Wilmington Average Weather by Day

Data and chart of the the average high and low temperature for every day of the year in Wilmington, Delaware, based on NOAA data.
Also see:
What's the hottest day of the year in Wilmington?
On average, July 21 is the hottest day of the year Wilmington, Delaware. From 1991–2020, the average high temperature on July 21 was 86.8 °F and the average low was 68.5 °F.
What's the coldest day of the year in Wilmington?
On average, January 30 is the coldest day of the year Wilmington, Delaware. From 1991–2020, the average high temperature on January 30 was 40.8 °F, and the average low was 24.4 °F.
Average Temperature by Day
  • Average temperatures from 1991–2020. Daily averages are a mean of the period from 14 days before to 14 days after, inclusive.
Day Average (°F)
High Low
January 1 43.4 27.8
January 2 43.3 27.7
January 3 43.1 27.6
January 4 43.0 27.5
January 5 42.8 27.3
January 6 42.5 27.1
January 7 42.2 26.7
January 8 41.8 26.4
January 9 41.7 26.3
January 10 41.7 26.3
January 11 41.6 26.2
January 12 41.4 26.0
January 13 41.3 25.8
January 14 41.2 25.7
January 15 41.1 25.5
January 16 41.1 25.4
January 17 41.0 25.3
January 18 41.0 25.2
January 19 40.9 25.1
January 20 40.9 25.0
January 21 40.9 25.0
January 22 41.0 25.0
January 23 41.1 25.0
January 24 41.1 24.9
January 25 41.1 25.0
January 26 41.1 24.8
January 27 41.0 24.6
January 28 40.8 24.5
January 29 40.8 24.4
January 30 40.8 24.4
January 31 40.8 24.4
February 1 41.0 24.5
February 2 41.1 24.5
February 3 41.2 24.6
February 4 41.4 24.7
February 5 41.7 24.9
February 6 42.1 25.2
February 7 42.4 25.3
February 8 42.6 25.5
February 9 42.8 25.7
February 10 43.1 25.9
February 11 43.2 26.1
February 12 43.3 26.3
February 13 43.6 26.5
February 14 43.8 26.7
February 15 44.0 26.9
February 16 44.3 27.1
February 17 44.4 27.3
February 18 44.4 27.4
February 19 44.6 27.5
February 20 44.8 27.6
February 21 45.2 27.8
February 22 45.5 28.1
February 23 45.9 28.3
February 24 46.2 28.6
February 25 46.6 28.8
February 26 46.8 29.0
February 27 47.2 29.3
February 28 47.7 29.6
March 1 48.0 29.9
March 2 48.3 30.2
March 3 48.7 30.4
March 4 49.0 30.7
March 5 49.2 30.9
March 6 49.4 31.2
March 7 49.6 31.4
March 8 49.7 31.6
March 9 49.9 31.7
March 10 50.1 31.9
March 11 50.5 32.1
March 12 50.7 32.3
March 13 51.2 32.6
March 14 51.5 33.0
March 15 51.9 33.4
March 16 52.3 33.6
March 17 52.6 33.8
March 18 53.0 34.2
March 19 53.5 34.6
March 20 53.9 34.9
March 21 54.4 35.3
March 22 54.6 35.6
March 23 54.8 35.8
March 24 55.2 36.1
March 25 55.5 36.4
March 26 55.8 36.7
March 27 56.2 37.0
March 28 56.6 37.3
March 29 57.0 37.6
March 30 57.3 37.9
March 31 57.7 38.3
April 1 58.2 38.7
April 2 58.7 39.1
April 3 59.2 39.4
April 4 59.6 39.7
April 5 60.2 40.1
April 6 60.7 40.5
April 7 61.2 40.9
