Calculation Information for 1981 to 2010 Canadian Normals Data

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 1981 and 2010 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.

Metadata including Station Name, Province, Country, Time Zone, Climate Id, WMO Id, TC Id, Latitude(dd mm), Longitude(ddd mm), Latitude(decimal degrees), Longitude(decimal degrees), Elevation(m), and Station Status
Station Name: VANCOUVER INT'L A
Province: BC Latitude (dd mm): 49 11 N
Country: CAN Longitude (ddd mm): 123 11 W
Time Zone: PST Latitude (decimal degrees): 49.2 N
Climate Id: 1108447 Longitude (decimal degrees): -123.18
WMO Id: 71892 Elevation (m): 4.3
TC Id: YVR Station Status: Active
Element metadata including Begin Year, End Year, Total Number of Years, Missing Years, Total Count of Observations and % of Possible Observations
 Begin Year End Year Total Number of Years Missing Years Total Count of Observations % of Possible Observations
Temperature:
Daily Average (°C)1981 2010 30 1 10892 99.7
Standard Deviation1981 2010 30 1 10892 99.7
Daily Maximum (°C)1981 2010 30 1 10892 99.7
Daily Minimum (°C)1981 2010 30 1 10892 99.7
Precipitation:
Rainfall (mm)1981 2010 30 1 10896 99.7
Snowfall (cm)1981 2010 30 1 10896 99.7
Precipitation (mm)1981 2010 30 1 10896 99.7
Average Snow Depth (cm)1981 2010 30 1 10896 99.7
Median Snow Depth (cm)1981 2010 30 1 10896 99.7
Snow Depth at Month-end (cm)1981 2010 30 0 359 100.0
Days with Maximum Temperature:
<= 0 °C1981 2010 30 1 10774 98.6
> 0 °C1981 2010 30 1 10774 98.6
> 10 °C1981 2010 30 1 10774 98.6
> 20 °C1981 2010 30 1 10774 98.6
> 30 °C1981 2010 30 1 10774 98.6
> 35 °C1981 2010 30 1 10774 98.6
Days with Minimum Temperature:
> 0 °C1981 2010 30 1 10774 98.6
<= 2 °C1981 2010 30 1 10774 98.6
<= 0 °C1981 2010 30 1 10774 98.6
< -2 °C1981 2010 30 1 10774 98.6
< -10 °C1981 2010 30 1 10774 98.6
< -20 °C1981 2010 30 1 10774 98.6
< - 30 °C1981 2010 30 1 10774 98.6
Days with Rainfall:
>= 0.2 mm1981 2010 30 1 10896 99.7
>= 5 mm1981 2010 30 1 10896 99.7
>= 10 mm1981 2010 30 1 10896 99.7
>= 25 mm1981 2010 30 1 10896 99.7
Days With Snowfall:
>= 0.2 cm1981 2010 30 1 10896 99.7
>= 5 cm1981 2010 30 1 10896 99.7
>= 10 cm1981 2010 30 1 10896 99.7
>= 25 cm1981 2010 30 1 10896 99.7
Days with Precipitation:
>= 0.2 mm1981 2010 30 1 10896 99.7
>= 5 mm1981 2010 30 1 10896 99.7
>= 10 mm1981 2010 30 1 10896 99.7
>= 25 mm1981 2010 30 1 10896 99.7
Days with Snow Depth:
>= 1 cm1981 2010 30 1 10896 99.7
>= 5 cm1981 2010 30 1 10896 99.7
>= 10 cm1981 2010 30 1 10896 99.7
>= 20 cm1981 2010 30 1 10896 99.7
Wind:
Speed (km/h)1981 2010 30 0 262859 100.0
Most Frequent Direction1981 2010 30 0 262856 100.0
Days with Winds >= 52 km/h1981 2010 30 1 10803 98.9
Days with Winds >= 63 km/h1981 2010 30 1 10803 98.9
Degree Days:
Above 24 °C1981 2010 30 1 10774 98.6
Above 18 °C1981 2010 30 1 10774 98.6
Above 15 °C1981 2010 30 1 10774 98.6
Above 10 °C1981 2010 30 1 10774 98.6
Above 5 °C1981 2010 30 1 10774 98.6
Above 0 °C1981 2010 30 1 10774 98.6
Below 0 °C1981 2010 30 1 10774 98.6
Below 5 °C1981 2010 30 1 10774 98.6
Below 10 °C1981 2010 30 1 10774 98.6
Below 15 °C1981 2010 30 1 10774 98.6
Below 18 °C1981 2010 30 1 10774 98.6
Bright Sunshine:
Total Hours1981 2008 21 7 170232 96.7
Days with measureable1981 2008 21 7 170232 96.7
% of possible daylight hours1981 2008 21 7 170232 96.7
Humidex:
Days with Humidex >= 301981 2010 30 0 262841 100.0
Days with Humidex >= 351981 2010 30 0 262841 100.0
Days with Humidex >= 401981 2010 30 0 262841 100.0
Wind Chill:
Days with Wind Chill < -201981 2010 30 0 262855 100.0
Days with Wind Chill < -301981 2010 30 0 262855 100.0
Days with Wind Chill < -401981 2010 30 0 262855 100.0
Humidity:
Average Vapour Pressure (kPa)1981 2010 30 0 262841 100.0
Average Relative Humidity - 0600LST (%)1981 2010 30 0 10952 100.0
Average Relative Humidity - 1500LST (%)1981 2010 30 0 10955 100.0
Pressure:
Average Station Pressure (kPa)1981 2010 30 0 262855 100.0
Average Sea Level Pressure (kPa)1981 2010 30 0 262847 100.0
Visibility (hours with):
< 1 km1981 2010 28 4 227160 86.4
1 to 9 km1981 2010 28 4 227160 86.4
> 9 km1981 2010 28 4 227160 86.4
Cloud Amount (hours with):
0 to 2 tenths1981 2010 28 4 226416 86.1
3 to 7 tenths1981 2010 28 4 226416 86.1
8 to 10 tenths1981 2010 28 4 226416 86.1
Frost-Free:
Average Date of Last Spring Frost1981 2009 26 2 26 89.7
Average Date of First Fall Frost1981 2009 26 2 26 89.7
Average Length of Frost-Free Period1981 2009 26 2 26 89.7
Probability of last temperature in spring of 0 °C or lower on or after indicated dates
10 %1938 2009 71 3 68 94.4
25 %1938 2009 71 3 68 94.4
33 %1938 2009 71 3 68 94.4
50 %1938 2009 71 3 68 94.4
66 %1938 2009 71 3 68 94.4
75 %1938 2009 71 3 68 94.4
90 %1938 2009 71 3 68 94.4
Probability of first temperature in fall of 0 °C or lower on or after indicated dates
10 %1938 2009 71 3 68 94.4
25 %1938 2009 71 3 68 94.4
33 %1938 2009 71 3 68 94.4
50 %1938 2009 71 3 68 94.4
66 %1938 2009 71 3 68 94.4
75 %1938 2009 71 3 68 94.4
90 %1938 2009 71 3 68 94.4
Probability of frost-free period equal to or less than indicated period (Days)
10 %1938 2009 71 3 68 94.4
25 %1938 2009 71 3 68 94.4
33 %1938 2009 71 3 68 94.4
50 %1938 2009 71 3 68 94.4
66 %1938 2009 71 3 68 94.4
75 %1938 2009 71 3 68 94.4
90 %1938 2009 71 3 68 94.4