Weather Records on 1 August 2021

1,009 weather records were set or tied worldwide on 1 August 2021. Highest significance: Black Rock, US.

Key Facts for 1 August 2021

On 1 August 2021, 1,009 weather records were set or tied at long-record stations worldwide.
518 were record highs and 182 were record lows, counting maximum and minimum temperature.
By timescale, 16 were all-time records, 67 monthly and 926 daily.
Black Rock set a monthly record daily precipitation of 54.4 mm (2.1 in) on 1 August 2021.
Across 164 earlier years (1797 to 2026) the same calendar date averaged 438 records.

Record Map

1,009 stations

1,009 station records on 1 August 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 August 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Black Rock	United States	Record daily precipitation	54.4 mm (2.1 in)	81 of 100 (Exceptional)
North Lakhimpur	India	Record daily precipitation	170.9 mm (6.7 in)	78 of 100 (Major)
Ajmer	India	Record daily precipitation	136.9 mm (5.4 in)	67 of 100 (Major)
Mtn Home AFB	United States	Record daily precipitation	29.7 mm (1.2 in)	65 of 100 (Major)
Hope	United States	Record daily precipitation	41.9 mm (1.6 in)	64 of 100 (Major)
Trinity Mtn.	United States	Record daily precipitation	71.1 mm (2.8 in)	62 of 100 (Major)
Red Rvr	United States	Record low maximum temperature	10.6 C (51.1 F)	60 of 100 (Major)
Rocky Basin-Settleme	United States	Record daily precipitation	78.7 mm (3.1 in)	60 of 100 (Major)
Heppner	United States	Record high minimum temperature	25.0 C (77.0 F)	56 of 100 (Notable)
Lamoille #3	United States	Record daily precipitation	66.0 mm (2.6 in)	56 of 100 (Notable)
Springfield Exp STN	United States	Record daily precipitation	61.0 mm (2.4 in)	55 of 100 (Notable)
Suffolk Lake Kilby	United States	Record daily precipitation	94.7 mm (3.7 in)	53 of 100 (Notable)
Rock Creek	United States	Record daily precipitation	30.5 mm (1.2 in)	53 of 100 (Notable)
Wilbur	United States	Record high minimum temperature	23.3 C (73.9 F)	52 of 100 (Notable)
Stevensville	United States	Record high minimum temperature	19.4 C (66.9 F)	50 of 100 (Notable)
Colville	United States	Record high minimum temperature	22.8 C (73.0 F)	50 of 100 (Notable)
Watertown AP	United States	Record daily precipitation	59.9 mm (2.4 in)	48 of 100 (Notable)
Yankalilla	Australia	Record daily precipitation	30.0 mm (1.2 in)	47 of 100 (Notable)
Raoul Isl/Kermadec	New Zealand	Record daily precipitation	98.3 mm (3.9 in)	47 of 100 (Notable)
Kim 15 NNE	United States	Record daily precipitation	81.3 mm (3.2 in)	47 of 100 (Notable)
Prosser	United States	Record high minimum temperature	23.3 C (73.9 F)	47 of 100 (Notable)
Mill-D North	United States	Record daily precipitation	45.7 mm (1.8 in)	47 of 100 (Notable)
Gravelly	United States	Record daily precipitation	45.2 mm (1.8 in)	46 of 100 (Notable)
Lifton Pumping STN	United States	Record daily precipitation	25.9 mm (1.0 in)	46 of 100 (Notable)
Jacksonville 2E	United States	Record low maximum temperature	20.6 C (69.1 F)	46 of 100 (Notable)
Yerington	United States	Record high minimum temperature	22.2 C (72.0 F)	46 of 100 (Notable)
