Temperatures

PETERBOROUGH MEAN MONTHLY TEMPERATURES IN SINCE JAN. 2010

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HIGHLIGHTS

  1. From January 2010 to April 2025, more than two-thirds (71%) were warmer than the 1971-2000 normal. If the climate was stable, we would expect roughly an even split between warmer and cooler months over such a long period.
  2. From April 2020 through April 2025— three-quarters (75%) were warmer than average.
  3. According to the CBC Climate Dashboard – https://newsinteractives.cbc.ca/features/2023/climate-dashboard/ – the average temperature for the 365 days from May 10, 2024 to May 10, 2025 was 7.2 C. This is 1.3 C above average.
  4. According to “Climate Change Research Report CCRR-44” by the Ontario Ministry of Natural Resources and Forestry (2015), winter temperatures in the Great Lakes Basin region, which includes the Kawarthas, are projected to increase, on average, by 2.5 to 2.8 C in the 2020s, 3.5 to 5.3 C by the 2050s, and 3.5 to 8.6 C by the 2080s. Summer temperatures are projected to increase, on average by 2.0 to 2.1 C in the 2020s, 2.6 to 4.4 C by the 2050s, and 2.7 to 7.5 C by the 2080s. Winter warming is likely to exceed summer warming.
  5. The CBC Climate Dashboard reports that if we keep developing a fossil fuel-based economy (high-emission scenario), the average annual temperature in Peterborough is likely to increase by 4.9 C to 8.4 C by the end of the century, compared to the average from 1981-2010. If we maintain current development patterns (medium-emission scenario), the temperature is likely to rise by 2.7 C to 5.1 C. If governments make a major shift now toward sustainable development (low-emission scenario), the increase is likely to be between 1.6 C to 4 C. Winter warming is likely to exceed summer warming.

Additional sources: For normal monthly temperatures, I used Environment Canada:Canadian Climate Normals 1971-2000 http://tinyurl.com/3cvh8jrt For recorded monthly temperatures, I use Daily Data Report for Peterborough Station A http://tinyurl.com/23yzzt37 Note that records for Station A are only available as of October, 2010. Prior to that, I have had to use the data from the Trent University Station on the edge of Peterborough.

