Weather Records on 23 May 1978

703 weather records were set or tied worldwide on 23 May 1978. Highest significance: Mainz-Lerchenberg (Zdf), DE.

Key Facts for 23 May 1978

On 23 May 1978, 703 weather records were set or tied at long-record stations worldwide.
163 were record highs and 158 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 37 monthly and 662 daily.
Mainz-Lerchenberg (Zdf) set an all-time record daily precipitation of 81.5 mm (3.2 in) on 23 May 1978.
Across 158 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

703 stations

703 station records on 23 May 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 May 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mainz-Lerchenberg (Zdf)	Germany	Record daily precipitation	81.5 mm (3.2 in)	79 of 100 (Major)
Arnsberg	Germany	Record daily precipitation	65.9 mm (2.6 in)	76 of 100 (Major)
Karlsruhe	Germany	Record daily precipitation	83.8 mm (3.3 in)	70 of 100 (Major)
Tuttlingen	Germany	Record daily precipitation	59.5 mm (2.3 in)	69 of 100 (Major)
Manoa 712.1	United States	Record daily precipitation	89.7 mm (3.5 in)	68 of 100 (Major)
Gernsheim-Allmendfeld	Germany	Record daily precipitation	69.9 mm (2.8 in)	64 of 100 (Major)
Rjukan	Norway	Record daily precipitation	34.8 mm (1.4 in)	63 of 100 (Major)
Stuttgart-Stadt	Germany	Record daily precipitation	49.9 mm (2.0 in)	62 of 100 (Major)
Strasbourg-Entzheim	France	Record daily precipitation	62.9 mm (2.5 in)	60 of 100 (Major)
Oksoey Fyr	Norway	Record daily precipitation	32.0 mm (1.3 in)	60 of 100 (Major)
Rheinstetten	Germany	Record daily precipitation	76.0 mm (3.0 in)	56 of 100 (Notable)
Wolfstein/Pfalz	Germany	Record daily precipitation	63.2 mm (2.5 in)	56 of 100 (Notable)
Pforzheim-Eutingen	Germany	Record daily precipitation	41.6 mm (1.6 in)	55 of 100 (Notable)
Astana	Kazakhstan	Record daily precipitation	29.5 mm (1.2 in)	55 of 100 (Notable)
Mykland	Norway	Record daily precipitation	28.1 mm (1.1 in)	55 of 100 (Notable)
Weissenburg	Germany	Record daily precipitation	35.5 mm (1.4 in)	54 of 100 (Notable)
Waianae 798	United States	Record daily precipitation	31.8 mm (1.3 in)	54 of 100 (Notable)
Bad Ems	Germany	Record daily precipitation	30.4 mm (1.2 in)	53 of 100 (Notable)
Postmyr I Drangedal	Norway	Record daily precipitation	31.2 mm (1.2 in)	53 of 100 (Notable)
Koolau Dam 833	United States	Record daily precipitation	86.9 mm (3.4 in)	53 of 100 (Notable)
UNIV of Hawaii 713	United States	Record daily precipitation	76.2 mm (3.0 in)	53 of 100 (Notable)
Waialua 847	United States	Record daily precipitation	43.7 mm (1.7 in)	53 of 100 (Notable)
Lidsdale State Forest	Australia	Record daily precipitation	56.4 mm (2.2 in)	52 of 100 (Notable)
Eppingen-Elsenz	Germany	Record daily precipitation	47.2 mm (1.9 in)	52 of 100 (Notable)
Warthausen-Birkenhard	Germany	Record daily precipitation	43.9 mm (1.7 in)	52 of 100 (Notable)
Worms	Germany	Record daily precipitation	79.3 mm (3.1 in)	52 of 100 (Notable)