Cimarron 4 SW	United States	Record daily precipitation	35.3 mm (1.4 in)	46 of 100 (Notable)
Odessa	United States	Record high minimum temperature	23.3 C (73.9 F)	46 of 100 (Notable)
Priest Rvr Exp STN	United States	Record high minimum temperature	18.9 C (66.0 F)	45 of 100 (Notable)
Windsor	United States	Record low maximum temperature	19.4 C (66.9 F)	45 of 100 (Notable)
Gouverneur 3 NW	United States	Record low maximum temperature	15.6 C (60.1 F)	44 of 100 (Notable)
Sandpoint Exp STN	United States	Record high minimum temperature	20.0 C (68.0 F)	43 of 100 (Notable)
Wallowa	United States	Record high minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Wilbur	United States	Record high maximum temperature	39.4 C (102.9 F)	43 of 100 (Notable)
Hvar	Croatia	Record high minimum temperature	27.5 C (81.5 F)	42 of 100 (Notable)
Daltonganj	India	Record daily precipitation	117.1 mm (4.6 in)	42 of 100 (Notable)
Saginaw #3	United States	Record daily precipitation	25.1 mm (1.0 in)	42 of 100 (Notable)
Saverton L&D 22	United States	Record daily precipitation	57.2 mm (2.3 in)	42 of 100 (Notable)
Bountiful Bench	United States	Record daily precipitation	49.8 mm (2.0 in)	42 of 100 (Notable)
Hole-in-Rock	United States	Record daily precipitation	27.9 mm (1.1 in)	42 of 100 (Notable)
Palmerville	Australia	Record high maximum temperature	33.2 C (91.8 F)	41 of 100 (Notable)
Rumoi	Japan	Record high maximum temperature	35.6 C (96.1 F)	41 of 100 (Notable)
Tarpon Spgs Sewage Plt	United States	Record high minimum temperature	27.8 C (82.0 F)	41 of 100 (Notable)
Kellogg	United States	Record high maximum temperature	41.7 C (107.1 F)	41 of 100 (Notable)
Ft Benton	United States	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Morrisville 6 SW	United States	Record low maximum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Brownsville	United States	Record daily precipitation	41.9 mm (1.6 in)	41 of 100 (Notable)
Landsburg	United States	Record high minimum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Lewistown AP	United States	Record high minimum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Gustavus	United States	Record high maximum temperature	27.8 C (82.0 F)	41 of 100 (Notable)
Hyden	Australia	Record low maximum temperature	8.0 C (46.4 F)	40 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record high maximum temperature	20.9 C (69.6 F)	40 of 100 (Notable)
Mogoca	Russia	Record low maximum temperature	13.7 C (56.7 F)	40 of 100 (Notable)
Sedan	United States	Record daily precipitation	33.8 mm (1.3 in)	40 of 100 (Notable)
Walnut 4S	United States	Record daily precipitation	28.2 mm (1.1 in)	40 of 100 (Notable)
Summit Ranch	United States	Record high minimum temperature	17.6 C (63.7 F)	40 of 100 (Notable)
Kimberly Mine	United States	Record daily precipitation	25.4 mm (1.0 in)	40 of 100 (Notable)
Ruxton Park	United States	Record daily precipitation	87.6 mm (3.4 in)	39 of 100 (Notable)
Fenn Rs	United States	Record high minimum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
Elizabeth City	United States	Record daily precipitation	53.3 mm (2.1 in)	39 of 100 (Notable)

