Weather Records on 31 May 1999

790 weather records were set or tied worldwide on 31 May 1999. Highest significance: Sar'ja, RU.

Key Facts for 31 May 1999

On 31 May 1999, 790 weather records were set or tied at long-record stations worldwide.
470 were record highs and 125 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 39 monthly and 750 daily.
Sar'ja set a daily record precipitation of 30.0 mm (1.2 in) on 31 May 1999.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 435 records.

Record Map

790 stations

790 station records on 31 May 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sar'ja	Russia	Record daily precipitation	30.0 mm (1.2 in)	60 of 100 (Major)
Grace	United States	Record daily precipitation	33.5 mm (1.3 in)	60 of 100 (Major)
Grant City	United States	Record daily precipitation	91.4 mm (3.6 in)	59 of 100 (Notable)
Munchen-Nymphenburg	Germany	Record high minimum temperature	17.8 C (64.0 F)	53 of 100 (Notable)
Reston	United States	Record daily precipitation	62.0 mm (2.4 in)	51 of 100 (Notable)
Clifton	United States	Record daily precipitation	68.1 mm (2.7 in)	50 of 100 (Notable)
Wappapello Dam	United States	Record daily precipitation	62.7 mm (2.5 in)	48 of 100 (Notable)
Shenandoah	United States	Record daily precipitation	59.4 mm (2.3 in)	47 of 100 (Notable)
Malden Muni AP	United States	Record daily precipitation	68.6 mm (2.7 in)	47 of 100 (Notable)
Lafayette Rgnl AP	United States	Record daily precipitation	126.7 mm (5.0 in)	47 of 100 (Notable)
Hart 3 WSW	United States	Record daily precipitation	43.7 mm (1.7 in)	46 of 100 (Notable)
Freiburg	Germany	Record high minimum temperature	18.6 C (65.5 F)	45 of 100 (Notable)
Kremsmuenster	Austria	Record high minimum temperature	17.4 C (63.3 F)	43 of 100 (Notable)
Yushu	China	Record daily precipitation	27.2 mm (1.1 in)	43 of 100 (Notable)
Ust-Umalta	Russia	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)
Augusta	United States	Record daily precipitation	30.7 mm (1.2 in)	43 of 100 (Notable)
Chengde	China	Record daily precipitation	45.3 mm (1.8 in)	42 of 100 (Notable)
Gospic	Croatia	Record high maximum temperature	29.0 C (84.2 F)	40 of 100 (Notable)
Col du Grand St-Bernard	Switzerland	Record high minimum temperature	7.0 C (44.6 F)	40 of 100 (Notable)
Farmland 5 NNW	United States	Record high maximum temperature	34.4 C (93.9 F)	40 of 100 (Notable)
Sidney 1SSE	United States	Record daily precipitation	35.6 mm (1.4 in)	40 of 100 (Notable)
Dubois	United States	Record daily precipitation	34.8 mm (1.4 in)	40 of 100 (Notable)
Zagreb-Gric	Croatia	Record high maximum temperature	31.5 C (88.7 F)	38 of 100 (Notable)
Holton	United States	Record daily precipitation	34.5 mm (1.4 in)	38 of 100 (Notable)
Ashton 1N	United States	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Ljubljana Bezigrad	Slovenia	Record high maximum temperature	32.4 C (90.3 F)	36 of 100 (Notable)
Waterloo 2 NW	United States	Record daily precipitation	46.2 mm (1.8 in)	36 of 100 (Notable)
Sheffield	United States	Record daily precipitation	46.5 mm (1.8 in)	36 of 100 (Notable)
Snake Rvr	United States	Record daily precipitation	33.5 mm (1.3 in)	36 of 100 (Notable)
Augusta	United States	Record daily precipitation	50.8 mm (2.0 in)	35 of 100 (Notable)
Richmond Post Office	Australia	Record high maximum temperature	33.9 C (93.0 F)	34 of 100 (Routine)
Tonala (Dge)	Mexico	Record high minimum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Solekul	Russia	Record daily precipitation	25.3 mm (1.0 in)	34 of 100 (Routine)
Valentine	United States	Record low maximum temperature	12.2 C (54.0 F)	34 of 100 (Routine)
Bosque del Apache	United States	Record high minimum temperature	20.6 C (69.1 F)	34 of 100 (Routine)
Graz	Austria	Record high minimum temperature	17.9 C (64.2 F)	33 of 100 (Routine)
Marion	United States	Record low minimum temperature	3.3 C (37.9 F)	33 of 100 (Routine)
Yekimtsevo (Kologriv)	Russia	Record daily precipitation	26.3 mm (1.0 in)	32 of 100 (Routine)
Monticello (River)	United States	Record daily precipitation	67.1 mm (2.6 in)	32 of 100 (Routine)
Lamoni	United States	Record daily precipitation	53.6 mm (2.1 in)	32 of 100 (Routine)
Eastland	United States	Record high minimum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Songpan	China	Record daily precipitation	28.8 mm (1.1 in)	31 of 100 (Routine)
Chichijima	Japan	Record daily precipitation	85.0 mm (3.3 in)	31 of 100 (Routine)
Oujda	Morocco	Record high maximum temperature	34.6 C (94.3 F)	31 of 100 (Routine)
Bruning	United States	Record daily precipitation	64.0 mm (2.5 in)	31 of 100 (Routine)
Plainfield	United States	Record high maximum temperature	37.2 C (99.0 F)	31 of 100 (Routine)
Dengqen	China	Record high minimum temperature	10.4 C (50.7 F)	30 of 100 (Routine)
El Burrero	Mexico	Record high maximum temperature	35.6 C (96.1 F)	30 of 100 (Routine)
Hawarden	United States	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Sedgwick	United States	Record daily precipitation	35.6 mm (1.4 in)	30 of 100 (Routine)
Mead 6S	United States	Record daily precipitation	41.9 mm (1.6 in)	30 of 100 (Routine)
Table Rock 4N	United States	Record daily precipitation	44.2 mm (1.7 in)	30 of 100 (Routine)
Lovell	United States	Record low maximum temperature	10.0 C (50.0 F)	30 of 100 (Routine)
Kr. Ostalb Gschwend	Germany	Record high minimum temperature	16.1 C (61.0 F)	29 of 100 (Routine)
Basel Binningen	Switzerland	Record high minimum temperature	17.1 C (62.8 F)	29 of 100 (Routine)
Bernie	United States	Record daily precipitation	30.5 mm (1.2 in)	29 of 100 (Routine)
Burbank	United States	Record daily precipitation	53.8 mm (2.1 in)	29 of 100 (Routine)
Yellowstone Park Mammoth	United States	Record low maximum temperature	4.4 C (39.9 F)	29 of 100 (Routine)
Bartlesville Muni AP	United States	Record daily precipitation	33.0 mm (1.3 in)	29 of 100 (Routine)
Bely Island	Russia	Record low minimum temperature	-19.0 C (-2.2 F)	28 of 100 (Routine)