Month Normal (1971-2000)RecordedDifference
April 20255.7 C6.5 C0.8C warmer
March 2025-2.0 C-0.5 C 1.5C warmer
Feb. 2025-7.7 C-8.6 C0.9 C cooler
Jan. 2025-8.9 C-8.3 C0.6C warmer
Dec. 2024-5.3 C-3.8 C (as of Dec. 22)1.5 C warmer
Nov. 20241.7 C4.1 C2.4C warmer
Oct. 20247.3 C8.7 C1.4C warmer
Sept. 202413.5 C16.0 C 2.5C warmer
August 202418.2 C18.6 C0.4C warmer
July 202419.4 C20.8 C1.4C warmer
June 202416.8 C17.8 C 1.0C warmer
May 202412.4 C14.3 C1.9C warmer
April 20245.7 C7.1 C1.4C warmer
March 2024-2.0 C2.3 C 4.3C warmer
Feb. 2024-7.7 C-2.4 C5.3C warmer
Jan. 2024-8.9 C-3.7 C5.2C warmer
Dec. 2023-5.3 C0.4 C 5.7 C warmer
Nov. 20231.7 C1.5 C0.2C cooler
Oct. 20237.3 C10.6 C3.3C warmer
Sept. 202313.5 C15.5 C2.0 C warmer
August 202318.2 C17.9 C0.3 C cooler
July 202319.4 C19.9 C0.5 C warmer
June 202316.8 C17.2 C0.4C warmer
May 202312.4 C 11.7 C0.7 C cooler
April 20235.7 C 7.7 C2.0 C warmer
March 2023-2.0 C-1.2 C0.8 C cooler
Feb. 2023-7.7 C-4.8 C2.9 C warmer
Jan. 2023-8.9 C-3.8 C5.1 C warmer
Dec. 2022 -5.3 C-2.8 C 2.5 C warmer
Nov. 20221.7 C 2.8 C1.1 C warmer
Oct. 20227.3 C 7.6 C0.3C warmer
Sept. 202213.5 C 14.8 C1.3 C warmer
August 202218.2 C 19.2 C 1.0 C warmer
July 202219.4 C 20.1 C (Trent U. station. Missing data at Ptbo A)0.7 C warmer
June 202216.8 C 16.9 C0.1 C warmer
May 202212.4 C 13.7 C1.3 C warmer
April 20225.7 C 5.6 C0.1 C cooler
March 2022-2.0 C-1.3 C0.7 C warmer
Feb. 2022-7.7 C-7.9 C0.2C cooler
Jan. 2022-8.9 C-12.5 C3.6C cooler
Dec. 2021-5.3 C-1.3 C4.0C warmer
Nov. 20211.7 C 1.5 C 0.2C cooler
Oct. 20217.3 C 12.3 C5.0C warmer
Sept. 202113.5 C14.8 C1.3C warmer
August 202118.2 C21.0 C2.8C warmer
July 202119.4 C19.0 C0.4 C cooler
June 202116.8 C18. 8 C 2.0C warmer
May 202112.4 C11.6 C 0.8 C cooler
April 20215.7 C6.6 C1.3C warmer
March 2021-2.0 C0.6 C 2.6C warmer
Feb. 2021-7.7 C-8.1 C0.4C cooler
Jan. 2021-8.9 C-5.63.3C warmer
Dec. 2020-5.3 C-2.4 2.9C cooler
Nov. 20201.7 C4.8 C3.1C warmer
Oct. 20207.3 C6.9 C0.4C cooler
Sept. 202013.5 C13.8 C0.3C warmer
August 202018.2 C19.2 C1.0C warmer
July 202019.4 C22.6 C3.2C warmer
June 202016.8 C18 C 1.2C warmer
May 202012.4 C11.2 C 1.2C cooler
April 2020 5.7 C 4.2 C1.5 C cooler
March 2020-2.01.5 C3.5C warmer
February 2020-7.7 C-5.2 C2.5C warmer
January 2020-8.9 C-4.3 4.6C warmer
December 2019-5.3 C-4.31.0C warmer
November 20191.7 C-1.7 C
3.4C cooler
October 20197.3 C8.1 C
0.8C warmer
September 201913.5 C14.2 C
0.7C warmer
August 201918.2 C17.9 C
0.3 C cooler
July 201919.4 C20.9 C
1.5C warmer
June 201916.8 C16.3 C0.5 C cooler
May 201912.4 C11.1 C
1.3 C cooler
April 20195.7 C 5.0 C
0.7 C cooler
March 2019-2.0 C-2.2 C
0.2 C cooler
February 2019-7.7 C-6.1 C
1.6 C warmer
January 2019-8.9 C-9.7 C
0.8 C cooler
December 2018-5.3 C-2.8
2.5 C warmer
November 20181.7 C-0.9 2.6 C cooler
October 20187.3 C7.1 C
0.2 C cooler
September 201813.5 C15.9 C
2.4 C warmer
August 201818.2 C21.5 C  (Trent U. station)3.3 C warmer
July 201819.4 C21.8 C  (Trent U. station)2.4 C warmer
June 201816.8 C17.3 C0.5 C warmer
May 201812.4 C15.3 C2.9 C warmer
April 20185.7 C2.0 C3.7 C cooler
March 2018-2.0 C-1.2 C0.8 C warmer
February 2018-7.7 C-2.9 C4.8 C warmer
January 2018-8.9 C-8.40.5 C warmer
December 2017-5.3 C-9.1 C3.8 C cooler
November 20171.7 C1.4 C0.3 C cooler
October 20177.3 C10.5 C3.2 C warmer
September 201713.5 C16.1 C2.6 C warmer
August 2017 18.2 C16.7 C1.5 C cooler
July 201719.4 C19.3 C0.1 C cooler
June 201716.8 C16.9 C (Note: 129.9 mm of precipitation vs. 79.9 mm normal (1981 – 2010)0.1 C warmer
May 201712. 4 C12.1 C (Note: 187 mm of precipitation vs. 81.5 mm normal (1981 – 2010)0.3 C cooler
