Trenton Average Weather by Day

Data and chart of the the average high and low temperature for every day of the year in Trenton, New Jersey, based on NOAA data.
Also see:
What's the hottest day of the year in Trenton?
On average, July 21 is the hottest day of the year Trenton, New Jersey. From 1991–2020, the average high temperature on July 21 was 86.7 °F and the average low was 66.7 °F.
What's the coldest day of the year in Trenton?
On average, January 30 is the coldest day of the year Trenton, New Jersey. From 1991–2020, the average high temperature on January 30 was 39.7 °F, and the average low was 23.3 °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 42.3 26.5
January 2 42.2 26.4
January 3 42.1 26.3
January 4 42.0 26.2
January 5 41.8 26.0
January 6 41.5 25.7
January 7 41.1 25.4
January 8 40.7 25.1
January 9 40.6 24.9
January 10 40.6 24.9
January 11 40.5 24.8
January 12 40.2 24.6
January 13 40.2 24.4
January 14 40.1 24.3
January 15 40.0 24.2
January 16 39.9 24.1
January 17 39.9 24.0
January 18 39.8 23.9
January 19 39.8 23.8
January 20 39.8 23.7
January 21 39.9 23.8
January 22 40.0 23.8
January 23 40.0 23.8
January 24 40.1 23.8
January 25 40.0 23.7
January 26 40.0 23.6
January 27 39.9 23.4
January 28 39.8 23.4
January 29 39.7 23.3
January 30 39.7 23.3
January 31 39.7 23.3
February 1 39.9 23.3
February 2 40.0 23.4
February 3 40.2 23.5
February 4 40.4 23.6
February 5 40.7 23.8
February 6 41.1 24.0
February 7 41.4 24.3
February 8 41.6 24.5
February 9 41.8 24.6
February 10 42.1 24.9
February 11 42.3 25.1
February 12 42.4 25.2
February 13 42.6 25.4
February 14 42.8 25.6
February 15 43.1 25.8
February 16 43.3 26.0
February 17 43.5 26.2
February 18 43.5 26.3
February 19 43.7 26.4
February 20 43.9 26.5
February 21 44.2 26.7
February 22 44.6 27.0
February 23 44.9 27.2
February 24 45.3 27.5
February 25 45.6 27.7
February 26 45.9 27.9
February 27 46.2 28.2
February 28 46.7 28.6
March 1 47.1 28.9
March 2 47.4 29.2
March 3 47.7 29.4
March 4 48.0 29.7
March 5 48.1 29.9
March 6 48.3 30.2
March 7 48.5 30.4
March 8 48.6 30.5
March 9 48.7 30.6
March 10 49.0 30.7
March 11 49.3 30.9
March 12 49.6 31.2
March 13 50.0 31.4
March 14 50.4 31.8
March 15 50.7 32.1
March 16 51.1 32.5
March 17 51.4 32.7
March 18 51.8 33.0
March 19 52.3 33.3
March 20 52.7 33.7
March 21 53.2 34.1
March 22 53.4 34.3
March 23 53.6 34.5
March 24 53.9 34.8
March 25 54.3 35.1
March 26 54.6 35.4
March 27 55.0 35.7
March 28 55.4 36.0
March 29 55.8 36.3
March 30 56.1 36.6
March 31 56.6 36.9
April 1 57.1 37.3
April 2 57.6 37.7
April 3 58.1 38.1
April 4 58.5 38.4
April 5 59.1 38.8
April 6 59.6 39.1
April 7 60.2 39.6
April 8 60.6 40.0
April 9 60.9 40.3
April 10 61.4 40.6
April 11 61.7 40.9
April 12 62.0 41.2
April 13 62.3 41.4
