Canadian Climate Normals 1971-2000 Station Data

The minimum number of years used to calculate these Normals is indicated by a code for each element. A "+" beside an extreme date indicates that this date is the first occurrence of the extreme value. Values and dates in bold indicate all-time extremes for the location.

Data used in the calculation of these Normals may be subject to further quality assurance checks. This may result in minor changes to some values presented here.

Metadata including Station Name, Province, Latitude, Longitude, Elevation, Climate ID, WMO ID, TC ID
MONTREAL/PIERRE ELLIOTT TRUDEAU INTL A *
QUEBEC
Latitude: 45°28'00.000" N Longitude: 73°45'00.000" W Elevation: 36.00 m
Climate ID: 7025250 WMO ID: 71627 TC ID: YUL

* This station meets WMO standards for temperature and precipitation.

1971 to 2000 Canadian Climate Normals station data
 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Temperature:
Daily Average (°C)-10.2 -8.4 -2.3 5.7 13.4 18.2 20.9 19.6 14.6 8.1 1.6 -6.3 6.2 LegendAA
Standard Deviation2.9 3 2.3 1.7 1.7 1.2 1 1.1 1.4 1.6 1.6 3.2 0.9 LegendAA
Daily Maximum (°C)-5.7 -3.9 2.2 10.7 19 23.6 26.2 24.8 19.7 12.7 5.3 -2.2 11.1 LegendAA
Daily Minimum (°C)-14.7 -12.9 -6.7 0.6 7.7 12.7 15.6 14.3 9.4 3.4 -2.1 -10.4 1.4 LegendAA
Extreme Maximum (°C)13.9 15 25.6 30 33.9 35 35.6 37.6 33.5 28.3 21.7 18   Legend
Extreme Minimum (°C)-37.8 -33.9 -29.4 -15 -4.4 0 6.1 3.3 -2.2 -7.2 -19.4 -32.4   Legend
Precipitation:
Rainfall (mm)27.2 19.8 35.8 63.9 76.1 83.1 91.3 92.7 92.6 75.4 71.2 35.1 763.8 LegendAA
Snowfall (cm)52.5 43.3 36 13.1 0.2 0 0 0 0 2.2 21.9 48.3 217.5 LegendAA
Precipitation (mm)78.3 61.5 73.6 78 76.3 83.1 91.3 92.7 92.6 77.8 92.6 81.3 978.9 LegendAA
Average Snow Depth (cm)15 18 13 1 0 0 0 0 0 0 1 8 5 LegendAA
Median Snow Depth (cm)15 18 12 0 0 0 0 0 0 0 0 7 4 LegendAA
Snow Depth at Month-end (cm)17 17 3 0 0 0 0 0 0 0 3 13 4 LegendAA
Extreme Daily Rainfall (mm)46.6 31.5 32.4 48.2 45.6 66.5 63.6 73.8 81.9 80.5 93.5 51.2   Legend
Extreme Daily Snowfall (cm)35.8 39.4 43.2 33.9 21.8 0 0 0 6.1 21.2 30.5 41.2   Legend
Extreme Daily Precipitation (mm)47 39.4 42.8 48.2 45.6 66.5 63.6 73.8 81.9 80.5 93.5 51.4   Legend
Extreme Snow Depth (cm)61 91 102 44 8 0 0 0 0 15 33 64   Legend
Days with Maximum Temperature:
<= 0 °C23.2 19.7 10.6 0.59 0 0 0 0 0 0 5 18.3 77.4 LegendAA
> 0 °C7.8 8.6 20.4 29.4 31 30 31 31 30 31 25 12.7 287.9 LegendAA
> 10 °C0.10 0.23 3.2 15.3 29.7 30 31 31 29.7 20.9 5.7 0.57 197.5 LegendAA
> 20 °C0 0 0.10 2.1 12.4 23.9 30 28.2 13.7 2.4 0.03 0 112.7 LegendAA
> 30 °C0 0 0 0 0.63 1.5 3.2 1.8 0.39 0 0 0 7.6 LegendAA
> 35 °C0 0 0 0 0 0 0 0.03 0 0 0 0 0.03 LegendAA
Days with Minimum Temperature:
> 0 °C0.90 1.3 4.9 17 30.3 30 31 31 29.5 23.3 11 2 212.2 LegendAA
<= 2 °C30.8 27.8 29.6 18.9 2.1 0.10 0 0 1.4 12.8 23.7 30.4 177.6 LegendAA
