Weather Records on 28 May 1970

310 weather records were set or tied worldwide on 28 May 1970. Highest significance: Primghar, US.

Key Facts for 28 May 1970

On 28 May 1970, 310 weather records were set or tied at long-record stations worldwide.
44 were record highs and 103 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 300 daily.
Primghar set a daily record precipitation of 67.8 mm (2.7 in) on 28 May 1970.
Across 161 earlier years (1794 to 2026) the same calendar date averaged 443 records.

Record Map

310 stations

310 station records on 28 May 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 28 May 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Primghar	United States	Record daily precipitation	67.8 mm (2.7 in)	64 of 100 (Major)
Farmington 3NW	United States	Record daily precipitation	47.8 mm (1.9 in)	57 of 100 (Notable)
Theilman 1SSW	United States	Record daily precipitation	50.8 mm (2.0 in)	51 of 100 (Notable)
Kennebec	United States	Record daily precipitation	58.4 mm (2.3 in)	49 of 100 (Notable)
Chaska	United States	Record daily precipitation	53.3 mm (2.1 in)	47 of 100 (Notable)
Pratt 3NW	United States	Record daily precipitation	71.9 mm (2.8 in)	46 of 100 (Notable)
Mtn View 91	United States	Record daily precipitation	105.7 mm (4.2 in)	45 of 100 (Notable)
Zumbrota	United States	Record daily precipitation	45.5 mm (1.8 in)	44 of 100 (Notable)
Sparta	United States	Record daily precipitation	47.2 mm (1.9 in)	42 of 100 (Notable)
Honaunau 27	United States	Record daily precipitation	40.9 mm (1.6 in)	42 of 100 (Notable)
Stevens Pt	United States	Record daily precipitation	48.0 mm (1.9 in)	41 of 100 (Notable)
Hadagalli	India	Record daily precipitation	68.1 mm (2.7 in)	40 of 100 (Notable)
Sioux Ctr 2 SE	United States	Record daily precipitation	75.9 mm (3.0 in)	38 of 100 (Notable)
Udipi	India	Record daily precipitation	133.0 mm (5.2 in)	37 of 100 (Notable)
Louisville 1 E	United States	Record daily precipitation	86.4 mm (3.4 in)	37 of 100 (Notable)
Mundagod	India	Record daily precipitation	57.4 mm (2.3 in)	36 of 100 (Notable)
Yemmiganur	India	Record daily precipitation	31.1 mm (1.2 in)	35 of 100 (Notable)
Collingwood	Canada	Record low minimum temperature	0.6 C (33.1 F)	34 of 100 (Routine)
Udayagiri	India	Record daily precipitation	59.5 mm (2.3 in)	33 of 100 (Routine)
Eastman 1 W	United States	Record daily precipitation	73.7 mm (2.9 in)	33 of 100 (Routine)
Adoni	India	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Nagaur (Nagore )	India	Record daily precipitation	33.8 mm (1.3 in)	32 of 100 (Routine)
Sathenapalli	India	Record daily precipitation	50.0 mm (2.0 in)	31 of 100 (Routine)
Sapulpa 1W	United States	Record daily precipitation	63.5 mm (2.5 in)	31 of 100 (Routine)
Kalahasti	India	Record daily precipitation	27.8 mm (1.1 in)	30 of 100 (Routine)
Devala	India	Record daily precipitation	70.0 mm (2.8 in)	30 of 100 (Routine)
