Weather Records on 30 May 1988

1,371 weather records were set or tied worldwide on 30 May 1988. Highest significance: Ganca, AZ.

Key Facts for 30 May 1988

On 30 May 1988, 1,371 weather records were set or tied at long-record stations worldwide.
560 were record highs and 439 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 72 monthly and 1,299 daily.
Ganca set a monthly record daily precipitation of 57.4 mm (2.3 in) on 30 May 1988.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 433 records.

Record Map

1,371 stations

1,371 station records on 30 May 1988 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1988: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ganca	Azerbaijan	Record daily precipitation	57.4 mm (2.3 in)	68 of 100 (Major)
May 2SSE	United States	Record daily precipitation	27.9 mm (1.1 in)	58 of 100 (Notable)
Hissmofors	Sweden	Record daily precipitation	48.0 mm (1.9 in)	55 of 100 (Notable)
Guiping	China	Record daily precipitation	129.1 mm (5.1 in)	53 of 100 (Notable)
Butte Bert Mooney AP	United States	Record daily precipitation	28.4 mm (1.1 in)	52 of 100 (Notable)
Boulder	United States	Record daily precipitation	29.7 mm (1.2 in)	48 of 100 (Notable)
Sula 2 SE (Sula Rs)	United States	Record daily precipitation	35.1 mm (1.4 in)	48 of 100 (Notable)
Grand Forks UNIV (NWS)	United States	Record high minimum temperature	20.6 C (69.1 F)	48 of 100 (Notable)
Dodre	Sweden	Record daily precipitation	26.1 mm (1.0 in)	47 of 100 (Notable)
Evlakh Airport	Azerbaijan	Record daily precipitation	63.7 mm (2.5 in)	46 of 100 (Notable)
Austin #2	United States	Record snow depth	12.7 cm (5.0 in)	46 of 100 (Notable)
Minersville	United States	Record daily snowfall	5.1 cm (2.0 in)	45 of 100 (Notable)
Bugt	China	Record daily precipitation	33.4 mm (1.3 in)	44 of 100 (Notable)
Megri	Armenia	Record daily precipitation	26.7 mm (1.1 in)	43 of 100 (Notable)
Virginia City	United States	Record daily snowfall	5.1 cm (2.0 in)	43 of 100 (Notable)
Garrison	United States	Record daily snowfall	5.1 cm (2.0 in)	43 of 100 (Notable)
Mingachevir	Azerbaijan	Record daily precipitation	45.9 mm (1.8 in)	42 of 100 (Notable)
Estrada de Cunha	Brazil	Record daily precipitation	32.6 mm (1.3 in)	42 of 100 (Notable)
Guararema	Brazil	Record daily precipitation	55.6 mm (2.2 in)	42 of 100 (Notable)
Yreka	United States	Record low minimum temperature	-4.4 C (24.1 F)	42 of 100 (Notable)
Camp Crook	United States	Record high minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Sharon Springs	United States	Record high minimum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Wells	United States	Record low maximum temperature	3.9 C (39.0 F)	41 of 100 (Notable)
Fillmore	United States	Record low maximum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Milford	United States	Record daily snowfall	6.9 cm (2.7 in)	41 of 100 (Notable)
Tooele	United States	Record low maximum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Gooding 2 S	United States	Record low maximum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Rinconada	Mexico	Record low minimum temperature	15.0 C (59.0 F)	40 of 100 (Notable)
Dry Canyon Rsvr	United States	Record low minimum temperature	-2.2 C (28.0 F)	40 of 100 (Notable)
Richfield	United States	Record low maximum temperature	5.6 C (42.1 F)	40 of 100 (Notable)
Arthur 4NW	United States	Record daily snowfall	5.1 cm (2.0 in)	40 of 100 (Notable)
Deadwood	United States	Record high minimum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Blanco	United States	Record daily precipitation	44.5 mm (1.8 in)	40 of 100 (Notable)
Jambeiro	Brazil	Record daily precipitation	65.8 mm (2.6 in)	39 of 100 (Notable)
Varadouro	Brazil	Record daily precipitation	63.3 mm (2.5 in)	39 of 100 (Notable)
Cedarville	United States	Record low maximum temperature	7.8 C (46.0 F)	39 of 100 (Notable)
Castle Rock	United States	Record high minimum temperature	14.4 C (57.9 F)	39 of 100 (Notable)
Telluride 4WNW	United States	Record daily snowfall	15.2 cm (6.0 in)	39 of 100 (Notable)
Deland 1 SSE	United States	Record low minimum temperature	11.7 C (53.1 F)	39 of 100 (Notable)
Hollister	United States	Record low maximum temperature	4.4 C (39.9 F)	39 of 100 (Notable)
Glendive	United States	Record high maximum temperature	38.3 C (100.9 F)	39 of 100 (Notable)
Deseret	United States	Record low maximum temperature	11.1 C (52.0 F)	39 of 100 (Notable)
Elberta	United States	Record low maximum temperature	11.7 C (53.1 F)	39 of 100 (Notable)
Garrison	United States	Record low maximum temperature	11.1 C (52.0 F)	39 of 100 (Notable)
Marysvale	United States	Record low maximum temperature	10.6 C (51.1 F)	39 of 100 (Notable)
Chilton	United States	Record high maximum temperature	32.2 C (90.0 F)	39 of 100 (Notable)
Drummond Aviation	United States	Record daily precipitation	33.0 mm (1.3 in)	39 of 100 (Notable)
Ocala	United States	Record low minimum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Blanding	United States	Record low maximum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Fillmore	United States	Record daily snowfall	5.1 cm (2.0 in)	38 of 100 (Notable)
Loa	United States	Record low maximum temperature	10.0 C (50.0 F)	38 of 100 (Notable)
Dillon AP	United States	Record daily precipitation	27.7 mm (1.1 in)	38 of 100 (Notable)
Aldeinha	Brazil	Record daily precipitation	48.9 mm (1.9 in)	37 of 100 (Notable)
La Junta	Mexico	Record low minimum temperature	0.6 C (33.1 F)	37 of 100 (Notable)
Saint Johns	United States	Record low maximum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Willits 1 NE	United States	Record low minimum temperature	-0.6 C (30.9 F)	37 of 100 (Notable)
Beulah	United States	Record low maximum temperature	12.2 C (54.0 F)	37 of 100 (Notable)
Black Rock	United States	Record low maximum temperature	11.7 C (53.1 F)	37 of 100 (Notable)
Monticello 2E	United States	Record low maximum temperature	10.0 C (50.0 F)	37 of 100 (Notable)
Oak City	United States	Record low maximum temperature	10.0 C (50.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

