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Home  »  Climate Normals & Averages 1971-2000  »  Station Results

Notices:

A new set of IDF curves was produced on February 09, 2012 and posted on March 09, 2012. Please read the Whats_New_EC_IDF.pdf file for a list of all of the changes.

OTTAWA MACDONALD-CARTIER INT’L A, HAMILTON A, DEER LAKE A, GANDER INT'L A, ST.JOHN'S A, SASKATOON DIEFENBAKER INT'L A, LONDON INT'L A, SAULT STE. MARIE A, EDMONTON INT'L A, YARMOUTH A, THUNDER BAY A, CHURCHILL A and SMITHERS A weather reporting stations have switched over to new NAV CANADA sensors and reporting tools. Due to some unanticipated data processing issues related to the new data flow, the display of daily data from these stations is not available on our website at present. However, hourly data is now being displayed for the new stations: OTTAWA INT'L, HAMILTON, DEER LAKE, GANDER INT'L, ST. JOHN'S INT'L, SASKATOON DIEFENBAKER INT'L, LONDON, SAULT STE MARIE, EDMONTON, YARMOUTH, THUNDER BAY, CHURCHILL and SMITHERS.  For more information, please click here and expand the message. Thank you for your patience while we work to fix these current issues.

The Notice Inventory contains a record of all past and current Notices.

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.

TERRACE A *
BRITISH COLUMBIA
Latitude: 54°27'59.000" N Longitude: 128°34'39.000" W Elevation: 217.30 m
Climate ID: 1068130 WMO ID: 71951 TC ID: YXT

