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INTERRUPTION IN DATA AVAILABILITY. Please be advised that we are currently experiencing data feed issues on our daily data report tables for August 5th, 6th, 7th, and 13th, 2017. We thank you for your patience during this time of difficulty as we are working in rectifying this issue as soon as possible. Do not hesitate to contact us at ec.services.climatiques-climate.services.ec@canada.ca if you have any further questions or concerns.

Canadian Climate Normals 1971-2000 Station Data

Temperature and Precipitation Graph
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Normals 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.

MONTREAL/PIERRE ELLIOTT TRUDEAU INTL A *
QUEBEC

* This station meets WMO standards for temperature and precipitation.

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Normals Station Data
(all elements)
Temperature
1971 to 2000 Canadian Climate Normals station data
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 Deviation 2.9 3.0 2.3 1.7 1.7 1.2 1.0 1.1 1.4 1.6 1.6 3.2 0.9 A
Daily Maximum (°C) -5.7 -3.9 2.2 10.7 19.0 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 15.0 25.6 30.0 33.9 35.0 35.6 37.6 33.5 28.3 21.7 18.0
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 -15.0 -4.4 0.0 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
1971 to 2000 Canadian Climate Normals station data
Precipitation
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
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 36.0 13.1 0.2 0.0 0.0 0.0 0.0 2.2 21.9 48.3 217.5 A
Precipitation (mm) 78.3 61.5 73.6 78.0 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 0.0 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) 47.0 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
1971 to 2000 Canadian Climate Normals station data
Days with Maximum Temperature
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
<= 0 °C 23.2 19.7 10.6 0.6 0.0 0.0 0.0 0.0 0.0 0.0 5.0 18.3 77.4 A
> 0 °C 7.8 8.6 20.4 29.4 31.0 30.0 31.0 31.0 30.0 31.0 25.0 12.7 287.9 A
> 10 °C 0.1 0.2 3.2 15.3 29.7 30.0 31.0 31.0 29.7 20.9 5.7 0.6 197.5 A
> 20 °C 0.0 0.0 0.1 2.1 12.4 23.9 30.0 28.2 13.7 2.4 0.0 0.0 112.7 A
> 30 °C 0.0 0.0 0.0 0.0 0.6 1.5 3.2 1.8 0.4 0.0 0.0 0.0 7.6 A
> 35 °C 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 A
Days with Minimum Temperature
1971 to 2000 Canadian Climate Normals station data
Days with Minimum Temperature
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
> 0 °C 0.9 1.3 4.9 17.0 30.3 30.0 31.0 31.0 29.5 23.3 11.0 2.0 212.2 A
<= 2 °C 30.8 27.8 29.6 18.9 2.1 0.1 0.0 0.0 1.4 12.8 23.7 30.4 177.6 A
<= 0 °C 30.1 27.0 26.1 13.0 0.7 0.0 0.0 0.0 0.5 7.7 19.0 29.0 153.1 A
< -2 °C 29.1 25.8 22.2 8.1 0.2 0.0 0.0 0.0 0.0 3.5 14.2 27.0 130.1 A
< -10 °C 22.3 18.2 9.1 0.4 0.0 0.0 0.0 0.0 0.0 0.0 2.1 15.2 67.3 A
< -20 °C 8.2 4.8 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.2 16.9 A
< - 30 °C 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.5 A
Days with Rainfall
1971 to 2000 Canadian Climate Normals station data
Days with Rainfall
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 0.2 mm 4.3 4.2 7.2 11.3 12.9 13.1 12 12.3 12 12.7 11.2 6.1 119.4 A
>= 5 mm 1.6 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 mm 1 0.63 1 2.1 2.7 2.9 3 3.3 2.9 2.3 2.3 1.2 25.3 A
>= 25 mm 0.17 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
1971 to 2000 Canadian Climate Normals station data
Days With Snowfall
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 0.2 cm 15.7 11.6 9.3 3.5 0.10 0 0 0 0 1 6 13.1 60.3 A
>= 5 cm 3.4 2.7 2.2 0.93 0 0 0 0 0 0.14 1.5 3.4 14.3 A
>= 10 cm 1.3 1.1 0.87 0.30 0 0 0 0 0 0.03 0.63 1.4 5.6 A
>= 25 cm 0.07 0.10 0.07 0.10 0 0 0 0 0 0 0 0.03 0.37 A
Days with Precipitation
1971 to 2000 Canadian Climate Normals station data
Days with Precipitation
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 0.2 mm 16.9 13.2 13.7 12.8 13.0 13.1 12.1 12.3 12.0 13.2 15.0 16.0 163.3 A
>= 5 mm 4.6 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 mm 2.5 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 mm 0.4 0.1 0.4 0.4 0.4 0.5 0.8 0.7 1.0 0.5 0.6 0.2 6.1 A
Days with Snow Depth
1971 to 2000 Canadian Climate Normals station data
Days with Snow Depth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 1 cm 28.7 26.4 21.6 4 0 0 0 0 0 0.13 6.3 22 109.1 A
>= 5 cm 24.3 22.4 17.2 2.4 0 0 0 0 0 0 3.3 17.2 86.8 A
>= 10 cm 19.5 18.2 13.4 1.2 0 0 0 0 0 0 1.1 11.9 65.4 A
>= 20 cm 10.1 12 7.6 0.33 0 0 0 0 0 0 0.10 2.9 33.1 A
Wind
1971 to 2000 Canadian Climate Normals station data
Wind
