Weather Records on 2 May 1978

976 weather records were set or tied worldwide on 2 May 1978. Highest significance: Manassa, US.

Key Facts for 2 May 1978

On 2 May 1978, 976 weather records were set or tied at long-record stations worldwide.
82 were record highs and 483 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 98 monthly and 876 daily.
Manassa set a daily record snowfall of 20.3 cm (8.0 in) on 2 May 1978.
Across 162 earlier years (1795 to 2026) the same calendar date averaged 458 records.

Record Map

976 stations

976 station records on 2 May 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 2 May 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Manassa	United States	Record daily snowfall	20.3 cm (8.0 in)	73 of 100 (Major)
Las Vegas 2 NW	United States	Record daily snowfall	38.1 cm (15.0 in)	67 of 100 (Major)
Ruy Barbosa	Brazil	Record daily precipitation	79.8 mm (3.1 in)	63 of 100 (Major)
Dilia	United States	Record daily snowfall	35.6 cm (14.0 in)	63 of 100 (Major)
Jal	United States	Record daily precipitation	38.1 mm (1.5 in)	63 of 100 (Major)
Del Norte 3ENE	United States	Record daily precipitation	26.2 mm (1.0 in)	62 of 100 (Major)
Abbott 1 SE	United States	Record daily snowfall	17.8 cm (7.0 in)	62 of 100 (Major)
Sandia Park	United States	Record daily snowfall	30.5 cm (12.0 in)	61 of 100 (Major)
Las Vegas 2 NW	United States	Record daily precipitation	50.8 mm (2.0 in)	60 of 100 (Major)
Las Vegas Muni AP	United States	Record daily snowfall	26.4 cm (10.4 in)	56 of 100 (Notable)
Gyzylarbat	Turkmenistan	Record daily precipitation	47.1 mm (1.9 in)	55 of 100 (Notable)
Los Alamos	United States	Record daily precipitation	31.5 mm (1.2 in)	55 of 100 (Notable)
Sandia Park	United States	Record daily precipitation	46.2 mm (1.8 in)	55 of 100 (Notable)
Yeso 2 S	United States	Record daily snowfall	15.2 cm (6.0 in)	53 of 100 (Notable)
Black Lake	United States	Record daily precipitation	49.5 mm (1.9 in)	52 of 100 (Notable)
Kelly Rch	United States	Record daily precipitation	33.5 mm (1.3 in)	52 of 100 (Notable)
Gernsheim-Allmendfeld	Germany	Record daily precipitation	31.8 mm (1.3 in)	51 of 100 (Notable)
Ntywenka (Bos)	South Africa	Record daily precipitation	55.0 mm (2.2 in)	51 of 100 (Notable)
Conchas Dam	United States	Record daily snowfall	14.0 cm (5.5 in)	51 of 100 (Notable)
Newkirk	United States	Record daily snowfall	15.2 cm (6.0 in)	50 of 100 (Notable)
Los Alamos	United States	Record daily snowfall	30.5 cm (12.0 in)	49 of 100 (Notable)
Childress Muni AP	United States	Record daily precipitation	56.9 mm (2.2 in)	49 of 100 (Notable)
Bensheim	Germany	Record daily precipitation	32.8 mm (1.3 in)	48 of 100 (Notable)
Golden	United States	Record daily precipitation	46.7 mm (1.8 in)	48 of 100 (Notable)
Capitan	United States	Record daily snowfall	10.2 cm (4.0 in)	47 of 100 (Notable)
Ochoa	United States	Record daily precipitation	44.5 mm (1.8 in)	47 of 100 (Notable)
