Montreal
Canada
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 34 | 28 | 23 | 18 | 18 | 17 | 27 | 31 | 35 | 35 | 36 | 36 | 36 |
| Average high, °C | 20 | 13 | 5 | -2 | -5 | -3 | 1 | 10 | 18 | 23 | 26 | 24 | 11 |
| Average temperature, °C | 14 | 8 | 1 | -6 | -9 | -8 | -2 | 5 | 13 | 18 | 21 | 19 | 6 |
| Average low, °C | 9 | 4 | -1 | -10 | -14 | -13 | -6 | 0 | 7 | 13 | 15 | 14 | 2 |
| Record low, °C | -3 | -9 | -19 | -33 | -38 | -36 | -28 | -15 | -4 | -1 | 4 | 3 | -38 |
| Rain, days | 11 | 13 | 12 | 6 | 4 | 4 | 7 | 12 | 14 | 13 | 12 | 12 | 119 |
| Snow, days | 0 | 1 | 6 | 13 | 16 | 12 | 9 | 4 | 0 | 0 | 0 | 0 | 60 |
| Fog, days | 11 | 11 | 12 | 10 | 9 | 7 | 9 | 9 | 10 | 10 | 10 | 12 | 120 |
| Thunderstorms, days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 5 | 6 | 6 | 23 |
| Snowfall, cm. | 0 | 1 | 15 | 38 | 47 | 37 | 29 | 10 | 0 | 0 | 0 | 0 | 177 |
| Average precipitation, mm. | 87 | 75 | 88 | 85 | 72 | 65 | 72 | 72 | 69 | 84 | 86 | 91 | 946 |
| Relative humidity morning, % | 85 | 84 | 81 | 78 | 74 | 74 | 74 | 72 | 72 | 75 | 77 | 82 | 77 |
| Relative humidity evening, % | 63 | 64 | 71 | 72 | 69 | 64 | 61 | 55 | 53 | 56 | 56 | 59 | 62 |
| Wind speed, km/h | 14 | 16 | 17 | 17 | 19 | 17 | 19 | 17 | 16 | 14 | 14 | 12 | 16 |
| Monthly sunshine, часов | 182 | 144 | 84 | 84 | 101 | 128 | 164 | 178 | 229 | 240 | 272 | 246 | 2052 |
| Day Length, часов | 13 | 11 | 10 | 9 | 10 | 11 | 13 | 14 | 16 | 16 | 16 | 15 | 13 |
| Dew point, °C | 10 | 3 | -2 | -10 | -13 | -12 | -7 | 0 | 6 | 11 | 15 | 14 | 15 |
| Growing degree-day, °C | 133 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 69 | 233 | 319 | 276 | 1030 |
| Atmosphere pressure, bar | 1013 | 1014 | 1013 | 1014 | 1013 | 1014 | 1013 | 1011 | 1011 | 1010 | 1010 | 1012 | 12147 |
| Solar radiation, global, Mj/m2 | 14 | 9 | 5 | 5 | 6 | 9 | 13 | 16 | 18 | 20 | 20 | 18 | 13 |