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
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 Direction W 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 Speed SW N NE W SW NE SW NW NE SW SW W
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 Gust SW SW S SW SW S W S SW SW S SW
Days with Winds >= 52 km/h 2.5 1.2 1.6 1.0 0.8 0.5 0.7 0.4 0.3 0.9 1.7 2.0 13.5 C
Days with Winds >= 63 km/h 0.6 0.2 0.3 0.3 0.2 0.2 0.2 0.1 0.0 0.1 0.6 0.4 3.3 C
Degree Days
1971 to 2000 Canadian Climate Normals station data
Degree Days
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Above 24 °C 0 0 0 0 0.1 2 6.1 3.2 0.5 0 0 0 11.9 A
Above 18 °C 0 0 0 0.4 10.6 46.3 97.1 70.6 16.1 0.4 0 0 241.6 A
Above 15 °C 0 0 0 2.2 32.7 106.1 182.9 146.1 45.5 3.4 0 0 518.7 A
Above 10 °C 0 0 0.5 15.7 117.8 244 337.2 297.5 146.5 30.9 2.8 0 1192.9 A
Above 5 °C 0.2 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 °C 5.6 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 °C 322.4 246.8 113.8 7.7 0 0 0 0 0 0.5 40.4 208.9 940.5 A
Below 5 °C 472 380.7 232.3 46.7 0.9 0 0 0 0.1 17.9 124.9 351.7 1627.1 A
Below 10 °C 626.8 521.2 380.8 144 16 0.5 0 0.1 7.6 90.5 255 505.5 2547.9 A
Below 15 °C 781.8 662.5 535.3 280.6 85.9 12.6 0.7 3.6 56.5 218 402.2 660.5 3700.1 A
Below 18 °C 874.8 747.3 628.3 368.8 156.7 42.8 7.9 21.1 117.2 308 492.2 753.5 4518.7 A
Bright Sunshine
1971 to 2000 Canadian Climate Normals station data
Bright Sunshine
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Total Hours 101.6 123.9 158.9 173.3 229.7 245.5 274.3 240.5 174.6 140.0 86.1 80.2 2028.7 C
Days with measurable 21.3 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 hours 35.8 42.4 43.1 42.8 49.8 52.4 57.9 55.0 46.3 41.1 30.0 29.5 43.8 C
Extreme Daily 9.1 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
1971 to 2000 Canadian Climate Normals station data
Humidex
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Extreme Humidex 13.5 14.7 23.2 33.8 38.7 45.0 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 >= 30 0.0 0.0 0.0 0.1 2.1 8.5 17.0 13.3 3.7 0.1 0.0 0.0 44.7 A
Days with Humidex >= 35 0.0 0.0 0.0 0.0 0.5 2.4 6.0 3.9 0.7 0.0 0.0 0.0 13.5 A
Days with Humidex >= 40 0.0 0.0 0.0 0.0 0.0 0.3 1.2 0.6 0.1 0.0 0.0 0.0 2.1 A
Wind Chill
1971 to 2000 Canadian Climate Normals station data
Wind Chill
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Extreme Wind Chill -49 -46 -43 -26 -10 -2 4 1 -5 -11 -31 -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 < -20 17.7 13.4 5.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.3 10.4 47.1 A
Days with Wind Chill < -30 6.2 2.5 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5 11.5 A
Days with Wind Chill < -40 0.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.9 A
Humidity
1971 to 2000 Canadian Climate Normals station data
Humidity
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
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
1971 to 2000 Canadian Climate Normals station data
Pressure
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
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
1971 to 2000 Canadian Climate Normals station data
Radiation
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
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)
1971 to 2000 Canadian Climate Normals station data
Visibility (hours with)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
< 1 km 8.9 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 km 161.3 124 107.2 61.1 43.4 56.4 56.6 75.5 66.7 69.8 114.9 155.2 1092.1 B
> 9 km 573.8 544.3 627.2 653.5 698.9 662.4 687 667 650.6 668.4 598.4 579.2 7610.8 B
Cloud Amount (hours with)
1971 to 2000 Canadian Climate Normals station data
Cloud Amount (hours with)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
0 to 2 tenths 187.7 194.7 217.3 184 189.8 189.4 209.8 210.2 198.7 190.8 125.8 162.5 2260.6 B
3 to 7 tenths 97.8 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 tenths 458.5 386 423 415.4 402.1 346.2 325.7 332.5 361.2 423.3 493.2 488.7 4855.6 B

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
Station / Element Metadata

Statistics listed below are provided as a guide to determine the validity of Normals and Extremes calculations. For example, a station with 30 years of record between 1971 and 2000 with no missing years would be a more reliable normal than a station with 15 years of record and 2 missing years. Less than 100% possible observations indicates that out of the total number of observations used, some records were missing.

MONTREAL/PIERRE ELLIOTT TRUDEAU INTL A

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