Weather Records on 16 May 1991

1,094 weather records were set or tied worldwide on 16 May 1991. Highest significance: Aparan, AM.

Key Facts for 16 May 1991

On 16 May 1991, 1,094 weather records were set or tied at long-record stations worldwide.
535 were record highs and 239 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 37 monthly and 1,052 daily.
Aparan set a monthly record daily precipitation of 69.5 mm (2.7 in) on 16 May 1991.
Across 165 earlier years (1802 to 2026) the same calendar date averaged 434 records.

Record Map

1,094 stations

1,094 station records on 16 May 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 16 May 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Aparan	Armenia	Record daily precipitation	69.5 mm (2.7 in)	67 of 100 (Major)
Cape Moreton Lighthouse	Australia	Record daily precipitation	89.8 mm (3.5 in)	64 of 100 (Major)
Harrison	United States	Record daily precipitation	80.3 mm (3.2 in)	62 of 100 (Major)
Wheatland 4N	United States	Record daily precipitation	83.1 mm (3.3 in)	61 of 100 (Major)
Merriman	United States	Record daily precipitation	67.6 mm (2.7 in)	59 of 100 (Notable)
Newton	United States	Record daily precipitation	56.6 mm (2.2 in)	57 of 100 (Notable)
Medicine Bow	United States	Record daily precipitation	54.6 mm (2.1 in)	57 of 100 (Notable)
Breckenridge	United States	Record daily precipitation	26.7 mm (1.1 in)	56 of 100 (Notable)
Winter Park	United States	Record daily snowfall	43.2 cm (17.0 in)	56 of 100 (Notable)
Ashland	United States	Record daily precipitation	40.4 mm (1.6 in)	55 of 100 (Notable)
Amberd (Koshabulakh)	Armenia	Record daily precipitation	62.4 mm (2.5 in)	54 of 100 (Notable)
Point Lookout Bowls Club	Australia	Record daily precipitation	112.8 mm (4.4 in)	53 of 100 (Notable)
Shakhrinau	Tajikistan	Record daily precipitation	51.2 mm (2.0 in)	53 of 100 (Notable)
Iowa Hill	United States	Record daily precipitation	26.4 mm (1.0 in)	53 of 100 (Notable)
Chambers	United States	Record daily precipitation	59.2 mm (2.3 in)	50 of 100 (Notable)
Seminoe Dam	United States	Record daily precipitation	90.2 mm (3.6 in)	50 of 100 (Notable)
Breckenridge	United States	Record daily snowfall	24.1 cm (9.5 in)	49 of 100 (Notable)
Montevideo 1SW	United States	Record daily precipitation	32.0 mm (1.3 in)	49 of 100 (Notable)
Elk Mtn	United States	Record daily precipitation	61.0 mm (2.4 in)	49 of 100 (Notable)
Winter Park	United States	Record daily precipitation	51.3 mm (2.0 in)	48 of 100 (Notable)
Roscoe	United States	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Redbird	United States	Record daily precipitation	46.0 mm (1.8 in)	46 of 100 (Notable)
Ogulin	Croatia	Record daily precipitation	87.6 mm (3.4 in)	44 of 100 (Notable)
Camenca	Moldova	Record daily precipitation	33.4 mm (1.3 in)	44 of 100 (Notable)
Shovi	Georgia	Record daily precipitation	39.2 mm (1.5 in)	43 of 100 (Notable)
Chugwater	United States	Record daily precipitation	49.0 mm (1.9 in)	43 of 100 (Notable)
