Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph
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Normals 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.

SHEARWATER A
NOVA SCOTIA
Current Station Operator: DND

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Normals Station Data
(all elements)
Temperature
1981 to 2010 Canadian Climate Normals station data
Temperature
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Daily Average (°C)-4.6-4.2-0.74.39.214.318.118.515.19.64.5-1.06.9A
Standard Deviation2.21.71.40.91.01.01.00.81.31.31.22.12.1A
Daily Maximum (°C)-0.30.23.38.313.618.822.422.619.413.68.12.911.1A
Daily Minimum (°C)-9.0-8.6-4.70.24.89.813.714.310.85.50.9-5.02.7A
Extreme Maximum (°C)14.316.221.827.832.033.033.332.433.327.822.215.6
Date (yyyy/dd)1995/ 161994/ 201998/ 311945/ 111977/ 231983/ 231963/ 261995/ 011945/ 081946/ 061956/ 011957/ 10
Extreme Minimum (°C)-26.5-25.7-22.2-12.2-3.32.06.75.6-0.5-5.6-11.4-23.5
Date (yyyy/dd)1994/ 261993/ 071948/ 061946/ 011945/ 031982/ 121946/ 041965/ 311980/ 291974/ 221978/ 271989/ 29
Precipitation
1981 to 2010 Canadian Climate Normals station data
Precipitation
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Rainfall (mm)84.669.196.9105.3118.9117.9103.491.8103.0130.3130.2110.01261.2C
Snowfall (cm)50.540.731.111.91.70.00.00.00.00.210.435.2181.6C
Precipitation (mm)127.1105.1125.2117.7120.6117.9103.491.8103.0130.5139.4141.01422.6C
Average Snow Depth (cm)6850000000022C
Median Snow Depth (cm)4630000000011C
Snow Depth at Month-end (cm)6810000000152C
Extreme Daily Rainfall (mm)78.287.995.896.991.480.0131.6184.990.884.570.0110.0
Date (yyyy/dd)1958/ 161958/ 082003/ 311982/ 281947/ 011944/ 211954/ 201971/ 151996/ 022005/ 091991/ 111946/ 21
Extreme Daily Snowfall (cm)47.588.335.646.014.00.00.00.00.033.035.247.0
Date (yyyy/dd)2001/ 212004/ 191960/ 091950/ 061995/ 061944/ 011944/ 011944/ 011944/ 011974/ 202004/ 131963/ 19
Extreme Daily Precipitation (mm)78.288.395.896.991.480.0131.6184.990.884.570.0111.3
Date (yyyy/dd)1958/ 162004/ 192003/ 311982/ 281947/ 011944/ 211954/ 201971/ 151996/ 022005/ 091991/ 111946/ 21
Extreme Snow Depth (cm)61958433150100101846
Date (yyyy/dd)1971/ 242004/ 201960/ 151972/ 101972/ 111955/ 011992/ 281955/ 011955/ 011974/ 211986/ 201958/ 18
Days with Maximum Temperature
1981 to 2010 Canadian Climate Normals station data
Days with Maximum Temperature
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
<= 0 °C15.413.56.70.240.00.00.00.00.00.01.18.245.1C
> 0 °C15.614.724.329.831.030.031.031.030.031.028.922.8320.1C
> 10 °C0.800.371.89.424.029.631.031.030.025.410.72.5196.4C
> 20 °C0.00.00.040.162.512.323.525.011.91.30.00.076.7C
> 30 °C0.00.00.00.00.040.280.380.270.080.00.00.01.1C
> 35 °C0.00.00.00.00.00.00.00.00.00.00.00.00.0C
Days with Minimum Temperature
1981 to 2010 Canadian Climate Normals station data
Days with Minimum Temperature
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
> 0 °C2.41.84.416.230.030.031.031.030.029.016.25.9228.0C
<= 2 °C30.327.629.823.34.90.040.00.00.086.818.328.2169.3C
<= 0 °C28.626.426.713.81.00.00.00.00.02.013.825.1137.2C
< -2 °C26.423.620.25.40.080.00.00.00.00.158.120.4104.4C
< -10 °C14.311.84.50.040.00.00.00.00.00.00.196.637.4C
< -20 °C0.840.410.040.00.00.00.00.00.00.00.00.131.4C
< - 30 °C0.00.00.00.00.00.00.00.00.00.00.00.00.0C
Days with Rainfall
1981 to 2010 Canadian Climate Normals station data
Days with Rainfall
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 0.2 mm9.06.99.513.314.613.712.011.411.212.413.911.1139.0C
>= 5 mm4.63.54.86.46.25.74.54.95.06.46.85.464.1C
>= 10 mm3.32.23.23.63.54.13.33.03.24.54.14.042.1C
>= 25 mm0.760.931.00.881.21.51.20.851.41.41.51.413.8C
Days With Snowfall
1981 to 2010 Canadian Climate Normals station data
Days With Snowfall
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 0.2 cm11.310.08.03.70.480.00.00.00.00.152.68.544.8C
>= 5 cm3.32.42.20.800.080.00.00.00.00.00.582.511.8C
>= 10 cm1.51.21.00.240.040.00.00.00.00.00.270.915.2C
>= 25 cm0.200.110.080.00.00.00.00.00.00.00.040.090.52C
Days with Precipitation
1981 to 2010 Canadian Climate Normals station data
Days with Precipitation
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 0.2 mm16.313.714.314.914.713.712.011.411.212.415.215.9165.6C
>= 5 mm7.25.76.97.46.45.74.54.95.06.47.37.574.7C
