Peterborough Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Peterborough, Ontario during each month of the year.

The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 10, 20 or 30 °C each month in Peterborough, scroll down farther. There are also monthly and yearly counts of days with frost and cold weather.

All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.

Average Peterborough temperatures
High °F Low °F   High °C Low °C
27 11 January -3 -12
30 14 February -1 -10
38 21 March 3 -6
53 35 April 12 2
66 46 May 19 8
74 55 June 23 13
80 60 July 26 15
77 58 August 25 14
68 50 September 20 10
56 39 October 13 4
43 30 November 6 -1
32 18 December 0 -8
54 36 Year 12 2

Days of Hot Weather in Peterborough

The hottest days at Peterborough have temperatures peaking in the low-thirties Celsius. The city averages seven days a year with thirty-degree weather, which can show up from May to September. The temperature does not normally climb above 35 °C (95 °F) here.

Days per month in Peterborough over 10, 20 or 30 °C
  10 °C
50 °F
20 °C
68 °F
30 °C
86 °F
January 0 0 0
February 0 0 0
March 4 0 0
April 17 3 0
May 29 12 0
June 30 23 1
July 31 30 4
August 31 28 2
September 30 14 0
October 22 2 0
November 6 0 0
December 1 0 0
Year 201 112 7

When Peterborough Has Frosty Weather

Peterborough typically has 152 days a year when the minimum temperature is at 0 °C or below. The average date for the last frost in spring is April 24. Frost normally returns here on October 9. The frost-free period extends for 168 days on average between the final spring frost and the first fall frost.

Average number of days with freezing temperatures in Peterborough
  0 °C
32 °F
January 30
February 27
March 26
April 12
May 1
June 0
July 0
August 0
September 0
October 8
November 20
December 29
Year 152

How Often Peterborough Has Cold Temperatures

Peterborough's chilliest winter nights have lows in the minus-twenties °C (below -3 °F). The city averages nine nights a year when the thermometer drops that low. Temperatures below -30 °C (-22 °F) occur on average just once every three years.

From November to April, Peterborough can remain below freezing all day long. The city typically has 64 days a year when the temperature never rises above 0 °C.

Days per month on average in Peterborough when the minimum temperature drops below -2, -10, or -20 °C
  -2 °C
28 °F
-10 °C
14 °F
-20 °C
-4 °F
January 27 17 4
February 24 14 2
March 21 7 0
April 5 0 0
May 0 0 0
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 2 0 0
November 12 1 0
December 24 10 2
Year 115 50 9
Reference

Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.

Ontario Temperatures
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