Weather Records on 31 May 2015

704 weather records were set or tied worldwide on 31 May 2015. Highest significance: Gilman, US.

Key Facts for 31 May 2015

On 31 May 2015, 704 weather records were set or tied at long-record stations worldwide.
344 were record highs and 147 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 50 monthly and 654 daily.
Gilman set a daily record precipitation of 66.0 mm (2.6 in) on 31 May 2015.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 436 records.

Record Map

704 stations

704 station records on 31 May 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gilman	United States	Record daily precipitation	66.0 mm (2.6 in)	72 of 100 (Major)
Kokomo 5 WSW	United States	Record daily precipitation	116.1 mm (4.6 in)	71 of 100 (Major)
Rio Grande City	United States	Record daily precipitation	101.6 mm (4.0 in)	71 of 100 (Major)
Northfield	United States	Record daily precipitation	45.2 mm (1.8 in)	70 of 100 (Major)
Norwalk Wwtp	United States	Record daily precipitation	52.1 mm (2.1 in)	68 of 100 (Major)
Hemlock	United States	Record daily precipitation	57.2 mm (2.3 in)	63 of 100 (Major)
Brockport	United States	Record daily precipitation	50.5 mm (2.0 in)	59 of 100 (Notable)
Three Rivers	United States	Record daily precipitation	96.0 mm (3.8 in)	55 of 100 (Notable)
Linesville 1 S	United States	Record daily precipitation	85.6 mm (3.4 in)	54 of 100 (Notable)
Gila Hot Springs	United States	Record daily precipitation	28.2 mm (1.1 in)	53 of 100 (Notable)
Buffalo	United States	Record daily precipitation	62.0 mm (2.4 in)	52 of 100 (Notable)
Effingham 3SW	United States	Record daily precipitation	99.8 mm (3.9 in)	51 of 100 (Notable)
Krasnodar	Russia	Record daily precipitation	50.1 mm (2.0 in)	50 of 100 (Notable)
Farmland 5 NNW	United States	Record daily precipitation	64.0 mm (2.5 in)	49 of 100 (Notable)
McGill	United States	Record high minimum temperature	15.0 C (59.0 F)	49 of 100 (Notable)
Pogranichnoe	Russia	Record daily precipitation	28.3 mm (1.1 in)	48 of 100 (Notable)
Warruwi	Australia	Record daily precipitation	93.6 mm (3.7 in)	47 of 100 (Notable)
Kokomo 3 WSW	United States	Record daily precipitation	133.1 mm (5.2 in)	47 of 100 (Notable)
Sodus 1W	United States	Record daily precipitation	39.1 mm (1.5 in)	47 of 100 (Notable)
Newark Liberty Intl AP	United States	Record daily precipitation	94.7 mm (3.7 in)	47 of 100 (Notable)
Troicko-Pecherskoe	Russia	Record daily precipitation	39.5 mm (1.6 in)	46 of 100 (Notable)
Ft Valley	United States	Record high minimum temperature	9.4 C (48.9 F)	46 of 100 (Notable)
Rochester Gtr Intl	United States	Record daily precipitation	41.7 mm (1.6 in)	46 of 100 (Notable)
Oberlin	United States	Record daily precipitation	56.4 mm (2.2 in)	45 of 100 (Notable)
Cacapon St Pk #2	United States	Record daily precipitation	50.8 mm (2.0 in)	45 of 100 (Notable)
Geneva Rsch Farm	United States	Record daily precipitation	40.1 mm (1.6 in)	44 of 100 (Notable)
Portageville 1N	United States	Record daily precipitation	46.2 mm (1.8 in)	44 of 100 (Notable)
