Weather Records on 15 March 1940

340 weather records were set or tied worldwide on 15 March 1940. Highest significance: Ai-Petri, UA.

Key Facts for 15 March 1940

On 15 March 1940, 340 weather records were set or tied at long-record stations worldwide.
86 were record highs and 95 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 11 monthly and 329 daily.
Ai-Petri set a daily record precipitation of 60.7 mm (2.4 in) on 15 March 1940.
Across 161 earlier years (1810 to 2026) the same calendar date averaged 487 records.

Record Map

340 stations

340 station records on 15 March 1940 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 March 1940: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ai-Petri	Ukraine	Record daily precipitation	60.7 mm (2.4 in)	53 of 100 (Notable)
Boonton 1 SE	United States	Record daily precipitation	53.3 mm (2.1 in)	51 of 100 (Notable)
Matamoras	United States	Record daily precipitation	52.8 mm (2.1 in)	50 of 100 (Notable)
Quakertown	United States	Record daily precipitation	43.7 mm (1.7 in)	49 of 100 (Notable)
Shawinigan	Canada	Record daily snowfall	39.4 cm (15.5 in)	48 of 100 (Notable)
Bainbridge 2 E	United States	Record daily precipitation	36.8 mm (1.4 in)	48 of 100 (Notable)
Yalta	Ukraine	Record daily precipitation	26.6 mm (1.0 in)	46 of 100 (Notable)
Mbabane	Swaziland	Record daily precipitation	111.8 mm (4.4 in)	44 of 100 (Notable)
De Ruyter 4 N	United States	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Cornwall	United States	Record daily precipitation	42.4 mm (1.7 in)	41 of 100 (Notable)
Rockwell City	United States	Record snow depth	101.6 cm (40.0 in)	39 of 100 (Notable)
Gloversville	United States	Record daily precipitation	59.7 mm (2.4 in)	37 of 100 (Notable)
Doylestown	United States	Record daily precipitation	45.0 mm (1.8 in)	37 of 100 (Notable)
Lake Konomoc	United States	Record daily precipitation	55.9 mm (2.2 in)	35 of 100 (Notable)
Great Falls	United States	Record daily precipitation	36.1 mm (1.4 in)	35 of 100 (Notable)
Charlotteburg Rsvr	United States	Record daily precipitation	67.1 mm (2.6 in)	34 of 100 (Routine)
Gabriels	United States	Record daily precipitation	41.9 mm (1.6 in)	34 of 100 (Routine)
Pottsville	United States	Record daily precipitation	47.2 mm (1.9 in)	33 of 100 (Routine)
Shawinigan	Canada	Record daily precipitation	39.4 mm (1.6 in)	32 of 100 (Routine)
Little Falls	United States	Record daily precipitation	61.2 mm (2.4 in)	32 of 100 (Routine)
Hamburg Fuhlsbuettel	Germany	Record low minimum temperature	-10.0 C (14.0 F)	30 of 100 (Routine)
Oorschot	South Africa	Record daily precipitation	55.9 mm (2.2 in)	30 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record low minimum temperature	-23.1 C (-9.6 F)	30 of 100 (Routine)
North Lake	United States	Record daily precipitation	47.8 mm (1.9 in)	30 of 100 (Routine)
Fredericton Unb	Canada	Record daily snowfall	14.5 cm (5.7 in)	28 of 100 (Routine)
Tortosa - Observatorio del Ebr	Spain	Record high minimum temperature	14.4 C (57.9 F)	28 of 100 (Routine)
