Montreal
Canada
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 38 | 33 | 22 | 14 | 8 | 15 | 26 | 36 | 39 | 42 | 43 | 41 | 43 |
| Average high, °C | 19 | 11 | -0 | -8 | -11 | -7 | -0 | 11 | 19 | 23 | 26 | 26 | 9 |
| Average temperature, °C | 12 | 5 | -5 | -14 | -17 | -13 | -6 | 5 | 11 | 17 | 19 | 18 | 3 |
| Average low, °C | 5 | -2 | -11 | -19 | -22 | -19 | -11 | -2 | 4 | 10 | 12 | 11 | -4 |
| Record low, °C | -12 | -27 | -41 | -43 | -46 | -47 | -44 | -28 | -14 | -4 | 0 | -3 | -47 |
| Rain, days | 8 | 6 | 1 | 0 | 0 | 0 | 2 | 4 | 8 | 11 | 10 | 9 | 58 |
| Snow, days | 0 | 1 | 5 | 8 | 9 | 6 | 5 | 2 | 0 | 0 | 0 | 0 | 37 |
| Snowfall, cm. | 0 | 6 | 15 | 20 | 18 | 12 | 17 | 8 | 5 | 0 | 0 | 0 | 101 |
| Average precipitation, mm. | 42 | 29 | 19 | 21 | 18 | 13 | 25 | 25 | 57 | 80 | 68 | 66 | 462 |
| Relative humidity, % | 69 | 71 | 87 | 88 | 86 | 86 | 82 | 69 | 63 | 68 | 72 | 70 | 76 |
| Relative humidity morning, % | 88 | 86 | 84 | 80 | 77 | 79 | 83 | 81 | 80 | 87 | 91 | 91 | 84 |
| Relative humidity evening, % | 50 | 56 | 69 | 75 | 74 | 73 | 70 | 48 | 46 | 53 | 55 | 50 | 60 |
| Wind speed, km/h | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 17 | 15 | 12 | 13 | 15 |
| Monthly sunshine, часов | 161 | 130 | 92 | 89 | 115 | 109 | 169 | 227 | 241 | 258 | 322 | 259 | 2171 |
| Day Length, часов | 13 | 11 | 10 | 9 | 9 | 11 | 13 | 14 | 16 | 17 | 17 | 15 | 13 |
| Dew point, °C | 6 | 0 | -7 | -16 | -18 | 0 | -10 | -2 | 3 | 9 | 13 | 12 | -10 |
| Growing degree-day, °C | 66 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 43 | 198 | 285 | 254 | 847 |
| Atmosphere pressure, bar | 983 | 982 | 983 | 984 | 984 | 985 | 984 | 982 | 981 | 980 | 981 | 982 | 11792 |
| Solar radiation, global, Mj/m2 | 13 | 8 | 5 | 3 | 4 | 8 | 12 | 17 | 20 | 21 | 21 | 18 | 13 |