Weather Records on 25 August 1999

895 weather records were set or tied worldwide on 25 August 1999. Highest significance: Mendooran Post Office, AU.

Key Facts for 25 August 1999

On 25 August 1999, 895 weather records were set or tied at long-record stations worldwide.
494 were record highs and 146 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 32 monthly and 856 daily.
Mendooran Post Office set a daily record precipitation of 42.0 mm (1.7 in) on 25 August 1999.
Across 168 earlier years (1796 to 2026) the same calendar date averaged 435 records.

Record Map

895 stations

895 station records on 25 August 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 August 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mendooran Post Office	Australia	Record daily precipitation	42.0 mm (1.7 in)	58 of 100 (Notable)
Eagle Pass 3N	United States	Record daily precipitation	67.3 mm (2.6 in)	58 of 100 (Notable)
Athens Ou	United States	Record daily precipitation	73.4 mm (2.9 in)	57 of 100 (Notable)
Luxembourg Airport	Luxembourg	Record daily precipitation	35.6 mm (1.4 in)	55 of 100 (Notable)
Sarapul	Russia	Record daily precipitation	36.3 mm (1.4 in)	54 of 100 (Notable)
Beverly Stp	United States	Record daily precipitation	44.5 mm (1.8 in)	54 of 100 (Notable)
Hogsett Rc Byrd Dam	United States	Record daily precipitation	79.0 mm (3.1 in)	54 of 100 (Notable)
Actopan	Mexico	Record daily precipitation	62.0 mm (2.4 in)	53 of 100 (Notable)
Gallipolis	United States	Record daily precipitation	85.1 mm (3.4 in)	53 of 100 (Notable)
Mayaguez City	Puerto Rico [United States]	Record high minimum temperature	25.0 C (77.0 F)	51 of 100 (Notable)
Hernando	United States	Record daily precipitation	56.9 mm (2.2 in)	51 of 100 (Notable)
Cooperdale	United States	Record daily precipitation	90.4 mm (3.6 in)	51 of 100 (Notable)
Mc Connellsville Lk 7	United States	Record daily precipitation	70.1 mm (2.8 in)	51 of 100 (Notable)
Seymour 1 WSW	United States	Record daily precipitation	69.1 mm (2.7 in)	50 of 100 (Notable)
Branchland 1 N	United States	Record daily precipitation	90.4 mm (3.6 in)	50 of 100 (Notable)
Coahuayutla	Mexico	Record daily precipitation	71.9 mm (2.8 in)	49 of 100 (Notable)
Ripley	United States	Record daily precipitation	74.9 mm (2.9 in)	49 of 100 (Notable)
Colville	United States	Record high minimum temperature	17.2 C (63.0 F)	48 of 100 (Notable)
Washington Dulles Intl AP	United States	Record daily precipitation	77.0 mm (3.0 in)	48 of 100 (Notable)
Waverly	United States	Record daily precipitation	57.9 mm (2.3 in)	47 of 100 (Notable)
Cordele	United States	Record daily precipitation	44.7 mm (1.8 in)	46 of 100 (Notable)
Maysville Wwtp	United States	Record daily precipitation	53.8 mm (2.1 in)	46 of 100 (Notable)
Cambridge	United States	Record daily precipitation	81.5 mm (3.2 in)	46 of 100 (Notable)
Yelabuga	Russia	Record daily precipitation	34.8 mm (1.4 in)	45 of 100 (Notable)
Kushnarenkovo	Russia	Record daily precipitation	41.1 mm (1.6 in)	45 of 100 (Notable)
Newark Wtr Wks	United States	Record daily precipitation	58.4 mm (2.3 in)	45 of 100 (Notable)
