Weather Records on 30 September 1948

267 weather records were set or tied worldwide on 30 September 1948. Highest significance: Philo 3 SW, US.

Key Facts for 30 September 1948

On 30 September 1948, 267 weather records were set or tied at long-record stations worldwide.
110 were record highs and 79 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 10 monthly and 257 daily.
Philo 3 SW set a daily record precipitation of 65.3 mm (2.6 in) on 30 September 1948.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 441 records.

Record Map

267 stations

267 station records on 30 September 1948 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 1948: highest significance records shown on the map
Station	Country	Type	Value	Significance
Philo 3 SW	United States	Record daily precipitation	65.3 mm (2.6 in)	49 of 100 (Notable)
Karanjia	India	Record daily precipitation	80.0 mm (3.1 in)	40 of 100 (Notable)
Bolangir	India	Record daily precipitation	132.1 mm (5.2 in)	39 of 100 (Notable)
Ron	India	Record daily precipitation	86.4 mm (3.4 in)	36 of 100 (Notable)
Bowling Green Wwtp	United States	Record daily precipitation	41.7 mm (1.6 in)	34 of 100 (Routine)
Deogarh (Bamra)	India	Record daily precipitation	42.7 mm (1.7 in)	33 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Bolgarh	India	Record daily precipitation	119.1 mm (4.7 in)	32 of 100 (Routine)
Zanesville Wwtp	United States	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Shawinigan	Canada	Record high maximum temperature	29.4 C (84.9 F)	30 of 100 (Routine)
Calgary Int'l A	Canada	Record low minimum temperature	-7.2 C (19.0 F)	29 of 100 (Routine)
Vita (Khanapur)	India	Record daily precipitation	85.6 mm (3.4 in)	29 of 100 (Routine)
Hata	India	Record daily precipitation	64.8 mm (2.6 in)	29 of 100 (Routine)
Gariabund	India	Record daily precipitation	87.4 mm (3.4 in)	28 of 100 (Routine)
Cooperstown	United States	Record high maximum temperature	30.0 C (86.0 F)	26 of 100 (Routine)
Lisboa Geofisica	Portugal	Record high maximum temperature	35.3 C (95.5 F)	25 of 100 (Routine)
Gardiner	United States	Record high maximum temperature	28.9 C (84.0 F)	25 of 100 (Routine)
Tbilisi	Georgia	Record high minimum temperature	17.5 C (63.5 F)	24 of 100 (Routine)
Navanagar	India	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Mahasamund	India	Record daily precipitation	61.5 mm (2.4 in)	24 of 100 (Routine)
Bella Coola	Canada	Record low minimum temperature	-3.3 C (26.1 F)	23 of 100 (Routine)
Borio	India	Record daily precipitation	123.2 mm (4.9 in)	23 of 100 (Routine)
Farmington	United States	Record high maximum temperature	30.0 C (86.0 F)	23 of 100 (Routine)
Buchanan	United States	Record daily precipitation	38.1 mm (1.5 in)	23 of 100 (Routine)
Georgetown Post Office	Australia	Record high maximum temperature	37.8 C (100.0 F)	22 of 100 (Routine)
La Malbaie	Canada	Record high minimum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Central Michigan UNIV	United States	Record high minimum temperature	13.9 C (57.0 F)	22 of 100 (Routine)