Climax	United States	Record daily snowfall	26.7 cm (10.5 in)	42 of 100 (Notable)
Orlando Intl AP	United States	Record daily precipitation	49.3 mm (1.9 in)	42 of 100 (Notable)
Knin	Croatia	Record daily precipitation	61.9 mm (2.4 in)	41 of 100 (Notable)
Hay Springs 12 S	United States	Record daily precipitation	50.3 mm (2.0 in)	41 of 100 (Notable)
Waterloo	United States	Record daily precipitation	54.1 mm (2.1 in)	41 of 100 (Notable)
Lexington Bluegrass AP	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Albany	United States	Record high minimum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Sioux Falls	United States	Record daily precipitation	47.0 mm (1.9 in)	40 of 100 (Notable)
Gornyij	Russia	Record daily precipitation	48.1 mm (1.9 in)	39 of 100 (Notable)
Ardmore 1 NW	United States	Record daily precipitation	49.8 mm (2.0 in)	39 of 100 (Notable)
Winner	United States	Record daily precipitation	86.9 mm (3.4 in)	39 of 100 (Notable)
Leningori	Georgia	Record daily precipitation	58.2 mm (2.3 in)	38 of 100 (Notable)
Brunswick	United States	Record high minimum temperature	22.8 C (73.0 F)	38 of 100 (Notable)
Tuscola	United States	Record high minimum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Whalen Dam (Usbr)	United States	Record daily precipitation	71.1 mm (2.8 in)	38 of 100 (Notable)
Jeanerette 5 NW	United States	Record low maximum temperature	21.7 C (71.1 F)	37 of 100 (Notable)
Rochelle 7ENE	United States	Record daily precipitation	43.2 mm (1.7 in)	37 of 100 (Notable)
Dull Ctr 1SE	United States	Record daily precipitation	31.5 mm (1.2 in)	36 of 100 (Notable)
Hampton	United States	Record high minimum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
Donaldsonville 4 SW	United States	Record low maximum temperature	22.8 C (73.0 F)	35 of 100 (Notable)
Tower 2S	United States	Record high maximum temperature	29.4 C (84.9 F)	35 of 100 (Notable)
Lima Wwtp	United States	Record high maximum temperature	32.2 C (90.0 F)	35 of 100 (Notable)
Glenrock 5 ESE	United States	Record daily precipitation	54.6 mm (2.1 in)	35 of 100 (Notable)
Ignacio Lopez Rayon	Mexico	Record low minimum temperature	17.8 C (64.0 F)	34 of 100 (Routine)
Hopkinsville	United States	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Newport 1 NW	United States	Record high minimum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Logan	United States	Record high minimum temperature	17.8 C (64.0 F)	34 of 100 (Routine)
Prairie du Sac 2 N	United States	Record high minimum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Mtn Home 1 NNW	United States	Record daily precipitation	53.3 mm (2.1 in)	33 of 100 (Routine)
Newcastle	United States	Record daily precipitation	40.1 mm (1.6 in)	33 of 100 (Routine)
Brinkley	United States	Record daily precipitation	56.1 mm (2.2 in)	32 of 100 (Routine)
Newport	United States	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Aiken 5SE	United States	Record high minimum temperature	21.7 C (71.1 F)	32 of 100 (Routine)
Waupaca	United States	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

