Canadian Climate Normals 1971-2000 Station 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.

Metadata including Station Name, Province, Latitude, Longitude, Elevation, Climate ID, WMO ID, TC ID
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.

1971 to 2000 Canadian Climate Normals station data
 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Temperature:
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 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
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   Legend
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   Legend
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 LegendAA
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 LegendAA
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 LegendAA
Average Snow Depth (cm)29 36 32 11 0 0 0 0 0 0 3 16 11 LegendAA
Median Snow Depth (cm)28 35 31 9 0 0 0 0 0 0 0 15 10 LegendAA
Snow Depth at Month-end (cm)29 42 21 3 0 0 0 0 0 1 8 26 11 LegendAA
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   Legend
Extreme Daily Snowfall (cm)44 47.8 58.6 37.8 18 21.8 0 0 5.1 22.4 43.8 45.7   Legend
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   Legend
Extreme Snow Depth (cm)131 147 152 119 29 20 0 0 0 28 65 88   Legend
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 LegendAA
> 0 °C9.1 7.7 17.2 26.5 30.9 30 31 31 30 30.6 23.9 12.7 280.6 LegendAA
> 10 °C0.50 0.23 0.87 4.5 17.7 26 30.4 30.6 27 13 3.9 0.67 155.5 LegendAA
> 20 °C0 0 0 0.13 3.2 10.7 20.1 17.4 5.1 0.30 0 0 57 LegendAA
> 30 °C0 0 0 0 0 0.07 0.33 0.27 0 0 0 0 0.67 LegendAA
> 35 °C0 0 0 0 0 0 0 0 0 0 0 0 0 LegendAA
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 LegendAA
<= 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 LegendAA
<= 0 °C30.4 27.5 29.4 24.5 10.7 1.6 0 0 0.23 9.4 22.7 29.5 186 LegendAA
< -2 °C29.4 26.5 25.5 16.4 3.5 0.10 0 0 0 2.7 15.5 26.6 146.2 LegendAA
< -10 °C19 18.3 12.2 0.90 0 0 0 0 0 0 1.3 11 62.6 LegendAA
< -20 °C1.6 3.4 0.80 0 0 0 0 0 0 0 0 0.30 6.1 LegendAA
< - 30 °C0 0.10 0 0 0 0 0 0 0 0 0 0 0.10 LegendAA
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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
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 LegendAA
>= 5 cm5.4 4.9 4.9 3 0.80 0.30 0 0 0 0.70 2.4 5.3 27.7 LegendAA
>= 10 cm2.8 2.4 2.5 1.3 0.23 0.13 0 0 0 0.30 0.80 2.4 12.9 LegendAA
>= 25 cm0.40 0.40 0.37 0.10 0 0 0 0 0 0 0.13 0.37 1.8 LegendAA
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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
>= 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 LegendAA
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 LegendAA
>= 5 cm27.6 24.9 27.8 16.8 0.73 0.23 0 0 0 0.80 5.5 20.4 124.8 LegendAA
>= 10 cm25 22.8 25.1 11.4 0.30 0.13 0 0 0 0.20 4.1 16.7 105.7 LegendAA
>= 20 cm19.9 19.1 20.1 5.9 0.03 0.03 0 0 0 0 0.97 11 77 LegendAA
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 LegendAA
Most Frequent DirectionW W W SW SW SW SW SW SW SW W W SW LegendAA
Maximum Hourly Speed (km/h)117 105 83 80 84 77 77 77 77 83 96 107   Legend
Maximum Gust Speed (km/h)172 145 135 116 114 116 105 113 130 148 133 159   Legend
Direction of Maximum GustS W W SW S E NW S SW SW W SE S Legend
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 LegendAA
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 LegendAA
Degree Days:
Above 24 °C0 0 0 0 0 0 0.1 0.1 0 0 0 0 0.2 LegendAA
Above 18 °C0 0 0 0 0.1 3.7 20.8 17.7 1 0.1 0 0 43.3 LegendAA
Above 15 °C0 0 0 0 2.3 18.4 66.1 57.6 8.2 0.6 0 0 153.1 LegendAA
Above 10 °C0 0 0 1.2 21.3 83.9 191.2 178.4 65.5 8.9 1.1 0 551.5 LegendAA
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 LegendAA
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 LegendAA
Below 0 °C235.4 228.8 140.1 25.1 1.1 0 0 0 0 1.9 35.9 148.2 816.7 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
Evaporation:
Lake Evaporation (mm)0 0 0 0 0 3.5 3.7 3.2 2.1 0 0 0 0 LegendAA
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 LegendCC
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 LegendCC
% 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 LegendCC
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   LegendBB
Humidex:
Extreme Humidex12.7 13.4 17.5 24.8 29.6 37 40.4 39 34.3 27.3 25.7 18   Legend
Days with Humidex >= 300 0 0 0 0 0.9 3.9 3.5 0.2 0 0 0 8.5 LegendAA
Days with Humidex >= 350 0 0 0 0 0.1 0.6 0.2 0 0 0 0 0.8 LegendAA
Days with Humidex >= 400 0 0 0 0 0 0 0 0 0 0 0 0 LegendAA
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   Legend
Days with Wind Chill < -2015.3 15 8.7 0.3 0 0 0 0 0 0 0.6 8 48 LegendAA
Days with Wind Chill < -302.7 3.4 0.9 0 0 0 0 0 0 0 0 0.6 7.6 LegendAA
Days with Wind Chill < -400 0.3 0 0 0 0 0 0 0 0 0 0 0.4 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
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 LegendAA
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 LegendBB
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 LegendBB
> 9 km570.3 507 543 512.2 574.3 587.7 643.4 639.4 622.6 619 560.3 559.1 6938.2 LegendBB
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 LegendBB
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 LegendBB
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 LegendBB
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