Weather Records on 4 May 1991

1,088 weather records were set or tied worldwide on 4 May 1991. Highest significance: Rolla 1NE, US.

Key Facts for 4 May 1991

On 4 May 1991, 1,088 weather records were set or tied at long-record stations worldwide.
296 were record highs and 418 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 64 monthly and 1,018 daily.
Rolla 1NE set a monthly record daily snowfall of 30.5 cm (12.0 in) on 4 May 1991.
Across 163 earlier years (1795 to 2026) the same calendar date averaged 426 records.

Record Map

1,088 stations

1,088 station records on 4 May 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 May 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rolla 1NE	United States	Record daily snowfall	30.5 cm (12.0 in)	70 of 100 (Major)
Calhoun 2 N	United States	Record daily precipitation	150.9 mm (5.9 in)	61 of 100 (Major)
Throckmorton	United States	Record daily precipitation	113.5 mm (4.5 in)	56 of 100 (Notable)
Edgeley 3WNW	United States	Record daily snowfall	15.5 cm (6.1 in)	54 of 100 (Notable)
Towner 2 NE	United States	Record daily snowfall	11.4 cm (4.5 in)	53 of 100 (Notable)
Hansboro 4 NNE	United States	Record daily snowfall	15.2 cm (6.0 in)	50 of 100 (Notable)
Muntadgin	Australia	Record daily precipitation	38.0 mm (1.5 in)	49 of 100 (Notable)
Langdon Exp Farm	United States	Record daily snowfall	15.2 cm (6.0 in)	49 of 100 (Notable)
Nix Store 1 W	United States	Record daily precipitation	109.5 mm (4.3 in)	49 of 100 (Notable)
Foxholm 7 N	United States	Record daily snowfall	9.7 cm (3.8 in)	48 of 100 (Notable)
Border 3 N	United States	Record daily snowfall	5.1 cm (2.0 in)	46 of 100 (Notable)
Mohall	United States	Record daily snowfall	10.2 cm (4.0 in)	44 of 100 (Notable)
Izmail	Ukraine	Record high minimum temperature	15.0 C (59.0 F)	43 of 100 (Notable)
Douglasville 4 S	United States	Record daily precipitation	77.0 mm (3.0 in)	43 of 100 (Notable)
Canton L&D 20	United States	Record daily precipitation	88.6 mm (3.5 in)	43 of 100 (Notable)
Belcourt Keya Radio	United States	Record daily snowfall	11.4 cm (4.5 in)	43 of 100 (Notable)
Cavalier 7NW	United States	Record daily snowfall	12.7 cm (5.0 in)	43 of 100 (Notable)
Granville	United States	Record low maximum temperature	0.6 C (33.1 F)	43 of 100 (Notable)
Alvin	United States	Record high minimum temperature	23.9 C (75.0 F)	42 of 100 (Notable)
Napoleon	United States	Record daily snowfall	19.1 cm (7.5 in)	41 of 100 (Notable)
Soldier Summit	United States	Record low minimum temperature	-15.0 C (5.0 F)	41 of 100 (Notable)
Devils Lake Kdlr	United States	Record daily snowfall	15.2 cm (6.0 in)	41 of 100 (Notable)
La Moure	United States	Record daily precipitation	29.2 mm (1.1 in)	40 of 100 (Notable)
Rantoul	United States	Record daily precipitation	39.4 mm (1.6 in)	40 of 100 (Notable)
Lincoln	United States	Record daily precipitation	54.1 mm (2.1 in)	39 of 100 (Notable)
Steele 4N	United States	Record daily snowfall	20.3 cm (8.0 in)	39 of 100 (Notable)
