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: EDMONTON CITY CENTRE A
Province: ALTA Latitude (dd mm): 53 34 N
Country: CAN Longitude (ddd mm): 113 31 W
Time Zone: MST Latitude (decimal degrees): 53.57 N
Climate Id: 3012208 Longitude (decimal degrees): -113.52
WMO Id: Elevation (m): 670.6
TC Id: Station Status: Inactive
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 2004 24 0 8766 99.7
Standard Deviation1981 2004 24 0 8766 99.7
Daily Maximum (°C)1981 2004 24 0 8766 99.7
Daily Minimum (°C)1981 2004 24 0 8766 99.7
Precipitation:
Rainfall (mm)1981 2004 24 0 8766 99.7
Snowfall (cm)1981 2004 24 0 8766 99.7
Precipitation (mm)1981 2004 24 0 8766 99.7
Average Snow Depth (cm)1981 2004 24 1 8607 98.6
Median Snow Depth (cm)1981 2004 24 1 8607 98.6
Snow Depth at Month-end (cm)1981 2004 24 1 286 99.7
Days with Maximum Temperature:
<= 0 °C1981 2004 24 0 8766 99.7
> 0 °C1981 2004 24 0 8766 99.7
> 10 °C1981 2004 24 0 8766 99.7
> 20 °C1981 2004 24 0 8766 99.7
> 30 °C1981 2004 24 0 8766 99.7
> 35 °C1981 2004 24 0 8766 99.7
Days with Minimum Temperature:
> 0 °C1981 2005 25 0 8797 100.0
<= 2 °C1981 2005 25 0 8797 100.0
<= 0 °C1981 2005 25 0 8797 100.0
< -2 °C1981 2005 25 0 8797 100.0
< -10 °C1981 2005 25 0 8797 100.0
< -20 °C1981 2005 25 0 8797 100.0
< - 30 °C1981 2005 25 0 8797 100.0
Days with Rainfall:
>= 0.2 mm1981 2004 24 0 8766 99.7
>= 5 mm1981 2004 24 0 8766 99.7
>= 10 mm1981 2004 24 0 8766 99.7
>= 25 mm1981 2004 24 0 8766 99.7
Days With Snowfall:
>= 0.2 cm1981 2004 24 0 8766 99.7
>= 5 cm1981 2004 24 0 8766 99.7
>= 10 cm1981 2004 24 0 8766 99.7
>= 25 cm1981 2004 24 0 8766 99.7
Days with Precipitation:
>= 0.2 mm1981 2004 24 0 8766 99.7
>= 5 mm1981 2004 24 0 8766 99.7
>= 10 mm1981 2004 24 0 8766 99.7
>= 25 mm1981 2004 24 0 8766 99.7
Days with Snow Depth:
>= 1 cm1981 2004 24 1 8581 98.3
>= 5 cm1981 2004 24 1 8581 98.3
>= 10 cm1981 2004 24 1 8581 98.3
>= 20 cm1981 2004 24 1 8581 98.3
Wind:
Speed (km/h)1981 2004 24 0 209949 99.5
Most Frequent Direction1981 2004 24 0 209945 99.8
Degree Days:
Above 24 °C1981 2004 24 0 8766 99.7
Above 18 °C1981 2004 24 0 8766 99.7
Above 15 °C1981 2004 24 0 8766 99.7
Above 10 °C1981 2004 24 0 8766 99.7
Above 5 °C1981 2004 24 0 8766 99.7
Above 0 °C1981 2004 24 0 8766 99.7
Below 0 °C1981 2004 24 0 8766 99.7
Below 5 °C1981 2004 24 0 8766 99.7
Below 10 °C1981 2004 24 0 8766 99.7
Below 15 °C1981 2004 24 0 8766 99.7
Below 18 °C1981 2004 24 0 8766 99.7
Humidex:
Days with Humidex >= 301981 2004 24 0 209874 99.4
Days with Humidex >= 351981 2004 24 0 209874 99.4
Days with Humidex >= 401981 2004 24 0 209874 99.4
Wind Chill:
Days with Wind Chill < -201981 2004 24 0 209944 99.5
Days with Wind Chill < -301981 2004 24 0 209944 99.5
Days with Wind Chill < -401981 2004 24 0 209944 99.5
Humidity:
Average Vapour Pressure (kPa)1981 2004 24 0 209874 99.4
Average Relative Humidity - 0600LST (%)1981 2004 24 0 8749 99.5
Average Relative Humidity - 1500LST (%)1981 2004 24 0 8755 99.5
Pressure:
Average Station Pressure (kPa)1981 2004 24 0 209954 99.5
Average Sea Level Pressure (kPa)1981 2004 24 2 202868 96.1
Visibility (hours with):
< 1 km1981 2004 21 5 170256 80.6
1 to 9 km1981 2004 21 5 170256 80.6
> 9 km1981 2004 21 5 170256 80.6
Frost-Free:
Average Date of Last Spring Frost1981 2004 24 0 24 100.0
Average Date of First Fall Frost1981 2004 24 0 24 100.0
Average Length of Frost-Free Period1981 2004 24 0 24 100.0
Probability of last temperature in spring of 0 °C or lower on or after indicated dates
10 %1938 2004 66 0 67 100.0
25 %1938 2004 66 0 67 100.0
33 %1938 2004 66 0 67 100.0
50 %1938 2004 66 0 67 100.0
66 %1938 2004 66 0 67 100.0
75 %1938 2004 66 0 67 100.0
90 %1938 2004 66 0 67 100.0
Probability of first temperature in fall of 0 °C or lower on or after indicated dates
10 %1938 2004 66 0 67 100.0
25 %1938 2004 66 0 67 100.0
33 %1938 2004 66 0 67 100.0
50 %1938 2004 66 0 67 100.0
66 %1938 2004 66 0 67 100.0
75 %1938 2004 66 0 67 100.0
90 %1938 2004 66 0 67 100.0
Probability of frost-free period equal to or less than indicated period (Days)
10 %1938 2004 66 0 67 100.0
25 %1938 2004 66 0 67 100.0
33 %1938 2004 66 0 67 100.0
50 %1938 2004 66 0 67 100.0
66 %1938 2004 66 0 67 100.0
75 %1938 2004 66 0 67 100.0
90 %1938 2004 66 0 67 100.0