Average daily temperatures in Quebec, Quebec, including the lower and upper bounds of the 95% confidence interval. Due to the possibility of missing data, the actual day counts used in the average and confidence interval calculations are provided. The table is also offered in degrees of Fahrenheit.
| January | February | March | April | May | June | July | August | September | October | November | December | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | -15 -11 -6 | -13 -9 -6 | -10 -7 -3 | -1 1 3 | 7 9 12 | 13 15 18 | 17 19 21 | 20 21 22 | 16 17 18 | 9 11 12 | 3 5 7 | -5 -2 0 |
| 2 | -15 -11 -8 | -11 -8 -5 | -8 -5 -2 | -0 1 2 | 7 9 11 | 12 14 16 | 17 19 21 | 19 20 21 | 14 16 18 | 9 12 14 | 1 4 6 | -8 -4 -1 |
| 3 | -13 -10 -7 | -13 -8 -4 | -11 -7 -3 | -1 1 2 | 6 9 11 | 12 14 16 | 17 19 21 | 19 21 22 | 15 16 18 | 8 10 12 | 0 3 6 | -9 -6 -3 |
| 4 | -12 -9 -5 | -14 -10 -6 | -10 -7 -3 | -1 0 2 | 8 10 12 | 12 14 16 | 18 19 21 | 18 20 21 | 15 16 18 | 7 9 12 | 0 2 4 | -8 -5 -2 |
| 5 | -14 -10 -6 | -15 -11 -7 | -9 -7 -5 | -3 -1 2 | 9 11 13 | 12 14 15 | 18 19 20 | 18 19 21 | 14 16 17 | 6 9 12 | 1 3 5 | -9 -5 -2 |
| 6 | -12 -8 -4 | -16 -12 -8 | -9 -6 -3 | -2 0 3 | 8 10 12 | 13 15 16 | 17 19 20 | 17 18 20 | 14 16 18 | 6 8 9 | 2 3 5 | -9 -5 -1 |
| 7 | -11 -8 -4 | -14 -11 -8 | -10 -7 -4 | -1 1 3 | 8 10 13 | 15 16 18 | 17 19 20 | 18 19 21 | 15 17 19 | 7 8 10 | 1 3 5 | -9 -5 -1 |
| 8 | -16 -12 -7 | -15 -13 -10 | -10 -7 -4 | -0 1 2 | 9 12 14 | 14 16 18 | 18 19 20 | 18 19 21 | 14 16 19 | 6 8 10 | -1 2 4 | -11 -7 -3 |
| 9 | -14 -10 -5 | -14 -11 -8 | -11 -7 -4 | 0 2 3 | 9 12 14 | 15 17 18 | 17 18 20 | 18 20 22 | 13 16 18 | 7 9 11 | -2 2 5 | -14 -10 -6 |
| 10 | -15 -10 -4 | -12 -9 -6 | -10 -7 -4 | -0 1 3 | 9 11 14 | 15 17 19 | 16 17 19 | 19 20 22 | 13 15 17 | 7 9 11 | -1 1 3 | -10 -7 -3 |
| 11 | -16 -11 -6 | -14 -12 -9 | -9 -6 -3 | 1 2 4 | 9 11 13 | 15 17 19 | 16 18 19 | 18 19 21 | 12 14 16 | 7 8 10 | 0 2 3 | -7 -4 -1 |
| 12 | -14 -10 -6 | -16 -12 -9 | -7 -4 -2 | 2 3 5 | 7 9 11 | 16 18 20 | 18 19 20 | 17 19 20 | 13 15 16 | 7 9 11 | -2 1 3 | -8 -5 -2 |
| 13 | -13 -9 -6 | -18 -14 -10 | -9 -5 -2 | 2 4 6 | 8 9 11 | 16 18 19 | 18 20 21 | 17 19 21 | 14 15 17 | 8 10 11 | -3 -1 1 | -11 -7 -3 |
| 14 | -17 -12 -7 | -16 -13 -9 | -8 -4 -1 | 2 3 5 | 9 11 13 | 15 17 19 | 19 21 23 | 17 19 20 | 13 15 17 | 8 9 11 | -2 0 3 | -10 -6 -2 |