Upham 3 N	United States	Record daily snowfall	16.5 cm (6.5 in)	39 of 100 (Notable)
Palestine 2 NE	United States	Record daily precipitation	76.2 mm (3.0 in)	39 of 100 (Notable)
Birni N'Konni	Niger	Record low maximum temperature	31.0 C (87.8 F)	38 of 100 (Notable)
Ivdel	Russia	Record high minimum temperature	14.8 C (58.6 F)	38 of 100 (Notable)
Petersburg 2 N	United States	Record daily snowfall	15.2 cm (6.0 in)	38 of 100 (Notable)
Towner 2 NE	United States	Record snow depth	12.7 cm (5.0 in)	38 of 100 (Notable)
Belton Dam	United States	Record daily precipitation	64.8 mm (2.6 in)	38 of 100 (Notable)
Marlin	United States	Record daily precipitation	65.3 mm (2.6 in)	38 of 100 (Notable)
Ruston la Tech	United States	Record daily precipitation	97.8 mm (3.9 in)	37 of 100 (Notable)
Luverne	United States	Record low maximum temperature	8.3 C (46.9 F)	37 of 100 (Notable)
Warrenton 1 N	United States	Record daily precipitation	44.5 mm (1.8 in)	37 of 100 (Notable)
Hillsboro	United States	Record low minimum temperature	0.0 C (32.0 F)	37 of 100 (Notable)
Forman 5 SSE	United States	Record daily precipitation	34.3 mm (1.4 in)	37 of 100 (Notable)
Sykeston	United States	Record daily precipitation	30.5 mm (1.2 in)	37 of 100 (Notable)
Upham 3 N	United States	Record snow depth	12.7 cm (5.0 in)	37 of 100 (Notable)
Alto 5 SW	United States	Record daily precipitation	87.6 mm (3.4 in)	37 of 100 (Notable)
Jarrell	United States	Record daily precipitation	50.8 mm (2.0 in)	37 of 100 (Notable)
Bungulla	Australia	Record daily precipitation	36.0 mm (1.4 in)	36 of 100 (Notable)
Friars Well	Australia	Record daily precipitation	33.6 mm (1.3 in)	36 of 100 (Notable)
Lamoni	United States	Record daily precipitation	31.8 mm (1.3 in)	36 of 100 (Notable)
Garrison	United States	Record daily snowfall	12.7 cm (5.0 in)	36 of 100 (Notable)
Wahpeton 3 N	United States	Record daily precipitation	32.3 mm (1.3 in)	36 of 100 (Notable)
Lampasas	United States	Record daily precipitation	77.5 mm (3.1 in)	36 of 100 (Notable)
Quella Park	Australia	Record daily precipitation	29.4 mm (1.2 in)	35 of 100 (Notable)
Urunga (Sunset Place)	Australia	Record daily precipitation	77.0 mm (3.0 in)	35 of 100 (Notable)
Bastrop	United States	Record daily precipitation	88.6 mm (3.5 in)	35 of 100 (Notable)
Jennings	United States	Record high minimum temperature	23.3 C (73.9 F)	35 of 100 (Notable)
Tallulah	United States	Record daily precipitation	90.7 mm (3.6 in)	35 of 100 (Notable)
Crystal Springs Exp STN	United States	Record daily precipitation	36.3 mm (1.4 in)	35 of 100 (Notable)
Rolla 1NE	United States	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Walhalla 1 SW	United States	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Sugar Land	United States	Record high minimum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Eagle FAA AP	United States	Record low maximum temperature	9.4 C (48.9 F)	35 of 100 (Notable)
Sioux Ctr 2 SE	United States	Record low maximum temperature	8.9 C (48.0 F)	34 of 100 (Routine)

