Wilmington, DE: records

4 October 2026: The hottest day on record in Wilmington, DE: 107°F on Wednesday 7 August 1918.

The record begins: 1894

All-time records

Hottest day: 107°F; 7 August 1918
Coldest night: -15°F; 9 February 1934
Wettest day: 8.29 in; 16 September 1999
Warmest night: 84°F; 7 August 1918
Coldest day: 4°F; 19 January 1994, 30 December 1917

Daily records by decade

New daily records set in Wilmington, DE by decade since the 1940s: the most record highs, 98, came in the 1950s; the most record lows, 62, in the 1960s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1890s	0	0	6
1900s	0	0	10
1910s	0	0	10
1920s	0	0	10
1930s	0	0	10
1940s	58	53	10
1950s	98	47	10
1960s	47	62	10
1970s	45	46	10
1980s	48	52	10
1990s	52	12	10
2000s	32	10	10
2010s	40	11	10
2020s	25	0	7

Records by month

Month	Highest	Lowest	Wettest day
January	75°F 26 January 1950	-14°F 21 January 1985, 22 January 1984	2.60 in 3 January 1936, 22 January 1902
February	78°F 21 February 2018, 24 February 1985, 25 February 1930	-15°F 9 February 1934	2.79 in 20 February 1924
March	86°F 30 March 1998, 21 March 1948	2°F 10 March 1984	3.21 in 21 March 2000
April	97°F 18 April 1896, 17 April 1896	11°F 1 April 1923	4.36 in 15 April 2007
May	98°F 30 May 1895, 10 May 1895	30°F 1 May 1978	4.05 in 20 May 1894
June	102°F 24 June 1894	40°F 1 June 1945	4.77 in 27 June 1938
July	103°F 2 July 2026, 7 July 2010, 6 July 2010 and 1 more	48°F 1 July 1988	6.63 in 5 July 1989
August	107°F 7 August 1918	43°F 29 August 1982	6.42 in 1 August 1945
September	100°F 11 September 1983, 3 September 1953, 2 September 1953	32°F 27 September 1940	8.29 in 16 September 1999
October	98°F 2 October 2019	23°F 28 October 1936	3.79 in 29 October 2012
November	85°F 1 November 1950	11°F 29 November 1930, 30 November 1929	3.33 in 17 November 1935
December	75°F 4 December 1998	-7°F 25 December 1983, 30 December 1917	3.55 in 30 December 1901

Streaks, months and years

Longest heat streak	16 days	3 August to 18 August 1895	A high of 90°F or above
Longest cold streak	15 days	5 February to 19 February 1979	A high of 32°F or below
Wettest month	14.91 in	August 1911
Driest month	a trace	October 2024
Wettest year	61.37 in	2018
Driest year	24.90 in	1965

Every record in words

The coldest night on record in Wilmington, DE: a low of -15°F on Friday 9 February 1934.
The wettest day on record in Wilmington, DE: 8.29 in on Thursday 16 September 1999.
The warmest night on record in Wilmington, DE: a low of 84°F on Wednesday 7 August 1918.
The coldest day on record in Wilmington, DE: a high of 4°F on Wednesday 19 January 1994 and Sunday 30 December 1917.
The longest run of days with a high of 90°F or above in Wilmington, DE: 16 days, from Saturday 3 August to Sunday 18 August 1895.
The longest run of days with a high of 32°F or below in Wilmington, DE: 15 days, from Monday 5 February to Monday 19 February 1979.
The wettest month on record in Wilmington, DE: August 1911, with 14.91 in of precipitation.
The driest month on record in Wilmington, DE: October 2024, with a trace of precipitation.
The wettest year on record in Wilmington, DE: 2018, with 61.37 in of precipitation.
The driest year on record in Wilmington, DE: 1965, with 24.90 in of precipitation.

Wilmington, DE the day's answers