Weather Records on 30 April 1999

1,012 weather records were set or tied worldwide on 30 April 1999. Highest significance: Springer, US.

Key Facts for 30 April 1999

On 30 April 1999, 1,012 weather records were set or tied at long-record stations worldwide.
215 were record highs and 525 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 70 monthly and 938 daily.
Springer set a monthly record daily precipitation of 91.9 mm (3.6 in) on 30 April 1999.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 443 records.

Record Map

1,012 stations

1,012 station records on 30 April 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 April 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Springer	United States	Record daily precipitation	91.9 mm (3.6 in)	88 of 100 (Exceptional)
Cimarron 4 SW	United States	Record daily precipitation	98.8 mm (3.9 in)	84 of 100 (Exceptional)
Newkirk	United States	Record daily precipitation	108.7 mm (4.3 in)	74 of 100 (Major)
Red Rvr	United States	Record daily precipitation	57.9 mm (2.3 in)	66 of 100 (Major)
Blowing Rock 1NW	United States	Record daily snowfall	10.2 cm (4.0 in)	66 of 100 (Major)
Climax	United States	Record daily snowfall	33.0 cm (13.0 in)	62 of 100 (Major)
Glenwood Spgs #2	United States	Record daily precipitation	25.4 mm (1.0 in)	62 of 100 (Major)
Valmora	United States	Record daily precipitation	78.7 mm (3.1 in)	60 of 100 (Major)
Cheyenne	United States	Record daily precipitation	41.1 mm (1.6 in)	60 of 100 (Major)
Dilia	United States	Record daily precipitation	85.1 mm (3.4 in)	59 of 100 (Notable)
Cerro	United States	Record daily precipitation	35.8 mm (1.4 in)	58 of 100 (Notable)
Red Bluff Dam	United States	Record daily precipitation	61.0 mm (2.4 in)	58 of 100 (Notable)
Louisville 1 E	United States	Record low maximum temperature	11.7 C (53.1 F)	57 of 100 (Notable)
Plains	United States	Record daily precipitation	101.6 mm (4.0 in)	57 of 100 (Notable)
Manassa	United States	Record daily precipitation	28.4 mm (1.1 in)	55 of 100 (Notable)
Ft Sumner 5 S	United States	Record daily precipitation	124.7 mm (4.9 in)	55 of 100 (Notable)
Roxboro 7 ESE	United States	Record low maximum temperature	8.3 C (46.9 F)	55 of 100 (Notable)
Frontera Amatenango	Mexico	Record daily precipitation	27.2 mm (1.1 in)	54 of 100 (Notable)
Climax	United States	Record daily precipitation	37.3 mm (1.5 in)	53 of 100 (Notable)
Ft Sumner	United States	Record daily precipitation	50.0 mm (2.0 in)	53 of 100 (Notable)
Gascon	United States	Record daily precipitation	81.8 mm (3.2 in)	53 of 100 (Notable)
Darlington	United States	Record low maximum temperature	10.0 C (50.0 F)	53 of 100 (Notable)
Southport 5 N	United States	Record low maximum temperature	13.3 C (55.9 F)	51 of 100 (Notable)
Woodruff	United States	Record daily precipitation	28.7 mm (1.1 in)	51 of 100 (Notable)
Panoche 2 W	United States	Record daily precipitation	26.7 mm (1.1 in)	50 of 100 (Notable)
Eads	United States	Record daily precipitation	55.6 mm (2.2 in)	50 of 100 (Notable)
Placerville 3SE	United States	Record daily precipitation	32.0 mm (1.3 in)	50 of 100 (Notable)