Kalihi Rsch Site 777	United States	Record daily precipitation	90.4 mm (3.6 in)	52 of 100 (Notable)
Lenningen-Schopfloch	Germany	Record daily precipitation	59.5 mm (2.3 in)	51 of 100 (Notable)
Limburg/Lahn-Offheim	Germany	Record daily precipitation	50.6 mm (2.0 in)	51 of 100 (Notable)
Bad Kreuznach	Germany	Record daily precipitation	28.8 mm (1.1 in)	51 of 100 (Notable)
Konstanz	Germany	Record daily precipitation	47.3 mm (1.9 in)	50 of 100 (Notable)
Blankenrath	Germany	Record daily precipitation	28.4 mm (1.1 in)	50 of 100 (Notable)
Buffalo 2N	United States	Record daily precipitation	107.7 mm (4.2 in)	50 of 100 (Notable)
Nuuanu Rsch 4 783	United States	Record daily precipitation	171.2 mm (6.7 in)	50 of 100 (Notable)
Hannover	Germany	Record daily precipitation	28.1 mm (1.1 in)	49 of 100 (Notable)
Freiberg	Germany	Record daily precipitation	44.3 mm (1.7 in)	49 of 100 (Notable)
Eppingen	Germany	Record daily precipitation	38.0 mm (1.5 in)	48 of 100 (Notable)
Hechingen	Germany	Record daily precipitation	43.6 mm (1.7 in)	48 of 100 (Notable)
Beckum-Unterberg	Germany	Record daily precipitation	41.5 mm (1.6 in)	48 of 100 (Notable)
Herefoss	Norway	Record daily precipitation	43.0 mm (1.7 in)	48 of 100 (Notable)
Kjevik	Norway	Record daily precipitation	45.4 mm (1.8 in)	48 of 100 (Notable)
Palolo Vly 718	United States	Record daily precipitation	245.9 mm (9.7 in)	48 of 100 (Notable)
Tapiratiba	Brazil	Record daily precipitation	47.2 mm (1.9 in)	47 of 100 (Notable)
Modautal-Neunkirchen	Germany	Record daily precipitation	47.6 mm (1.9 in)	47 of 100 (Notable)
Neustadt/Weinstrasse	Germany	Record daily precipitation	73.4 mm (2.9 in)	47 of 100 (Notable)
Bad Schwalbach	Germany	Record daily precipitation	37.5 mm (1.5 in)	47 of 100 (Notable)
Cedarville	United States	Record daily snowfall	5.3 cm (2.1 in)	47 of 100 (Notable)
Friedrichshafen	Germany	Record daily precipitation	54.4 mm (2.1 in)	46 of 100 (Notable)
Kaisheim-Neuhof	Germany	Record daily precipitation	37.2 mm (1.5 in)	46 of 100 (Notable)
Reimlingen	Germany	Record daily precipitation	31.0 mm (1.2 in)	46 of 100 (Notable)
Uberlingen/Bodensee	Germany	Record daily precipitation	46.1 mm (1.8 in)	46 of 100 (Notable)
Ashgabat	Turkmenistan	Record daily precipitation	31.5 mm (1.2 in)	46 of 100 (Notable)
Centralia	United States	Record daily precipitation	67.1 mm (2.6 in)	46 of 100 (Notable)
Saint Ignatius	United States	Record daily snowfall	7.1 cm (2.8 in)	46 of 100 (Notable)
Halaula 1110	United States	Record daily precipitation	47.5 mm (1.9 in)	46 of 100 (Notable)
Kealia 1112	United States	Record daily precipitation	39.4 mm (1.6 in)	46 of 100 (Notable)
Honolulu Intl AP	United States	Record daily precipitation	48.3 mm (1.9 in)	46 of 100 (Notable)
Nufringen	Germany	Record daily precipitation	48.4 mm (1.9 in)	45 of 100 (Notable)
Sigmarszell-Zeisertsweiler	Germany	Record daily precipitation	69.0 mm (2.7 in)	45 of 100 (Notable)
Neustadt/Aisch	Germany	Record daily precipitation	30.8 mm (1.2 in)	44 of 100 (Notable)