April 20175.7 C7.7 C (Note: 111.9 mm of precipitation vs. 68.6 mm normal (1981 – 2010)2.0 C warmer
March 2017-2.0 C-2.9 C0.9 C cooler
February 2017-7.7 C-3.0 C ( Trent University Station, since Ptbo Stn A data was incomplete)4.7 C warmer
January 2017-8.9 C-4.1 C4.8 C warmer
December 2016-5.3 C-5.2 C0.1 C  warmer
November 20161.7 C3.6 C1.9 C warmer
October 20167.3 C8.4 C1.1 C warmer
September 201613.5 C15.3 C1.8 C warmer
August 201618.2 C21.9 C3.7 C warmer
July 201619.4 C20.8 C1.4 C warmer
June 201616.8 C17.1 C0.3 C warmer
May 201612. 4 C12.5 C0.1 C warmer
April 2016 5.7 C 3.6 C2.1 C cooler
March 2016-2.0 C-0.5 C1.5 C warmer
February 2016-7.7 C-5.8 C1.9 C warmer
 January 2016 -8.9 C-6.8 C2.1 C warmer
December 2015-5.3 C2.6 C7.9 C warmer
November 20151.7 C4.7 C3.0 C warmer
October 20157.3 C7.8 C0.5 C warmer
September 201513.5 C16.9 C3.4 C warmer
August 201518.2 C18.4 C0.2 C warmer
July 201519.4 C19.3 C0.1 C cooler
June 201516.8 C16.3 C0.5 C cooler
May 201512.4 C14.3 C1.9 C warmer
April 20155.7 C6.0 C0.3 C warmer
March 2015-2.0 C-4.4 C2.2 C cooler
February 2015-7.7 C-15.8 C8.1 C cooler
January 2015-8.9 C-9.9 C1.0 C cooler
December 2014-5.3 C-2.4 C2.9 C warmer
November 20141.7 C0.8 C0.9 C cooler
October 2014 7.3 C 9.2 C1.9 C warmer
September 201413.5 C14.1 C0.6 C warmer
August 201418.2 C17.6 C0.6 C cooler
July 201419.4 C18.2 C1.2 C cooler
June 201416.8 C17.7 C0.9 C warmer
May 201412.4 C13.6 C1.2 C warmer
April 20145.7 C5.3 C0.4 C cooler
March 2014-2.0 C– 7.3 C5.3 C cooler
February 2014-7.7 C-11.5 C3.8 C cooler
January 2014-8.9 C-9.9 C1.0 C cooler 
December 2013-5.3 C-7.4 C2.1 C cooler
November 20131.7 C0.1 C1.6 C cooler
October 20137.3 C9.1 C1.8 C warmer
September 201313.5 C13.8 C0.3 C warmer
August 201318.2 C18.2 C0 
July 201319.4 C20.4 C1.0 C warmer
June 201316.8 C17.0 C0.2 C warmer
May 201312.4 C13.7 C1.3 C warmer
April 2013 5.7 C  5.0 C0.7 C cooler
March 2013-2.0 C-1.2 C0.8 C warmer
February 2013-7.7 C– 7.0 C0.7 C warmer
January 2013-8.9 C-4.7 C4.2 C warmer
December 2012-5.3 C-1.6 C3.7 C warmer
November 20121.7 C1.7 C0
October 20127.3 C8.6 C1.3 C warmer
September 201213.5 C13.2 C0.3 C cooler
August 201218.2 C18.5 C0.3 C warmer
July 201219.4 C20.8 C1.4 C warmer
June 201216.8 C18.2 C1.4 C warmer
May 201212.4 C14.2 C1.8 C warmer
April 20125.7 C5.9 C0.2 C warmer
March 2012– 2.0 C5.0 C7.0 C warmer
February 2012-7.7 C-2.5 C5.2C warmer
January 2012-8.9 C-4.2 C4.7 C warmer
December 2011-5.3 C-1.4 C3.9 C warmer
November 20111.7 C4.3 C2.6 C warmer
October 20117.3 C9.2 C1.9 C warmer
September 201113.5 C16.2 C2.7 C warmer
August 201118.2 C19.1 C0.3 C warmer
July 201119.4 C20.9 C1.4 C warmer
June 201116.8 C17.6 C1.4 C warmer
May 201112.4 C13.6 C1.8 C warmer
April 20115.7 C5.9 C0.2 C warmer
March 2011-2.0 C-1.6 C0.4 C warmer
February 2011-7.7 C-7.0 C0.7 C warmer
January 2011-8.9 C-9.9 C1.0 C cooler
December 2010-5.3 C-6.1 C0.8 C cooler
November 20101.7 C2.7 C1.0 C warmer
October 20107.3 C8.4 C1.1 C warmer
September 201013.5 C14.4 C (Trent U. Weather Station)0.9 C warmer
August 201018.2 C19.6 C (Trent U. Weather Station)1.4 C warmer
July 201019.4 C21.8 C (Trent U. Weather Station)2.4 C warmer
June 201016.8 C17.7 C (Trent U. Weather Station)0.9 C warmer
May 201012.4 C14.1 C (Trent U. Weather Station)1.7 C warmer
April 20105.7 C9.6 C  (Trent U. Weather Station)3.9 C warmer
March 2010-2.0 C2.9 C  (Trent U. Weather Station)4.9 C warmer
February 2010-7.7 C-5.2 C (Trent U. Weather Station)2.5 C warmer
January 2010-8.9 C-7.6 C (Trent U. Weather Station)1.3 C warmer