Elkhorn	United States	Record low maximum temperature	10.0 C (50.0 F)	50 of 100 (Notable)
La Junta Muni AP	United States	Record daily precipitation	48.5 mm (1.9 in)	50 of 100 (Notable)
Ft Collins	United States	Record daily precipitation	61.2 mm (2.4 in)	49 of 100 (Notable)
Rush 1N	United States	Record daily precipitation	41.7 mm (1.6 in)	49 of 100 (Notable)
Dubois	United States	Record daily precipitation	38.6 mm (1.5 in)	49 of 100 (Notable)
Greeley Unc	United States	Record daily precipitation	65.0 mm (2.6 in)	48 of 100 (Notable)
Deland 1 SSE	United States	Record low maximum temperature	18.9 C (66.0 F)	48 of 100 (Notable)
Milledgeville	United States	Record low maximum temperature	12.2 C (54.0 F)	47 of 100 (Notable)
Santa Rosa	United States	Record daily precipitation	92.2 mm (3.6 in)	47 of 100 (Notable)
McColl 3 NNW	United States	Record daily precipitation	37.6 mm (1.5 in)	47 of 100 (Notable)
Newberry	United States	Record low maximum temperature	10.0 C (50.0 F)	47 of 100 (Notable)
Dutch Harbor	United States	Record high minimum temperature	7.8 C (46.0 F)	47 of 100 (Notable)
Canon City	United States	Record daily precipitation	81.5 mm (3.2 in)	46 of 100 (Notable)
Titusville	United States	Record low maximum temperature	20.6 C (69.1 F)	46 of 100 (Notable)
Grenville	United States	Record daily precipitation	50.8 mm (2.0 in)	46 of 100 (Notable)
Wedgefield	United States	Record low maximum temperature	9.4 C (48.9 F)	46 of 100 (Notable)
Diversion Dam	United States	Record daily precipitation	30.2 mm (1.2 in)	46 of 100 (Notable)
Tengchong	China	Record daily precipitation	54.3 mm (2.1 in)	45 of 100 (Notable)
Placerville 3SE	United States	Record daily snowfall	15.2 cm (6.0 in)	45 of 100 (Notable)
Brunswick	United States	Record low maximum temperature	12.2 C (54.0 F)	45 of 100 (Notable)
Monroe 2 SE	United States	Record low maximum temperature	12.2 C (54.0 F)	45 of 100 (Notable)
Little Mtn	United States	Record low maximum temperature	8.3 C (46.9 F)	45 of 100 (Notable)
Twin Lakes Rsvr	United States	Record daily precipitation	25.4 mm (1.0 in)	44 of 100 (Notable)
Emigrant Pass Hwy STN	United States	Record daily precipitation	30.0 mm (1.2 in)	44 of 100 (Notable)
Pecos Nm	United States	Record daily precipitation	25.7 mm (1.0 in)	44 of 100 (Notable)
McClellanville	United States	Record daily precipitation	96.3 mm (3.8 in)	44 of 100 (Notable)
Merluna	Australia	Record daily precipitation	38.4 mm (1.5 in)	43 of 100 (Notable)
Artesia 6S	United States	Record daily precipitation	25.1 mm (1.0 in)	43 of 100 (Notable)
Mt Airy 2 W	United States	Record low maximum temperature	6.7 C (44.1 F)	43 of 100 (Notable)
Tarboro 1 S	United States	Record low maximum temperature	9.4 C (48.9 F)	43 of 100 (Notable)
Columbia UNIV of Sc	United States	Record low maximum temperature	12.2 C (54.0 F)	43 of 100 (Notable)
Biskra	Algeria	Record high maximum temperature	37.0 C (98.6 F)	42 of 100 (Notable)
Steamboat Springs	United States	Record high minimum temperature	5.6 C (42.1 F)	42 of 100 (Notable)

