Average monthly temperatures in Toronto
January 2006 through December 2017, n=144

-1.1    -0.2    3.6    12.3    19.5    22.5    26.3    24.0    21.4    13.8    8.4    1.8
-1.4    -0.4    4.6    11.4    18.4    23.3    25.0    25.7    20.3    12.5    7.3    2.2
-1.0    -0.1    4.2    11.7    18.3    22.2    24.3    25.4    21.4    14.4    7.5    2.3
-1.6    -0.6    4.1    13.1    16.4    21.6    25.7    24.4    22.6    13.7    6.5    1.8
-1.3    -0.4    4.6    11.3    17.4    23.1    25.7    24.0    22.7    13.7    5.4    0.9
-0.9    -0.4    4.5    10.3    17.2    22.0    26.5    25.1    21.6    14.3    6.7    1.0
-1.3    -0.3    4.0    12.8    18.8    25.5    26.4    26.3    21.7    13.4    6.2    2.5
-1.1    -0.2    4.3    11.0    14.6    24.5    23.5    25.4    21.7    12.5    7.7    3.0
-1.7    -1.0    4.4    13.9    15.0    23.4    23.2    24.7    23.4    12.5    8.3    2.5
-1.9    -0.8    4.8    14.7    16.6    23.3    24.4    25.3    22.1    13.3    6.7    1.1
-1.5    -0.6    4.9    12.7    17.3    24.4    25.6    25.2    22.7    14.1    7.2    1.3
-1.1    -0.4    4.2    12.4    18.2    21.1    24.2    25.1    22.6    13.6    7.1    2.2
-1.0    -0.6    4.1    13.3    18.4    22.0    25.2    23.8    21.4    13.8    5.8    1.4