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
NANAIMO A *
BRITISH COLUMBIA
Latitude: 49°03'16.000" N Longitude: 123°52'12.000" W Elevation: 28.00 m
Climate ID: 1025370 WMO ID: TC ID: YCD

* 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)2.7 4.2 6.1 8.8 12.3 15.2 17.9 18 14.8 9.7 5.4 2.9 9.8 LegendAA
Standard Deviation1.6 1.5 1.1 1 1.2 1.1 1.1 1.1 1.2 0.8 1.6 1.7 0.6 LegendAA
Daily Maximum (°C)6.2 8.2 10.9 14.1 17.8 20.5 24 24.2 20.9 14.6 9.1 6.1 14.7 LegendAA
Daily Minimum (°C)-0.8 0 1.3 3.4 6.7 9.7 11.8 11.7 8.6 4.8 1.5 -0.4 4.9 LegendAA
Extreme Maximum (°C)15.6 18.3 21.7 26.1 34.3 34.5 36.1 36.7 33.2 29.3 19.4 17.5   Legend
Extreme Minimum (°C)-17.8 -16.7 -12.2 -5 -4.4 0.6 2.8 3.3 -1.1 -6.7 -16.1 -20   Legend
Precipitation:
Rainfall (mm)141.7 122.5 106.3 62.9 49.9 44.9 25.9 31.6 38.5 97 190.5 166.4 1077.9 LegendAA
Snowfall (cm)27.2 16.3 5.6 0.2 0 0 0 0 0 1.1 7.8 22.8 80.9 LegendAA
Precipitation (mm)169.5 140.4 112.4 63.1 49.9 44.9 25.9 31.6 38.5 97.8 198.6 190.2 1162.7 LegendAA
Average Snow Depth (cm)4 2 0 0 0 0 0 0 0 0 0 2 1 LegendAA
Median Snow Depth (cm)3 1 0 0 0 0 0 0 0 0 0 1 0 LegendAA
Snow Depth at Month-end (cm)3 2 0 0 0 0 0 0 0 0 1 5 1 LegendAA
Extreme Daily Rainfall (mm)70.6 97.3 57.4 58.7 30.8 29.9 23.6 75.6 47.2 91.7 84.1 74.4   Legend
Extreme Daily Snowfall (cm)38.6 73.7 33 4.6 1 0 0 0 0 20 32.9 47.8   Legend
Extreme Daily Precipitation (mm)70.6 97.3 57.4 58.7 30.8 29.9 23.6 75.6 47.2 91.7 84.1 74.4   Legend
Extreme Snow Depth (cm)74 66 33 1 0 0 0 0 0 0 47 74   Legend
Days with Maximum Temperature:
<= 0 °C1.3 0.13 0.03 0 0 0 0 0 0 0 0.38 1.5 3.3 LegendAA
> 0 °C29.7 28.1 31 30 31 30 31 31 30 31 29.6 29.5 362 LegendAA
> 10 °C3.3 7.6 19.1 27.3 30.9 30 31 31 30 29.1 11.3 2.7 253.2 LegendAA
> 20 °C0 0 0.03 1.8 8.2 14.4 25.1 26.2 16.3 1.8 0 0 93.8 LegendAA
> 30 °C0 0 0 0 0.17 0.87 3.2 2.8 0.40 0 0 0 7.4 LegendAA
> 35 °C0 0 0 0 0 0 0.03 0.07 0 0 0 0 0.10 LegendAA
Days with Minimum Temperature:
> 0 °C13.4 14.2 18.8 24.8 30.8 30 31 31 29.9 28.4 19.1 13.6 285 LegendAA
<= 2 °C23.9 20 18.9 10.9 1.7 0.10 0 0 0.33 7.5 17 22.9 123.2 LegendAA
<= 0 °C17.6 14 12.2 5.2 0.23 0 0 0 0.07 2.6 10.9 17.4 80.2 LegendAA
< -2 °C10.3 7.3 4.5 0.80 0 0 0 0 0 0.31 5.2 9.8 38.2 LegendAA
< -10 °C0.90 0.37 0.03 0 0 0 0 0 0 0 0.31 0.69 2.3 LegendAA
< -20 °C0 0 0 0 0 0 0 0 0 0 0 0 0 LegendAA
< - 30 °C0 0 0 0 0 0 0 0 0 0 0 0 0 LegendAA
Days with Rainfall:
>= 0.2 mm16.8 15.3 17.2 14.2 14.1 12.1 7.9 7.5 9.1 14.5 20 18.5 167.2 LegendAA
>= 5 mm8.3 6.9 6.6 4.1 3.3 3.2 1.8 1.9 2.6 5.9 10.5 9.2 64.3 LegendAA
>= 10 mm4.9 4.3 3.5 1.7 1.1 1 0.50 0.67 1.1 3.3 6.5 5.8 34.4 LegendAA
>= 25 mm1.3 0.80 0.57 0.17 0.07 0.07 0 0.17 0.07 0.79 1.9 1.6 7.5 LegendAA
Days With Snowfall:
>= 0.2 cm4.1 2.7 1.1 0.03 0.03 0 0 0 0 0.07 1.1 3.8 12.9 LegendAA