Counts by Type and Timescale

790 records

Records set or tied on 31 May 1999 by type: Highest daily maximum 212, Lowest daily maximum 68, Highest daily minimum 258, Lowest daily minimum 57, Heaviest daily rainfall 192, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 31 May 1999 by type
Record type	Records
Highest daily maximum	212
Lowest daily maximum	68
Highest daily minimum	258
Lowest daily minimum	57
Heaviest daily rainfall	192
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 31 May 1999 by timescale: all-time 1, monthly 39, daily 750.

How Much Records Were Beaten By

634 broken records

Margins by which the 634 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 559.0. Ties are not counted.

Top 20 by Significance

31 May 1999

Top 20 records on 31 May 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1999	Sar'ja, RU	daily rain	30.0 mm (1.2 in)	22.2 mm (0.9 in)	48 years	60 of 100 (Major)
31 May 1999	Grace, US	daily rain	33.5 mm (1.3 in)	18.0 mm (0.7 in)	56 years	60 of 100 (Major)
31 May 1999	Grant City, US	daily rain	91.4 mm (3.6 in)	48.5 mm (1.9 in)	40 years	59 of 100 (Notable)
31 May 1999	Munchen-Nymphenburg, DE	monthly high min	17.8 C (64.0 F)	1.1 C (2.0 F)	107 years	53 of 100 (Notable)
31 May 1999	Reston, US	monthly rain	62.0 mm (2.4 in)	14.0 mm (0.6 in)	39 years	51 of 100 (Notable)
31 May 1999	Clifton, US	daily rain	68.1 mm (2.7 in)	39.1 mm (1.5 in)	56 years	50 of 100 (Notable)
31 May 1999	Wappapello Dam, US	daily rain	62.7 mm (2.5 in)	45.7 mm (1.8 in)	52 years	48 of 100 (Notable)
31 May 1999	Shenandoah, US	daily rain	59.4 mm (2.3 in)	25.6 mm (1.0 in)	64 years	47 of 100 (Notable)
31 May 1999	Malden Muni AP, US	daily rain	68.6 mm (2.7 in)	58.2 mm (2.3 in)	24 years	47 of 100 (Notable)
31 May 1999	Lafayette Rgnl AP, US	daily rain	126.7 mm (5.0 in)	59.6 mm (2.3 in)	36 years	47 of 100 (Notable)
31 May 1999	Hart 3 WSW, US	daily rain	43.7 mm (1.7 in)	23.4 mm (0.9 in)	40 years	46 of 100 (Notable)
31 May 1999	Freiburg, DE	daily high min	18.6 C (65.5 F)	2.3 C (4.1 F)	97 years	45 of 100 (Notable)
31 May 1999	Kremsmuenster, AT	daily high min	17.4 C (63.3 F)	1.0 C (1.8 F)	112 years	43 of 100 (Notable)
31 May 1999	Yushu, CN	daily rain	27.2 mm (1.1 in)	11.7 mm (0.5 in)	36 years	43 of 100 (Notable)
31 May 1999	Ust-Umalta, RU	daily rain	33.0 mm (1.3 in)	13.8 mm (0.5 in)	52 years	43 of 100 (Notable)
31 May 1999	Augusta, US	daily rain	30.7 mm (1.2 in)	5.3 mm (0.21 in)	90 years	43 of 100 (Notable)
31 May 1999	Chengde, CN	daily rain	45.3 mm (1.8 in)	23.8 mm (0.9 in)	36 years	42 of 100 (Notable)
31 May 1999	Gospic, HR	daily high max	29.0 C (84.2 F)	1.5 C (2.7 F)	90 years	40 of 100 (Notable)
31 May 1999	Col du Grand St-Bernard, CH	daily high min	7.0 C (44.6 F)	0.3 C (0.5 F)	133 years	40 of 100 (Notable)
31 May 1999	Farmland 5 NNW, US	daily high max	34.4 C (93.9 F)	0.5 C (0.9 F)	103 years	40 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 1999

Records set or tied on this calendar date in each year from 1811 to 1999. 1999 had 790 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 1999-05-31: 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 100	633
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	1