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/ST-HUBERT 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) -10.4 -9.0 -2.5 5.5 12.9 17.7 20.5 19.2 13.9 7.5 1.0 -6.8 5.8 A
Standard Deviation 3.0 2.9 2.1 1.5 1.4 1.0 1.0 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 0.0 6.6 11.7 14.6 13.3 8.1 2.4 -3.0 -11.2 0.5 A
Extreme Maximum (°C) 13.9 15.3 23.7 30.6 33.3 35.0 35.6 35.6 32.8 28.9 22.8 15.0
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 -15.0 -4.4 0.0 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
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) 28.7 22.1 39.2 70.5 81.8 86.0 98.1 90.6 98.0 87.0 78.5 39.3 819.7 A
Snowfall (cm) 53.0 43.2 33.9 13.6 0.4 0.0 0.0 0.0 0.0 1.3 22.6 52.6 220.5 A
Precipitation (mm) 79.8 65.4 75.5 86.0 82.2 86.0 98.1 90.6 98.0 88.5 103.0 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 33.0 39.6 45.7 49.0 77.7 73.4 74.4 73.6 67.3 106.0 47.0
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 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 33.0 52.3 45.7 49.0 77.7 73.4 74.4 73.6 67.3 106.0 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
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 23.0 20.0 10.6 0.7 0.0 0.0 0.0 0.0 0.0 0.0 5.4 18.1 77.7 A
> 0 °C 8.0 8.3 20.4 29.4 31.0 30.0 31.0 31.0 30.0 31.0 24.6 12.9 287.6 A
> 10 °C 0.2 0.2 2.9 15.9 29.9 30.0 31.0 31.0 29.6 20.6 5.4 0.4 197.1 A
> 20 °C 0.0 0.0 0.1 2.3 13.2 24.3 30.0 28.1 13.0 2.5 0.2 0.0 113.7 A
> 30 °C 0.0 0.0 0.0 0.1 0.6 1.8 4.1 2.1 0.4 0.0 0.0 0.0 9.0 A
> 35 °C 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1 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 1.2 3.7 14.7 29.3 30.0 31.0 31.0 29.1 20.4 8.6 1.9 201.8 A
<= 2 °C 30.9 27.9 29.9 21.0 4.8 0.2 0.0 0.0 3.1 15.3 25.0 30.5 188.6 A
<= 0 °C 30.1 27.1 27.3 15.3 1.7 0.0 0.0 0.0 0.9 10.6 21.4 29.1 163.5 A
< -2 °C 29.3 26.0 23.2 9.5 0.4 0.0 0.0 0.0 0.3 5.8 16.3 27.4 138.2 A
< -10 °C 22.8 19.5 10.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 3.1 16.4 72.0 A
< -20 °C 9.6 5.9 1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 4.6 21.5 A
< - 30 °C 0.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.8 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 4.5 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 mm 1.9 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 mm 1.2 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 mm 0.19 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
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 15.8 12.1 8.9 3.9 0.16 0 0 0 0 0.92 6.6 13.9 62.2 A
>= 5 cm 3.4 2.7 2.3 0.69 0.04 0 0 0 0 0.08 1.2 3.4 13.9 A
>= 10 cm 1.4 1 0.62 0.31 0 0 0 0 0 0 0.72 1.7 5.7 A
>= 25 cm 0 0.19 0.08 0.08 0 0 0 0 0 0 0 0.04 0.39 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 17.7 14.0 13.6 13.6 12.8 12.6 12.3 12.4 12.1 13.6 15.8 17.3 167.9 A
>= 5 mm 5.0 4.1 5.0 5.6 5.4 5.2 5.5 5.6 5.6 5.4 6.2 5.9 64.7 A
>= 10 mm 2.6 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 mm 0.3 0.5 0.3 0.5 0.4 0.6 0.8 0.7 0.9 0.6 0.8 0.4 6.7 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 28.8 26.6 21.4 4.3 0 0 0 0 0 0.12 7.2 23 111.5 C
>= 5 cm 24.9 22.5 17.2 2.4 0 0 0 0 0 0.04 3.5 18.8 89.3 C
>= 10 cm 20.8 19.4 14.2 1.2 0 0 0 0 0 0 1.4 14.8 71.7 C
>= 20 cm 14.7 14.3 10.2 0.42 0 0 0 0 0 0 0.44 6.5 46.5 C
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) 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 Direction SW 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 Gust SW SW S W SW SW NE W SW SW SW W
Days with Winds >= 52 km/h 2.4 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/h 0.9 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
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 5.8 3.5 0.5 0 0 0 11.9 C
Above 18 °C 0 0 0 0.4 9.5 40.4 88.6 64.9 13.6 0.5 0 0 217.9 C
Above 15 °C 0 0 0 2.3 28.8 96.1 172.2 135.8 36.8 3.1 0.1 0 475.3 C
Above 10 °C 0 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 °C 0.2 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 °C 5.1 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 °C 333.1 260.7 118.5 7.6 0 0 0 0 0 0.9 47.5 222.1 990.4 C
Below 5 °C 483.2 395.1 239.9 48.8 0.9 0 0 0 0.3 22.8 138.6 366.4 1695.9 C
Below 10 °C 638 535.7 389.4 150.1 18.5 0.6 0 0 10.6 103.3 271.9 520.5 2638.5 C
Below 15 °C 793 677 543.7 287.8 93.9 14 1 5.5 70.1 235 419.1 675.5 3815.5 C
Below 18 °C 886 761.8 636.7 375.9 167.5 48.3 10.3 27.6 136.8 325.5 509 768.5 4653.9 C
Humidex
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 15.4 15.5 23.4 34.7 38.7 47.2 46.2 46.9 41.8 34.5 24.9 18.0
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 >= 30 0.0 0.0 0.0 0.1 2.3 9.2 17.5 14.1 3.9 0.1 0.0 0.0 47.1 A
Days with Humidex >= 35 0.0 0.0 0.0 0.0 0.6 2.7 6.5 4.3 0.8 0.0 0.0 0.0 14.9 A
Days with Humidex >= 40 0.0 0.0 0.0 0.0 0.0 0.4 1.1 0.7 0.1 0.0 0.0 0.0 2.3 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 -38 -26 -10 -2 4 1 -5 -14 -30 -45
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 < -20 17.9 14.0 5.6 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.4 10.7 48.8 A
Days with Wind Chill < -30 7.1 3.1 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.8 13.5 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 0.8 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 0.4 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
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) 101.3 101.4 101.2 101 101 100.9 101 101.2 101.3 101.4 101.3 101.4 101.2 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)
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 11.9 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 km 174.4 135.4 110.6 73.5 60.3 79.3 81.9 94.4 91 81.4 122.5 155.2 1259.9 C
> 9 km 557.7 531.5 621.2 639.9 681.2 638.2 659.7 644.9 624.2 654.1 586.1 574.8 7413.5 C
Cloud Amount (hours with)
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 189.5 193.8 217.3 174.8 189.4 178.7 211.1 207.4 199.5 184.4 130.4 168.9 2245.3 C
3 to 7 tenths 103.2 102.5 114.6 127.3 162.8 191.1 214.4 197.7 161.4 132.8 103.2 92.2 1703.1 C
8 to 10 tenths 451.4 381.6 412.1 417.9 391.8 350.2 318.4 338.9 359.1 426.7 486.4 482.9 4817.6 C

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/ST-HUBERT A

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