Counts by Type and Timescale

703 records

Records set or tied on 23 May 1978 by type: Highest daily maximum 23, Lowest daily maximum 78, Highest daily minimum 140, Lowest daily minimum 80, Heaviest daily rainfall 372, Heaviest daily snowfall 10.

Records on 23 May 1978 by type
Record type	Records
Highest daily maximum	23
Lowest daily maximum	78
Highest daily minimum	140
Lowest daily minimum	80
Heaviest daily rainfall	372
Heaviest daily snowfall	10
Deepest snow cover	0

Records on 23 May 1978 by timescale: all-time 4, monthly 37, daily 662.

How Much Records Were Beaten By

614 broken records

Margins by which the 614 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 147.8. Ties are not counted.

Top 20 by Significance

23 May 1978

Top 20 records on 23 May 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 May 1978	Mainz-Lerchenberg (Zdf), DE	all-time rain	81.5 mm (3.2 in)	32.2 mm (1.3 in)	36 years	79 of 100 (Major)
23 May 1978	Arnsberg, DE	daily rain	65.9 mm (2.6 in)	33.1 mm (1.3 in)	91 years	76 of 100 (Major)
23 May 1978	Karlsruhe, DE	daily rain	83.8 mm (3.3 in)	56.6 mm (2.2 in)	69 years	70 of 100 (Major)
23 May 1978	Tuttlingen, DE	daily rain	59.5 mm (2.3 in)	21.9 mm (0.9 in)	84 years	69 of 100 (Major)
23 May 1978	Manoa 712.1, US	daily rain	89.7 mm (3.5 in)	60.0 mm (2.4 in)	72 years	68 of 100 (Major)
23 May 1978	Gernsheim-Allmendfeld, DE	monthly rain	69.9 mm (2.8 in)	29.3 mm (1.2 in)	36 years	64 of 100 (Major)
23 May 1978	Rjukan, NO	daily rain	34.8 mm (1.4 in)	23.8 mm (0.9 in)	69 years	63 of 100 (Major)
23 May 1978	Stuttgart-Stadt, DE	daily rain	49.9 mm (2.0 in)	35.9 mm (1.4 in)	52 years	62 of 100 (Major)
23 May 1978	Strasbourg-Entzheim, FR	daily rain	62.9 mm (2.5 in)	52.9 mm (2.1 in)	52 years	60 of 100 (Major)
23 May 1978	Oksoey Fyr, NO	daily rain	32.0 mm (1.3 in)	14.4 mm (0.6 in)	95 years	60 of 100 (Major)
23 May 1978	Rheinstetten, DE	daily rain	76.0 mm (3.0 in)	51.6 mm (2.0 in)	43 years	56 of 100 (Notable)
23 May 1978	Wolfstein/Pfalz, DE	monthly rain	63.2 mm (2.5 in)	21.6 mm (0.9 in)	8 years	56 of 100 (Notable)
23 May 1978	Pforzheim-Eutingen, DE	daily rain	41.6 mm (1.6 in)	23.1 mm (0.9 in)	37 years	55 of 100 (Notable)
23 May 1978	Astana, KZ	daily rain	29.5 mm (1.2 in)	19.6 mm (0.8 in)	21 years	55 of 100 (Notable)
23 May 1978	Mykland, NO	daily rain	28.1 mm (1.1 in)	18.1 mm (0.7 in)	76 years	55 of 100 (Notable)
23 May 1978	Weissenburg, DE	daily rain	35.5 mm (1.4 in)	13.5 mm (0.5 in)	73 years	54 of 100 (Notable)
23 May 1978	Waianae 798, US	daily rain	31.8 mm (1.3 in)	27.0 mm (1.1 in)	60 years	54 of 100 (Notable)
23 May 1978	Bad Ems, DE	daily rain	30.4 mm (1.2 in)	22.4 mm (0.9 in)	31 years	53 of 100 (Notable)
23 May 1978	Postmyr I Drangedal, NO	daily rain	31.2 mm (1.2 in)	17.7 mm (0.7 in)	79 years	53 of 100 (Notable)
23 May 1978	Koolau Dam 833, US	daily rain	86.9 mm (3.4 in)	63.3 mm (2.5 in)	24 years	53 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 1978

Records set or tied on this calendar date in each year from 1793 to 1978. 1978 had 703 records.

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

Records on 05-23 in each year
Year	Records
1793	1
1794	1
1798	1
1817	1
1818	1
1837	3
1845	1
1847	2
1857	1
1863	1
1865	2
1866	5
1867	7
1870	2
1871	1
1875	1
1877	1
1878	1
1880	1
1884	2
1885	2
1886	4
1887	1
1889	2
1891	11
1893	3
1894	1
1895	3
1896	4
1897	3
1898	8
1899	3
1900	12
1901	3
1902	12
1903	6
1904	14
1905	10
1906	23
1907	11
1908	13
1909	23
1910	26
1911	39
1912	31
1913	29
1914	33
1915	13
1916	44
1917	58
1918	36
1919	120
1920	37
1921	92
1922	82
1923	99
1924	230
1925	325
1926	204
1927	243
1928	177
1929	221
1930	199
1931	719
1932	358
1933	443
1934	203
1935	369
1936	568
1937	156
1938	390
1939	415
1940	324
1941	676
1942	235
1943	342
1944	784
1945	241
1946	311
1947	285
1948	273
1949	612
1950	490
1951	400
1952	597
1953	777
1954	496
1955	650
1956	498
1957	653
1958	744
1959	486
1960	395
1961	412
1962	677
1963	1,153
1964	964
1965	477
1966	391
1967	1,055
1968	578
1969	437
1970	314
1971	659
1972	449
1973	371
1974	678
1975	855
1976	556
1977	596
1978	703
1979	730
1980	1,202
1981	862
1982	717
1983	1,123
1984	1,027
1985	608
1986	626
1987	745
1988	662
1989	1,106
1990	1,660
1991	1,244
1992	1,423
1993	845
1994	690
1995	1,106
1996	1,114
1997	983
1998	947
1999	705
2000	1,372
2001	1,441
2002	1,537
2003	954
2004	1,275
2005	908
2006	1,122
2007	1,170
2008	1,472
2009	805
2010	1,275
2011	1,001
2012	1,006
2013	929
2014	858
2015	667
2016	679
2017	602
2018	552
2019	1,044
2020	631
2021	837
2022	807
2023	316
2024	760
2025	865
2026	804

Download the Data

Data for records on 1978-05-23: 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	531
20 to 40	61
40 to 60	14
60 to 80	7
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1