* 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)-4.3 -1.4 2.3 6.2 10.3 13.7 16.4 16.3 12.2 6.4 0.6 -2.9 6.3 A
Standard Deviation3.4 2.7 1.6 1.3 1.6 1.6 1.4 1.5 1.4 1.2 2.5 3 0.8 A
Daily Maximum (°C)-2.2 1.1 5.7 10.7 15.4 18.6 21.3 21.1 16.3 9.1 2.4 -1 9.9 A
Daily Minimum (°C)-6.4 -3.8 -1.2 1.6 5.2 8.8 11.3 11.4 8.1 3.7 -1.3 -4.8 2.7 A
Extreme Maximum (°C)9.4 10 16.9 25 34.6 34.4 35.6 36.2 32.2 21.4 21.4 11.3    
Date (yyyy/dd)1962/30 1970/26 1994/28 1976/29 1983/29 1958/20 1971/30 1990/11 1974/01 1993/02 1995/25 1980/15  
Extreme Minimum (°C)-25 -25 -18.3 -8.3 -2.2 0.6 3.3 2.8 -1.4 -13.5 -25.3 -26.7    
Date (yyyy/dd)1969/01 1956/15 1956/11 1966/12 1964/13 1960/04 1955/01 1973/31 1983/28 1984/31 1985/26 1964/16  
Precipitation:
Rainfall (mm)70.5 59.1 52.2 60.3 52.6 51.3 52.7 62.7 98.6 182.5 128 99.6 970.1 A
Snowfall (cm)110.5 65.2 34.7 9.7 0.4 0 0 0 0 3.8 54.6 96.6 375.4 A
Precipitation (mm)168.2 119.8 84.8 71 53.3 51.3 52.7 62.7 98.6 186.6 181.7 191.6 1322.4 A
Average Snow Depth (cm)26 27 16 1 0 0 0 0 0 0 3 16 7 A
Median Snow Depth (cm)25 26 16 0 0 0 0 0 0 0 2 14 7 A
Snow Depth at Month-end (cm)28 22 7 0 0 0 0 0 0 0 9 17 7 A
Extreme Daily Rainfall (mm)46.7 79 42.7 43.4 39.6 35.4 39.4 71.8 106.6 114.8 93 111.4    
Date (yyyy/dd)1958/03 1961/05 1960/16 2001/24 1985/03 1993/22 1966/19 1978/06 1988/28 1978/31 1956/02 1990/07  
Extreme Daily Snowfall (cm)99.1 113.4 40.4 49.6 6.1 0 0 0 0.3 21.3 38.8 82.8    
Date (yyyy/dd)1974/17 1999/11 1971/02 1981/04 1965/03 1954/01 1954/01 1953/01 1972/27 1956/31 1995/11 1990/03  
Extreme Daily Precipitation (mm)66.3 99.7 49.3 59.2 39.6 35.4 39.4 71.8 106.6 114.8 95.8 142    
Date (yyyy/dd)1968/13 1999/11 1976/29 1981/04 1985/03 1993/22 1966/19 1978/06 1988/28 1978/31 1956/02 1991/20  
Extreme Snow Depth (cm)165 191 165 48 3 0 0 0 0 23 56 160    
Date (yyyy/dd)1974/18 1972/20 1972/10 1971/01 1965/03 1955/01 1955/01 1955/01 1955/01 1964/29 1975/26 1957/29  
Days with Maximum Temperature:
<= 0 °C15.9 8.4 2.1 0 0 0 0 0 0 0.23 5.9 13.6 46.2 A
> 0 °C15.1 19.8 28.9 30 31 30 31 31 30 30.8 24.1 17.4 319.1 A
> 10 °C0 0 3.3 14.9 28.1 29.8 31 31 28.9 11.7 0.40 0.07 179.1 A
> 20 °C0 0 0 0.93 4.9 9.9 15.9 15.6 5 0.10 0.03 0 52.4 A
> 30 °C0 0 0 0 0.10 0.33 2 1.6 0.07 0 0 0 4 A
> 35 °C0 0 0 0 0 0 0.03 0.03 0 0 0 0 0.06 A
Days with Minimum Temperature:
> 0 °C4.5 6.6 12.1 21.7 30.1 30 31 31 29.8 27.6 13.3 5.5 243.1 A
<= 2 °C30.7 27.6 28 17.8 3.9 0.10 0 0 0.67 8.7 25.6 30.4 173.4 A
<= 0 °C26.6 21.6 18.9 8.3 0.93 0 0 0 0.17 3.4 16.7 25.5 122.1 A
< -2 °C20.1 14.1 9.5 1.9 0.03 0 0 0 0 0.90 8.6 17.3 72.4 A