<= 0 °C30.1 27 26.1 13 0.71 0 0 0 0.46 7.7 19 29 153.1 LegendAA
< -2 °C29.1 25.8 22.2 8.1 0.21 0 0 0 0 3.5 14.2 27 130.1 LegendAA
< -10 °C22.3 18.2 9.1 0.41 0 0 0 0 0 0 2.1 15.2 67.3 LegendAA
< -20 °C8.2 4.8 0.77 0 0 0 0 0 0 0 0 3.2 16.9 LegendAA
< - 30 °C0.30 0.13 0 0 0 0 0 0 0 0 0 0.07 0.50 LegendAA
Days with Rainfall:
>= 0.2 mm4.3 4.2 7.2 11.3 12.9 13.1 12 12.3 12 12.7 11.2 6.1 119.4 LegendAA
>= 5 mm1.6 1.2 2.3 4.5 4.7 4.9 5.3 5.4 5.4 4.6 4.5 2.4 46.6 LegendAA
>= 10 mm1 0.63 1 2.1 2.7 2.9 3 3.3 2.9 2.3 2.3 1.2 25.3 LegendAA
>= 25 mm0.17 0.03 0.13 0.31 0.43 0.50 0.86 0.70 1 0.43 0.47 0.07 5.1 LegendAA
Days With Snowfall:
>= 0.2 cm15.7 11.6 9.3 3.5 0.10 0 0 0 0 1 6 13.1 60.3 LegendAA
>= 5 cm3.4 2.7 2.2 0.93 0 0 0 0 0 0.14 1.5 3.4 14.3 LegendAA
>= 10 cm1.3 1.1 0.87 0.30 0 0 0 0 0 0.03 0.63 1.4 5.6 LegendAA
>= 25 cm0.07 0.10 0.07 0.10 0 0 0 0 0 0 0 0.03 0.37 LegendAA
Days with Precipitation:
>= 0.2 mm16.9 13.2 13.7 12.8 13 13.1 12.1 12.3 12 13.2 15 16 163.3 LegendAA
>= 5 mm4.6 3.9 4.9 5.2 4.7 4.9 5.4 5.4 5.4 4.7 5.6 5.5 60.1 LegendAA
>= 10 mm2.5 2.1 2.3 2.6 2.7 2.9 3.1 3.3 2.9 2.3 3.1 2.8 32.4 LegendAA
>= 25 mm0.43 0.10 0.40 0.41 0.43 0.50 0.83 0.70 1 0.50 0.60 0.23 6.1 LegendAA
Days with Snow Depth:
>= 1 cm28.7 26.4 21.6 4 0 0 0 0 0 0.13 6.3 22 109.1 LegendAA
>= 5 cm24.3 22.4 17.2 2.4 0 0 0 0 0 0 3.3 17.2 86.8 LegendAA
>= 10 cm19.5 18.2 13.4 1.2 0 0 0 0 0 0 1.1 11.9 65.4 LegendAA
>= 20 cm10.1 12 7.6 0.33 0 0 0 0 0 0 0.10 2.9 33.1 LegendAA
Wind:
Speed (km/h)16.6 15.4 15.9 15.8 14.2 13.2 12.2 11.3 12.2 13.8 15.3 15.4 14.3 LegendAA
Most Frequent DirectionW SW N N SW SW SW SW SW SW SW SW SW LegendAA
Maximum Hourly Speed (km/h)90 80 74 70 72 66 58 55 65 72 76 72   Legend
Direction of Maximum Hourly SpeedSW N NE W SW NE SW NW NE SW SW W SW Legend
Maximum Gust Speed (km/h)117 138 161 106 103 111 126 105 97 117 113 103   Legend
Direction of Maximum GustSW SW S SW SW S W S SW SW S SW CALM Legend
Days with Winds >= 52 km/h2.5 1.2 1.6 1 0.8 0.5 0.7 0.4 0.3 0.9 1.7 2 13.5 LegendCC
Days with Winds >= 63 km/h0.6 0.2 0.3 0.3 0.2 0.2 0.2 0.1 0 0.1 0.6 0.4 3.3 LegendCC
Degree Days:
Above 24 °C0 0 0 0 0.1 2 6.1 3.2 0.5 0 0 0 11.9 LegendAA
Above 18 °C0 0 0 0.4 10.6 46.3 97.1 70.6 16.1 0.4 0 0 241.6 LegendAA
Above 15 °C0 0 0 2.2 32.7 106.1 182.9 146.1 45.5 3.4 0 0 518.7 LegendAA
Above 10 °C0 0 0.5 15.7 117.8 244 337.2 297.5 146.5 30.9 2.8 0 1192.9 LegendAA
Above 5 °C0.2 0.8 7 68.3 257.7 393.5 492.2 452.5 289.1 113.3 22.7 1.1 2098.4 LegendAA
Above 0 °C5.6 8.3 43.6 179.4 411.8 543.5 647.2 607.5 438.9 250.9 88.3 13.3 3238.2 LegendAA
Below 0 °C322.4 246.8 113.8 7.7 0 0 0 0 0 0.5 40.4 208.9 940.5 LegendAA
Below 5 °C472 380.7 232.3 46.7 0.9 0 0 0 0.1 17.9 124.9 351.7 1627.1 LegendAA
Below 10 °C626.8 521.2 380.8 144 16 0.5 0 0.1 7.6 90.5 255 505.5 2547.9 LegendAA