Osage City	United States	Record low maximum temperature	15.0 C (59.0 F)	43 of 100 (Notable)
Tallulah	United States	Record daily precipitation	80.0 mm (3.1 in)	43 of 100 (Notable)
Champaign 3S	United States	Record daily precipitation	71.6 mm (2.8 in)	42 of 100 (Notable)
Lebanon 2W	United States	Record low maximum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Warsaw 6 SW	United States	Record daily precipitation	47.5 mm (1.9 in)	42 of 100 (Notable)
Philo	United States	Record daily precipitation	39.6 mm (1.6 in)	41 of 100 (Notable)
Garnett 1 E	United States	Record low maximum temperature	15.6 C (60.1 F)	41 of 100 (Notable)
Mt Morris 2W	United States	Record daily precipitation	35.3 mm (1.4 in)	41 of 100 (Notable)
Selinsgrove 2 S	United States	Record high minimum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Racine Wwtp	United States	Record low maximum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Dos Bocas	Puerto Rico [United States]	Record daily precipitation	77.5 mm (3.1 in)	40 of 100 (Notable)
Mombasa	Kenya	Record daily precipitation	106.9 mm (4.2 in)	39 of 100 (Notable)
Allison	United States	Record low maximum temperature	15.6 C (60.1 F)	39 of 100 (Notable)
Zumbrota	United States	Record low maximum temperature	15.6 C (60.1 F)	39 of 100 (Notable)
Hooker 12 NNW	United States	Record daily precipitation	37.8 mm (1.5 in)	39 of 100 (Notable)
Wood	United States	Record low minimum temperature	0.6 C (33.1 F)	39 of 100 (Notable)
Colville	United States	Record high minimum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Brownsville	United States	Record daily precipitation	88.9 mm (3.5 in)	39 of 100 (Notable)
Peru	United States	Record daily precipitation	38.6 mm (1.5 in)	38 of 100 (Notable)
Yellowtail Dam	United States	Record daily precipitation	28.2 mm (1.1 in)	38 of 100 (Notable)
Dannemora	United States	Record daily precipitation	43.2 mm (1.7 in)	38 of 100 (Notable)
Cle Elum	United States	Record high minimum temperature	13.3 C (55.9 F)	38 of 100 (Notable)
Poronajsk	Russia	Record high minimum temperature	10.4 C (50.7 F)	37 of 100 (Notable)
Miami	United States	Record low maximum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
Indian Lake 2SW	United States	Record daily precipitation	41.4 mm (1.6 in)	36 of 100 (Notable)
Mombetsu	Japan	Record high minimum temperature	14.9 C (58.8 F)	35 of 100 (Notable)
Cherdyn'	Russia	Record high minimum temperature	17.8 C (64.0 F)	35 of 100 (Notable)
Budennovsk	Russia	Record daily precipitation	35.0 mm (1.4 in)	35 of 100 (Notable)
Dearborn	United States	Record daily precipitation	53.6 mm (2.1 in)	35 of 100 (Notable)
N Tonawanda	United States	Record daily precipitation	63.2 mm (2.5 in)	35 of 100 (Notable)
Kotzebue AP	United States	Record high minimum temperature	7.8 C (46.0 F)	35 of 100 (Notable)
Buzaubaj	Uzbekistan	Record high minimum temperature	26.6 C (79.9 F)	35 of 100 (Notable)
Frolovo	Russia	Record daily precipitation	26.5 mm (1.0 in)	34 of 100 (Routine)

