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Canadian Climate Normals 1971-2000

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.

NOTE!! 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.

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.

Normals from to  
January-June January-December+Year July-December
Temperature:Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
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 A
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 A
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 A
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 A
Extreme Maximum (°C)13.9 15 25.6 30 33.9 35 35.6 37.6 33.5 28.3 21.7 18    
Date (yyyy/dd)1950/25 1981/22 1945/28 1990/27 1962/19 1964/30 1953/17 1975/01 1999/04 1968/02 1948/06 2001/06  
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    
Date (yyyy/dd)1957/15 1943/15 1950/04 1954/04 1974/02 1995/05 1982/03 1957/28 1951/30 1972/20 1949/27 1980/25  
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 A
Snowfall (cm)52.5 43.3 36 13.1 0.2 0 0 0 0 2.2 21.9 48.3 217.5 A
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 A
Average Snow Depth (cm)15 18 13 1 0 0 0 0 0 0 1 8 5 A
Median Snow Depth (cm)15 18 12 0 0 0 0 0 0 0 0 7 4 A
Snow Depth at Month-end (cm)17 17 3 0 0 0 0 0 0 0 3 13 4 A
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    
Date (yyyy/dd)2006/18 1961/25 1998/09 2006/23 2006/19 1997/21 2005/05 2005/31 1979/14 1995/06 1996/08 2003/11  
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    
Date (yyyy/dd)1999/15 1954/16 1971/04 2000/09 1963/10 1942/01 1942/01 1942/01 1946/30 1988/22 1944/30 2005/16  
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    
Date (yyyy/dd)2006/18 1954/16 2001/22 2006/23 2006/19 1997/21 2005/05 2005/31 1979/14 1995/06 1996/08 2003/11  
Extreme Snow Depth (cm)61 91 102 44 8 0 0 0 0 15 33 64    
Date (yyyy/dd)1959/17 1958/22 1971/12 2001/01 1963/11 1955/01 1955/01 1955/01 1955/01 1962/29 1965/22 1970/24  
Days with Maximum Temperature:
<= 0 °C23.2 19.7 10.6 0.59 0 0 0 0 0 0 5 18.3 77.4 A
> 0 °C7.8 8.6 20.4 29.4 31 30 31 31 30 31 25 12.7 287.9 A
> 10 °C0.10 0.23 3.2 15.3 29.7 30 31 31 29.7 20.9 5.7 0.57 197.5 A
> 20 °C0 0 0.10 2.1 12.4 23.9 30 28.2 13.7 2.4 0.03 0 112.7 A
> 30 °C0 0 0 0 0.63 1.5 3.2 1.8 0.39 0 0 0 7.6 A
> 35 °C0 0 0 0 0 0 0 0.03 0 0 0 0 0.03 A
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 A
<= 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 A
<= 0 °C30.1 27 26.1 13 0.71 0 0 0 0.46 7.7 19 29 153.1 A
< -2 °C29.1 25.8 22.2 8.1 0.21 0 0 0 0 3.5 14.2 27 130.1 A
< -10 °C22.3 18.2 9.1 0.41 0 0 0 0 0 0 2.1 15.2 67.3 A
< -20 °C8.2 4.8 0.77 0 0 0 0 0 0 0 0 3.2 16.9 A
< - 30 °C0.30 0.13 0 0 0 0 0 0 0 0 0 0.07 0.50 A
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 A
>= 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 A
>= 10 mm1 0.63 1 2.1 2.7 2.9 3 3.3 2.9 2.3 2.3 1.2 25.3 A
>= 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 A
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 A
>= 5 cm3.4 2.7 2.2 0.93 0 0 0 0 0 0.14 1.5 3.4 14.3 A
>= 10 cm1.3 1.1 0.87 0.30 0 0 0 0 0 0.03 0.63 1.4 5.6 A
>= 25 cm0.07 0.10 0.07 0.10 0 0 0 0 0 0 0 0.03 0.37 A
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 A
>= 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 A
>= 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 A
>= 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 A
Days with Snow Depth:
>= 1 cm28.7 26.4 21.6 4 0 0 0 0 0 0.13 6.3 22 109.1 A
>= 5 cm24.3 22.4 17.2 2.4 0 0 0 0 0 0 3.3 17.2 86.8 A
>= 10 cm19.5 18.2 13.4 1.2 0 0 0 0 0 0 1.1 11.9 65.4 A