Counts by Type and Timescale

1,009 records

Records set or tied on 1 August 2021 by type: Highest daily maximum 173, Lowest daily maximum 145, Highest daily minimum 345, Lowest daily minimum 37, Heaviest daily rainfall 309.

Records on 1 August 2021 by type
Record type	Records
Highest daily maximum	173
Lowest daily maximum	145
Highest daily minimum	345
Lowest daily minimum	37
Heaviest daily rainfall	309
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 1 August 2021 by timescale: all-time 16, monthly 67, daily 926.

How Much Records Were Beaten By

809 broken records

Margins by which the 809 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 103.8. Ties are not counted.

Top 20 by Significance

1 August 2021

Top 20 records on 1 August 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 August 2021	Black Rock, US	monthly rain	54.4 mm (2.1 in)	16.6 mm (0.7 in)	117 years	81 of 100 (Exceptional)
1 August 2021	North Lakhimpur, IN	daily rain	170.9 mm (6.7 in)	103.8 mm (4.1 in)	100 years	78 of 100 (Major)
1 August 2021	Ajmer, IN	daily rain	136.9 mm (5.4 in)	86.9 mm (3.4 in)	58 years	67 of 100 (Major)
1 August 2021	Mtn Home AFB, US	daily rain	29.7 mm (1.2 in)	26.9 mm (1.1 in)	60 years	65 of 100 (Major)
1 August 2021	Hope, US	daily rain	41.9 mm (1.6 in)	34.0 mm (1.3 in)	86 years	64 of 100 (Major)
1 August 2021	Trinity Mtn., US	monthly rain	71.1 mm (2.8 in)	35.5 mm (1.4 in)	27 years	62 of 100 (Major)
1 August 2021	Red Rvr, US	monthly low max	10.6 C (51.1 F)	2.7 C (4.9 F)	114 years	60 of 100 (Major)
1 August 2021	Rocky Basin-Settleme, US	monthly rain	78.7 mm (3.1 in)	35.5 mm (1.4 in)	22 years	60 of 100 (Major)
1 August 2021	Heppner, US	monthly high min	25.0 C (77.0 F)	2.2 C (4.0 F)	119 years	56 of 100 (Notable)
1 August 2021	Lamoille #3, US	monthly rain	66.0 mm (2.6 in)	20.3 mm (0.8 in)	34 years	56 of 100 (Notable)
1 August 2021	Springfield Exp STN, US	daily rain	61.0 mm (2.4 in)	34.3 mm (1.4 in)	78 years	55 of 100 (Notable)
1 August 2021	Suffolk Lake Kilby, US	daily rain	94.7 mm (3.7 in)	51.8 mm (2.0 in)	72 years	53 of 100 (Notable)
1 August 2021	Rock Creek, US	daily rain	30.5 mm (1.2 in)	22.9 mm (0.9 in)	30 years	53 of 100 (Notable)
1 August 2021	Wilbur, US	monthly high min	23.3 C (73.9 F)	2.2 C (4.0 F)	90 years	52 of 100 (Notable)
1 August 2021	Stevensville, US	daily high min	19.4 C (66.9 F)	3.3 C (5.9 F)	103 years	50 of 100 (Notable)
1 August 2021	Colville, US	monthly high min	22.8 C (73.0 F)	1.1 C (2.0 F)	90 years	50 of 100 (Notable)
1 August 2021	Watertown AP, US	daily rain	59.9 mm (2.4 in)	35.3 mm (1.4 in)	38 years	48 of 100 (Notable)
1 August 2021	Yankalilla, AU	daily rain	30.0 mm (1.2 in)	4.1 mm (0.16 in)	125 years	47 of 100 (Notable)
1 August 2021	Raoul Isl/Kermadec, NZ	daily rain	98.3 mm (3.9 in)	42.4 mm (1.7 in)	24 years	47 of 100 (Notable)
1 August 2021	Kim 15 NNE, US	monthly rain	81.3 mm (3.2 in)	9.2 mm (0.36 in)	70 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

1797 to 2021

Records set or tied on this calendar date in each year from 1797 to 2021. 2021 had 1,009 records.

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

Records on 08-01 in each year
Year	Records
1797	1
1816	2
1829	1
1833	1
1834	2
1836	1
1838	1
1842	1
1851	1
1856	1
1858	3
1859	1
1861	1
1862	1
1863	1
1865	1
1868	1
1869	2
1873	1
1874	1
1875	3
1876	1
1878	1
1879	1
1881	3
1883	1
1886	2
1887	1
1890	1
1891	7
1892	4
1893	3
1894	1
1895	3
1896	4
1897	2
1898	3
1899	1
1900	1
1901	3
1902	5
1903	19
1904	10
1905	12
1906	18
1907	13
1908	18
1909	15
1910	30
1911	46
1912	49
1913	25
1914	17
1915	49
1916	16
1917	108
1918	55
1919	32
1920	101
1921	87
1922	44
1923	203
1924	93
1925	281
1926	252
1927	266
1928	132
1929	161
1930	252
1931	362
1932	408
1933	487
1934	448
1935	547
1936	636
1937	492
1938	523
1939	335
1940	333
1941	341
1942	388
1943	398
1944	410
1945	975
1946	336
1947	401
1948	354
1949	324
1950	552
1951	420
1952	391
1953	565
1954	462
1955	796
1956	441
1957	270
1958	389
1959	352
1960	677
1961	404
1962	602
1963	270
1964	883
1965	669
1966	383
1967	250
1968	625
1969	453
1970	482
1971	1,135
1972	609
1973	766
1974	526
1975	915
1976	886
1977	636
1978	706
1979	580
1980	906
1981	668
1982	742
1983	931
1984	532
1985	987
1986	846
1987	999
1988	880
1989	1,301
1990	927
1991	740
1992	1,024
1993	907
1994	1,217
1995	1,513
1996	1,118
1997	904
1998	1,281
1999	1,707
2000	1,020
2001	1,079
2002	1,249
2003	1,155
2004	740
2005	878
2006	1,655
2007	746
2008	795
2009	932
2010	1,182
2011	1,191
2012	850
2013	542
2014	853
2015	864
2016	499
2017	758
2018	987
2019	479
2020	838
2021	1,009
2022	915
2023	627
2024	879
2025	785
2026	1,085

Download the Data

Data for records on 2021-08-01: 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	781
20 to 40	23
40 to 60	3
60 to 80	0
80 to 100	1
100 to 120	1