Counts by Type and Timescale

1,012 records

Records set or tied on 30 April 1999 by type: Highest daily maximum 91, Lowest daily maximum 371, Highest daily minimum 124, Lowest daily minimum 154, Heaviest daily rainfall 240, Heaviest daily snowfall 22, Deepest snow cover 10.

Records on 30 April 1999 by type
Record type	Records
Highest daily maximum	91
Lowest daily maximum	371
Highest daily minimum	124
Lowest daily minimum	154
Heaviest daily rainfall	240
Heaviest daily snowfall	22
Deepest snow cover	10

Records on 30 April 1999 by timescale: all-time 4, monthly 70, daily 938.

How Much Records Were Beaten By

839 broken records

Margins by which the 839 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

30 April 1999

Top 20 records on 30 April 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 1999	Springer, US	monthly rain	91.9 mm (3.6 in)	33.5 mm (1.3 in)	94 years	88 of 100 (Exceptional)
30 April 1999	Cimarron 4 SW, US	monthly rain	98.8 mm (3.9 in)	47.0 mm (1.9 in)	85 years	84 of 100 (Exceptional)
30 April 1999	Newkirk, US	monthly rain	108.7 mm (4.3 in)	50.3 mm (2.0 in)	57 years	74 of 100 (Major)
30 April 1999	Red Rvr, US	daily rain	57.9 mm (2.3 in)	38.8 mm (1.5 in)	56 years	66 of 100 (Major)
30 April 1999	Blowing Rock 1NW, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	54 years	66 of 100 (Major)
30 April 1999	Climax, US	daily snowfall	33.0 cm (13.0 in)	15.2 cm (6.0 in)	104 years	62 of 100 (Major)
30 April 1999	Glenwood Spgs #2, US	daily rain	25.4 mm (1.0 in)	12.7 mm (0.5 in)	92 years	62 of 100 (Major)
30 April 1999	Valmora, US	monthly rain	78.7 mm (3.1 in)	28.7 mm (1.1 in)	2 years	60 of 100 (Major)
30 April 1999	Cheyenne, US	daily rain	41.1 mm (1.6 in)	17.0 mm (0.7 in)	84 years	60 of 100 (Major)
30 April 1999	Dilia, US	monthly rain	85.1 mm (3.4 in)	45.5 mm (1.8 in)	14 years	59 of 100 (Notable)
30 April 1999	Cerro, US	daily rain	35.8 mm (1.4 in)	19.3 mm (0.8 in)	56 years	58 of 100 (Notable)
30 April 1999	Red Bluff Dam, US	daily rain	61.0 mm (2.4 in)	43.7 mm (1.7 in)	42 years	58 of 100 (Notable)
30 April 1999	Louisville 1 E, US	daily low max	11.7 C (53.1 F)	7.2 C (13.0 F)	103 years	57 of 100 (Notable)
30 April 1999	Plains, US	monthly rain	101.6 mm (4.0 in)	38.1 mm (1.5 in)	22 years	57 of 100 (Notable)
30 April 1999	Manassa, US	monthly rain	28.4 mm (1.1 in)	9.3 mm (0.37 in)	42 years	55 of 100 (Notable)
30 April 1999	Ft Sumner 5 S, US	monthly rain	124.7 mm (4.9 in)	80.8 mm (3.2 in)	2 years	55 of 100 (Notable)
30 April 1999	Roxboro 7 ESE, US	daily low max	8.3 C (46.9 F)	8.9 C (16.0 F)	103 years	55 of 100 (Notable)
30 April 1999	Frontera Amatenango, MX	daily rain	27.2 mm (1.1 in)	27.2 mm (1.1 in)	37 years	54 of 100 (Notable)
30 April 1999	Climax, US	monthly rain	37.3 mm (1.5 in)	1.7 mm (0.07 in)	104 years	53 of 100 (Notable)
30 April 1999	Ft Sumner, US	daily rain	50.0 mm (2.0 in)	37.8 mm (1.5 in)	20 years	53 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 1999

Records set or tied on this calendar date in each year from 1795 to 1999. 1999 had 1,012 records.

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

Records on 04-30 in each year
Year	Records
1795	1
1804	1
1809	1
1812	1
1814	2
1833	1
1840	1
1848	1
1850	1
1853	1
1854	1
1856	1
1859	1
1862	1
1864	1
1865	1
1866	3
1872	1
1873	1
1874	2
1876	1
1878	4
1879	2
1880	1
1881	1
1882	1
1884	1
1885	1
1886	5
1888	1
1889	1
1891	5
1892	7
1894	1
1895	5
1896	3
1897	2
1898	6
1899	11
1900	4
1901	8
1902	13
1903	21
1904	11
1905	9
1906	16
1907	35
1908	28
1909	74
1910	17
1911	19
1912	18
1913	62
1914	8
1915	20
1916	21
1917	25
1918	28
1919	130
1920	70
1921	54
1922	138
1923	42
1924	96
1925	210
1926	331
1927	127
1928	130
1929	119
1930	232
1931	548
1932	145
1933	422
1934	443
1935	327
1936	373
1937	228
1938	282
1939	268
1940	526
1941	484
1942	1,163
1943	470
1944	286
1945	314
1946	301
1947	330
1948	912
1949	447
1950	671
1951	783
1952	435
1953	635
1954	1,224
1955	1,252
1956	908
1957	401
1958	482
1959	575
1960	507
1961	381
1962	617
1963	730
1964	339
1965	488
1966	740
1967	914
1968	928
1969	587
1970	1,189
1971	365
1972	497
1973	398
1974	822
1975	468
1976	783
1977	525
1978	631
1979	675
1980	545
1981	1,342
1982	504
1983	1,154
1984	1,519
1985	650
1986	660
1987	1,437
1988	808
1989	674
1990	977
1991	828
1992	1,808
1993	765
1994	1,499
1995	1,007
1996	1,637
1997	764
1998	857
1999	1,012
2000	1,046
2001	900
2002	1,171
2003	927
2004	703
2005	1,113
2006	778
2007	996
2008	1,260
2009	660
2010	921
2011	636
2012	819
2013	732
2014	946
2015	380
2016	969
2017	1,450
2018	708
2019	700
2020	1,476
2021	1,167
2022	499
2023	782
2024	705
2025	489
2026	365

Download the Data

Data for records on 1999-04-30: 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 20	778
20 to 40	36
40 to 60	15
60 to 80	5
80 to 100	1
100 to 120	2
120 to 140	0
140 to 160	2