>= 20 cm10.1 12 7.6 0.33 0 0 0 0 0 0 0.10 2.9 33.1 A
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 A
Most Frequent DirectionW SW N N SW SW SW SW SW SW SW SW SW A
Maximum Hourly Speed (km/h)90 80 74 70 72 66 58 55 65 72 76 72    
Date (yyyy/dd)1959/22 1961/26 1971/04 1977/03 1964/09 1972/22 1956/11 1965/06 2005/29 1979/06 1975/10 2000/18  
Direction of Maximum Hourly SpeedSW N NE W SW NE SW NW NE SW SW W SW  
Maximum Gust Speed (km/h)117 138 161 106 103 111 126 105 97 117 113 103    
Date (yyyy/dd)1959/22 1956/25 1964/05 1975/19 1956/14 1957/29 1975/02 1966/09 1956/06 1979/06 1989/16 1971/11  
Direction of Maximum GustSW SW S SW SW S W S SW SW S SW CALM  
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 C
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 C
Degree Days:
Above 24 °C0 0 0 0 0.1 2 6.1 3.2 0.5 0 0 0 11.9 A
Above 18 °C0 0 0 0.4 10.6 46.3 97.1 70.6 16.1 0.4 0 0 241.6 A
Above 15 °C0 0 0 2.2 32.7 106.1 182.9 146.1 45.5 3.4 0 0 518.7 A
Above 10 °C0 0 0.5 15.7 117.8 244 337.2 297.5 146.5 30.9 2.8 0 1192.9 A
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 A
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 A
Below 0 °C322.4 246.8 113.8 7.7 0 0 0 0 0 0.5 40.4 208.9 940.5 A
Below 5 °C472 380.7 232.3 46.7 0.9 0 0 0 0.1 17.9 124.9 351.7 1627.1 A
Below 10 °C626.8 521.2 380.8 144 16 0.5 0 0.1 7.6 90.5 255 505.5 2547.9 A
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 A
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 A
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 C
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 C
% 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 C
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   A
Date (yyyy/dd)1972/31 1978/28 1971/31 1982/30 1990/25 1987/06 1994/11 1987/01 1986/01 1983/10 1987/02 1980/04  
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    
Date (yyyy/dd)1996/19 1981/22 1977/30 2002/16 1975/23 1953/21 2002/02 1975/01 1953/04 1967/03 1971/02 1982/04  
Days with Humidex >= 300 0 0 0.1 2.1 8.5 17 13.3 3.7 0.1 0 0 44.7 A
Days with Humidex >= 350 0 0 0 0.5 2.4 6 3.9 0.7 0 0 0 13.5 A
Days with Humidex >= 400 0 0 0 0 0.3 1.2 0.6 0.1 0 0 0 2.1 A
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    
Date (yyyy/dd)1976/23 1967/12 2003/03 1995/05 1978/01 1980/09 1982/01 1986/29 2000/28 1976/26 1958/30 1980/25  
Days with Wind Chill < -2017.7 13.4 5.2 0.1 0 0 0 0 0 0 0.3 10.4 47.1 A
Days with Wind Chill < -306.2 2.5 0.3 0 0 0 0 0 0 0 0 2.5 11.5 A
Days with Wind Chill < -400.6 0.1 0 0 0 0 0 0 0 0 0 0.1 0.9 A
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 A
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 A
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 A
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 A
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 A
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    
Date (yyyy/dd)1994/31 1992/29 1994/30 1992/26 1997/27 1994/10 1993/01 1995/08 1992/02 1995/01 1993/02 1989/01  
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    
Date (yyyy/dd)1993/29 1990/25 1998/23 1989/24 1997/29 1992/05 1993/05 1989/11 1990/21 1993/05 1990/13 1992/27  
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 B
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 B
> 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 B
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 B
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 B
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 B


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Date Modified: 2013-02-04

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