April 8 61.6 41.3
April 9 61.9 41.7
April 10 62.3 42.0
April 11 62.7 42.3
April 12 63.0 42.6
April 13 63.2 42.7
April 14 63.5 43.0
April 15 63.9 43.2
April 16 64.2 43.4
April 17 64.6 43.8
April 18 65.1 44.2
April 19 65.4 44.5
April 20 65.8 44.9
April 21 66.1 45.3
April 22 66.4 45.6
April 23 66.6 45.9
April 24 66.9 46.3
April 25 67.2 46.6
April 26 67.6 47.0
April 27 67.9 47.3
April 28 68.2 47.6
April 29 68.4 47.9
April 30 68.6 48.0
May 1 68.9 48.3
May 2 69.1 48.7
May 3 69.4 49.0
May 4 69.5 49.3
May 5 69.7 49.5
May 6 69.9 49.6
May 7 70.2 49.8
May 8 70.4 50.1
May 9 70.8 50.5
May 10 71.1 50.8
May 11 71.5 51.2
May 12 71.8 51.6
May 13 72.2 52.0
May 14 72.5 52.4
May 15 72.9 52.8
May 16 73.1 53.2
May 17 73.4 53.5
May 18 73.8 53.8
May 19 74.1 54.1
May 20 74.4 54.4
May 21 74.6 54.6
May 22 74.8 55.0
May 23 75.1 55.3
May 24 75.4 55.5
May 25 75.7 55.8
May 26 76.1 56.1
May 27 76.5 56.5
May 28 76.9 56.9
May 29 77.3 57.4
May 30 77.5 57.8
May 31 77.7 58.1
June 1 78.1 58.4
June 2 78.5 58.7
June 3 78.8 59.1
June 4 79.1 59.5
June 5 79.5 59.9
June 6 79.8 60.3
June 7 80.1 60.6
June 8 80.3 60.9
June 9 80.5 61.2
June 10 80.8 61.4
June 11 81.0 61.7
June 12 81.4 61.9
June 13 81.6 62.2
June 14 81.8 62.5
June 15 81.9 62.7
June 16 82.1 62.9
June 17 82.3 63.2
June 18 82.6 63.4
June 19 83.0 63.7
June 20 83.3 64.0
June 21 83.6 64.4
June 22 83.9 64.7
June 23 84.1 65.0
June 24 84.2 65.2
June 25 84.4 65.4
June 26 84.5 65.5
June 27 84.7 65.6
June 28 84.8 65.7
June 29 85.0 65.9
June 30 85.1 66.1
July 1 85.4 66.3
July 2 85.5 66.5
July 3 85.8 66.6
July 4 86.0 66.8
July 5 86.2 67.0
July 6 86.3 67.2
July 7 86.4 67.3
July 8 86.6 67.5
July 9 86.6 67.7
July 10 86.6 67.8
July 11 86.5 67.8
July 12 86.6 67.9
July 13 86.6 68.0
July 14 86.6 68.0
July 15 86.7 68.1
July 16 86.7 68.2
July 17 86.7 68.3
July 18 86.7 68.4
July 19 86.8 68.4
July 20 86.8 68.4
July 21 86.8 68.5
July 22 86.7 68.4
July 23 86.6 68.3
July 24 86.5 68.3
July 25 86.5 68.3
July 26 86.5 68.3
July 27 86.5 68.3
July 28 86.4 68.3
July 29 86.4 68.3
July 30 86.3 68.3
July 31 86.2 68.2
August 1 86.0 68.2
August 2 85.8 68.1
August 3 85.8 68.0
August 4 85.7 67.9
August 5 85.5 67.9
August 6 85.4 67.7
August 7 85.3 67.6
August 8 85.3 67.4
August 9 85.2 67.3
August 10 85.1 67.1
August 11 85.0 66.9
August 12 84.9 66.8
August 13 84.9 66.7
August 14 84.8 66.7
August 15 84.7 66.6
August 16 84.6 66.4
August 17 84.5 66.3
August 18 84.4 66.1
August 19 84.2 65.9
August 20 84.1 65.8
August 21 84.1 65.7
August 22 84.0 65.6
August 23 83.8 65.4
August 24 83.7 65.3
August 25 83.6 65.1
August 26 83.5 65.0
August 27 83.3 64.8
August 28 83.1 64.5
August 29 82.9 64.2
August 30 82.8 64.0
August 31 82.6 63.8
September 1 82.3 63.5
September 2 82.1 63.2
September 3 81.9 62.9
September 4 81.7 62.6
September 5 81.4 62.3
