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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/ST-HUBERT A *
QUEBEC
Latitude: 45°31'00.000" N Longitude: 73°25'00.000" W Elevation: 27.40 m
Climate ID: 7027320 WMO ID: 71371 TC ID: YHU

* 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)-10.4 -9 -2.5 5.5 12.9 17.7 20.5 19.2 13.9 7.5 1 -6.8 5.8 A
Standard Deviation3 2.9 2.1 1.5 1.4 1 1 1.2 1.3 1.7 1.4 3.2 3.9 A
Daily Maximum (°C)-5.6 -4.2 2.2 10.9 19.1 23.8 26.4 25.1 19.6 12.6 5.1 -2.3 11.1 A
Daily Minimum (°C)-15.2 -13.7 -7.3 0 6.6 11.7 14.6 13.3 8.1 2.4 -3 -11.2 0.5 A
Extreme Maximum (°C)13.9 15.3 23.7 30.6 33.3 35 35.6 35.6 32.8 28.9 22.8 15    
Date (yyyy/dd)1995/15 1981/22 1977/30 1976/18 1962/19 1933/28 1955/10 1955/04 1931/11 1949/11 1938/07 1951/06  
Extreme Minimum (°C)-36.1 -37.2 -36.1 -15 -4.4 0 4.9 1.7 -4.9 -8.9 -22.2 -37.2    
Date (yyyy/dd)1931/24 1934/17 1938/04 1954/04 1966/07 1986/03 1982/04 1976/31 1980/29 1936/27 1949/27 1933/30  
Precipitation:
Rainfall (mm)28.7 22.1 39.2 70.5 81.8 86 98.1 90.6 98 87 78.5 39.3 819.7 A
Snowfall (cm)53 43.2 33.9 13.6 0.4 0 0 0 0 1.3 22.6 52.6 220.5 A
Precipitation (mm)79.8 65.4 75.5 86 82.2 86 98.1 90.6 98 88.5 103 93.2 1046.2 A
Average Snow Depth (cm)19 21 14 1 0 0 0 0 0 0 1 11 6 A
Median Snow Depth (cm)19 21 13 0 0 0 0 0 0 0 0 10 5 A
Snow Depth at Month-end (cm)22 22 3 0 0 0 0 0 0 0 4 18 6 C
Extreme Daily Rainfall (mm)34.3 33 39.6 45.7 49 77.7 73.4 74.4 73.6 67.3 106 47    
Date (yyyy/dd)1976/26 1973/02 1973/17 1954/16 1938/20 1929/25 1958/05 1954/31 1979/14 1932/06 1996/08 1957/26  
Extreme Daily Snowfall (cm)37.8 32.6 51.1 35.6 10.7 0 0 0 0.5 17.8 32.8 46.7    
Date (yyyy/dd)1966/23 1993/13 1971/04 1975/03 1970/06 1929/01 1929/01 1928/01 1939/25 1962/28 1968/12 1969/27  
Extreme Daily Precipitation (mm)37.3 33 52.3 45.7 49 77.7 73.4 74.4 73.6 67.3 106 58.7    
Date (yyyy/dd)1966/23 1973/02 1971/04 1954/16 1938/20 1929/25 1958/05 1954/31 1979/14 1932/06 1996/08 1969/27  
Extreme Snow Depth (cm)89 94 112 43 10 0 0 0 0 13 41 66    
Date (yyyy/dd)1959/21 1963/25 1971/05 1975/05 1963/11 1955/01 1955/01 1955/01 1955/01 1962/29 1968/13 1966/30  
Days with Maximum Temperature:
<= 0 °C23 20 10.6 0.65 0 0 0 0 0 0 5.4 18.1 77.7 A
> 0 °C8 8.3 20.4 29.4 31 30 31 31 30 31 24.6 12.9 287.6 A
> 10 °C0.15 0.23 2.9 15.9 29.9 30 31 31 29.6 20.6 5.4 0.44 197.1 A
> 20 °C0 0 0.08 2.3 13.2 24.3 30 28.1 13 2.5 0.16 0 113.7 A
> 30 °C0 0 0 0.08 0.64 1.8 4.1 2.1 0.36 0 0 0 9 A
> 35 °C0 0 0 0 0 0 0.04 0.08 0 0 0 0 0.12 A