< -10 °C8.8 3.9 0.57 0 0 0 0 0 0 0.07 1.6 5.4 20.4 A
< -20 °C1.1 0.13 0 0 0 0 0 0 0 0 0.17 0.73 2.2 A
< - 30 °C0 0 0 0 0 0 0 0 0 0 0 0 0 A
Days with Rainfall:
>= 0.2 mm9.4 9.9 12.2 14.3 14.4 14.9 13.6 13.2 15.7 21.4 15.7 10.9 165.5 A
>= 5 mm4 3.5 3.6 3.7 3.4 3.5 3.4 4.1 5.6 10.2 6.7 4.7 56.4 A
>= 10 mm2.3 2 1.4 1.7 1 1.1 1.4 1.9 3.2 5.9 3.9 3 28.8 A
>= 25 mm0.57 0.27 0.23 0.27 0.17 0.07 0.17 0.20 0.53 1.6 1.2 1.1 6.4 A
Days With Snowfall:
>= 0.2 cm14.6 10.8 9.1 3.6 0.30 0 0 0 0.03 1.5 11.4 16.6 67.9 A
>= 5 cm6.3 4 2 0.57 0 0 0 0 0 0.20 3.1 5.8 21.9 A
>= 10 cm3.6 1.9 0.70 0.13 0 0 0 0 0 0.13 1.5 3 11 A
>= 25 cm1.1 0.33 0.23 0.03 0 0 0 0 0 0 0.40 0.63 2.7 A
Days with Precipitation:
>= 0.2 mm19.1 16.5 16.9 15.3 14.4 14.9 13.6 13.2 15.7 21.6 21 21.4 203.7 A
>= 5 mm9.2 7 5.5 4.1 3.4 3.5 3.4 4.1 5.6 10.4 9.2 9.6 75 A
>= 10 mm5.7 3.9 2.5 2 1.1 1.1 1.4 1.9 3.2 6 5.7 5.7 40.1 A
>= 25 mm1.7 0.57 0.40 0.37 0.17 0.07 0.17 0.20 0.53 1.6 1.8 1.9 9.5 A
Days with Snow Depth:
>= 1 cm26.3 21.5 14.8 2.9 0 0 0 0 0 0.33 8.6 23.5 98.1 A
>= 5 cm23.1 18.2 11.9 2.2 0 0 0 0 0 0.10 5.2 19.5 80.1 A
>= 10 cm20.6 16.6 10.9 1.7 0 0 0 0 0 0 3.6 15.3 68.6 A
>= 20 cm15.6 12.7 9.7 0.97 0 0 0 0 0 0 1.9 9.8 50.7 A
Wind:
Speed (km/h)17.7 15.8 13 13 12.8 13.2 12.2 11.4 11.1 11.8 13.1 15.2 13.4 A
Most Frequent DirectionN N S S S S S S S S N N S A
Maximum Hourly Speed (km/h)72 80 89 93 68 80 64 61 68 68 80 80    
Date (yyyy/dd)1958/11 1957/13 1956/03 1984/15 1964/23 1958/24 1958/30 1969/24 1961/19 1959/13 1957/24 1963/31  
Direction of Maximum Hourly SpeedN S SE S S S S S S SE S SE S  
Maximum Gust Speed (km/h)113 120 98 124 105 116 89 89 92 113 121 121    
Date (yyyy/dd)1960/28 1991/04 1963/10 1984/15 1965/16 1962/24 1959/12 1966/14 1964/15 1961/30 1968/28 1963/31  
Direction of Maximum GustSE S SE S SE SW SE SE SE SE SE SE S  
Days with Winds >= 52 km/h2.4 1 0.3 0.4 0.4 0.2 0.1 0.1 0.2 0.6 0.6 1.9 8.2 A
Days with Winds >= 63 km/h0.4 0.1 0 0.1 0 0 0 0 0 0.1 0.1 0.2 1.1 A
Degree Days:
Above 24 °C0 0 0 0 0 0 0.5 0.6 0 0 0 0 1.1 A
Above 18 °C0 0 0 0 1 5.4 22.2 19.7 1.4 0 0 0 49.6 A
Above 15 °C0 0 0 0.1 4.4 22.8 62.5 57.7 8.9 0 0 0 156.3 A
Above 10 °C0 0 0 5.4 42.2 114.4 196.8 192 76.5 6.2 0.1 0 633.7 A
Above 5 °C0.1 0.1 6.5 52.4 165.9 262.1 351.7 346.9 216.3 63 3.6 0.3 1468.8 A
Above 0 °C17.6 31.1 85.8 184.7 320.5 412.1 506.7 501.9 366.1 201.1 55.8 20.8 2704.1 A
Below 0 °C150.7 70.1 15.2 0.1 0 0 0 0 0 1.8 38.3 110.9 387 A
Below 5 °C288.2 180.5 90.9 17.8 0.4 0 0 0 0.3 18.6 136 245.3 978 A
Below 10 °C443.1 321.7 239.4 120.7 31.7 2.4 0.1 0.1 10.5 116.9 282.6 400.1 1969.2 A
