Montreal
Canada
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 30 | 25 | 17 | 13 | 9 | 13 | 20 | 29 | 31 | 33 | 34 | 35 | 35 |
| Average high, °C | 17 | 10 | 3 | -4 | -8 | -5 | 1 | 10 | 17 | 21 | 24 | 23 | 9 |
| Average temperature, °C | 12 | 6 | -1 | -9 | -13 | -10 | -5 | 5 | 11 | 15 | 18 | 17 | 4 |
| Average low, °C | 7 | 1 | -5 | -14 | -19 | -16 | -10 | -1 | 5 | 9 | 12 | 11 | -2 |
| Record low, °C | -7 | -12 | -24 | -38 | -39 | -37 | -35 | -22 | -8 | -5 | 0 | -2 | -39 |
| Rain, days | 14 | 14 | 9 | 3 | 2 | 2 | 4 | 10 | 14 | 14 | 13 | 15 | 113 |
| Snow, days | 0 | 1 | 7 | 13 | 13 | 9 | 8 | 3 | 0 | 0 | 0 | 0 | 54 |
| Snowfall, cm. | 0 | 2 | 22 | 52 | 51 | 40 | 27 | 6 | 2 | 0 | 0 | 0 | 201 |
| Average precipitation, mm. | 102 | 105 | 88 | 74 | 64 | 61 | 52 | 68 | 107 | 117 | 100 | 111 | 1050 |
| Relative humidity, % | 83 | 79 | 80 | 80 | 78 | 73 | 74 | 67 | 63 | 69 | 76 | 77 | 75 |
| Relative humidity morning, % | 96 | 90 | 87 | 84 | 79 | 79 | 79 | 82 | 84 | 88 | 93 | 96 | 86 |
| Relative humidity evening, % | 67 | 66 | 74 | 75 | 70 | 63 | 57 | 56 | 53 | 59 | 60 | 65 | 64 |
| Wind speed, km/h | 9 | 10 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 8 | 10 |
| Monthly sunshine, часов | 161 | 126 | 72 | 59 | 98 | 123 | 161 | 177 | 206 | 233 | 262 | 223 | 1899 |
| Day Length, часов | 13 | 11 | 10 | 9 | 10 | 11 | 13 | 14 | 16 | 16 | 16 | 15 | 13 |
| Dew point, °C | 9 | 2 | -1 | -12 | -14 | -17 | -7 | -1 | 2 | 6 | 13 | 11 | -9 |
| Growing degree-day, °C | 48 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 31 | 158 | 245 | 208 | 691 |
| Atmosphere pressure, bar | 1012 | 1013 | 1012 | 1011 | 1011 | 1012 | 1012 | 1011 | 1011 | 1009 | 1008 | 1011 | 12132 |
| Solar radiation, global, Mj/m2 | 13 | 8 | 5 | 5 | 6 | 9 | 13 | 17 | 18 | 20 | 19 | 17 | 12 |