April 14 62.7 41.6
April 15 63.0 41.9
April 16 63.4 42.1
April 17 63.8 42.4
April 18 64.2 42.8
April 19 64.6 43.1
April 20 65.0 43.5
April 21 65.3 43.9
April 22 65.6 44.2
April 23 65.9 44.5
April 24 66.2 44.8
April 25 66.5 45.1
April 26 66.9 45.5
April 27 67.2 45.8
April 28 67.5 46.1
April 29 67.6 46.3
April 30 67.8 46.5
May 1 68.2 46.8
May 2 68.5 47.1
May 3 68.7 47.4
May 4 68.8 47.7
May 5 68.9 47.8
May 6 69.2 48.0
May 7 69.5 48.2
May 8 69.7 48.5
May 9 70.0 48.8
May 10 70.4 49.2
May 11 70.8 49.5
May 12 71.1 49.8
May 13 71.5 50.2
May 14 71.8 50.6
May 15 72.2 51.0
May 16 72.4 51.3
May 17 72.7 51.6
May 18 73.1 51.9
May 19 73.4 52.2
May 20 73.7 52.5
May 21 73.9 52.7
May 22 74.1 53.1
May 23 74.3 53.3
May 24 74.7 53.6
May 25 75.0 53.9
May 26 75.4 54.2
May 27 75.7 54.5
May 28 76.2 55.0
May 29 76.6 55.4
May 30 76.7 55.8
May 31 76.9 56.1
June 1 77.3 56.3
June 2 77.7 56.6
June 3 78.1 57.0
June 4 78.4 57.4
June 5 78.7 57.9
June 6 79.1 58.2
June 7 79.3 58.5
June 8 79.5 58.9
June 9 79.8 59.1
June 10 80.1 59.4
June 11 80.4 59.6
June 12 80.7 59.9
June 13 80.9 60.3
June 14 81.2 60.6
June 15 81.3 60.8
June 16 81.5 61.0
June 17 81.8 61.3
June 18 82.1 61.6
June 19 82.5 61.9
June 20 82.8 62.2
June 21 83.2 62.6
June 22 83.4 62.9
June 23 83.7 63.1
June 24 83.8 63.4
June 25 84.0 63.6
June 26 84.1 63.7
June 27 84.3 63.9
June 28 84.5 64.0
June 29 84.7 64.1
June 30 84.8 64.4
July 1 85.0 64.6
July 2 85.2 64.8
July 3 85.5 65.0
July 4 85.8 65.2
July 5 85.9 65.4
July 6 86.1 65.6
July 7 86.2 65.7
July 8 86.4 65.9
July 9 86.4 66.0
July 10 86.4 66.1
July 11 86.3 66.1
July 12 86.4 66.2
July 13 86.4 66.3
July 14 86.4 66.3
July 15 86.5 66.4
July 16 86.5 66.5
July 17 86.5 66.5
July 18 86.6 66.6
July 19 86.6 66.6
July 20 86.7 66.7
July 21 86.7 66.7
July 22 86.6 66.7
July 23 86.5 66.6
July 24 86.4 66.5
July 25 86.4 66.5
July 26 86.3 66.5
July 27 86.4 66.5
July 28 86.3 66.5
July 29 86.3 66.5
July 30 86.2 66.5
July 31 86.0 66.4
August 1 85.8 66.4
August 2 85.7 66.3
August 3 85.6 66.2
August 4 85.5 66.1
August 5 85.4 66.1
August 6 85.2 65.9
August 7 85.1 65.8
August 8 85.1 65.6
August 9 84.9 65.5
August 10 84.8 65.3
August 11 84.7 65.2
August 12 84.6 65.0
August 13 84.6 64.9
August 14 84.5 64.9
August 15 84.4 64.8
August 16 84.3 64.6
August 17 84.1 64.5
August 18 83.9 64.3
August 19 83.7 64.0
August 20 83.5 63.9
August 21 83.5 63.9
August 22 83.4 63.8
August 23 83.2 63.6
August 24 83.1 63.4
August 25 83.0 63.2
August 26 82.9 63.1
August 27 82.7 62.9
August 28 82.5 62.6
August 29 82.3 62.4
August 30 82.1 62.1
August 31 81.9 61.9
September 1 81.6 61.6
September 2 81.4 61.3
September 3 81.1 61.0
September 4 80.9 60.8
September 5 80.6 60.4
September 6 80.4 60.1
September 7 80.2 59.9
September 8 80.0 59.7