| 15 | -19 -14 -9 | -15 -11 -6 | -5 -3 -1 | 2 4 5 | 10 12 14 | 15 17 19 | 19 21 22 | 17 19 21 | 14 16 18 | 5 8 10 | -1 2 4 | -12 -7 -2 |
| 16 | -16 -11 -7 | -16 -11 -7 | -7 -4 -2 | 2 4 6 | 10 11 13 | 14 17 19 | 19 20 22 | 18 20 21 | 12 14 16 | 5 7 8 | -2 1 4 | -9 -6 -2 |
| 17 | -16 -12 -7 | -15 -11 -8 | -7 -5 -3 | 2 4 7 | 9 11 13 | 15 17 19 | 19 20 22 | 18 19 21 | 12 13 15 | 5 7 8 | -3 -1 2 | -6 -4 -2 |
| 18 | -17 -11 -5 | -13 -10 -6 | -7 -5 -3 | 3 5 7 | 9 12 14 | 15 17 19 | 18 20 21 | 16 18 19 | 12 13 14 | 5 6 7 | -4 -2 -0 | -10 -6 -2 |
| 19 | -14 -9 -3 | -13 -9 -5 | -6 -4 -2 | 5 6 8 | 9 12 14 | 16 18 20 | 17 19 20 | 16 17 19 | 11 13 15 | 4 6 8 | -4 -1 1 | -11 -8 -5 |
| 20 | -13 -9 -5 | -11 -8 -5 | -4 -2 -1 | 5 7 8 | 10 12 14 | 16 18 20 | 16 18 20 | 15 17 18 | 13 14 16 | 4 6 8 | -1 0 2 | -10 -8 -5 |
| 21 | -16 -12 -7 | -10 -7 -3 | -4 -2 0 | 5 6 8 | 10 12 14 | 16 17 19 | 18 20 21 | 17 18 20 | 12 14 16 | 4 6 9 | -1 1 2 | -13 -9 -4 |
| 22 | -17 -13 -10 | -13 -9 -5 | -5 -2 1 | 6 7 9 | 10 12 13 | 17 19 20 | 19 20 22 | 16 18 19 | 11 13 15 | 3 5 8 | -2 0 2 | -11 -7 -4 |
| 23 | -15 -11 -7 | -11 -8 -5 | -6 -3 1 | 4 6 8 | 11 12 14 | 16 18 20 | 18 19 20 | 15 16 18 | 10 12 14 | 3 5 7 | -3 -1 1 | -9 -6 -3 |
| 24 | -14 -10 -5 | -11 -8 -4 | -6 -3 0 | 4 6 7 | 11 13 14 | 17 19 21 | 18 19 21 | 15 17 18 | 9 11 14 | 4 6 7 | -6 -2 2 | -9 -5 -1 |
| 25 | -15 -11 -7 | -12 -8 -5 | -5 -3 -0 | 3 5 6 | 10 13 15 | 18 19 21 | 19 20 21 | 15 17 18 | 10 12 14 | 4 6 7 | -6 -2 2 | -11 -7 -3 |
| 26 | -17 -13 -10 | -12 -7 -3 | -2 -0 2 | 4 5 7 | 11 13 15 | 18 20 22 | 19 20 22 | 16 17 19 | 10 12 14 | 3 5 7 | -5 -2 1 | -10 -7 -3 |
| 27 | -18 -14 -10 | -11 -6 -2 | -2 0 2 | 4 6 7 | 11 13 14 | 18 20 22 | 18 20 21 | 16 18 19 | 10 12 14 | 4 5 7 | -5 -2 1 | -10 -7 -4 |
| 28 | -16 -12 -9 | -10 -7 -3 | -2 0 3 | 4 5 6 | 12 14 15 | 18 19 21 | 18 20 21 | 16 18 19 | 10 12 14 | 3 5 6 | -6 -3 0 | -12 -9 -6 |
| 29 | -15 -12 -9 | -21 -8 5 | -1 1 3 | 5 7 8 | 12 14 16 | 17 19 21 | 19 20 22 | 16 18 19 | 9 11 13 | 2 3 4 | -6 -3 -0 | -10 -8 -5 |
| 30 | -16 -12 -8 | 0 2 4 | 6 8 11 | 12 14 16 | 17 19 20 | 19 20 21 | 15 17 18 | 9 11 12 | 2 3 4 | -6 -2 1 | -11 -8 -5 | |
| 31 | -15 -12 -9 | -0 1 3 | 13 15 17 | 19 21 22 | 15 16 17 | 2 4 6 | -14 -11 -7 |