Dover	United States	Record daily precipitation	71.9 mm (2.8 in)	28 of 100 (Routine)
Elizabeth	United States	Record daily precipitation	39.4 mm (1.6 in)	28 of 100 (Routine)
Moorestown 4 E	United States	Record daily precipitation	41.1 mm (1.6 in)	28 of 100 (Routine)
Jim Thorpe	United States	Record daily precipitation	52.8 mm (2.1 in)	28 of 100 (Routine)
Clontarf	Canada	Record daily snowfall	11.4 cm (4.5 in)	27 of 100 (Routine)
Rangia	India	Record daily precipitation	26.7 mm (1.1 in)	27 of 100 (Routine)
Storrs	United States	Record daily precipitation	45.7 mm (1.8 in)	27 of 100 (Routine)
Webster City	United States	Record snow depth	50.8 cm (20.0 in)	27 of 100 (Routine)
Cortland	United States	Record daily precipitation	28.2 mm (1.1 in)	27 of 100 (Routine)
Fayetteville (Pwc)	United States	Record daily precipitation	27.9 mm (1.1 in)	27 of 100 (Routine)
Mt Pocono 2 N	United States	Record daily precipitation	76.2 mm (3.0 in)	27 of 100 (Routine)
Pottstown	United States	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Bjuraker	Sweden	Record low maximum temperature	-9.1 C (15.6 F)	26 of 100 (Routine)
Logan 1 WNW	United States	Record snow depth	50.8 cm (20.0 in)	26 of 100 (Routine)
Hope Little Mountain	Canada	Record daily precipitation	30.2 mm (1.2 in)	25 of 100 (Routine)
Soltau	Germany	Record snow depth	18.0 cm (7.1 in)	25 of 100 (Routine)
Altentreptow	Germany	Record snow depth	12.0 cm (4.7 in)	24 of 100 (Routine)
Heppner	United States	Record high minimum temperature	10.0 C (50.0 F)	24 of 100 (Routine)
Orillia	Canada	Record daily snowfall	8.9 cm (3.5 in)	23 of 100 (Routine)
St. Petersburg	Russia	Record low minimum temperature	-22.4 C (-8.3 F)	23 of 100 (Routine)
Tarnaby	Sweden	Record low minimum temperature	-35.0 C (-31.0 F)	23 of 100 (Routine)
Rumford	United States	Record daily precipitation	32.3 mm (1.3 in)	23 of 100 (Routine)
Takoma Park # 1	United States	Record daily precipitation	37.3 mm (1.5 in)	23 of 100 (Routine)
Bedford Hills	United States	Record daily precipitation	61.0 mm (2.4 in)	23 of 100 (Routine)
Oneonta 1 S	United States	Record daily precipitation	30.0 mm (1.2 in)	23 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record high minimum temperature	6.1 C (43.0 F)	23 of 100 (Routine)
Cavendish	United States	Record daily precipitation	36.3 mm (1.4 in)	23 of 100 (Routine)
Tartu	Estonia	Record low maximum temperature	-9.8 C (14.4 F)	22 of 100 (Routine)
Lisboa Geofisica	Portugal	Record high minimum temperature	15.3 C (59.5 F)	22 of 100 (Routine)
Cream Hill	United States	Record daily precipitation	44.7 mm (1.8 in)	22 of 100 (Routine)
Sherburne	United States	Record daily precipitation	45.5 mm (1.8 in)	22 of 100 (Routine)
Lebanon 3 W	United States	Record daily precipitation	47.5 mm (1.9 in)	22 of 100 (Routine)
Kellerberrin	Australia	Record high minimum temperature	25.7 C (78.3 F)	21 of 100 (Routine)
Tartu-Toravere	Estonia	Record low maximum temperature	-9.8 C (14.4 F)	21 of 100 (Routine)