Nellore	India	Record daily precipitation	25.9 mm (1.0 in)	29 of 100 (Routine)
Ear Falls	Canada	Record daily precipitation	31.0 mm (1.2 in)	28 of 100 (Routine)
Kavali	India	Record daily precipitation	33.8 mm (1.3 in)	28 of 100 (Routine)
Bellary	India	Record daily precipitation	31.0 mm (1.2 in)	28 of 100 (Routine)
Shirala	India	Record daily precipitation	45.0 mm (1.8 in)	28 of 100 (Routine)
Blair	United States	Record daily precipitation	48.8 mm (1.9 in)	28 of 100 (Routine)
Sunticoppa	India	Record daily precipitation	33.0 mm (1.3 in)	27 of 100 (Routine)
Charles City	United States	Record daily precipitation	55.1 mm (2.2 in)	27 of 100 (Routine)
Brocken	Germany	Record snow depth	60.0 cm (23.6 in)	26 of 100 (Routine)
Hangal	India	Record daily precipitation	36.2 mm (1.4 in)	26 of 100 (Routine)
Haveri	India	Record daily precipitation	35.4 mm (1.4 in)	26 of 100 (Routine)
Panchgani	India	Record daily precipitation	28.5 mm (1.1 in)	26 of 100 (Routine)
Badiraguato (Smn)	Mexico	Record low minimum temperature	6.7 C (44.1 F)	26 of 100 (Routine)
Chesterfield	Canada	Record high maximum temperature	8.3 C (46.9 F)	25 of 100 (Routine)
Aloograda	India	Record daily precipitation	25.9 mm (1.0 in)	25 of 100 (Routine)
Sorab	India	Record daily precipitation	30.7 mm (1.2 in)	25 of 100 (Routine)
Ocosingo	Mexico	Record low maximum temperature	26.7 C (80.1 F)	25 of 100 (Routine)
Pahoa 65	United States	Record daily precipitation	59.4 mm (2.3 in)	25 of 100 (Routine)
Canton 4 SE	United States	Record low minimum temperature	-0.6 C (30.9 F)	25 of 100 (Routine)
Rapur	India	Record daily precipitation	26.4 mm (1.0 in)	24 of 100 (Routine)
Vadgaon (Maval)	India	Record daily precipitation	34.0 mm (1.3 in)	24 of 100 (Routine)
Minnesota City Dam 5	United States	Record daily precipitation	38.4 mm (1.5 in)	24 of 100 (Routine)
Hatfield	United States	Record daily precipitation	59.7 mm (2.4 in)	24 of 100 (Routine)
Nominingue	Canada	Record low minimum temperature	-3.3 C (26.1 F)	23 of 100 (Routine)
Ville Marie	Canada	Record low minimum temperature	-3.3 C (26.1 F)	23 of 100 (Routine)
Gannavaram	India	Record daily precipitation	51.0 mm (2.0 in)	23 of 100 (Routine)
Isakapally	India	Record daily precipitation	32.2 mm (1.3 in)	23 of 100 (Routine)
Kenora A	Canada	Record daily precipitation	25.9 mm (1.0 in)	22 of 100 (Routine)
Niznij Novgorod	Russia	Record low maximum temperature	8.1 C (46.6 F)	22 of 100 (Routine)
Alma Dam 4	United States	Record daily precipitation	85.1 mm (3.4 in)	22 of 100 (Routine)
Marshfield Exp Farm	United States	Record daily precipitation	31.8 mm (1.3 in)	22 of 100 (Routine)
Pine Bluffs	United States	Record high minimum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Hedley	Canada	Record low maximum temperature	12.2 C (54.0 F)	21 of 100 (Routine)
Dhone	India	Record daily precipitation	31.0 mm (1.2 in)	21 of 100 (Routine)

