Weather Records on 23 April 1999

1,198 weather records were set or tied worldwide on 23 April 1999. Highest significance: Centennial 1NE, US.

Key Facts for 23 April 1999

On 23 April 1999, 1,198 weather records were set or tied at long-record stations worldwide.
507 were record highs and 317 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 56 monthly and 1,141 daily.
Centennial 1NE set a daily record precipitation of 29.2 mm (1.1 in) on 23 April 1999.
Across 167 earlier years (1800 to 2026) the same calendar date averaged 440 records.

Record Map

1,198 stations

1,198 station records on 23 April 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 April 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Centennial 1NE	United States	Record daily precipitation	29.2 mm (1.1 in)	71 of 100 (Major)
Riverton	United States	Record snow depth	20.3 cm (8.0 in)	71 of 100 (Major)
Watertown Wwtp	United States	Record daily precipitation	62.0 mm (2.4 in)	69 of 100 (Major)
Escalante	United States	Record daily snowfall	12.7 cm (5.0 in)	63 of 100 (Major)
Waukesha Wwtp	United States	Record daily precipitation	53.8 mm (2.1 in)	62 of 100 (Major)
Lowell	United States	Record daily precipitation	79.8 mm (3.1 in)	60 of 100 (Major)
Aurora Water	United States	Record daily precipitation	53.1 mm (2.1 in)	59 of 100 (Notable)
Riverton	United States	Record daily snowfall	25.4 cm (10.0 in)	58 of 100 (Notable)
Lake Mills Wwtp	United States	Record daily precipitation	78.7 mm (3.1 in)	56 of 100 (Notable)
Longmont 2 ESE	United States	Record daily precipitation	36.1 mm (1.4 in)	55 of 100 (Notable)
Beloit	United States	Record daily precipitation	56.1 mm (2.2 in)	55 of 100 (Notable)
Pavillion	United States	Record snow depth	17.8 cm (7.0 in)	55 of 100 (Notable)
Madras/Minambakkam	India	Record daily precipitation	46.0 mm (1.8 in)	54 of 100 (Notable)
Valparaiso Wtr Wks	United States	Record daily precipitation	38.9 mm (1.5 in)	54 of 100 (Notable)
Ft Atkinson Wwtp	United States	Record daily precipitation	67.6 mm (2.7 in)	53 of 100 (Notable)
Centennial 1NE	United States	Record snow depth	50.8 cm (20.0 in)	53 of 100 (Notable)
Dubois	United States	Record snow depth	27.9 cm (11.0 in)	53 of 100 (Notable)
Morrison	United States	Record daily precipitation	43.2 mm (1.7 in)	52 of 100 (Notable)
Germantown Wastewater Utility	United States	Record daily precipitation	57.4 mm (2.3 in)	52 of 100 (Notable)
Oconomowoc Wwtp	United States	Record daily precipitation	60.2 mm (2.4 in)	52 of 100 (Notable)
Prairie du Sac 2 N	United States	Record daily precipitation	51.3 mm (2.0 in)	51 of 100 (Notable)
Bailey	United States	Record daily snowfall	38.1 cm (15.0 in)	50 of 100 (Notable)
Sedalia 4 SSE	United States	Record daily snowfall	25.4 cm (10.0 in)	50 of 100 (Notable)
Conroe	United States	Record high minimum temperature	26.1 C (79.0 F)	50 of 100 (Notable)
Baraboo Wwtp	United States	Record daily precipitation	50.8 mm (2.0 in)	50 of 100 (Notable)
Galena	United States	Record daily precipitation	52.1 mm (2.1 in)	49 of 100 (Notable)
