Temperatures

 

MEAN MONTHLY TEMPERATURES IN PETERBOROUGH (Station A) SINCE JAN. 2010

(source: Environment Canada:Canadian Climate Normals 1971-2000 and Daily Data Report. Peterborough Station A records 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 )

From Jan. 2010 through March 2017, 65 of the 87 months (75%) have been warmer than the 1971 – 2000 Normal for each month. This is a 3:1 ratio for warmer than average versus cooler than average. If the climate wasn’t warming, this ratio would be close to 1:1. Since August 2015, only TWO months have been cooler than average. 

From Nov. 2013 to July 2015, 14 of the 21 months (66%) were cooler than the 1971 to 2000 Normal. December 2015 showed the biggest departure (7.9 C ) from Normal (-5.3 C) for all months of December since at least 1968 probably the warmest December ever.

(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.)

Month Normal (1971-2000) Recorded Difference
April 2017 5.7 C 7.7 C 2.0 C warmer
March 2017 -2.0 C -2.9 C 0.9 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 4.8 C warmer
December 2016 -5.3 C -5.2 C 0.1 C  warmer
November 2016 1.7 C 3.6 C 1.9 C warmer
October 2016 7.3 C 8.4 C 1.1 C warmer
September 2016 13.5 C 15.3 C 1.8 C warmer
August 2016 18.2 C 21.9 C 3.7 C warmer
July 2016 19.4 C 20.8 C 1.4 C warmer
June 2016 16.8 C 17.1 C 0.3 C warmer
May 2016 12. 4 C 12.5 C 0.1 C warmer
April 2016  5.7 C  3.6 C 2.1 C cooler
March 2016 -2.0 C -0.5 C 1.5 C warmer
February 2016 -7.7 C -5.8 C 1.9 C warmer
 January 2016  -8.9 C -6.8 C 2.1 C warmer
December 2015 -5.3 C 2.6 C 7.9 C warmer
November 2015 1.7 C 4.7 C 3.0 C warmer
October 2015 7.3 C 7.8 C 0.5 C warmer
September 2015 13.5 C 16.9 C 3.4 C warmer
August 2015 18.2 C 18.4 C 0.2 C warmer
July 2015 19.4 C 19.3 C 0.1 C cooler
June 2015 16.8 C 16.3 C 0.5 C cooler
May 2015 12.4 C 14.3 C 1.9 C warmer
April 2015 5.7 C 6.0 C 0.3 C warmer
March 2015 -2.0 C -4.4 C 2.2 C cooler
February 2015 -7.7 C -15.8 C 8.1 C cooler
January 2015 -8.9 C -9.9 C 1.0 C cooler
December 2014 -5.3 C -2.4 C 2.9 C warmer
November 2014 1.7 C 0.8 C 0.9 C cooler
October 2014  7.3 C  9.2 C 1.9 C warmer
September 2014 13.5 C 14.1 C 0.6 C warmer
August 2014 18.2 C 17.6 C 0.6 C cooler
July 2014 19.4 C 18.2 C 1.2 C cooler
June 2014 16.8 C 17.7 C 0.9 C warmer
May 2014 12.4 C 13.6 C 1.2 C warmer
April 2014 5.7 C 5.3 C 0.4 C cooler
March 2014 -2.0 C – 7.3 C 5.3 C cooler
February 2014 -7.7 C -11.5 C 3.8 C cooler
January 2014 -8.9 C -9.9 C 1.0 C cooler 
December 2013 -5.3 C -7.4 C 2.1 C cooler
November 2013 1.7 C 0.1 C 1.6 C cooler
October 2013 7.3 C 9.1 C 1.8 C warmer
September 2013 13.5 C 13.8 C 0.3 C warmer
August 2013 18.2 C 18.2 C 0 
July 2013 19.4 C 20.4 C 1.0 C warmer
June 2013 16.8 C 17.0 C 0.2 C warmer
May 2013 12.4 C 13.7 C 1.3 C warmer
April 2013  5.7 C   5.0 C 0.7 C cooler
March 2013 -2.0 C -1.2 C 0.8 C warmer
February 2013 -7.7 C – 7.0 C 0.7 C warmer
January 2013 -8.9 C -4.7 C 4.2 C warmer
December 2012 -5.3 C -1.6 C 3.7 C warmer
November 2012 1.7 C 1.7 C 0
October 2012 7.3 C 8.6 C 1.3 C warmer
September 2012 13.5 C 13.2 C 0.3 C cooler
August 2012 18.2 C 18.5 C 0.3 C warmer
July 2012 19.4 C 20.8 C 1.4 C warmer
June 2012 16.8 C 18.2 C 1.4 C warmer
May 2012 12.4 C 14.2 C 1.8 C warmer
April 2012 5.7 C 5.9 C 0.2 C warmer
March 2012 – 2.0 C 5.0 C 7.0 C warmer
February 2012 -7.7 C -2.5 C 5.2 C warmer
January 2012 -8.9 C -4.2 C 4.7 C warmer
December 2011 -5.3 C -1.4 C 3.9 C warmer
November 2011 1.7 C 4.3 C 2.6 C warmer
October 2011 7.3 C 9.2 C 1.9 C warmer
September 2011 13.5 C 16.2 C 2.7 C warmer
August 2011 18.2 C 19.1 C 0.3 C warmer
July 2011 19.4 C 20.9 C 1.4 C warmer
June 2011 16.8 C 17.6 C 1.4 C warmer
May 2011 12.4 C 13.6 C 1.8 C warmer
April 2011 5.7 C 5.9 C 0.2 C warmer
March 2011 -2.0 C -1.6 C 0.4 C warmer
February 2011 -7.7 C -7.0 C 0.7 C warmer
January 2011 -8.9 C -9.9 C 1.0 C cooler
December 2010 -5.3 C -6.1 C 0.8 C cooler
November 2010 1.7 C 2.7 C 1.0 C warmer
October 2010 7.3 C 8.4 C 1.1 C warmer
September 2010 13.5 C 14.4 C (Trent U. Weather Station) 0.9 C warmer
August 2010 18.2 C 19.6 C (Trent U. Weather Station) 1.4 C warmer
July 2010 19.4 C 21.8 C (Trent U. Weather Station) 2.4 C warmer
June 2010 16.8 C 17.7 C (Trent U. Weather Station) 0.9 C warmer
May 2010 12.4 C 14.1 C (Trent U. Weather Station) 1.7 C warmer
April 2010 5.7 C 9.6 C  (Trent U. Weather Station) 3.9 C warmer
March 2010 -2.0 C 2.9 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