September 6 81.2 62.0
September 7 81.0 61.8
September 8 80.8 61.6
September 9 80.5 61.3
September 10 80.2 61.0
September 11 79.8 60.6
September 12 79.5 60.3
September 13 79.3 60.1
September 14 79.0 59.8
September 15 78.6 59.4
September 16 78.2 59.0
September 17 77.8 58.5
September 18 77.4 58.1
September 19 77.0 57.7
September 20 76.7 57.4
September 21 76.4 57.1
September 22 76.0 56.6
September 23 75.6 56.2
September 24 75.2 55.7
September 25 74.9 55.4
September 26 74.6 55.1
September 27 74.3 54.8
September 28 73.9 54.4
September 29 73.4 53.9
September 30 73.1 53.6
October 1 72.7 53.2
October 2 72.4 52.8
October 3 71.9 52.4
October 4 71.6 52.0
October 5 71.2 51.6
October 6 70.7 51.3
October 7 70.4 50.8
October 8 69.9 50.4
October 9 69.6 50.0
October 10 69.2 49.6
October 11 68.8 49.1
October 12 68.3 48.7
October 13 67.9 48.3
October 14 67.5 47.9
October 15 67.2 47.5
October 16 66.8 47.2
October 17 66.5 46.8
October 18 66.1 46.5
October 19 65.7 46.2
October 20 65.4 45.8
October 21 64.9 45.4
October 22 64.5 45.0
October 23 64.2 44.7
October 24 63.7 44.2
October 25 63.2 43.7
October 26 62.8 43.3
October 27 62.5 42.9
October 28 62.2 42.6
October 29 61.7 42.1
October 30 61.3 41.7
October 31 60.9 41.4
November 1 60.6 41.1
November 2 60.3 40.9
November 3 59.9 40.6
November 4 59.5 40.2
November 5 59.0 39.9
November 6 58.7 39.7
November 7 58.4 39.4
November 8 57.9 39.1
November 9 57.5 38.8
November 10 57.2 38.4
November 11 56.8 38.0
November 12 56.6 37.8
November 13 56.3 37.6
November 14 56.1 37.4
November 15 55.8 37.2
November 16 55.5 37.0
November 17 55.2 36.7
November 18 54.8 36.5
November 19 54.5 36.2
November 20 54.2 36.0
November 21 53.8 35.8
November 22 53.4 35.6
November 23 53.0 35.3
November 24 52.6 35.0
November 25 52.1 34.7
November 26 51.7 34.5
November 27 51.4 34.3
November 28 51.1 34.1
November 29 50.8 33.9
November 30 50.4 33.6
December 1 50.1 33.4
December 2 49.8 33.2
December 3 49.5 33.1
December 4 49.2 32.9
December 5 48.8 32.5
December 6 48.4 32.2
December 7 48.2 32.0
December 8 48.0 31.8
December 9 47.9 31.7
December 10 47.6 31.6
December 11 47.3 31.3
December 12 46.9 31.0
December 13 46.5 30.7
December 14 46.3 30.5
December 15 46.0 30.2
December 16 45.6 30.0
December 17 45.4 29.8
December 18 45.2 29.6
December 19 44.9 29.4
December 20 44.8 29.2
December 21 44.7 29.1
December 22 44.6 29.0
December 23 44.5 28.9
December 24 44.4 28.8
December 25 44.1 28.6
December 26 44.0 28.5
December 27 43.8 28.3
December 28 43.7 28.2
December 29 43.7 28.2
December 30 43.7 28.1
December 31 43.6 28.0
Weather Station Details
Years Station Coordinates
1948–2024 New Castle Airport location
1932–1947 Wilmington Porter Research location
1894–1931 Wilmington City Hall location
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