Ruidoso	United States	Record daily precipitation	27.9 mm (1.1 in)	47 of 100 (Notable)
Troickoe	Russia	Record daily precipitation	30.4 mm (1.2 in)	46 of 100 (Notable)
Szeged	Hungary	Record daily precipitation	36.0 mm (1.4 in)	45 of 100 (Notable)
Amistad 5 SSW	United States	Record daily snowfall	7.6 cm (3.0 in)	45 of 100 (Notable)
Bosque del Apache	United States	Record daily precipitation	27.9 mm (1.1 in)	44 of 100 (Notable)
Santa Rosa	United States	Record snow depth	10.2 cm (4.0 in)	44 of 100 (Notable)
Notinsila (Bos)	South Africa	Record daily precipitation	95.2 mm (3.7 in)	43 of 100 (Notable)
Porter 2 E	United States	Record daily snowfall	11.4 cm (4.5 in)	43 of 100 (Notable)
Maxwell 3 NW	United States	Record daily snowfall	7.6 cm (3.0 in)	42 of 100 (Notable)
Red Rvr	United States	Record daily snowfall	33.0 cm (13.0 in)	42 of 100 (Notable)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	27.5 mm (1.1 in)	41 of 100 (Notable)
Georgetown 2 E	United States	Record daily precipitation	46.0 mm (1.8 in)	41 of 100 (Notable)
Walterboro 1 SW	United States	Record low maximum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Clayton Muni Air Pk	United States	Record low maximum temperature	1.1 C (34.0 F)	41 of 100 (Notable)
Gazandzhyk	Turkmenistan	Record daily precipitation	45.5 mm (1.8 in)	40 of 100 (Notable)
Chacon	United States	Record daily precipitation	38.4 mm (1.5 in)	40 of 100 (Notable)
Farnsworth Rch	United States	Record daily precipitation	43.2 mm (1.7 in)	40 of 100 (Notable)
Ghost Rch	United States	Record daily precipitation	38.6 mm (1.5 in)	40 of 100 (Notable)
Watertown	United States	Record low maximum temperature	3.3 C (37.9 F)	40 of 100 (Notable)
Santa Rita de Cassia	Brazil	Record daily precipitation	35.7 mm (1.4 in)	39 of 100 (Notable)
Los Alamos	United States	Record snow depth	30.5 cm (12.0 in)	39 of 100 (Notable)
Melrose	United States	Record daily snowfall	6.4 cm (2.5 in)	39 of 100 (Notable)
Doberlug-Kirchhain	Germany	Record daily precipitation	29.7 mm (1.2 in)	38 of 100 (Notable)
Tabankulu (Bos)	South Africa	Record daily precipitation	40.9 mm (1.6 in)	38 of 100 (Notable)
Conchas Dam	United States	Record snow depth	15.2 cm (6.0 in)	38 of 100 (Notable)
Dulce	United States	Record daily precipitation	36.6 mm (1.4 in)	38 of 100 (Notable)
Laguna	United States	Record daily snowfall	5.1 cm (2.0 in)	38 of 100 (Notable)
Springer	United States	Record daily snowfall	26.7 cm (10.5 in)	38 of 100 (Notable)
Konigstuhl	Germany	Record daily precipitation	44.5 mm (1.8 in)	37 of 100 (Notable)
Tg Jiu	Romania	Record daily precipitation	31.8 mm (1.3 in)	37 of 100 (Notable)
Healdsburg	United States	Record high minimum temperature	14.4 C (57.9 F)	37 of 100 (Notable)
Moosehead	United States	Record snow depth	25.4 cm (10.0 in)	37 of 100 (Notable)
Canton	United States	Record daily precipitation	26.9 mm (1.1 in)	37 of 100 (Notable)
Laguna	United States	Record daily precipitation	36.3 mm (1.4 in)	37 of 100 (Notable)