Counts by Type and Timescale

340 records

Records set or tied on 15 March 1940 by type: Highest daily maximum 20, Lowest daily maximum 16, Highest daily minimum 66, Lowest daily minimum 79, Heaviest daily rainfall 131, Heaviest daily snowfall 12, Deepest snow cover 16.

Records on 15 March 1940 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	16
Highest daily minimum	66
Lowest daily minimum	79
Heaviest daily rainfall	131
Heaviest daily snowfall	12
Deepest snow cover	16

Records on 15 March 1940 by timescale: all-time 0, monthly 11, daily 329.

How Much Records Were Beaten By

273 broken records

Margins by which the 273 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 1016.0. Ties are not counted.

Top 20 by Significance

15 March 1940

Top 20 records on 15 March 1940 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 March 1940	Ai-Petri, UA	daily rain	60.7 mm (2.4 in)	46.5 mm (1.8 in)	31 years	53 of 100 (Notable)
15 March 1940	Boonton 1 SE, US	daily rain	53.3 mm (2.1 in)	40.9 mm (1.6 in)	29 years	51 of 100 (Notable)
15 March 1940	Matamoras, US	daily rain	52.8 mm (2.1 in)	37.8 mm (1.5 in)	29 years	50 of 100 (Notable)
15 March 1940	Quakertown, US	daily rain	43.7 mm (1.7 in)	28.7 mm (1.1 in)	49 years	49 of 100 (Notable)
15 March 1940	Shawinigan, CA	monthly snowfall	39.4 cm (15.5 in)	14.0 cm (5.5 in)	36 years	48 of 100 (Notable)
15 March 1940	Bainbridge 2 E, US	daily rain	36.8 mm (1.4 in)	24.1 mm (0.9 in)	24 years	48 of 100 (Notable)
15 March 1940	Yalta, UA	daily rain	26.6 mm (1.0 in)	20.4 mm (0.8 in)	31 years	46 of 100 (Notable)
15 March 1940	Mbabane, SZ	daily rain	111.8 mm (4.4 in)	67.6 mm (2.7 in)	14 years	44 of 100 (Notable)
15 March 1940	De Ruyter 4 N, US	daily rain	44.5 mm (1.8 in)	21.6 mm (0.9 in)	24 years	41 of 100 (Notable)
15 March 1940	Cornwall, US	daily rain	42.4 mm (1.7 in)	23.3 mm (0.9 in)	28 years	41 of 100 (Notable)
15 March 1940	Rockwell City, US	daily snow depth	101.6 cm (40.0 in)	101.6 cm (40.0 in)	45 years	39 of 100 (Notable)
15 March 1940	Gloversville, US	monthly rain	59.7 mm (2.4 in)	10.2 mm (0.4 in)	36 years	37 of 100 (Notable)
15 March 1940	Doylestown, US	daily rain	45.0 mm (1.8 in)	21.9 mm (0.9 in)	34 years	37 of 100 (Notable)
15 March 1940	Lake Konomoc, US	daily rain	55.9 mm (2.2 in)	32.8 mm (1.3 in)	29 years	35 of 100 (Notable)
15 March 1940	Great Falls, US	daily rain	36.1 mm (1.4 in)	17.8 mm (0.7 in)	34 years	35 of 100 (Notable)
15 March 1940	Charlotteburg Rsvr, US	daily rain	67.1 mm (2.6 in)	25.7 mm (1.0 in)	28 years	34 of 100 (Routine)
15 March 1940	Gabriels, US	daily rain	41.9 mm (1.6 in)	16.5 mm (0.6 in)	28 years	34 of 100 (Routine)
15 March 1940	Pottsville, US	daily rain	47.2 mm (1.9 in)	21.3 mm (0.8 in)	34 years	33 of 100 (Routine)
15 March 1940	Shawinigan, CA	daily rain	39.4 mm (1.6 in)	14.0 mm (0.6 in)	28 years	32 of 100 (Routine)
15 March 1940	Little Falls, US	daily rain	61.2 mm (2.4 in)	23.6 mm (0.9 in)	28 years	32 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

1810 to 1940

Records set or tied on this calendar date in each year from 1810 to 1940. 1940 had 340 records.

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

Records on 03-15 in each year
Year	Records
1810	1
1813	1
1825	1
1826	1
1828	1
1835	1
1836	2
1839	1
1840	1
1845	3
1846	1
1850	1
1852	2
1854	1
1859	3
1863	1
1867	1
1869	1
1878	1
1882	3
1883	1
1884	3
1886	1
1887	1
1888	3
1889	3
1890	3
1891	5
1892	6
1893	5
1894	1
1895	4
1896	5
1898	3
1899	5
1900	12
1901	11
1902	14
1903	9
1904	6
1905	14
1906	36
1907	16
1908	43
1909	13
1910	23
1911	27
1912	51
1913	79
1914	32
1915	11
1916	34
1917	36
1918	81
1919	40
1920	43
1921	140
1922	39
1923	134
1924	145
1925	72
1926	169
1927	332
1928	193
1929	267
1930	240
1931	122
1932	610
1933	167
1934	298
1935	617
1936	298
1937	711
1938	505
1939	336
1940	340
1941	259
1942	399
1943	639
1944	622
1945	895
1946	915
1947	374
1948	198
1949	409
1950	249
1951	334
1952	358
1953	298
1954	340
1955	419
1956	534
1957	485
1958	431
1959	348
1960	972
1961	430
1962	585
1963	297
1964	411
1965	174
1966	893
1967	831
1968	545
1969	933
1970	541
1971	772
1972	814
1973	1,074
1974	439
1975	713
1976	220
1977	787
1978	566
1979	997
1980	503
1981	799
1982	997
1983	844
1984	638
1985	519
1986	771
1987	687
1988	1,599
1989	1,221
1990	2,255
1991	852
1992	1,131
1993	3,353
1994	1,405
1995	1,372
1996	706
1997	1,500
1998	847
1999	1,269
2000	458
2001	930
2002	1,317
2003	1,157
2004	1,046
2005	1,099
2006	688
2007	1,420
2008	903
2009	744
2010	675
2011	730
2012	2,297
2013	1,486
2014	397
2015	1,573
2016	948
2017	1,497
2018	538
2019	861
2020	1,128
2021	916
2022	491
2023	768
2024	1,401
2025	1,162
2026	877

Download the Data

Data for records on 1940-03-15: 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 200	269
200 to 400	1
400 to 600	2
600 to 800	0
800 to 1000	0
1000 to 1200	1