Cape Otway Lighthouse	Australia	Record high minimum temperature	13.0 C (55.4 F)	44 of 100 (Notable)
Strelka Chunja	Russia	Record daily precipitation	27.4 mm (1.1 in)	44 of 100 (Notable)
Centerburg 2 SE	United States	Record daily precipitation	59.7 mm (2.4 in)	44 of 100 (Notable)
T Uleniy-Ostrov	Russia	Record daily precipitation	67.1 mm (2.6 in)	43 of 100 (Notable)
Vaiden 1 SSW	United States	Record daily precipitation	69.9 mm (2.8 in)	43 of 100 (Notable)
Saint Ignatius	United States	Record high minimum temperature	17.8 C (64.0 F)	43 of 100 (Notable)
Monterey	United States	Record daily precipitation	75.9 mm (3.0 in)	43 of 100 (Notable)
Washington Court House	United States	Record daily precipitation	43.7 mm (1.7 in)	42 of 100 (Notable)
Langtry	United States	Record low maximum temperature	28.3 C (82.9 F)	42 of 100 (Notable)
Goldendale	United States	Record high minimum temperature	16.7 C (62.1 F)	42 of 100 (Notable)
Alger-Dar El Beida	Algeria	Record high maximum temperature	45.6 C (114.1 F)	41 of 100 (Notable)
Melbourne Regional Office	Australia	Record high minimum temperature	13.8 C (56.8 F)	41 of 100 (Notable)
Chilapa (Smn)	Mexico	Record daily precipitation	95.0 mm (3.7 in)	41 of 100 (Notable)
Mechanicsville 5 NE	United States	Record daily precipitation	102.6 mm (4.0 in)	41 of 100 (Notable)
State UNIV	United States	Record low maximum temperature	27.2 C (81.0 F)	41 of 100 (Notable)
Roseville	United States	Record daily precipitation	80.0 mm (3.1 in)	41 of 100 (Notable)
Winfield Locks	United States	Record daily precipitation	76.7 mm (3.0 in)	41 of 100 (Notable)
Nicosia	Cyprus	Record high minimum temperature	24.1 C (75.4 F)	40 of 100 (Notable)
Everett	United States	Record high minimum temperature	16.7 C (62.1 F)	40 of 100 (Notable)
Beckley Raleigh Co AP	United States	Record daily precipitation	40.4 mm (1.6 in)	40 of 100 (Notable)
Elberton 2 N	United States	Record low maximum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Belleville L&D	United States	Record daily precipitation	62.5 mm (2.5 in)	39 of 100 (Notable)
Jackson 3 NW	United States	Record daily precipitation	82.6 mm (3.3 in)	39 of 100 (Notable)
Republic	United States	Record high minimum temperature	13.9 C (57.0 F)	39 of 100 (Notable)
Kokpekty	Kazakhstan	Record high minimum temperature	16.8 C (62.2 F)	38 of 100 (Notable)
Calhoun City	United States	Record daily precipitation	50.8 mm (2.0 in)	38 of 100 (Notable)
Crossville Ed & Rsch STN	United States	Record daily precipitation	65.8 mm (2.6 in)	38 of 100 (Notable)
Martinsville Fltr Plt	United States	Record daily precipitation	61.2 mm (2.4 in)	38 of 100 (Notable)
Presa la Esperanza	Mexico	Record daily precipitation	38.6 mm (1.5 in)	37 of 100 (Notable)
Mc Cool Junction	United States	Record daily precipitation	82.6 mm (3.3 in)	37 of 100 (Notable)
Cleveland Fltr Plt	United States	Record daily precipitation	40.6 mm (1.6 in)	37 of 100 (Notable)
Los Hules	Mexico	Record daily precipitation	113.3 mm (4.5 in)	36 of 100 (Notable)
Warren	United States	Record high minimum temperature	12.2 C (54.0 F)	36 of 100 (Notable)
Hillsboro	United States	Record daily precipitation	55.1 mm (2.2 in)	36 of 100 (Notable)