1,094 records

Records set or tied on 16 May 1991 by type: Highest daily maximum 209, Lowest daily maximum 139, Highest daily minimum 326, Lowest daily minimum 100, Heaviest daily rainfall 295, Heaviest daily snowfall 8, Deepest snow cover 17.

Records on 16 May 1991 by type
Record type	Records
Highest daily maximum	209
Lowest daily maximum	139
Highest daily minimum	326
Lowest daily minimum	100
Heaviest daily rainfall	295
Heaviest daily snowfall	8
Deepest snow cover	17

Records on 16 May 1991 by timescale: all-time 5, monthly 37, daily 1,052.

How Much Records Were Beaten By

820 broken records

Margins by which the 820 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 280.0. Ties are not counted.

Top 20 by Significance

16 May 1991

Top 20 records on 16 May 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 May 1991	Aparan, AM	monthly rain	69.5 mm (2.7 in)	22.4 mm (0.9 in)	41 years	67 of 100 (Major)
16 May 1991	Cape Moreton Lighthouse, AU	daily rain	89.8 mm (3.5 in)	48.7 mm (1.9 in)	90 years	64 of 100 (Major)
16 May 1991	Harrison, US	daily rain	80.3 mm (3.2 in)	60.0 mm (2.4 in)	44 years	62 of 100 (Major)
16 May 1991	Wheatland 4N, US	daily rain	83.1 mm (3.3 in)	49.3 mm (1.9 in)	40 years	61 of 100 (Major)
16 May 1991	Merriman, US	daily rain	67.6 mm (2.7 in)	46.8 mm (1.8 in)	41 years	59 of 100 (Notable)
16 May 1991	Newton, US	daily rain	56.6 mm (2.2 in)	23.6 mm (0.9 in)	94 years	57 of 100 (Notable)
16 May 1991	Medicine Bow, US	monthly rain	54.6 mm (2.1 in)	21.6 mm (0.9 in)	10 years	57 of 100 (Notable)
16 May 1991	Breckenridge, US	daily rain	26.7 mm (1.1 in)	11.0 mm (0.4 in)	95 years	56 of 100 (Notable)
16 May 1991	Winter Park, US	daily snowfall	43.2 cm (17.0 in)	28.0 cm (11.0 in)	45 years	56 of 100 (Notable)
16 May 1991	Ashland, US	monthly rain	40.4 mm (1.6 in)	5.3 mm (0.21 in)	84 years	55 of 100 (Notable)
16 May 1991	Amberd (Koshabulakh), AM	all-time rain	62.4 mm (2.5 in)	12.0 mm (0.5 in)	37 years	54 of 100 (Notable)
16 May 1991	Point Lookout Bowls Club, AU	daily rain	112.8 mm (4.4 in)	95.0 mm (3.7 in)	32 years	53 of 100 (Notable)
16 May 1991	Shakhrinau, TJ	daily rain	51.2 mm (2.0 in)	37.3 mm (1.5 in)	46 years	53 of 100 (Notable)
16 May 1991	Iowa Hill, US	daily rain	26.4 mm (1.0 in)	19.3 mm (0.8 in)	92 years	53 of 100 (Notable)
16 May 1991	Chambers, US	daily rain	59.2 mm (2.3 in)	37.1 mm (1.5 in)	40 years	50 of 100 (Notable)
16 May 1991	Seminoe Dam, US	daily rain	90.2 mm (3.6 in)	67.3 mm (2.6 in)	22 years	50 of 100 (Notable)
16 May 1991	Breckenridge, US	daily snowfall	24.1 cm (9.5 in)	8.4 cm (3.3 in)	95 years	49 of 100 (Notable)
16 May 1991	Montevideo 1SW, US	daily rain	32.0 mm (1.3 in)	13.2 mm (0.5 in)	94 years	49 of 100 (Notable)
16 May 1991	Elk Mtn, US	monthly rain	61.0 mm (2.4 in)	21.6 mm (0.9 in)	9 years	49 of 100 (Notable)
16 May 1991	Winter Park, US	daily rain	51.3 mm (2.0 in)	21.3 mm (0.8 in)	37 years	48 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

1802 to 1991

Records set or tied on this calendar date in each year from 1802 to 1991. 1991 had 1,094 records.

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

Records on 05-16 in each year
Year	Records
1802	1
1806	1
1820	1
1825	1
1832	1
1837	1
1847	1
1856	1
1858	1
1861	1
1862	1
1863	1
1864	1
1866	1
1867	2
1871	1
1874	3
1878	1
1879	1
1880	1
1881	1
1882	1
1883	1
1884	1
1885	1
1886	1
1887	2
1888	2
1889	2
1890	1
1891	4
1892	3
1893	1
1894	2
1895	6
1896	2
1897	1
1898	11
1899	6
1900	7
1901	2
1902	10
1903	9
1904	17
1905	13
1906	25
1907	13
1908	6
1909	57
1910	24
1911	22
1912	13
1913	24
1914	11
1915	104
1916	38
1917	48
1918	395
1919	28
1920	69
1921	106
1922	31
1923	126
1924	152
1925	177
1926	211
1927	230
1928	121
1929	273
1930	170
1931	254
1932	441
1933	268
1934	304
1935	320
1936	520
1937	279
1938	299
1939	448
1940	334
1941	429
1942	721
1943	652
1944	531
1945	888
1946	327
1947	344
1948	281
1949	360
1950	210
1951	558
1952	773
1953	421
1954	251
1955	525
1956	697
1957	610
1958	361
1959	680
1960	370
1961	378
1962	1,295
1963	552
1964	313
1965	442
1966	420
1967	611
1968	790
1969	423
1970	520
1971	509
1972	625
1973	869
1974	1,207
1975	544
1976	518
1977	1,269
1978	808
1979	506
1980	830
1981	896
1982	427
1983	1,579
1984	981
1985	536
1986	747
1987	1,369
1988	946
1989	938
1990	1,068
1991	1,094
1992	809
1993	653
1994	705
1995	1,235
1996	1,835
1997	1,932
1998	1,500
1999	778
2000	1,129
2001	1,110
2002	694
2003	1,289
2004	869
2005	870
2006	1,345
2007	692
2008	1,034
2009	897
2010	836
2011	1,398
2012	770
2013	596
2014	1,483
2015	782
2016	793
2017	710
2018	1,013
2019	572
2020	431
2021	419
2022	717
2023	653
2024	601
2025	993
2026	558

Download the Data

Data for records on 1991-05-16: 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	809
50 to 100	9
100 to 150	1
150 to 200	0
200 to 250	0
250 to 300	1