Arlington	United States	Record low minimum temperature	1.1 C (34.0 F)	22 of 100 (Routine)
Wallaceburg	Canada	Record high minimum temperature	16.1 C (61.0 F)	21 of 100 (Routine)
Bhandara	India	Record daily precipitation	29.2 mm (1.1 in)	21 of 100 (Routine)
Moscow U of I	United States	Record low minimum temperature	-1.1 C (30.0 F)	21 of 100 (Routine)
Centennial 1NE	United States	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Leslie Manor (Boolarra)	Australia	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Howell Wwtp	United States	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Oracle	United States	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Laramie	United States	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Kamloops	Canada	Record low minimum temperature	-0.6 C (30.9 F)	20 of 100 (Routine)
Selonah	India	Record daily precipitation	57.2 mm (2.3 in)	20 of 100 (Routine)
Faizabad	India	Record daily precipitation	63.5 mm (2.5 in)	20 of 100 (Routine)
Hooghly	India	Record daily precipitation	74.9 mm (2.9 in)	20 of 100 (Routine)
Rumford	United States	Record high maximum temperature	30.6 C (87.1 F)	20 of 100 (Routine)
Blaine	United States	Record low minimum temperature	-1.1 C (30.0 F)	20 of 100 (Routine)
Lakeside	United States	Record low minimum temperature	1.7 C (35.1 F)	20 of 100 (Routine)
Plymouth Wwtp	United States	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Shawano 2SSW	United States	Record high minimum temperature	12.2 C (54.0 F)	20 of 100 (Routine)
Mt Clemens Ang Base	United States	Record high minimum temperature	16.1 C (61.0 F)	20 of 100 (Routine)
Longreach Post Office	Australia	Record high maximum temperature	38.9 C (102.0 F)	19 of 100 (Routine)
Hedley	Canada	Record low minimum temperature	-1.1 C (30.0 F)	19 of 100 (Routine)
Chaplin	Canada	Record low minimum temperature	-6.7 C (19.9 F)	19 of 100 (Routine)
Yellamanchili	India	Record daily precipitation	58.4 mm (2.3 in)	19 of 100 (Routine)
Khachrod	India	Record daily precipitation	25.4 mm (1.0 in)	19 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record high maximum temperature	33.9 C (93.0 F)	19 of 100 (Routine)
Madison	United States	Record high maximum temperature	28.9 C (84.0 F)	19 of 100 (Routine)
Presque Isle	United States	Record high maximum temperature	25.0 C (77.0 F)	19 of 100 (Routine)
Emerald Post Office	Australia	Record high maximum temperature	37.2 C (99.0 F)	18 of 100 (Routine)
Walgett Council Depot	Australia	Record high maximum temperature	37.2 C (99.0 F)	18 of 100 (Routine)
High River	Canada	Record low minimum temperature	-10.6 C (12.9 F)	18 of 100 (Routine)
Morrisburg	Canada	Record high maximum temperature	31.1 C (88.0 F)	18 of 100 (Routine)
Amchong(Sonepur)	India	Record daily precipitation	41.9 mm (1.6 in)	18 of 100 (Routine)
Jakutsk	Russia	Record low minimum temperature	-11.6 C (11.1 F)	18 of 100 (Routine)

