August 1978	Heppner, US	daily rain	32.3 mm (1.3 in)	18.3 mm (0.7 in)	78 years	69 of 100 (Major)
22 August 1978	Lethbridge Cda, CA	monthly rain	88.7 mm (3.5 in)	40.4 mm (1.6 in)	2 years	57 of 100 (Notable)
22 August 1978	Yreka, US	daily rain	28.7 mm (1.1 in)	22.1 mm (0.9 in)	20 years	54 of 100 (Notable)
22 August 1978	Kailua 446, US	daily rain	105.4 mm (4.1 in)	51.8 mm (2.0 in)	35 years	54 of 100 (Notable)
22 August 1978	Webster City, US	daily rain	72.4 mm (2.9 in)	35.6 mm (1.4 in)	56 years	53 of 100 (Notable)
22 August 1978	Ajan, RU	all-time rain	177.8 mm (7.0 in)	40.0 mm (1.6 in)	18 years	51 of 100 (Notable)
22 August 1978	Cuddalore, IN	daily rain	110.0 mm (4.3 in)	41.4 mm (1.6 in)	63 years	50 of 100 (Notable)
22 August 1978	Arteaga (Smn), MX	daily rain	73.9 mm (2.9 in)	51.8 mm (2.0 in)	33 years	50 of 100 (Notable)
22 August 1978	Nikolaevsk-Na-Amure, RU	daily rain	34.0 mm (1.3 in)	13.3 mm (0.5 in)	85 years	49 of 100 (Notable)
22 August 1978	Dawson, US	daily rain	54.4 mm (2.1 in)	22.6 mm (0.9 in)	72 years	48 of 100 (Notable)
22 August 1978	Hamakuapoko 485, US	daily rain	32.8 mm (1.3 in)	23.9 mm (0.9 in)	33 years	48 of 100 (Notable)
22 August 1978	Rocco, ZA	daily rain	26.0 mm (1.0 in)	26.0 mm (1.0 in)	47 years	47 of 100 (Notable)
22 August 1978	Cut Bank AP, US	daily rain	48.0 mm (1.9 in)	30.0 mm (1.2 in)	0 years	47 of 100 (Notable)
22 August 1978	Taber, CA	monthly rain	82.0 mm (3.2 in)	21.0 mm (0.8 in)	2 years	46 of 100 (Notable)
22 August 1978	Barshatas, KZ	daily rain	26.5 mm (1.0 in)	18.7 mm (0.7 in)	36 years	46 of 100 (Notable)
22 August 1978	Aberdeen, US	daily rain	46.7 mm (1.8 in)	20.0 mm (0.8 in)	60 years	43 of 100 (Notable)
22 August 1978	Lethbridge A, CA	monthly rain	68.6 mm (2.7 in)	14.0 mm (0.6 in)	31 years	42 of 100 (Notable)
22 August 1978	Richfield Radio Ksvc, US	daily high min	18.9 C (66.0 F)	3.9 C (7.0 F)	73 years	41 of 100 (Notable)
22 August 1978	Cardston, CA	daily rain	43.0 mm (1.7 in)	29.0 mm (1.1 in)	0 years	39 of 100 (Notable)
22 August 1978	Johnson Rch, US	daily rain	35.6 mm (1.4 in)	19.9 mm (0.8 in)	27 years	39 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

1802 to 1978

Records set or tied on this calendar date in each year from 1802 to 1978. 1978 had 529 records.

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

Records on 08-22 in each year
Year	Records
1802	2
1803	1
1805	1
1812	1
1816	1
1835	1
1839	2
1843	1
1846	2
1849	1
1850	1
1853	1
1857	1
1863	1
1864	1
1867	1
1868	1
1869	1
1870	4
1872	1
1875	1
1876	3
1877	3
1878	2
1882	1
1883	1
1884	1
1885	1
1886	1
1887	2
1888	2
1889	3
1891	2
1892	6
1893	3
1894	7
1895	6
1896	2
1897	4
1898	6
1899	5
1900	1
1901	5
1902	6
1903	3
1904	8
1905	7
1906	24
1907	7
1908	29
1909	5
1910	19
1911	20
1912	39
1913	30
1914	18
1915	31
1916	75
1917	47
1918	85
1919	18
1920	60
1921	64
1922	44
1923	279
1924	148
1925	219
1926	144
1927	154
1928	134
1929	240
1930	276
1931	388
1932	222
1933	367
1934	234
1935	337
1936	954
1937	421
1938	501
1939	517
1940	503
1941	249
1942	500
1943	517
1944	526
1945	475
1946	410
1947	1,034
1948	297
1949	570
1950	460
1951	452
1952	372
1953	348
1954	466
1955	553
1956	785
1957	371
1958	511
1959	547
1960	612
1961	562
1962	329
1963	419
1964	686
1965	423
1966	830
1967	404
1968	1,091
1969	727
1970	368
1971	1,021
1972	436
1973	611
1974	628
1975	597
1976	722
1977	655
1978	529
1979	547
1980	640
1981	795
1982	912
1983	1,366
1984	739
1985	793
1986	1,073
1987	801
1988	1,133
1989	753
1990	808
1991	808
1992	994
1993	845
1994	803
1995	1,002
1996	942
1997	1,381
1998	1,016
1999	756
2000	867
2001	940
2002	1,385
2003	1,550
2004	1,029
2005	887
2006	832
2007	1,801
2008	869
2009	1,347
2010	1,397
2011	1,255
2012	831
2013	450
2014	911
2015	529
2016	730
2017	537
2018	752
2019	558
2020	1,041
2021	683
2022	781
2023	1,525
2024	803
2025	1,359
2026	992

Download the Data

Data for records on 1978-08-22: 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).