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Notices:

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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.

GANDER INT'L A *
NEWFOUNDLAND
Latitude: 48°56'47.000" N Longitude: 54°34'37.000" W Elevation: 151.20 m
Climate ID: 8401700 WMO ID: 71803 TC ID: YQX

* 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)-7.4 -7.9 -4 1.3 6.7 11.6 16 15.7 11.4 5.8 1 -4.3 3.8 A
Standard Deviation2 2.8 2.1 1.5 2 1.4 1.7 1.3 1.2 1.1 1.4 1.9 0.9 A
Daily Maximum (°C)-3.2 -3.4 0.4 5.2 11.7 17.2 21.4 20.6 15.8 9.5 4.2 -0.7 8.2 A
Daily Minimum (°C)-11.5 -12.3 -8.2 -2.6 1.7 6 10.7 10.7 6.9 2 -2.3 -7.9 -0.6 A
Extreme Maximum (°C)12.3 13.4 18.1 22.6 28.3 32.8 35.6 33.3 28.9 24.4 20.6 14.4    
Date (yyyy/dd)1983/13 1996/25 1999/29 1986/23 1972/30 1949/19 1952/08 1976/22 1948/07 1938/14 1967/04 1966/01  
Extreme Minimum (°C)-27.2 -31.1 -28.8 -17.6 -8.9 -2.8 0.6 -1.1 -1.7 -7.2 -15.7 -26.1    
Date (yyyy/dd)1957/29 1975/04 1986/10 1994/03 1962/01 1970/01 1974/08 1937/26 1972/28 1986/27 1993/25 1972/31  
Precipitation:
Rainfall (mm)29.5 24.4 34.5 47.1 71.8 80.3 83.9 96.4 101.9 98 67.9 36 771.6 A
Snowfall (cm)89.7 79.4 77.1 46.2 12.8 4.1 0 0 0.1 12.8 38.9 82 443.1 A
Precipitation (mm)111.5 98 110.4 95.4 86.3 85.2 83.9 96.4 101.9 112.4 106.7 113.8 1201.9 A
Average Snow Depth (cm)29 36 32 11 0 0 0 0 0 0 3 16 11 A
Median Snow Depth (cm)28 35 31 9 0 0 0 0 0 0 0 15 10 A
Snow Depth at Month-end (cm)29 42 21 3 0 0 0 0 0 1 8 26 11 A
Extreme Daily Rainfall (mm)34.3 51.8 60.2 68.4 64.6 38.8 96.3 98.3 63 67.4 58.2 40.6    
Date (yyyy/dd)1958/08 1984/05 1962/02 1986/11 1990/20 1992/16 1942/21 1951/05 1995/10 1981/17 1943/17 1974/10  
Extreme Daily Snowfall (cm)44 47.8 58.6 37.8 18 21.8 0 0 5.1 22.4 43.8 45.7    
Date (yyyy/dd)1987/05 1962/11 1993/18 1972/09 1994/07 1974/07 1937/01 1937/01 1949/21 1999/19 1980/19 1937/26  
Extreme Daily Precipitation (mm)46.8 57.9 67 68.4 64.6 55 96.3 98.3 63 67.4 58.2 45.7    
Date (yyyy/dd)1984/11 1962/11 1993/18 1986/11 1990/20 1994/03 1942/21 1951/05 1995/10 1981/17 1943/17 1937/26  
Extreme Snow Depth (cm)131 147 152 119 29 20 0 0 0 28 65 88    
Date (yyyy/dd)1995/29 2001/18 1982/03 2001/04 2001/02 1994/04 1955/01 1955/01 1955/01 1955/24 1997/29 2000/28  
Days with Maximum Temperature:
<= 0 °C21.9 20.6 13.8 3.5 0.10 0 0 0 0 0.37 6.1 18.3 84.6 A
> 0 °C9.1 7.7 17.2 26.5 30.9 30 31 31 30 30.6 23.9 12.7 280.6 A
> 10 °C0.50 0.23 0.87 4.5 17.7 26 30.4 30.6 27 13 3.9 0.67 155.5 A
> 20 °C0 0 0 0.13 3.2 10.7 20.1 17.4 5.1 0.30 0 0 57 A
> 30 °C0 0 0 0 0 0.07 0.33 0.27 0 0 0 0 0.67 A
> 35 °C0 0 0 0 0 0 0 0 0 0 0 0 0 A
Days with Minimum Temperature:
> 0 °C0.60 0.77 1.6 5.5 20.3 28.4 31 31 29.8 21.6 7.3 1.5 179.3 A