Days with Minimum Temperature:
> 0 °C0.88 1.2 3.7 14.7 29.3 30 31 31 29.1 20.4 8.6 1.9 201.8 A
<= 2 °C30.9 27.9 29.9 21 4.8 0.16 0 0.04 3.1 15.3 25 30.5 188.6 A
<= 0 °C30.1 27.1 27.3 15.3 1.7 0.04 0 0 0.92 10.6 21.4 29.1 163.5 A
< -2 °C29.3 26 23.2 9.5 0.44 0 0 0 0.32 5.8 16.3 27.4 138.2 A
< -10 °C22.8 19.5 10 0.35 0 0 0 0 0 0 3.1 16.4 72 A
< -20 °C9.6 5.9 1.4 0 0 0 0 0 0 0 0.08 4.6 21.5 A
< - 30 °C0.54 0.15 0 0 0 0 0 0 0 0 0 0.08 0.77 A
Days with Rainfall:
>= 0.2 mm4.5 4.2 7.7 11.7 12.8 12.6 12.3 12.4 12.1 13.2 11.9 6.4 122 A
>= 5 mm1.9 1.4 2.5 4.8 5.4 5.2 5.5 5.6 5.6 5.4 4.8 2.8 50.9 A
>= 10 mm1.2 0.54 1.1 2.4 3.2 2.8 3.6 3.4 3.1 2.8 2.4 1.4 27.9 A
>= 25 mm0.19 0.19 0.15 0.31 0.32 0.64 0.80 0.68 0.92 0.56 0.60 0.12 5.5 A
Days With Snowfall:
>= 0.2 cm15.8 12.1 8.9 3.9 0.16 0 0 0 0 0.92 6.6 13.9 62.2 A
>= 5 cm3.4 2.7 2.3 0.69 0.04 0 0 0 0 0.08 1.2 3.4 13.9 A
>= 10 cm1.4 1 0.62 0.31 0 0 0 0 0 0 0.72 1.7 5.7 A
>= 25 cm0 0.19 0.08 0.08 0 0 0 0 0 0 0 0.04 0.39 A
Days with Precipitation:
>= 0.2 mm17.7 14 13.6 13.6 12.8 12.6 12.3 12.4 12.1 13.6 15.8 17.3 167.9 A
>= 5 mm5 4.1 5 5.6 5.4 5.2 5.5 5.6 5.6 5.4 6.2 5.9 64.7 A
>= 10 mm2.6 1.9 2.2 2.9 3.2 2.8 3.6 3.4 3.1 2.9 3.3 3.4 35.3 A
>= 25 mm0.33 0.46 0.31 0.46 0.40 0.64 0.80 0.68 0.92 0.56 0.76 0.40 6.7 A
Days with Snow Depth:
>= 1 cm28.8 26.6 21.4 4.3 0 0 0 0 0 0.12 7.2 23 111.5 C
>= 5 cm24.9 22.5 17.2 2.4 0 0 0 0 0 0.04 3.5 18.8 89.3 C
>= 10 cm20.8 19.4 14.2 1.2 0 0 0 0 0 0 1.4 14.8 71.7 C
>= 20 cm14.7 14.3 10.2 0.42 0 0 0 0 0 0 0.44 6.5 46.5 C
Wind:
Speed (km/h)18.1 16.8 17.6 17.2 15.5 14.7 13.1 12.1 13.7 15.3 16.4 16.5 15.6 A
Most Frequent DirectionSW SW N SW SW SW SW SW S S SW SW SW A
Maximum Hourly Speed (km/h)80 93 103 93 80 72 64 63 69 72 92 80    
Date (yyyy/dd)1972/25 1956/25 1956/11 1975/19 1956/14 1957/29 1955/04 1994/14 1989/23 1964/03 1955/17 1972/13  
Maximum Gust Speed (km/h)113 145 137 122 113 105 113 109 100 105 130 113    
Date (yyyy/dd)1996/27 1956/25 1956/11 1981/14 1962/24 1957/29 1972/13 1960/29 1956/06 1972/08 1975/11 1972/13  
Direction of Maximum GustSW SW S W SW SW NE W SW SW SW W SW  
Days with Winds >= 52 km/h2.4 1.4 1.7 1.1 0.9 0.7 0.4 0.4 0.7 1.2 1.6 1.6 14.1 C
Days with Winds >= 63 km/h0.9 0.5 0.6 0.3 0.3 0.3 0.1 0.1 0.3 0.2 0.6 0.5 4.8 C
Degree Days:
Above 24 °C0 0 0 0 0.1 2 5.8 3.5 0.5 0 0 0 11.9 C
Above 18 °C0 0 0 0.4 9.5 40.4 88.6 64.9 13.6 0.5 0 0 217.9 C
Above 15 °C0 0 0 2.3 28.8 96.1 172.2 135.8 36.8 3.1 0.1 0 475.3 C
Above 10 °C0 0 0.7 14.6 108.5 232.7 326.3 285.3 127.3 26.4 2.9 0 1124.6 C
