Canadian Climate Normals 1981-2010 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
HALIFAX CITADEL
NOVA SCOTIA
Latitude: 44°39'00.000" N Longitude: 63°35'00.000" W Elevation: 70.10 m
Climate ID: 8202220 WMO ID: TC ID:
1981 to 2010 Canadian Climate Normals station data
 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Temperature:
Daily Average (°C)-4.1 -3.6 -0.2 4.9 10.1 15.2 18.8 19.1 15.5 9.9 4.8 -0.8 7.5 Legend CC
Standard Deviation1.9 1.8 1.4 0.9 1.1 1.1 1 0.9 1.2 1.2 1.2 2.2 2.1 Legend CC
Daily Maximum (°C)-0.1 0.4 3.6 8.7 14.4 19.6 23.1 23.1 19.3 13.4 8.1 2.8 11.4 Legend CC
Daily Minimum (°C)-8.2 -7.5 -3.9 1 5.8 10.7 14.4 15.1 11.8 6.4 1.5 -4.3 3.6 Legend CC
Extreme Maximum (°C)14 16 23.5 26.1 33.3 34 33 33.9 32.2 24 20 16.7   Legend
Date
(yyyy/dd)
1995/ 16 1994/ 20 1998/ 31 1938/ 28 1977/ 23 2001/ 27 2001/ 25 1935/ 19 1969/ 01 1983/ 04 1938/ 06 1950/ 30  
Extreme Minimum (°C)-26.1 -25 -21 -12 -2.8 1.7 7.2 6.1 1 -5 -13.9 -23.3   Legend
Date
(yyyy/dd)
1951/ 31 1993/ 07 1989/ 07 1995/ 06 1966/ 08 1973/ 18 1970/ 02 1965/ 30 1980/ 29 1976/ 29 1936/ 19 1933/ 30  
Precipitation:
Rainfall (mm)96.7 75.1 101.3 111.3 118.4 111.8 110.3 96.4 108.9 124.1 143.6 115.9 1313.9 Legend CC
Snowfall (cm)43.1 35 31.2 7 0.8 0 0 0 0 0.1 7.8 29.2 154.2 Legend CC
Precipitation (mm)139.7 110.1 132.5 118.3 119.1 111.8 110.3 96.4 108.9 124.3 151.4 145.1 1468.1 Legend CC
Extreme Daily Rainfall (mm)88.6 59.2 82.6 73.2 72.1 65.8 93.8 118.1 96.3 81.3 99.1 95.3   Legend
Date
(yyyy/dd)
1978/ 18 1965/ 25 1972/ 23 1984/ 16 1971/ 17 1972/ 10 1982/ 20 1971/ 15 1936/ 19 1970/ 04 1972/ 09 1975/ 10  
Extreme Daily Snowfall (cm)39 41.2 31 22.9 20.3 0 0 0 0 12.7 22 44   Legend
Date
(yyyy/dd)
1981/ 17 1992/ 01 1993/ 13 1972/ 03 1972/ 09 1934/ 01 1934/ 01 1933/ 01 1933/ 01 1974/ 20 1989/ 23 1983/ 24  
Extreme Daily Precipitation (mm)93.7 59.2 82.6 73.2 72.1 65.8 93.8 118.1 96.3 81.3 99.1 95.3   Legend
Date
(yyyy/dd)
1978/ 18 1965/ 25 1972/ 23 1984/ 16 1971/ 17 1972/ 10 1982/ 20 1971/ 15 1936/ 19 1970/ 04 1972/ 09 1975/ 10  
Extreme Snow Depth (cm)62 66 89 20 0 0 0 0 0 0 29 31   Legend
Date
(yyyy/dd)
1981/ 18 1987/ 11 1987/ 17 1985/ 02 1964/ 01 1964/ 01 1964/ 01 1964/ 01 1964/ 01 1964/ 01 1989/ 27 1988/ 18  
Days with Maximum Temperature:
<= 0 °C15.1 13.6 7 0.29 0 0 0 0 0 0 1.6 9.5 47 Legend CC
> 0 °C15.9 14.7 24 29.7 31 30 31 31 30 31 28.4 21.6 318.2 Legend CC
> 10 °C0.68 0.71 2.1 10.6 25.3 29.7 31 31 29.8 24.3 10.6 2.7 198.4 Legend CC
> 20 °C0 0 0.05 0.10 3.1 13.4 24.6 25.2 11.1 0.71 0 0 78.2 Legend CC
> 30 °C0 0 0 0 0.05 0.24 0.30 0.33 0.10 0 0 0 1 Legend CC
> 35 °C0 0 0 0 0 0 0 0 0 0 0 0 0 Legend CC
Days with Minimum Temperature:
> 0 °C2.6 2.5 5.3 17.8 30.2 30 31 31 30 30 17.6 6.4 234.3 Legend CC
<= 2 °C30.3 27.5 29.1 21.1 3.4 0 0 0 0.05 4.7 17.8 27.8 161.6 Legend CC
<= 0 °C28.4 25.8 25.7 12.2 0.85 0 0 0 0 1.1 12.4 24.6 131 Legend CC
< -2 °C24.9 22.1 17.3 3 0 0 0 0 0 0.05 5.8 18.3 91.3 Legend CC
< -10 °C11.5 9.4 3.6 0.10 0 0 0 0 0 0 0.10 5.1 29.8 Legend CC
< -20 °C0.57 0.14 0.05 0 0 0 0 0 0 0 0 0.05 0.81 Legend CC