<= 2 °C30.8 28 30.7 27.8 18.5 4.6 0.07 0 2.2 16.4 26.3 30.3 215.7 A
<= 0 °C30.4 27.5 29.4 24.5 10.7 1.6 0 0 0.23 9.4 22.7 29.5 186 A
< -2 °C29.4 26.5 25.5 16.4 3.5 0.10 0 0 0 2.7 15.5 26.6 146.2 A
< -10 °C19 18.3 12.2 0.90 0 0 0 0 0 0 1.3 11 62.6 A
< -20 °C1.6 3.4 0.80 0 0 0 0 0 0 0 0 0.30 6.1 A
< - 30 °C0 0.10 0 0 0 0 0 0 0 0 0 0 0.10 A
Days with Rainfall:
>= 0.2 mm6.5 5.7 9.5 11.7 16 16.3 16.4 15.5 17.3 18 13.4 8.9 155.1 A
>= 5 mm2.1 1.7 2.4 3.3 4.5 5.5 5.9 5.6 6.1 5.7 4.7 2.5 50 A
>= 10 mm1.1 0.53 0.83 1.3 2.1 2.3 2.5 3.2 3.3 3.4 2.2 0.97 23.7 A
>= 25 mm0.03 0.07 0.10 0.10 0.33 0.33 0.37 0.73 0.67 0.40 0.20 0.07 3.4 A
Days With Snowfall:
>= 0.2 cm18.4 15.5 15.1 11.9 5.1 0.73 0 0 0.17 4.5 11.8 18.4 101.7 A
>= 5 cm5.4 4.9 4.9 3 0.80 0.30 0 0 0 0.70 2.4 5.3 27.7 A
>= 10 cm2.8 2.4 2.5 1.3 0.23 0.13 0 0 0 0.30 0.80 2.4 12.9 A
>= 25 cm0.40 0.40 0.37 0.10 0 0 0 0 0 0 0.13 0.37 1.8 A
Days with Precipitation:
>= 0.2 mm20.2 17.4 19.2 18.6 18.1 16.4 16.4 15.5 17.3 19.6 20.4 21.6 220.6 A
>= 5 mm7.2 6.2 6.9 6.2 5.5 5.7 5.9 5.6 6.1 6.4 7.3 7.8 76.8 A
>= 10 mm3.8 3.2 3.4 2.9 2.6 2.5 2.5 3.2 3.3 3.9 3.4 3.3 37.9 A
>= 25 mm0.50 0.63 0.60 0.40 0.40 0.37 0.37 0.73 0.67 0.60 0.40 0.60 6.3 A
Days with Snow Depth:
>= 1 cm30.1 26.9 29.6 22 2.6 0.33 0 0 0 1.9 9.7 25 148.1 A
>= 5 cm27.6 24.9 27.8 16.8 0.73 0.23 0 0 0 0.80 5.5 20.4 124.8 A
>= 10 cm25 22.8 25.1 11.4 0.30 0.13 0 0 0 0.20 4.1 16.7 105.7 A
>= 20 cm19.9 19.1 20.1 5.9 0.03 0.03 0 0 0 0 0.97 11 77 A
Wind:
Speed (km/h)24.2 23 23.1 20.6 19.3 18.3 17.1 16.9 18.4 20.1 21.9 23.4 20.5 A
Most Frequent DirectionW W W SW SW SW SW SW SW SW W W SW A
Maximum Hourly Speed (km/h)117 105 83 80 84 77 77 77 77 83 96 107    
Date (yyyy/dd)1982/10 1967/22 1993/14 1964/01 1962/01 1962/07 1958/21 1958/17 1955/22 1987/02 1987/22 1979/17  
Maximum Gust Speed (km/h)172 145 135 116 114 116 105 113 130 148 133 159    
Date (yyyy/dd)1982/10 1967/22 1965/23 1964/03 1970/27 1962/07 1959/01 1958/17 1955/21 1987/02 1986/14 1979/17  
Direction of Maximum GustS W W SW S E NW S SW SW W SE S  
Days with Winds >= 52 km/h6.4 4 4.9 1.8 1.4 0.9 0.3 0.5 1.1 2.6 3.3 6.2 33.2 A
Days with Winds >= 63 km/h3.1 1.6 1.9 0.5 0.4 0.2 0.1 0 0.4 0.8 1.6 2.8 13.3 A
Degree Days:
Above 24 °C0 0 0 0 0 0 0.1 0.1 0 0 0 0 0.2 A
Above 18 °C0 0 0 0 0.1 3.7 20.8 17.7 1 0.1 0 0 43.3 A
Above 15 °C0 0 0 0 2.3 18.4 66.1 57.6 8.2 0.6 0 0 153.1 A
Above 10 °C0 0 0 1.2 21.3 83.9 191.2 178.4 65.5 8.9 1.1 0 551.5 A
Above 5 °C0.6 0.4 1.5 11.5 84.7 202.7 342.3 331.1 191.3 57.5 12.9 1.4 1237.8 A
Above 0 °C5.9 6.9 17.6 64.6 209.6 348.9 497.3 486.1 340.7 181.3 64.6 13.7 2237.2 A
Below 0 °C235.4 228.8 140.1 25.1 1.1 0 0 0 0 1.9 35.9 148.2 816.7 A
Below 5 °C385.2 363.6 279 122 31.2 3.8 0.1 0 0.6 33.1 134.1 290.8 1643.6 A