Below 15 °C781.8 662.5 535.3 280.6 85.9 12.6 0.7 3.6 56.5 218 402.2 660.5 3700.1 LegendAA
Below 18 °C874.8 747.3 628.3 368.8 156.7 42.8 7.9 21.1 117.2 308 492.2 753.5 4518.7 LegendAA
Bright Sunshine:
Total Hours101.6 123.9 158.9 173.3 229.7 245.5 274.3 240.5 174.6 140 86.1 80.2 2028.7 LegendCC
Days with measureable21.3 21.9 24.9 25.3 28.4 28.2 30.2 29.4 26.6 26.2 20.9 20.3 303.5 LegendCC
% of possible daylight hours35.8 42.4 43.1 42.8 49.8 52.4 57.9 55 46.3 41.1 30 29.5 43.8 LegendCC
Extreme Daily9.1 10.7 11.8 13.5 14.4 14.9 14.8 14.2 12.7 10.9 9.8 8.5   LegendAA
Humidex:
Extreme Humidex13.5 14.7 23.2 33.8 38.7 45 45.8 46.8 42.8 33.5 24.6 18.1   Legend
Days with Humidex >= 300 0 0 0.1 2.1 8.5 17 13.3 3.7 0.1 0 0 44.7 LegendAA
Days with Humidex >= 350 0 0 0 0.5 2.4 6 3.9 0.7 0 0 0 13.5 LegendAA
Days with Humidex >= 400 0 0 0 0 0.3 1.2 0.6 0.1 0 0 0 2.1 LegendAA
Wind Chill:
Extreme Wind Chill-49.1 -46 -42.9 -26.3 -9.9 -1.9 4.2 1.5 -4.8 -10.9 -30.7 -46   Legend
Days with Wind Chill < -2017.7 13.4 5.2 0.1 0 0 0 0 0 0 0.3 10.4 47.1 LegendAA
Days with Wind Chill < -306.2 2.5 0.3 0 0 0 0 0 0 0 0 2.5 11.5 LegendAA
Days with Wind Chill < -400.6 0.1 0 0 0 0 0 0 0 0 0 0.1 0.9 LegendAA
Humidity:
Average Vapour Pressure (kPa)0.3 0.3 0.4 0.6 1 1.5 1.8 1.7 1.3 0.9 0.6 0.3 0.9 LegendAA
Average Relative Humidity - 0600LST (%)73.9 73.7 74.8 75 75.2 78.9 81.9 86.2 87.3 83.6 80.9 78.2 79.1 LegendAA
Average Relative Humidity - 1500LST (%)68.1 64 61 54 52 56.2 56.3 58.2 61.5 62.1 68.7 71 61.1 LegendAA
Pressure:
Average Station Pressure (kPa)101.2 101.3 101.1 100.9 100.9 100.9 100.9 101.1 101.2 101.3 101.2 101.3 101.1 LegendAA
Average Sea Level Pressure (kPa)101.6 101.7 101.6 101.4 101.4 101.3 101.3 101.5 101.6 101.7 101.6 101.7 101.5 LegendAA
Radiation:
Extreme Global - RF1 (MJ/m2)11.2 16.8 22.9 27.7 31.1 31.7 30.5 27.3 23.4 17.7 11.9 8.3   Legend
Extreme Diffuse - RF2 (MJ/m2)6 8.6 13 14.5 13.7 14.5 15 12.6 10.7 8.1 5.2 4.3   Legend
Visibility (hours with):
< 1 km8.9 9.3 9.6 5.4 1.7 1.2 0.4 1.4 2.7 5.8 6.7 9.6 62.7 LegendBB
1 to 9 km161.3 124 107.2 61.1 43.4 56.4 56.6 75.5 66.7 69.8 114.9 155.2 1092.1 LegendBB
> 9 km573.8 544.3 627.2 653.5 698.9 662.4 687 667 650.6 668.4 598.4 579.2 7610.8 LegendBB
Cloud Amount (hours with):
0 to 2 tenths187.7 194.7 217.3 184 189.8 189.4 209.8 210.2 198.7 190.8 125.8 162.5 2260.6 LegendBB
3 to 7 tenths97.8 96.9 103.8 120.7 152.1 184.4 208.5 201.3 160.1 130 101 92.9 1649.4 LegendBB
8 to 10 tenths458.5 386 423 415.4 402.1 346.2 325.7 332.5 361.2 423.3 493.2 488.7 4855.6 LegendBB
Legend
  • A = WMO "3 and 5 rule" (i.e. no more than 3 consecutive and no more than 5 total missing for either temperature or precipitation)
  • B = At least 25 years
  • C = At least 20 years
  • D = At least 15 years