Counts by Type and Timescale

1,088 records

Records set or tied on 4 May 1991 by type: Highest daily maximum 116, Lowest daily maximum 254, Highest daily minimum 180, Lowest daily minimum 164, Heaviest daily rainfall 282, Heaviest daily snowfall 56, Deepest snow cover 36.

Records on 4 May 1991 by type
Record type	Records
Highest daily maximum	116
Lowest daily maximum	254
Highest daily minimum	180
Lowest daily minimum	164
Heaviest daily rainfall	282
Heaviest daily snowfall	56
Deepest snow cover	36

Records on 4 May 1991 by timescale: all-time 6, monthly 64, daily 1,018.

How Much Records Were Beaten By

867 broken records

Margins by which the 867 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 139.0. Ties are not counted.

Top 20 by Significance

4 May 1991

Top 20 records on 4 May 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 May 1991	Rolla 1NE, US	monthly snowfall	30.5 cm (12.0 in)	13.5 cm (5.3 in)	85 years	70 of 100 (Major)
4 May 1991	Calhoun 2 N, US	daily rain	150.9 mm (5.9 in)	71.1 mm (2.8 in)	57 years	61 of 100 (Major)
4 May 1991	Throckmorton, US	daily rain	113.5 mm (4.5 in)	63.5 mm (2.5 in)	33 years	56 of 100 (Notable)
4 May 1991	Edgeley 3WNW, US	monthly snowfall	15.5 cm (6.1 in)	5.3 cm (2.1 in)	85 years	54 of 100 (Notable)
4 May 1991	Towner 2 NE, US	daily snowfall	11.4 cm (4.5 in)	11.4 cm (4.5 in)	76 years	53 of 100 (Notable)
4 May 1991	Hansboro 4 NNE, US	monthly snowfall	15.2 cm (6.0 in)	5.0 cm (2.0 in)	75 years	50 of 100 (Notable)
4 May 1991	Muntadgin, AU	daily rain	38.0 mm (1.5 in)	18.9 mm (0.7 in)	60 years	49 of 100 (Notable)
4 May 1991	Langdon Exp Farm, US	daily snowfall	15.2 cm (6.0 in)	13.9 cm (5.5 in)	40 years	49 of 100 (Notable)
4 May 1991	Nix Store 1 W, US	daily rain	109.5 mm (4.3 in)	81.6 mm (3.2 in)	22 years	49 of 100 (Notable)
4 May 1991	Foxholm 7 N, US	daily snowfall	9.7 cm (3.8 in)	9.7 cm (3.8 in)	69 years	48 of 100 (Notable)
4 May 1991	Border 3 N, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	88 years	46 of 100 (Notable)
4 May 1991	Mohall, US	daily snowfall	10.2 cm (4.0 in)	7.7 cm (3.0 in)	66 years	44 of 100 (Notable)
4 May 1991	Izmail, UA	daily high min	15.0 C (59.0 F)	1.1 C (2.0 F)	102 years	43 of 100 (Notable)
4 May 1991	Douglasville 4 S, US	daily rain	77.0 mm (3.0 in)	49.6 mm (2.0 in)	33 years	43 of 100 (Notable)
4 May 1991	Canton L&D 20, US	daily rain	88.6 mm (3.5 in)	45.9 mm (1.8 in)	0 years	43 of 100 (Notable)
4 May 1991	Belcourt Keya Radio, US	daily snowfall	11.4 cm (4.5 in)	8.9 cm (3.5 in)	40 years	43 of 100 (Notable)
4 May 1991	Cavalier 7NW, US	daily snowfall	12.7 cm (5.0 in)	11.7 cm (4.6 in)	46 years	43 of 100 (Notable)
4 May 1991	Granville, US	monthly low max	0.6 C (33.1 F)	0.5 C (0.9 F)	84 years	43 of 100 (Notable)
4 May 1991	Alvin, US	daily high min	23.9 C (75.0 F)	3.9 C (7.0 F)	78 years	42 of 100 (Notable)
4 May 1991	Napoleon, US	daily snowfall	19.1 cm (7.5 in)	3.9 cm (1.5 in)	85 years	41 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 1991

Records set or tied on this calendar date in each year from 1795 to 1991. 1991 had 1,088 records.

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

Records on 05-04 in each year
Year	Records
1795	1
1796	1
1820	1
1836	2
1840	1
1847	1
1850	2
1851	2
1852	1
1856	3
1858	1
1859	1
1861	2
1862	1
1864	3
1865	2
1868	3
1869	1
1870	2
1875	1
1877	2
1878	1
1879	1
1880	1
1882	1
1885	1
1886	1
1888	1
1889	4
1890	1
1892	4
1893	3
1894	6
1895	3
1896	3
1897	2
1898	2
1899	2
1900	2
1902	5
1903	8
1904	8
1905	19
1906	5
1907	37
1908	18
1909	13
1910	14
1911	37
1912	12
1913	63
1914	21
1915	75
1916	57
1917	60
1918	30
1919	69
1920	43
1921	62
1922	283
1923	82
1924	88
1925	80
1926	230
1927	112
1928	205
1929	177
1930	269
1931	169
1932	104
1933	274
1934	456
1935	518
1936	313
1937	230
1938	445
1939	295
1940	602
1941	436
1942	820
1943	358
1944	872
1945	654
1946	463
1947	649
1948	578
1949	1,130
1950	953
1951	292
1952	698
1953	389
1954	1,045
1955	471
1956	433
1957	433
1958	414
1959	613
1960	443
1961	466
1962	265
1963	313
1964	570
1965	433
1966	1,113
1967	928
1968	304
1969	377
1970	454
1971	810
1972	364
1973	313
1974	367
1975	683
1976	554
1977	736
1978	1,016
1979	1,529
1980	511
1981	667
1982	591
1983	539
1984	885
1985	821
1986	1,128
1987	1,004
1988	591
1989	743
1990	1,461
1991	1,088
1992	933
1993	791
1994	821
1995	974
1996	1,298
1997	962
1998	898
1999	1,167
2000	1,398
2001	1,345
2002	1,343
2003	1,158
2004	1,341
2005	1,152
2006	650
2007	699
2008	624
2009	727
2010	999
2011	1,023
2012	1,343
2013	1,447
2014	602
2015	622
2016	463
2017	669
2018	972
2019	574
2020	504
2021	616
2022	470
2023	681
2024	885
2025	456
2026	554

Download the Data

Data for records on 1991-05-04: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 20	776
20 to 40	45
40 to 60	23
60 to 80	10
80 to 100	3
100 to 120	8
120 to 140	2