Mt Mary College	United States	Record daily precipitation	57.2 mm (2.3 in)	49 of 100 (Notable)
Buena Vista 2S	United States	Record snow depth	20.3 cm (8.0 in)	48 of 100 (Notable)
Boulder	United States	Record daily precipitation	40.9 mm (1.6 in)	47 of 100 (Notable)
Richland Ctr	United States	Record daily precipitation	43.2 mm (1.7 in)	47 of 100 (Notable)
Castle Rock	United States	Record snow depth	20.3 cm (8.0 in)	45 of 100 (Notable)
Wheaton 3 SE	United States	Record daily precipitation	50.8 mm (2.0 in)	45 of 100 (Notable)
Brodhead Wwtp	United States	Record daily precipitation	43.7 mm (1.7 in)	45 of 100 (Notable)
Mauston 1 SE	United States	Record daily precipitation	40.4 mm (1.6 in)	45 of 100 (Notable)
Blue Mounds 6 SSE	United States	Record daily precipitation	53.6 mm (2.1 in)	44 of 100 (Notable)
Tashkent	Uzbekistan	Record low maximum temperature	9.8 C (49.6 F)	44 of 100 (Notable)
Walnut	United States	Record daily precipitation	49.3 mm (1.9 in)	43 of 100 (Notable)
Alma	United States	Record daily precipitation	47.2 mm (1.9 in)	43 of 100 (Notable)
Plymouth Wwtp	United States	Record daily precipitation	35.8 mm (1.4 in)	43 of 100 (Notable)
Mtn View	United States	Record daily snowfall	15.2 cm (6.0 in)	43 of 100 (Notable)
Tbilisi	Georgia	Record low maximum temperature	7.3 C (45.1 F)	42 of 100 (Notable)
Cheesman	United States	Record daily snowfall	27.9 cm (11.0 in)	42 of 100 (Notable)
Georgetown	United States	Record snow depth	27.9 cm (11.0 in)	42 of 100 (Notable)
Logansport Cicott St	United States	Record high minimum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Washington	United States	Record daily precipitation	41.9 mm (1.6 in)	42 of 100 (Notable)
East Lansing 4 S	United States	Record daily precipitation	45.5 mm (1.8 in)	42 of 100 (Notable)
Boulder	United States	Record daily snowfall	12.7 cm (5.0 in)	42 of 100 (Notable)
Wisconsin Dells Wwtp	United States	Record daily precipitation	45.7 mm (1.8 in)	42 of 100 (Notable)
Cairns Post Office	Australia	Record low maximum temperature	24.5 C (76.1 F)	41 of 100 (Notable)
Bishkek	Kyrgyzstan	Record low maximum temperature	2.0 C (35.6 F)	41 of 100 (Notable)
Barrington 3SW	United States	Record daily precipitation	56.1 mm (2.2 in)	41 of 100 (Notable)
Saginaw #3	United States	Record daily precipitation	42.4 mm (1.7 in)	41 of 100 (Notable)
Portage Wwtp	United States	Record daily precipitation	46.2 mm (1.8 in)	41 of 100 (Notable)
Racine Wwtp	United States	Record daily precipitation	65.3 mm (2.6 in)	41 of 100 (Notable)
W Allis	United States	Record daily precipitation	50.0 mm (2.0 in)	41 of 100 (Notable)
Tyler Pounds Fld	United States	Record high maximum temperature	31.1 C (88.0 F)	41 of 100 (Notable)
Semej	Kazakhstan	Record low maximum temperature	0.8 C (33.4 F)	40 of 100 (Notable)
San Ignacio	Mexico	Record high minimum temperature	22.8 C (73.0 F)	40 of 100 (Notable)
Dubuque L&D 11	United States	Record daily precipitation	35.1 mm (1.4 in)	40 of 100 (Notable)
Greenville 2 NNE	United States	Record daily precipitation	47.2 mm (1.9 in)	40 of 100 (Notable)