>= 5 cm1.8 0.97 0.33 0 0 0 0 0 0 0.07 0.41 1.5 5.1 LegendAA
>= 10 cm0.97 0.53 0.20 0 0 0 0 0 0 0.07 0.28 0.93 3 LegendAA
>= 25 cm0.20 0.07 0.03 0 0 0 0 0 0 0 0.03 0.14 0.47 LegendAA
Days with Precipitation:
>= 0.2 mm19 16.7 17.5 14.2 14.1 12.1 7.9 7.5 9.1 14.6 20.5 20.6 173.7 LegendAA
>= 5 mm10.1 7.8 7 4.1 3.3 3.2 1.8 1.9 2.6 5.9 10.9 10.4 69 LegendAA
>= 10 mm6 5 3.8 1.7 1.1 1 0.50 0.67 1.1 3.3 6.8 6.6 37.6 LegendAA
>= 25 mm1.5 1.1 0.63 0.17 0.07 0.07 0 0.17 0.07 0.79 2 1.9 8.5 LegendAA
Days with Snow Depth:
>= 1 cm8.7 3.7 1 0.03 0 0 0 0 0 0 1 4.7 19.1 LegendCC
>= 5 cm7 3.2 0.83 0 0 0 0 0 0 0 0.81 3.6 15.4 LegendCC
>= 10 cm5.4 2.3 0.52 0 0 0 0 0 0 0 0.56 2.5 11.3 LegendCC
>= 20 cm2.4 1.3 0.09 0 0 0 0 0 0 0 0.19 1.4 5.3 LegendCC
Wind:
Maximum Hourly Speed (km/h)51 46 48 48 37 39 46 41 41 52 52 48   Legend
Direction of Maximum Hourly SpeedSE W S S N NW N N NW NW W SW W Legend
Maximum Gust Speed (km/h)82 64 71 56 51 69 48 42 55 72 64 64   Legend
Direction of Maximum GustS W NW N S SW NW SW W S NW W S Legend
Degree Days:
Above 24 °C0 0 0 0 0 0 0.7 0.6 0 0 0 0 1.3 LegendAA
Above 18 °C0 0 0 0 1.4 8.2 31.9 31 4.6 0 0 0 77 LegendAA
Above 15 °C0 0 0 0.3 9.9 33.8 94.5 95.2 29.2 0.8 0 0 263.7 LegendAA
Above 10 °C0.1 0.3 1.5 18.2 80.2 155 244.6 246.7 144.2 30.3 2.9 0.3 924.2 LegendAA
Above 5 °C13.8 21.9 50.1 114.7 225.6 304.6 399.6 401.7 292.8 148.6 43.3 15.3 2032 LegendAA
Above 0 °C98.4 122.4 189.5 263.3 380.6 454.6 554.6 556.7 442.8 301.8 164.7 103.1 3632.4 LegendAA
Below 0 °C13.6 4.9 0.6 0 0 0 0 0 0 0 4.2 13.2 36.6 LegendAA
Below 5 °C84.1 45.8 16.2 1.4 0 0 0 0 0 1.8 32.8 80.5 262.5 LegendAA
Below 10 °C225.3 165.6 122.7 54.9 9.5 0.4 0 0 1.4 38.5 142.4 220.4 981.1 LegendAA
Below 15 °C380.3 306.6 276.2 187 94.3 29.2 4.8 3.6 36.3 164 289.5 375.2 2146.9 LegendAA
Below 18 °C473.3 391.4 369.2 276.7 178.7 93.6 35.3 32.3 101.8 256.2 379.5 468.2 3056 LegendAA
Bright Sunshine:
Total Hours56.5 79.5 131.8 176.1 226.2 222.6 291 269.3 203.1 131.6 65.7 50 1903.4 LegendAA
Days with measureable17.9 19.7 25.3 26.9 29 28 29.8 29.6 28.1 24.6 19.2 16.4 294.4 LegendAA
% of possible daylight hours20.9 27.8 35.8 42.9 47.8 46 59.6 60.4 53.6 39.2 23.8 19.4 39.8 LegendAA
Extreme Daily8.4 10.1 10.8 13.7 14.6 15.2 14.8 14.4 12.8 11 8.7 8   LegendAA
Humidex:
Extreme Humidex16 17.8 21.3 26.2 37 36.4 40.5 42.9 35.7 29.5 20.2 20.1   Legend
Wind Chill:
Extreme Wind Chill-22.4 -18.4 -14.1 -6.7 -6.7 -0.7 2.5 2.7 -2.7 -6.7 -22 -21.2   Legend
Humidity:
Average Relative Humidity - 0600LST (%)93 91.7 90.9 88.6 83 80.9 81.1 84.8 89 91.3 92.6 92.5 88.3 LegendAA
Average Relative Humidity - 1500LST (%)81.5 73.3 65 58.8 57.8 58.4 53.2 53.1 56.9 68.1 79 83.8 65.7 LegendAA
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