Counts by Type and Timescale

704 records

Records set or tied on 31 May 2015 by type: Highest daily maximum 144, Lowest daily maximum 89, Highest daily minimum 200, Lowest daily minimum 58, Heaviest daily rainfall 210, Deepest snow cover 3.

Records on 31 May 2015 by type
Record type	Records
Highest daily maximum	144
Lowest daily maximum	89
Highest daily minimum	200
Lowest daily minimum	58
Heaviest daily rainfall	210
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 31 May 2015 by timescale: all-time 0, monthly 50, daily 654.

How Much Records Were Beaten By

591 broken records

Margins by which the 591 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 340.0. Ties are not counted.

Top 20 by Significance

31 May 2015

Top 20 records on 31 May 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 2015	Gilman, US	daily rain	66.0 mm (2.6 in)	48.2 mm (1.9 in)	80 years	72 of 100 (Major)
31 May 2015	Kokomo 5 WSW, US	monthly rain	116.1 mm (4.6 in)	60.2 mm (2.4 in)	50 years	71 of 100 (Major)
31 May 2015	Rio Grande City, US	daily rain	101.6 mm (4.0 in)	61.0 mm (2.4 in)	100 years	71 of 100 (Major)
31 May 2015	Northfield, US	daily rain	45.2 mm (1.8 in)	26.1 mm (1.0 in)	104 years	70 of 100 (Major)
31 May 2015	Norwalk Wwtp, US	daily rain	52.1 mm (2.1 in)	24.2 mm (1.0 in)	110 years	68 of 100 (Major)
31 May 2015	Hemlock, US	daily rain	57.2 mm (2.3 in)	31.0 mm (1.2 in)	58 years	63 of 100 (Major)
31 May 2015	Brockport, US	daily rain	50.5 mm (2.0 in)	25.4 mm (1.0 in)	58 years	59 of 100 (Notable)
31 May 2015	Three Rivers, US	monthly rain	96.0 mm (3.8 in)	11.2 mm (0.4 in)	80 years	55 of 100 (Notable)
31 May 2015	Linesville 1 S, US	monthly rain	85.6 mm (3.4 in)	7.4 mm (0.29 in)	91 years	54 of 100 (Notable)
31 May 2015	Gila Hot Springs, US	daily rain	28.2 mm (1.1 in)	24.9 mm (1.0 in)	29 years	53 of 100 (Notable)
31 May 2015	Buffalo, US	daily rain	62.0 mm (2.4 in)	32.3 mm (1.3 in)	16 years	52 of 100 (Notable)
31 May 2015	Effingham 3SW, US	daily rain	99.8 mm (3.9 in)	36.6 mm (1.4 in)	40 years	51 of 100 (Notable)
31 May 2015	Krasnodar, RU	daily rain	50.1 mm (2.0 in)	33.1 mm (1.3 in)	17 years	50 of 100 (Notable)
31 May 2015	Farmland 5 NNW, US	daily rain	64.0 mm (2.5 in)	27.7 mm (1.1 in)	38 years	49 of 100 (Notable)
31 May 2015	McGill, US	daily high min	15.0 C (59.0 F)	3.9 C (7.0 F)	100 years	49 of 100 (Notable)
31 May 2015	Pogranichnoe, RU	daily rain	28.3 mm (1.1 in)	19.0 mm (0.7 in)	49 years	48 of 100 (Notable)
31 May 2015	Warruwi, AU	monthly rain	93.6 mm (3.7 in)	17.6 mm (0.7 in)	32 years	47 of 100 (Notable)
31 May 2015	Kokomo 3 WSW, US	monthly rain	133.1 mm (5.2 in)	7.4 mm (0.29 in)	72 years	47 of 100 (Notable)
31 May 2015	Sodus 1W, US	daily rain	39.1 mm (1.5 in)	17.5 mm (0.7 in)	54 years	47 of 100 (Notable)
31 May 2015	Newark Liberty Intl AP, US	daily rain	94.7 mm (3.7 in)	19.0 mm (0.7 in)	74 years	47 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

1811 to 2015

Records set or tied on this calendar date in each year from 1811 to 2015. 2015 had 704 records.

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

Records on 05-31 in each year
Year	Records
1811	1
1818	3
1827	1
1836	2
1845	1
1847	1
1853	2
1855	2
1858	1
1864	2
1865	1
1866	1
1867	1
1868	4
1869	1
1871	2
1873	3
1874	1
1877	1
1878	2
1879	2
1880	3
1882	1
1883	1
1885	1
1888	1
1889	2
1890	1
1892	1
1893	4
1894	2
1895	8
1897	5
1898	7
1899	1
1900	2
1901	9
1902	9
1903	17
1904	19
1905	7
1906	11
1907	20
1908	12
1909	8
1910	26
1911	20
1912	15
1913	83
1914	20
1915	23
1916	23
1917	13
1918	20
1919	44
1920	46
1921	157
1922	49
1923	98
1924	152
1925	226
1926	228
1927	121
1928	67
1929	246
1930	612
1931	223
1932	181
1933	397
1934	782
1935	156
1936	559
1937	462
1938	424
1939	461
1940	383
1941	410
1942	364
1943	552
1944	372
1945	457
1946	380
1947	439
1948	295
1949	303
1950	467
1951	640
1952	374
1953	654
1954	445
1955	534
1956	632
1957	304
1958	429
1959	459
1960	247
1961	472
1962	565
1963	354
1964	1,237
1965	494
1966	601
1967	987
1968	276
1969	555
1970	573
1971	714
1972	1,127
1973	418
1974	473
1975	797
1976	435
1977	605
1978	873
1979	915
1980	517
1981	775
1982	817
1983	1,494
1984	2,047
1985	790
1986	1,365
1987	822
1988	1,255
1989	912
1990	900
1991	1,381
1992	1,031
1993	982
1994	776
1995	693
1996	946
1997	1,163
1998	1,215
1999	790
2000	1,172
2001	1,047
2002	1,162
2003	831
2004	1,071
2005	724
2006	1,045
2007	793
2008	809
2009	570
2010	741
2011	1,498
2012	764
2013	1,100
2014	565
2015	704
2016	402
2017	440
2018	1,211
2019	420
2020	673
2021	834
2022	902
2023	454
2024	809
2025	1,204
2026	536

Download the Data

Data for records on 2015-05-31: 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	586
50 to 100	2
100 to 150	0
150 to 200	0
200 to 250	1
250 to 300	0
300 to 350	2