Counts by Type and Timescale

267 records

Records set or tied on 30 September 1948 by type: Highest daily maximum 73, Lowest daily maximum 8, Highest daily minimum 37, Lowest daily minimum 71, Heaviest daily rainfall 77, Deepest snow cover 1.

Records on 30 September 1948 by type
Record type	Records
Highest daily maximum	73
Lowest daily maximum	8
Highest daily minimum	37
Lowest daily minimum	71
Heaviest daily rainfall	77
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 30 September 1948 by timescale: all-time 0, monthly 10, daily 257.

How Much Records Were Beaten By

200 broken records

Margins by which the 200 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 80.3. Ties are not counted.

Top 20 by Significance

30 September 1948

Top 20 records on 30 September 1948 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1948	Philo 3 SW, US	daily rain	65.3 mm (2.6 in)	50.3 mm (2.0 in)	14 years	49 of 100 (Notable)
30 September 1948	Karanjia, IN	daily rain	80.0 mm (3.1 in)	47.0 mm (1.9 in)	39 years	40 of 100 (Notable)
30 September 1948	Bolangir, IN	daily rain	132.1 mm (5.2 in)	80.3 mm (3.2 in)	3 years	39 of 100 (Notable)
30 September 1948	Ron, IN	daily rain	86.4 mm (3.4 in)	35.6 mm (1.4 in)	41 years	36 of 100 (Notable)
30 September 1948	Bowling Green Wwtp, US	daily rain	41.7 mm (1.6 in)	19.3 mm (0.8 in)	42 years	34 of 100 (Routine)
30 September 1948	Deogarh (Bamra), IN	daily rain	42.7 mm (1.7 in)	28.7 mm (1.1 in)	39 years	33 of 100 (Routine)
30 September 1948	Fredericton Unb, CA	daily high max	26.1 C (79.0 F)	2.2 C (4.0 F)	68 years	32 of 100 (Routine)
30 September 1948	Bolgarh, IN	monthly rain	119.1 mm (4.7 in)	23.8 mm (0.9 in)	18 years	32 of 100 (Routine)
30 September 1948	Zanesville Wwtp, US	daily rain	50.8 mm (2.0 in)	22.9 mm (0.9 in)	14 years	32 of 100 (Routine)
30 September 1948	Shawinigan, CA	daily high max	29.4 C (84.9 F)	6.6 C (11.9 F)	46 years	30 of 100 (Routine)
30 September 1948	Calgary Int'l A, CA	daily low min	-7.2 C (19.0 F)	1.6 C (2.9 F)	63 years	29 of 100 (Routine)
30 September 1948	Vita (Khanapur), IN	daily rain	85.6 mm (3.4 in)	36.6 mm (1.4 in)	10 years	29 of 100 (Routine)
30 September 1948	Hata, IN	daily rain	64.8 mm (2.6 in)	38.1 mm (1.5 in)	40 years	29 of 100 (Routine)
30 September 1948	Gariabund, IN	daily rain	87.4 mm (3.4 in)	41.2 mm (1.6 in)	25 years	28 of 100 (Routine)
30 September 1948	Cooperstown, US	daily high max	30.0 C (86.0 F)	4.4 C (7.9 F)	43 years	26 of 100 (Routine)
30 September 1948	Lisboa Geofisica, PT	daily high max	35.3 C (95.5 F)	5.2 C (9.4 F)	25 years	25 of 100 (Routine)
30 September 1948	Gardiner, US	daily high max	28.9 C (84.0 F)	2.2 C (4.0 F)	49 years	25 of 100 (Routine)
30 September 1948	Tbilisi, GE	daily high min	17.5 C (63.5 F)	0.2 C (0.4 F)	60 years	24 of 100 (Routine)
30 September 1948	Navanagar, IN	daily rain	25.4 mm (1.0 in)	20.3 mm (0.8 in)	38 years	24 of 100 (Routine)
30 September 1948	Mahasamund, IN	daily rain	61.5 mm (2.4 in)	33.6 mm (1.3 in)	22 years	24 of 100 (Routine)

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

1806 to 1948

Records set or tied on this calendar date in each year from 1806 to 1948. 1948 had 267 records.

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

Records on 09-30 in each year
Year	Records
1806	1
1813	1
1817	1
1819	2
1834	1
1841	1
1842	1
1847	1
1853	1
1854	1
1855	1
1861	1
1862	1
1866	1
1868	2
1869	3
1870	1
1874	1
1877	1
1878	1
1881	5
1883	2
1885	1
1886	3
1887	1
1888	4
1889	1
1892	2
1893	3
1894	8
1895	5
1896	2
1897	3
1898	3
1899	12
1900	4
1901	11
1902	7
1903	9
1904	14
1905	25
1906	14
1907	16
1908	18
1909	10
1910	5
1911	47
1912	47
1913	10
1914	33
1915	84
1916	209
1917	19
1918	45
1919	28
1920	71
1921	61
1922	71
1923	183
1924	243
1925	211
1926	194
1927	486
1928	560
1929	181
1930	110
1931	225
1932	363
1933	437
1934	398
1935	209
1936	432
1937	417
1938	428
1939	371
1940	316
1941	482
1942	405
1943	404
1944	369
1945	889
1946	320
1947	433
1948	267
1949	366
1950	731
1951	597
1952	504
1953	1,136
1954	1,059
1955	406
1956	350
1957	663
1958	442
1959	1,159
1960	161
1961	618
1962	202
1963	818
1964	332
1965	459
1966	592
1967	859
1968	449
1969	465
1970	334
1971	1,359
1972	676
1973	407
1974	742
1975	686
1976	775
1977	870
1978	399
1979	479
1980	832
1981	688
1982	806
1983	1,102
1984	1,267
1985	1,892
1986	1,805
1987	649
1988	453
1989	713
1990	665
1991	949
1992	980
1993	988
1994	816
1995	1,061
1996	1,396
1997	729
1998	1,206
1999	1,144
2000	887
2001	699
2002	677
2003	1,079
2004	573
2005	761
2006	617
2007	841
2008	585
2009	826
2010	1,059
2011	1,258
2012	637
2013	634
2014	529
2015	997
2016	746
2017	404
2018	717
2019	2,192
2020	554
2021	823
2022	563
2023	1,012
2024	948
2025	559
2026	523

Download the Data

Data for records on 1948-09-30: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	184
20 to 40	12
40 to 60	3
60 to 80	0
80 to 100	1