Below 15 °C598.1 463 394.4 265.4 148.9 60.7 20.8 20.8 92.8 265.7 432.5 555.1 3318.1 A
Below 18 °C691.1 547.8 487.4 355.4 238.5 133.3 73.5 75.8 175.4 358.6 522.5 648.1 4307.3 A
Bright Sunshine:
Total Hours47.7 71.3 112.7 156.3 197.4 201.2 209.5 200.3 132 68.4 43.2 31.2 1471.2 C
Days with measureable14.6 18.1 24.3 26.6 28.7 27.4 28.2 28.1 24.8 21 15 11.9 268.6 C
% of possible daylight hours19.4 26.1 30.7 37.1 39.7 39.1 40.6 43.4 34.5 20.9 16.8 13.6 30.2 C
Extreme Daily7.3 9.8 11 13.6 15.3 15.9 15.5 15.5 12.6 10.7 9.4 7   A
Date (yyyy/dd)1996/31 1996/29 1991/25 1989/28 1985/31 1984/20 1985/02 1999/02 1993/01 1987/07 1997/03 1994/02  
Humidex:
Extreme Humidex8.4 9.7 16.4 28 34.6 38 38.2 38.5 34.1 23.3 14.5 12.5    
Date (yyyy/dd)1963/06 1993/05 1994/28 1956/21 1983/29 1969/12 1960/30 1990/11 1988/03 1987/01 1986/03 1980/15  
Days with Humidex >= 300 0 0 0 0.1 0.4 2.7 2.6 0.2 0 0 0 6 A
Days with Humidex >= 350 0 0 0 0 0 0.3 0.3 0 0 0 0 0.6 A
Days with Humidex >= 400 0 0 0 0 0 0 0 0 0 0 0 0 A
Wind Chill:
Extreme Wind Chill-40.8 -35.9 -30.3 -14.4 -6.1 -2.3 1.8 1.6 -4.4 -24 -41.7 -42.2    
Date (yyyy/dd)1969/01 1975/12 1976/02 1966/10 2002/06 1960/04 1972/01 1960/29 1983/28 1984/31 1985/27 1968/31  
Days with Wind Chill < -207.6 2.9 0.4 0 0 0 0 0 0 0 1.4 4.4 16.8 A
Days with Wind Chill < -302.3 0.3 0 0 0 0 0 0 0 0 0.2 1.2 4 A
Days with Wind Chill < -400 0 0 0 0 0 0 0 0 0 0 0 0 A
Humidity:
Average Vapour Pressure (kPa)0.4 0.5 0.5 0.6 0.8 1 1.2 1.2 1.1 0.8 0.6 0.5 0.8 A
Average Relative Humidity - 0600LST (%)81.3 81.2 82.2 82.5 81.2 80.7 81.6 83.4 87.5 90.4 87.2 84.6 83.7 A
Average Relative Humidity - 1500LST (%)77.7 71.9 62.7 54 49.6 51.6 52.6 54.6 63.3 77.2 82.3 82.5 65 A
Pressure:
Average Station Pressure (kPa)98.8 98.7 98.6 98.8 98.9 99 99.1 99 99 98.8 98.5 98.8 98.8 A
Average Sea Level Pressure (kPa)101.5 101.4 101.3 101.5 101.6 101.6 101.7 101.7 101.6 101.4 101.2 101.5 101.5 A
Visibility (hours with):
< 1 km38.9 23.2 13.2 3.4 1.5 0.4 0.5 2.2 6.8 16.8 32 39.3 178.1 C
1 to 9 km193.4 154.3 109 50.3 25.2 16.1 15.8 24.5 64.8 131.2 201.1 226.4 1212 C
> 9 km511.7 499.8 621.8 666.4 717.3 703.5 727.7 717.4 648.4 596 486.9 478.3 7375.2 C
Cloud Amount (hours with):
0 to 2 tenths117.4 104.3 101.5 100.6 95 84.2 121.4 152.7 119 68.3 81.3 87.2 1233 C
3 to 7 tenths82 88.6 130.2 144 162.7 169.2 160.2 158.2 138.2 103.1 78 77 1491.3 C
8 to 10 tenths544.7 484.5 512.3 475.4 486.2 466.6 462.5 433 462.8 572.6 560.7 579.9 6041.1 C


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Date Modified: 2012-03-14

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