Counts by Type and Timescale

310 records

Records set or tied on 28 May 1970 by type: Highest daily maximum 11, Lowest daily maximum 47, Highest daily minimum 33, Lowest daily minimum 56, Heaviest daily rainfall 160, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 28 May 1970 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	47
Highest daily minimum	33
Lowest daily minimum	56
Heaviest daily rainfall	160
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 28 May 1970 by timescale: all-time 0, monthly 10, daily 300.

How Much Records Were Beaten By

251 broken records

Margins by which the 251 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 530.0. Ties are not counted.

Top 20 by Significance

28 May 1970

Top 20 records on 28 May 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 May 1970	Primghar, US	daily rain	67.8 mm (2.7 in)	38.6 mm (1.5 in)	70 years	64 of 100 (Major)
28 May 1970	Farmington 3NW, US	daily rain	47.8 mm (1.9 in)	28.7 mm (1.1 in)	74 years	57 of 100 (Notable)
28 May 1970	Theilman 1SSW, US	daily rain	50.8 mm (2.0 in)	35.6 mm (1.4 in)	31 years	51 of 100 (Notable)
28 May 1970	Kennebec, US	daily rain	58.4 mm (2.3 in)	30.0 mm (1.2 in)	44 years	49 of 100 (Notable)
28 May 1970	Chaska, US	daily rain	53.3 mm (2.1 in)	39.1 mm (1.5 in)	39 years	47 of 100 (Notable)
28 May 1970	Pratt 3NW, US	daily rain	71.9 mm (2.8 in)	36.3 mm (1.4 in)	35 years	46 of 100 (Notable)
28 May 1970	Mtn View 91, US	daily rain	105.7 mm (4.2 in)	41.7 mm (1.6 in)	53 years	45 of 100 (Notable)
28 May 1970	Zumbrota, US	daily rain	45.5 mm (1.8 in)	20.9 mm (0.8 in)	61 years	44 of 100 (Notable)
28 May 1970	Sparta, US	daily rain	47.2 mm (1.9 in)	30.7 mm (1.2 in)	11 years	42 of 100 (Notable)
28 May 1970	Honaunau 27, US	daily rain	40.9 mm (1.6 in)	22.1 mm (0.9 in)	32 years	42 of 100 (Notable)
28 May 1970	Stevens Pt, US	daily rain	48.0 mm (1.9 in)	30.2 mm (1.2 in)	28 years	41 of 100 (Notable)
28 May 1970	Hadagalli, IN	daily rain	68.1 mm (2.7 in)	21.9 mm (0.9 in)	65 years	40 of 100 (Notable)
28 May 1970	Sioux Ctr 2 SE, US	daily rain	75.9 mm (3.0 in)	24.6 mm (1.0 in)	40 years	38 of 100 (Notable)
28 May 1970	Udipi, IN	daily rain	133.0 mm (5.2 in)	45.6 mm (1.8 in)	47 years	37 of 100 (Notable)
28 May 1970	Louisville 1 E, US	daily rain	86.4 mm (3.4 in)	45.8 mm (1.8 in)	1 year	37 of 100 (Notable)
28 May 1970	Mundagod, IN	daily rain	57.4 mm (2.3 in)	32.3 mm (1.3 in)	31 years	36 of 100 (Notable)
28 May 1970	Yemmiganur, IN	daily rain	31.1 mm (1.2 in)	17.1 mm (0.7 in)	56 years	35 of 100 (Notable)
28 May 1970	Collingwood, CA	daily low min	0.6 C (33.1 F)	1.6 C (2.9 F)	75 years	34 of 100 (Routine)
28 May 1970	Udayagiri, IN	daily rain	59.5 mm (2.3 in)	43.5 mm (1.7 in)	36 years	33 of 100 (Routine)
28 May 1970	Eastman 1 W, US	daily rain	73.7 mm (2.9 in)	18.1 mm (0.7 in)	48 years	33 of 100 (Routine)

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

1794 to 1970

Records set or tied on this calendar date in each year from 1794 to 1970. 1970 had 310 records.

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

Records on 05-28 in each year
Year	Records
1794	1
1797	1
1811	1
1824	1
1832	1
1836	5
1840	1
1841	1
1847	2
1848	1
1851	2
1857	1
1858	1
1863	1
1865	1
1868	4
1869	1
1876	1
1879	2
1880	2
1884	3
1885	2
1887	1
1888	3
1889	3
1890	3
1891	2
1892	9
1893	2
1894	9
1895	1
1896	5
1897	6
1898	1
1899	6
1900	4
1901	6
1902	12
1903	9
1904	6
1905	14
1906	31
1907	36
1908	26
1909	7
1910	18
1911	42
1912	19
1913	28
1914	58
1915	27
1916	24
1917	36
1918	43
1919	43
1920	33
1921	87
1922	80
1923	72
1924	109
1925	122
1926	143
1927	301
1928	150
1929	355
1930	131
1931	574
1932	171
1933	212
1934	537
1935	186
1936	337
1937	212
1938	285
1939	433
1940	217
1941	711
1942	279
1943	238
1944	330
1945	331
1946	413
1947	1,049
1948	333
1949	321
1950	276
1951	503
1952	314
1953	392
1954	382
1955	413
1956	456
1957	272
1958	792
1959	557
1960	431
1961	1,026
1962	859
1963	368
1964	394
1965	536
1966	284
1967	350
1968	610
1969	863
1970	310
1971	767
1972	575
1973	834
1974	585
1975	397
1976	914
1977	826
1978	802
1979	521
1980	808
1981	711
1982	1,204
1983	1,666
1984	1,357
1985	914
1986	591
1987	1,139
1988	806
1989	817
1990	1,024
1991	1,647
1992	1,610
1993	870
1994	981
1995	1,078
1996	1,438
1997	1,108
1998	1,043
1999	952
2000	1,229
2001	1,024
2002	612
2003	1,049
2004	875
2005	1,032
2006	1,566
2007	1,084
2008	902
2009	733
2010	937
2011	1,188
2012	1,237
2013	541
2014	781
2015	487
2016	625
2017	710
2018	1,348
2019	973
2020	875
2021	537
2022	476
2023	445
2024	907
2025	663
2026	1,053

Download the Data

Data for records on 1970-05-28: 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 100	249
100 to 200	1
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	1