1,371 records

Records set or tied on 30 May 1988 by type: Highest daily maximum 210, Lowest daily maximum 269, Highest daily minimum 350, Lowest daily minimum 170, Heaviest daily rainfall 325, Heaviest daily snowfall 32, Deepest snow cover 15.

Records on 30 May 1988 by type
Record type	Records
Highest daily maximum	210
Lowest daily maximum	269
Highest daily minimum	350
Lowest daily minimum	170
Heaviest daily rainfall	325
Heaviest daily snowfall	32
Deepest snow cover	15

Records on 30 May 1988 by timescale: all-time 0, monthly 72, daily 1,299.

How Much Records Were Beaten By

1,106 broken records

Margins by which the 1,106 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.0. Ties are not counted.

Top 20 by Significance

30 May 1988

Top 20 records on 30 May 1988 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1988	Ganca, AZ	monthly rain	57.4 mm (2.3 in)	25.1 mm (1.0 in)	27 years	68 of 100 (Major)
30 May 1988	May 2SSE, US	daily rain	27.9 mm (1.1 in)	19.8 mm (0.8 in)	46 years	58 of 100 (Notable)
30 May 1988	Hissmofors, SE	monthly rain	48.0 mm (1.9 in)	18.8 mm (0.7 in)	6 years	55 of 100 (Notable)
30 May 1988	Guiping, CN	daily rain	129.1 mm (5.1 in)	85.1 mm (3.4 in)	35 years	53 of 100 (Notable)
30 May 1988	Butte Bert Mooney AP, US	daily rain	28.4 mm (1.1 in)	10.6 mm (0.4 in)	80 years	52 of 100 (Notable)
30 May 1988	Boulder, US	daily rain	29.7 mm (1.2 in)	18.3 mm (0.7 in)	14 years	48 of 100 (Notable)
30 May 1988	Sula 2 SE (Sula Rs), US	daily rain	35.1 mm (1.4 in)	23.9 mm (0.9 in)	19 years	48 of 100 (Notable)
30 May 1988	Grand Forks UNIV (NWS), US	monthly high min	20.6 C (69.1 F)	0.6 C (1.1 F)	94 years	48 of 100 (Notable)
30 May 1988	Dodre, SE	daily rain	26.1 mm (1.0 in)	17.9 mm (0.7 in)	16 years	47 of 100 (Notable)
30 May 1988	Evlakh Airport, AZ	daily rain	63.7 mm (2.5 in)	45.4 mm (1.8 in)	10 years	46 of 100 (Notable)
30 May 1988	Austin #2, US	daily snow depth	12.7 cm (5.0 in)	12.7 cm (5.0 in)	73 years	46 of 100 (Notable)
30 May 1988	Minersville, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	87 years	45 of 100 (Notable)
30 May 1988	Bugt, CN	daily rain	33.4 mm (1.3 in)	16.9 mm (0.7 in)	33 years	44 of 100 (Notable)
30 May 1988	Megri, AM	daily rain	26.7 mm (1.1 in)	15.7 mm (0.6 in)	30 years	43 of 100 (Notable)
30 May 1988	Virginia City, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	94 years	43 of 100 (Notable)
30 May 1988	Garrison, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	85 years	43 of 100 (Notable)
30 May 1988	Mingachevir, AZ	daily rain	45.9 mm (1.8 in)	25.4 mm (1.0 in)	10 years	42 of 100 (Notable)
30 May 1988	Estrada de Cunha, BR	daily rain	32.6 mm (1.3 in)	27.8 mm (1.1 in)	24 years	42 of 100 (Notable)
30 May 1988	Guararema, BR	daily rain	55.6 mm (2.2 in)	36.0 mm (1.4 in)	5 years	42 of 100 (Notable)
30 May 1988	Yreka, US	daily low min	-4.4 C (24.1 F)	2.7 C (4.9 F)	89 years	42 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

1818 to 1988

Records set or tied on this calendar date in each year from 1818 to 1988. 1988 had 1,371 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1988-05-30: 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	1,036
20 to 40	48
40 to 60	12
60 to 80	5
80 to 100	2
100 to 120	2
120 to 140	1