Below 10 °C539.6 504.6 432.5 261.7 122.8 34.9 3.9 2.3 24.8 139.6 272.4 444.5 2783.6 A
Below 15 °C694.6 645.9 587.5 410.5 258.8 119.5 33.8 36.5 117.4 286.2 421.3 599.5 4211.5 A
Below 18 °C787.6 730.7 680.5 500.5 349.6 194.7 81.5 89.6 200.2 378.7 511.3 692.5 5197.6 A
Evaporation:
Lake Evaporation (mm)0 0 0 0 0 3.5 3.7 3.2 2.1 0 0 0 0 A
Bright Sunshine:
Total Hours94.3 104.7 118.9 124.2 167.4 192 216.4 206.5 141.4 106.7 73 75.1 1620.5 C
Days with measureable21 19.4 22 20.8 24 24.8 27.8 27.1 24.4 23.5 20.2 19.2 274.4 C
% of possible daylight hours34.8 36.6 32.3 30.2 35.4 39.7 44.4 46.4 37.3 31.8 26.4 29.1 35.4 C
Extreme Daily8.7 10.4 11.5 13.7 15.3 15.7 15.5 14.3 12.8 9.8 9.1 8.1   B
Date (yyyy/dd)1994/31 1971/26 1994/31 1979/29 1997/30 1971/16 1994/08 1982/04 1990/01 1978/01 1977/01 1980/02  
Humidex:
Extreme Humidex12.7 13.4 17.5 24.8 29.6 37 40.4 39 34.3 27.3 25.7 18    
Date (yyyy/dd)1953/12 1996/25 1999/29 1986/24 1964/25 1999/14 1975/19 1976/22 2001/09 1967/01 1967/04 1969/05  
Days with Humidex >= 300 0 0 0 0 0.9 3.9 3.5 0.2 0 0 0 8.5 A
Days with Humidex >= 350 0 0 0 0 0.1 0.6 0.2 0 0 0 0 0.8 A
Days with Humidex >= 400 0 0 0 0 0 0 0 0 0 0 0 0 A
Wind Chill:
Extreme Wind Chill-43.4 -46.7 -44.7 -29.1 -16.7 -8.7 -3.7 -1 -6.5 -14.9 -28 -40.2    
Date (yyyy/dd)1957/29 1990/03 1986/10 1994/03 1962/01 1974/07 1992/04 2002/31 1989/28 1986/26 1993/25 1984/27  
Days with Wind Chill < -2015.3 15 8.7 0.3 0 0 0 0 0 0 0.6 8 48 A
Days with Wind Chill < -302.7 3.4 0.9 0 0 0 0 0 0 0 0 0.6 7.6 A
Days with Wind Chill < -400 0.3 0 0 0 0 0 0 0 0 0 0 0.4 A
Humidity:
Average Vapour Pressure (kPa)0.3 0.3 0.4 0.5 0.7 1 1.4 1.4 1.1 0.8 0.6 0.4 0.7 A
Average Relative Humidity - 0600LST (%)78.8 78.5 80.7 85 84.3 84.9 85.6 86.6 87.9 86.8 84.8 82.5 83.9 A
Average Relative Humidity - 1500LST (%)71.3 67.2 66.5 67.3 63.5 62.2 61.9 62.4 65.7 70.5 75 76.5 67.5 A
Pressure:
Average Station Pressure (kPa)98.9 99 99.2 99.4 99.6 99.5 99.5 99.6 99.6 99.5 99.2 99 99.3 A
Average Sea Level Pressure (kPa)100.8 100.9 101.1 101.2 101.4 101.3 101.3 101.4 101.4 101.4 101.1 100.9 101.2 A
Visibility (hours with):
< 1 km31.3 34.7 48.8 63 43.6 30.7 24.1 15.3 14.5 15.7 29.6 36.6 387.7 B
1 to 9 km142.4 135.6 152.3 144.7 126.2 101.6 76.5 89.4 82.9 109.3 130.1 148.4 1439.5 B
> 9 km570.3 507 543 512.2 574.3 587.7 643.4 639.4 622.6 619 560.3 559.1 6938.2 B
Cloud Amount (hours with):
0 to 2 tenths146.3 147.1 136.4 97.9 90.3 90.1 89 101.7 112.2 103.3 75.4 113.1 1302.6 B
3 to 7 tenths156.9 127.8 123.4 104.8 130.6 152.7 198.5 195.9 167 141.6 127.9 136.6 1763.6 B
8 to 10 tenths440.8 402.4 484.3 517.3 523.2 477.2 456.5 446.4 440.9 499.1 516.7 494.3 5699 B


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Date Modified: 2013-02-04

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