Above 5 °C0.2 0.8 6.2 63.3 245.9 382.2 481.3 440.3 267 100.9 19.6 0.9 2008.3 C
Above 0 °C5.1 7.7 39.7 172.1 400 532.2 636.3 595.3 416.7 233.9 78.5 11.6 3129.2 C
Below 0 °C333.1 260.7 118.5 7.6 0 0 0 0 0 0.9 47.5 222.1 990.4 C
Below 5 °C483.2 395.1 239.9 48.8 0.9 0 0 0 0.3 22.8 138.6 366.4 1695.9 C
Below 10 °C638 535.7 389.4 150.1 18.5 0.6 0 0 10.6 103.3 271.9 520.5 2638.5 C
Below 15 °C793 677 543.7 287.8 93.9 14 1 5.5 70.1 235 419.1 675.5 3815.5 C
Below 18 °C886 761.8 636.7 375.9 167.5 48.3 10.3 27.6 136.8 325.5 509 768.5 4653.9 C
Humidex:
Extreme Humidex15.4 15.5 23.4 34.7 38.7 47.2 46.2 46.9 41.8 34.5 24.9 18    
Date (yyyy/dd)1995/15 1981/21 1977/30 1990/27 1962/18 1994/17 2002/02 1975/01 1961/04 1970/09 1989/16 1998/07  
Days with Humidex >= 300 0 0 0.1 2.3 9.2 17.5 14.1 3.9 0.1 0 0 47.1 A
Days with Humidex >= 350 0 0 0 0.6 2.7 6.5 4.3 0.8 0 0 0 14.9 A
Days with Humidex >= 400 0 0 0 0 0.4 1.1 0.7 0.1 0 0 0 2.3 A
Wind Chill:
Extreme Wind Chill-48.6 -45.8 -37.6 -25.7 -10 -1.7 4 0.8 -4.9 -13.5 -30.2 -45.4    
Date (yyyy/dd)1976/23 1967/12 1989/07 1995/05 1978/01 1980/09 1982/04 1987/27 2000/28 1966/31 1958/30 1980/25  
Days with Wind Chill < -2017.9 14 5.6 0.2 0 0 0 0 0 0 0.4 10.7 48.8 A
Days with Wind Chill < -307.1 3.1 0.5 0 0 0 0 0 0 0 0 2.8 13.5 A
Days with Wind Chill < -400.6 0.1 0 0 0 0 0 0 0 0 0 0.1 0.8 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 0.4 0.9 A
Average Relative Humidity - 0600LST (%)74.6 75.1 76.9 78.3 77.8 81.2 84.7 90 90.9 85.9 82.5 80.4 81.5 A
Average Relative Humidity - 1500LST (%)68.8 65.6 62.1 53.8 51.4 55.2 56.3 58.3 61.5 62.2 69.5 72.4 61.4 A
Pressure:
Average Station Pressure (kPa)101.3 101.4 101.2 101 101 100.9 101 101.2 101.3 101.4 101.3 101.4 101.2 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
Visibility (hours with):
< 1 km11.9 11.6 12.2 6.5 2.5 2.5 2.4 4.7 4.8 8.5 11.4 14.1 93.1 C
1 to 9 km174.4 135.4 110.6 73.5 60.3 79.3 81.9 94.4 91 81.4 122.5 155.2 1259.9 C
> 9 km557.7 531.5 621.2 639.9 681.2 638.2 659.7 644.9 624.2 654.1 586.1 574.8 7413.5 C
Cloud Amount (hours with):
0 to 2 tenths189.5 193.8 217.3 174.8 189.4 178.7 211.1 207.4 199.5 184.4 130.4 168.9 2245.3 C
3 to 7 tenths103.2 102.5 114.6 127.3 162.8 191.1 214.4 197.7 161.4 132.8 103.2 92.2 1703.1 C
8 to 10 tenths451.4 381.6 412.1 417.9 391.8 350.2 318.4 338.9 359.1 426.7 486.4 482.9 4817.6 C


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Date Modified: 2013-02-04

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