< - 30 °C0 0 0 0 0 0 0 0 0 0 0 0 0 Legend CC
Days with Rainfall:
>= 0.2 mm8.5 6.5 10.2 14.1 15.7 13.6 12.1 11.1 11.7 14.1 14.5 10.8 142.7 Legend CC
>= 5 mm5 3.7 5.6 6.1 6.6 6 4.6 5 5.8 5.9 7.3 6 67.3 Legend CC
>= 10 mm3.8 2.6 3.5 3.4 4.5 3.5 3.5 3.4 3.4 4.1 4.4 4.1 44 Legend CC
>= 25 mm1.1 1 1.2 1.1 0.90 1.4 1.5 0.95 1.3 1.4 1.6 1.2 14.6 Legend CC
Days With Snowfall:
>= 0.2 cm6.8 6.1 4.1 1.6 0.19 0 0 0 0 0.10 1.2 5.2 25.3 Legend CC
>= 5 cm3 2.4 2.7 0.62 0.05 0 0 0 0 0 0.43 2.1 11.3 Legend CC
>= 10 cm1.3 1.1 1.2 0.05 0 0 0 0 0 0 0.29 0.71 4.8 Legend CC
>= 25 cm0.18 0.14 0.10 0 0 0 0 0 0 0 0 0.19 0.61 Legend CC
Days with Precipitation:
>= 0.2 mm13.8 11.6 13.1 15.2 15.8 13.6 12.1 11.1 11.7 14.1 15.3 14.5 161.8 Legend CC
>= 5 mm7.6 5.8 7.9 6.8 6.7 6 4.6 5 5.8 5.9 7.7 7.7 77.2 Legend CC
>= 10 mm5.2 3.9 4.9 3.5 4.5 3.5 3.5 3.4 3.4 4.1 4.7 4.9 49.4 Legend CC
>= 25 mm1.5 1.3 1.2 1.1 0.90 1.4 1.5 0.95 1.3 1.4 1.7 1.5 15.7 Legend CC
Wind:
Maximum Hourly Speed (km/h)135 58 91 56 59 60 70 72 56 56 58 58   Legend
Date
(yyyy/dd)
1980/ 19 1971/ 09 1976/ 17 1977/ 05 1975/ 06 1973/ 17 1975/ 28 1979/ 07 1985/ 28 1974/ 20 1973/ 02 1971/ 25  
Direction of Maximum Hourly SpeedN SW SW S CALM W SE NW SW CALM SW S CALM Legend
Degree Days:
Above 24 °C0 0 0 0 0 0.1 0.2 0.4 0 0 0 0 0.8 Legend DD
Above 18 °C0 0 0 0 0.6 10.9 43.1 49.6 11.1 0.3 0 0 115.6 Legend DD
Above 15 °C0 0 0 0 3.3 42.1 118.9 128.3 45.5 3.9 0.1 0 342 Legend DD
Above 10 °C0.1 0 0.5 2.3 42.6 157.4 271.7 281.8 167.6 43.3 6.1 0.1 973.5 Legend DD
Above 5 °C1.7 1.4 5.9 37.4 161 305.8 426.7 436.8 316.2 154.2 47 7.7 1901.8 Legend DD
Above 0 °C20.2 19.1 50.9 148.6 314.4 455.8 581.7 591.8 466.2 306.9 151.7 48.1 3155.3 Legend DD
Below 0 °C145.2 120 56.3 2.5 0 0 0 0 0 0 7.6 74.9 406.5 Legend DD
Below 5 °C281.7 243.5 166.4 41.2 1.6 0 0 0 0 2.3 53 189.6 979.2 Legend DD
Below 10 °C435.1 383.3 315.9 156.2 38.1 1.6 0 0 1.4 46.4 162 337 1877 Legend DD
Below 15 °C590 524.5 470.5 303.8 153.8 36.4 2.2 1.5 29.3 162 306 491.9 3071.8 Legend DD
Below 18 °C683 609.2 563.5 393.8 244.2 95.1 19.4 15.8 84.9 251.4 395.9 584.9 3941 Legend DD
Radiation:
Extreme Global - RF1 (MJ/m2)11.1 16.3 24.6 28.3 34.1 33.9 33.2 30.7 25.5 18.4 12.8 9   Legend
Date
(yyyy/dd)
2001/ 29 1965/ 28 1965/ 31 1965/ 25 2000/ 30 1965/ 20 2000/ 06 1965/ 01 2000/ 06 1973/ 01 1964/ 01 1990/ 03  
1981 to 2010 Canadian Climate Normals station data (Frost-Free)
Frost-Free:Code
Average Date of Last Spring Frost May 01 LegendCC
Average Date of First Fall Frost October 31 LegendCC
Average Length of Frost-Free Period 182 Days LegendCC
Probability of last temperature in spring of 0 °C or lower on or after indicated dates 10% 25% 33% 50% 66% 75% 90%
DateMay 19May 09May 08May 01Apr 27Apr 25Apr 19
Probability of first temperature in fall of 0 °C or lower on or after indicated dates 10% 25% 33% 50% 66% 75% 90%
DateOct 11Oct 19Oct 20Oct 25Oct 30Nov 01Nov 05
Probability of frost-free period equal to or less than indicated period (Days) 10% 25% 33% 50% 66% 75% 90%
Days152166169176181186194
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