Counts by Type and Timescale

1,198 records

Records set or tied on 23 April 1999 by type: Highest daily maximum 198, Lowest daily maximum 198, Highest daily minimum 309, Lowest daily minimum 119, Heaviest daily rainfall 281, Heaviest daily snowfall 54, Deepest snow cover 39.

Records on 23 April 1999 by type
Record type	Records
Highest daily maximum	198
Lowest daily maximum	198
Highest daily minimum	309
Lowest daily minimum	119
Heaviest daily rainfall	281
Heaviest daily snowfall	54
Deepest snow cover	39

Records on 23 April 1999 by timescale: all-time 1, monthly 56, daily 1,141.

How Much Records Were Beaten By

947 broken records

Margins by which the 947 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 279.0. Ties are not counted.

Top 20 by Significance

23 April 1999

Top 20 records on 23 April 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 April 1999	Centennial 1NE, US	daily rain	29.2 mm (1.1 in)	20.6 mm (0.8 in)	84 years	71 of 100 (Major)
23 April 1999	Riverton, US	daily snow depth	20.3 cm (8.0 in)	20.3 cm (8.0 in)	92 years	71 of 100 (Major)
23 April 1999	Watertown Wwtp, US	daily rain	62.0 mm (2.4 in)	29.0 mm (1.1 in)	73 years	69 of 100 (Major)
23 April 1999	Escalante, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	96 years	63 of 100 (Major)
23 April 1999	Waukesha Wwtp, US	daily rain	53.8 mm (2.1 in)	23.3 mm (0.9 in)	88 years	62 of 100 (Major)
23 April 1999	Lowell, US	monthly rain	79.8 mm (3.1 in)	27.7 mm (1.1 in)	32 years	60 of 100 (Major)
23 April 1999	Aurora Water, US	daily rain	53.1 mm (2.1 in)	19.8 mm (0.8 in)	102 years	59 of 100 (Notable)
23 April 1999	Riverton, US	daily snowfall	25.4 cm (10.0 in)	17.8 cm (7.0 in)	76 years	58 of 100 (Notable)
23 April 1999	Lake Mills Wwtp, US	monthly rain	78.7 mm (3.1 in)	8.6 mm (0.34 in)	90 years	56 of 100 (Notable)
23 April 1999	Longmont 2 ESE, US	daily rain	36.1 mm (1.4 in)	17.8 mm (0.7 in)	84 years	55 of 100 (Notable)
23 April 1999	Beloit, US	daily rain	56.1 mm (2.2 in)	29.4 mm (1.2 in)	54 years	55 of 100 (Notable)
23 April 1999	Pavillion, US	daily snow depth	17.8 cm (7.0 in)	12.7 cm (5.0 in)	78 years	55 of 100 (Notable)
23 April 1999	Madras/Minambakkam, IN	daily rain	46.0 mm (1.8 in)	44.0 mm (1.7 in)	61 years	54 of 100 (Notable)
23 April 1999	Valparaiso Wtr Wks, US	daily rain	38.9 mm (1.5 in)	13.5 mm (0.5 in)	100 years	54 of 100 (Notable)
23 April 1999	Ft Atkinson Wwtp, US	daily rain	67.6 mm (2.7 in)	28.7 mm (1.1 in)	50 years	53 of 100 (Notable)
23 April 1999	Centennial 1NE, US	daily snow depth	50.8 cm (20.0 in)	20.3 cm (8.0 in)	78 years	53 of 100 (Notable)
23 April 1999	Dubois, US	daily snow depth	27.9 cm (11.0 in)	17.7 cm (7.0 in)	68 years	53 of 100 (Notable)
23 April 1999	Morrison, US	daily rain	43.2 mm (1.7 in)	12.5 mm (0.5 in)	102 years	52 of 100 (Notable)
23 April 1999	Germantown Wastewater Utility, US	daily rain	57.4 mm (2.3 in)	29.5 mm (1.2 in)	50 years	52 of 100 (Notable)
23 April 1999	Oconomowoc Wwtp, US	monthly rain	60.2 mm (2.4 in)	2.5 mm (0.10 in)	106 years	52 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

1800 to 1999

Records set or tied on this calendar date in each year from 1800 to 1999. 1999 had 1,198 records.

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

Records on 04-23 in each year
Year	Records
1800	1
1809	1
1812	1
1817	3
1838	1
1840	1
1842	1
1851	1
1852	2
1854	1
1855	5
1857	2
1859	1
1861	1
1865	1
1868	2
1870	1
1872	1
1873	4
1874	4
1875	1
1877	1
1878	1
1879	1
1881	2
1882	1
1883	2
1884	3
1885	4
1886	4
1888	1
1889	1
1890	4
1891	2
1892	1
1893	2
1895	3
1896	4
1897	2
1898	1
1899	6
1900	4
1901	9
1902	12
1903	20
1904	8
1905	7
1906	23
1907	12
1908	14
1909	28
1910	35
1911	21
1912	29
1913	40
1914	71
1915	41
1916	35
1917	37
1918	92
1919	66
1920	75
1921	81
1922	45
1923	132
1924	111
1925	506
1926	124
1927	562
1928	302
1929	103
1930	487
1931	506
1932	231
1933	361
1934	272
1935	152
1936	342
1937	321
1938	177
1939	339
1940	319
1941	277
1942	473
1943	819
1944	678
1945	364
1946	649
1947	242
1948	401
1949	401
1950	577
1951	426
1952	500
1953	300
1954	548
1955	654
1956	581
1957	623
1958	649
1959	442
1960	1,648
1961	884
1962	389
1963	801
1964	958
1965	660
1966	386
1967	1,183
1968	816
1969	705
1970	1,209
1971	508
1972	332
1973	518
1974	486
1975	411
1976	386
1977	979
1978	523
1979	554
1980	1,460
1981	1,124
1982	1,191
1983	1,031
1984	971
1985	1,011
1986	1,541
1987	676
1988	1,051
1989	1,469
1990	1,077
1991	638
1992	592
1993	1,256
1994	666
1995	1,464
1996	1,520
1997	1,024
1998	1,446
1999	1,198
2000	1,003
2001	1,435
2002	971
2003	557
2004	610
2005	940
2006	839
2007	847
2008	775
2009	920
2010	1,040
2011	1,190
2012	1,796
2013	1,655
2014	362
2015	511
2016	542
2017	474
2018	684
2019	668
2020	564
2021	562
2022	692
2023	980
2024	583
2025	410
2026	503

Download the Data

Data for records on 1999-04-23: 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	898
50 to 100	13
100 to 150	15
150 to 200	9
200 to 250	10
250 to 300	2