September 9 79.7 59.5
September 10 79.4 59.1
September 11 79.0 58.8
September 12 78.7 58.5
September 13 78.5 58.3
September 14 78.2 58.0
September 15 77.7 57.6
September 16 77.3 57.2
September 17 76.9 56.8
September 18 76.6 56.4
September 19 76.2 56.0
September 20 75.8 55.6
September 21 75.5 55.3
September 22 75.0 54.9
September 23 74.6 54.5
September 24 74.3 54.1
September 25 74.0 53.7
September 26 73.7 53.4
September 27 73.3 53.1
September 28 72.9 52.7
September 29 72.4 52.3
September 30 72.1 51.9
October 1 71.7 51.5
October 2 71.3 51.2
October 3 70.9 50.8
October 4 70.6 50.4
October 5 70.2 50.1
October 6 69.7 49.7
October 7 69.3 49.3
October 8 68.9 48.8
October 9 68.5 48.5
October 10 68.2 48.1
October 11 67.8 47.7
October 12 67.2 47.2
October 13 66.8 46.8
October 14 66.4 46.4
October 15 66.1 46.1
October 16 65.7 45.8
October 17 65.4 45.5
October 18 65.0 45.1
October 19 64.6 44.8
October 20 64.3 44.4
October 21 63.9 44.1
October 22 63.5 43.7
October 23 63.1 43.4
October 24 62.6 43.0
October 25 62.1 42.5
October 26 61.8 42.0
October 27 61.5 41.7
October 28 61.2 41.4
October 29 60.7 41.0
October 30 60.3 40.6
October 31 59.9 40.3
November 1 59.7 40.1
November 2 59.3 39.8
November 3 58.9 39.5
November 4 58.5 39.2
November 5 58.0 38.9
November 6 57.7 38.6
November 7 57.4 38.3
November 8 57.0 38.1
November 9 56.6 37.7
November 10 56.3 37.4
November 11 55.9 37.0
November 12 55.7 36.8
November 13 55.5 36.6
November 14 55.3 36.4
November 15 55.0 36.2
November 16 54.6 35.9
November 17 54.4 35.7
November 18 53.9 35.4
November 19 53.7 35.2
November 20 53.3 35.0
November 21 53.0 34.7
November 22 52.6 34.5
November 23 52.2 34.3
November 24 51.7 34.0
November 25 51.2 33.7
November 26 50.8 33.4
November 27 50.5 33.2
November 28 50.2 33.0
November 29 49.8 32.7
November 30 49.4 32.5
December 1 49.1 32.3
December 2 48.8 32.1
December 3 48.6 32.0
December 4 48.2 31.7
December 5 47.8 31.4
December 6 47.4 31.1
December 7 47.1 30.8
December 8 47.0 30.7
December 9 46.8 30.6
December 10 46.6 30.5
December 11 46.2 30.2
December 12 45.8 29.9
December 13 45.5 29.6
December 14 45.2 29.4
December 15 44.9 29.1
December 16 44.6 28.9
December 17 44.3 28.7
December 18 44.1 28.5
December 19 43.9 28.2
December 20 43.7 28.1
December 21 43.6 27.9
December 22 43.4 27.8
December 23 43.4 27.7
December 24 43.2 27.6
December 25 43.0 27.5
December 26 42.9 27.3
December 27 42.7 27.2
December 28 42.6 27.0
December 29 42.6 27.0
December 30 42.6 26.9
December 31 42.5 26.7
Weather Station Details
Years Station Coordinates
1999–2024 Trenton Mercer County Airport location
1977–1998 Trenton State College location
1913–1976 Trenton location
1865–1913 Trenton 2 location
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