Counts by Type and Timescale

895 records

Records set or tied on 25 August 1999 by type: Highest daily maximum 145, Lowest daily maximum 76, Highest daily minimum 349, Lowest daily minimum 70, Heaviest daily rainfall 255.

Records on 25 August 1999 by type
Record type	Records
Highest daily maximum	145
Lowest daily maximum	76
Highest daily minimum	349
Lowest daily minimum	70
Heaviest daily rainfall	255
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 25 August 1999 by timescale: all-time 7, monthly 32, daily 856.

How Much Records Were Beaten By

646 broken records

Margins by which the 646 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 68.6. Ties are not counted.

Top 20 by Significance

25 August 1999

Top 20 records on 25 August 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 August 1999	Mendooran Post Office, AU	daily rain	42.0 mm (1.7 in)	19.1 mm (0.8 in)	78 years	58 of 100 (Notable)
25 August 1999	Eagle Pass 3N, US	daily rain	67.3 mm (2.6 in)	44.4 mm (1.7 in)	89 years	58 of 100 (Notable)
25 August 1999	Athens Ou, US	daily rain	73.4 mm (2.9 in)	47.2 mm (1.9 in)	40 years	57 of 100 (Notable)
25 August 1999	Luxembourg Airport, LU	daily rain	35.6 mm (1.4 in)	25.8 mm (1.0 in)	40 years	55 of 100 (Notable)
25 August 1999	Sarapul, RU	daily rain	36.3 mm (1.4 in)	22.6 mm (0.9 in)	48 years	54 of 100 (Notable)
25 August 1999	Beverly Stp, US	daily rain	44.5 mm (1.8 in)	24.9 mm (1.0 in)	84 years	54 of 100 (Notable)
25 August 1999	Hogsett Rc Byrd Dam, US	daily rain	79.0 mm (3.1 in)	28.2 mm (1.1 in)	74 years	54 of 100 (Notable)
25 August 1999	Actopan, MX	daily rain	62.0 mm (2.4 in)	54.1 mm (2.1 in)	32 years	53 of 100 (Notable)
25 August 1999	Gallipolis, US	daily rain	85.1 mm (3.4 in)	63.5 mm (2.5 in)	20 years	53 of 100 (Notable)
25 August 1999	Mayaguez City, PR	daily high min	25.0 C (77.0 F)	1.7 C (3.1 F)	98 years	51 of 100 (Notable)
25 August 1999	Hernando, US	daily rain	56.9 mm (2.2 in)	35.3 mm (1.4 in)	64 years	51 of 100 (Notable)
25 August 1999	Cooperdale, US	daily rain	90.4 mm (3.6 in)	68.6 mm (2.7 in)	20 years	51 of 100 (Notable)
25 August 1999	Mc Connellsville Lk 7, US	daily rain	70.1 mm (2.8 in)	36.6 mm (1.4 in)	40 years	51 of 100 (Notable)
25 August 1999	Seymour 1 WSW, US	daily rain	69.1 mm (2.7 in)	52.1 mm (2.1 in)	5 years	50 of 100 (Notable)
25 August 1999	Branchland 1 N, US	daily rain	90.4 mm (3.6 in)	55.6 mm (2.2 in)	13 years	50 of 100 (Notable)
25 August 1999	Coahuayutla, MX	daily rain	71.9 mm (2.8 in)	52.1 mm (2.1 in)	36 years	49 of 100 (Notable)
25 August 1999	Ripley, US	daily rain	74.9 mm (2.9 in)	59.9 mm (2.4 in)	13 years	49 of 100 (Notable)
25 August 1999	Colville, US	daily high min	17.2 C (63.0 F)	3.9 C (7.0 F)	92 years	48 of 100 (Notable)
25 August 1999	Washington Dulles Intl AP, US	daily rain	77.0 mm (3.0 in)	64.8 mm (2.6 in)	13 years	48 of 100 (Notable)
25 August 1999	Waverly, US	daily rain	57.9 mm (2.3 in)	19.8 mm (0.8 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

1796 to 1999

Records set or tied on this calendar date in each year from 1796 to 1999. 1999 had 895 records.

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

Records on 08-25 in each year
Year	Records
1796	1
1801	1
1802	1
1807	2
1809	1
1813	1
1814	1
1816	1
1818	2
1837	1
1838	2
1839	1
1848	1
1852	1
1855	2
1859	1
1861	2
1864	1
1867	2
1869	1
1870	1
1871	2
1872	2
1875	1
1876	5
1877	3
1879	3
1880	2
1884	1
1885	2
1886	1
1887	1
1889	1
1890	3
1892	4
1893	8
1894	2
1895	4
1896	2
1897	2
1898	2
1899	5
1900	13
1901	11
1902	6
1903	13
1904	11
1905	12
1906	29
1907	15
1908	13
1909	22
1910	32
1911	32
1912	32
1913	31
1914	30
1915	94
1916	18
1917	65
1918	37
1919	172
1920	174
1921	50
1922	70
1923	117
1924	402
1925	145
1926	224
1927	356
1928	167
1929	174
1930	247
1931	251
1932	270
1933	307
1934	457
1935	317
1936	859
1937	333
1938	620
1939	366
1940	658
1941	474
1942	514
1943	496
1944	589
1945	462
1946	305
1947	627
1948	876
1949	281
1950	327
1951	352
1952	585
1953	461
1954	520
1955	711
1956	273
1957	479
1958	958
1959	576
1960	585
1961	487
1962	398
1963	510
1964	557
1965	401
1966	715
1967	439
1968	596
1969	631
1970	721
1971	628
1972	596
1973	537
1974	466
1975	650
1976	459
1977	731
1978	702
1979	828
1980	750
1981	671
1982	907
1983	1,277
1984	694
1985	1,048
1986	778
1987	1,533
1988	815
1989	918
1990	817
1991	688
1992	1,680
1993	1,137
1994	617
1995	1,206
1996	1,058
1997	1,553
1998	1,138
1999	895
2000	790
2001	1,021
2002	1,073
2003	872
2004	947
2005	874
2006	1,020
2007	1,345
2008	1,026
2009	824
2010	1,321
2011	1,332
2012	709
2013	619
2014	853
2015	1,157
2016	887
2017	432
2018	438
2019	708
2020	931
2021	597
2022	672
2023	1,565
2024	909
2025	1,071
2026	886

Download the Data

Data for records on 1999-08-25: 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 10	540
10 to 20	49
20 to 30	28
30 to 40	12
40 to 50	6
50 to 60	6
60 to 70	5