Counts by Type and Timescale

976 records

Records set or tied on 2 May 1978 by type: Highest daily maximum 35, Lowest daily maximum 260, Highest daily minimum 47, Lowest daily minimum 223, Heaviest daily rainfall 337, Heaviest daily snowfall 50, Deepest snow cover 24.

Records on 2 May 1978 by type
Record type	Records
Highest daily maximum	35
Lowest daily maximum	260
Highest daily minimum	47
Lowest daily minimum	223
Heaviest daily rainfall	337
Heaviest daily snowfall	50
Deepest snow cover	24

Records on 2 May 1978 by timescale: all-time 2, monthly 98, daily 876.

How Much Records Were Beaten By

785 broken records

Margins by which the 785 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 356.0. Ties are not counted.

Top 20 by Significance

2 May 1978

Top 20 records on 2 May 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 May 1978	Manassa, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	84 years	73 of 100 (Major)
2 May 1978	Las Vegas 2 NW, US	monthly snowfall	38.1 cm (15.0 in)	17.8 cm (7.0 in)	49 years	67 of 100 (Major)
2 May 1978	Ruy Barbosa, BR	monthly rain	79.8 mm (3.1 in)	25.8 mm (1.0 in)	40 years	63 of 100 (Major)
2 May 1978	Dilia, US	monthly snowfall	35.6 cm (14.0 in)	35.6 cm (14.0 in)	36 years	63 of 100 (Major)
2 May 1978	Jal, US	daily rain	38.1 mm (1.5 in)	38.1 mm (1.5 in)	59 years	63 of 100 (Major)
2 May 1978	Del Norte 3ENE, US	daily rain	26.2 mm (1.0 in)	21.1 mm (0.8 in)	49 years	62 of 100 (Major)
2 May 1978	Abbott 1 SE, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	68 years	62 of 100 (Major)
2 May 1978	Sandia Park, US	monthly snowfall	30.5 cm (12.0 in)	22.9 cm (9.0 in)	25 years	61 of 100 (Major)
2 May 1978	Las Vegas 2 NW, US	daily rain	50.8 mm (2.0 in)	38.1 mm (1.5 in)	43 years	60 of 100 (Major)
2 May 1978	Las Vegas Muni AP, US	monthly snowfall	26.4 cm (10.4 in)	18.8 cm (7.4 in)	22 years	56 of 100 (Notable)
2 May 1978	Gyzylarbat, TM	monthly rain	47.1 mm (1.9 in)	7.8 mm (0.31 in)	80 years	55 of 100 (Notable)
2 May 1978	Los Alamos, US	daily rain	31.5 mm (1.2 in)	22.6 mm (0.9 in)	47 years	55 of 100 (Notable)
2 May 1978	Sandia Park, US	daily rain	46.2 mm (1.8 in)	32.7 mm (1.3 in)	36 years	55 of 100 (Notable)
2 May 1978	Yeso 2 S, US	monthly snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	36 years	53 of 100 (Notable)
2 May 1978	Black Lake, US	daily rain	49.5 mm (1.9 in)	26.6 mm (1.0 in)	36 years	52 of 100 (Notable)
2 May 1978	Kelly Rch, US	daily rain	33.5 mm (1.3 in)	33.5 mm (1.3 in)	32 years	52 of 100 (Notable)
2 May 1978	Gernsheim-Allmendfeld, DE	daily rain	31.8 mm (1.3 in)	21.5 mm (0.8 in)	29 years	51 of 100 (Notable)
2 May 1978	Ntywenka (Bos), ZA	daily rain	55.0 mm (2.2 in)	48.0 mm (1.9 in)	21 years	51 of 100 (Notable)
2 May 1978	Conchas Dam, US	monthly snowfall	14.0 cm (5.5 in)	14.0 cm (5.5 in)	31 years	51 of 100 (Notable)
2 May 1978	Newkirk, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	52 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

1795 to 1978

Records set or tied on this calendar date in each year from 1795 to 1978. 1978 had 976 records.

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

Records on 05-02 in each year
Year	Records
1795	1
1804	1
1814	1
1835	1
1836	2
1845	1
1846	1
1849	1
1850	2
1852	1
1866	2
1868	2
1874	1
1875	1
1876	1
1877	2
1878	2
1879	1
1881	2
1883	1
1884	2
1885	1
1886	3
1887	1
1888	1
1889	2
1890	1
1891	4
1892	5
1893	1
1894	4
1895	1
1896	4
1897	2
1898	6
1899	9
1900	1
1901	6
1902	5
1903	14
1904	25
1905	19
1906	15
1907	22
1908	11
1909	48
1910	21
1911	34
1912	26
1913	132
1914	33
1915	25
1916	21
1917	52
1918	21
1919	52
1920	73
1921	31
1922	219
1923	58
1924	57
1925	123
1926	323
1927	125
1928	164
1929	336
1930	366
1931	237
1932	113
1933	584
1934	337
1935	509
1936	305
1937	278
1938	411
1939	273
1940	587
1941	510
1942	600
1943	542
1944	727
1945	522
1946	321
1947	794
1948	874
1949	561
1950	651
1951	509
1952	445
1953	1,009
1954	1,317
1955	977
1956	1,261
1957	371
1958	380
1959	1,030
1960	571
1961	670
1962	396
1963	685
1964	656
1965	314
1966	779
1967	1,123
1968	440
1969	338
1970	670
1971	421
1972	336
1973	711
1974	456
1975	337
1976	660
1977	579
1978	976
1979	743
1980	449
1981	1,009
1982	537
1983	1,808
1984	712
1985	1,062
1986	631
1987	763
1988	1,142
1989	1,009
1990	1,567
1991	587
1992	1,014
1993	1,017
1994	937
1995	1,166
1996	1,076
1997	750
1998	1,043
1999	838
2000	931
2001	1,256
2002	1,263
2003	787
2004	1,344
2005	1,785
2006	577
2007	867
2008	963
2009	898
2010	1,629
2011	936
2012	1,103
2013	1,486
2014	696
2015	582
2016	583
2017	601
2018	768
2019	622
2020	798
2021	572
2022	440
2023	951
2024	880
2025	569
2026	765

Download the Data

Data for records on 1978-05-02: 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 50	746
50 to 100	18
100 to 150	10
150 to 200	7
200 to 250	2
250 to 300	1
300 to 350	0
350 to 400	1