>= 10 mm4.83.34.24.03.54.13.33.03.24.54.45.047.3C
>= 25 mm1.11.11.30.921.21.51.20.851.41.41.61.514.8C
Days with Snow Depth
1981 to 2010 Canadian Climate Normals station data
Days with Snow Depth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
>= 1 cm18.618.716.03.00.080.00.040.00.00.02.010.969.3C
>= 5 cm12.412.88.91.10.040.00.00.00.00.00.805.241.1C
>= 10 cm8.29.15.90.240.00.00.00.00.00.00.482.426.3C
>= 20 cm2.23.82.00.040.00.00.00.00.00.00.00.438.5C
Wind
1981 to 2010 Canadian Climate Normals station data
Wind
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Speed (km/h)17.918.017.516.814.012.611.010.912.614.916.717.715.1C
Most Frequent DirectionWNWNNSSSSSWWWWWC
Maximum Hourly Speed (km/h)839778857277876097808989
Date (yyyy/dd)1990/ 301963/ 201986/ 071962/ 131961/ 201964/ 121975/ 281956/ 081954/ 111962/ 071958/ 291956/ 30
Direction of Maximum Hourly SpeedEESWNEENSENESNESESW
Maximum Gust Speed (km/h)12714614812210611111493132132121150
Date (yyyy/dd)1960/ 031976/ 021976/ 171962/ 131961/ 031964/ 121975/ 281986/ 092003/ 281963/ 291963/ 081956/ 30
Direction of Maximum GustSSSWNEWNWSSWSESNESW
Days with Winds >= 52 km/h3.33.01.71.50.60.20.10.10.61.02.53.217.8C
Days with Winds >= 63 km/h0.70.70.20.10.00.10.00.00.10.30.40.73.2C
Degree Days
1981 to 2010 Canadian Climate Normals station data
Degree Days
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Above 24 °C0000000.10.100000.2C
Above 18 °C00000.3629.737.38.90.30082.3C
Above 15 °C00001.729.397.6110.138.63.400280.8C
Above 10 °C000.21.327.8132.2249.5262.7155.938.65.40.1873.7C
Above 5 °C1.40.83.727.7134279.5404.5417.7304.3145.345.77.11771.6C
Above 0 °C18.216.142131.8286.4429.5559.5572.7454.3296.6144.545.62997.1C
Below 0 °C162.5135.364.53.30000008.882.1456.5C
Below 5 °C300.6261.1181.349.32.700003.759.9198.61057.1C
Below 10 °C454.3401.4332.8172.851.52.7001.652169.7346.61985.3C
Below 15 °C609.2542.5487.6321.6180.449.83.22.434.3171.8314.3501.53218.5C
Below 18 °C702.2627.2580.6411.6271.9116.528.222.694.5261.7404.3594.54115.7C
Bright Sunshine
1981 to 2010 Canadian Climate Normals station data
Bright Sunshine
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Total Hours109.5127.2142.8156.6193.3220.7235.2226.6180.5157.8107.4105.21962.5D
Days with measurable22.121.223.022.424.226.227.527.525.525.322.522.7289.9D
% of possible daylight hours38.243.338.738.842.147.549.952.147.946.237.238.243.3D
Extreme Daily9.810.812.613.715.315.115.214.413.011.210.19.0
Date (yyyy/dd)1963/ 311973/ 281963/ 291977/ 301963/ 281968/ 101966/ 161972/ 051999/ 011998/ 201977/ 011996/ 11
Humidex
1981 to 2010 Canadian Climate Normals station data
Humidex
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Extreme Humidex15.514.723.025.635.139.639.642.941.730.423.517.2
Date (yyyy/dd)1995/ 161994/ 201998/ 312009/ 281977/ 231976/ 241963/ 261995/ 012010/ 012010/ 011956/ 011953/ 10
Days with Humidex >= 300.00.00.00.00.11.55.06.61.30.00.00.014.5C
Days with Humidex >= 350.00.00.00.00.00.30.60.60.20.00.00.01.7C
Days with Humidex >= 400.00.00.00.00.00.00.00.10.00.00.00.00.1C
Wind Chill
1981 to 2010 Canadian Climate Normals station data
Wind Chill
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Extreme Wind Chill (°C)-38-40-32-24-9000-2-8-21-34
Date (yyyy/dd)1994/ 271967/ 121992/ 011995/ 051972/ 111953/ 011953/ 011953/ 011980/ 291974/ 201958/ 301980/ 26
Days with Wind Chill < -209.16.52.20.00.00.00.00.00.00.00.03.221.1C
Days with Wind Chill < -301.20.50.10.00.00.00.00.00.00.00.00.11.8C
Days with Wind Chill < -400.00.00.00.00.00.00.00.00.00.00.00.00.0C
Humidity
1981 to 2010 Canadian Climate Normals station data
Humidity
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Average Vapour Pressure (kPa)0.40.40.50.70.91.31.61.71.410.70.50.9C
Average Relative Humidity - 0600LST (%)83.181.983.886.788.188.390.591.289.487.384.683.386.5C
Average Relative Humidity - 1500LST (%)75.372.170.968.77068.770.469.766.967.972.475.270.7C
Pressure
1981 to 2010 Canadian Climate Normals station data
Pressure
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Average Station Pressure (kPa)100.7100.8100.7100.7100.9100.8100.8101101.1101.1100.9100.7100.8C
Average Sea Level Pressure (kPa)101.3101.4101.4101.4101.5101.4101.4101.6101.7101.7101.5101.3101.5C
Visibility (hours with)
1981 to 2010 Canadian Climate Normals station data
Visibility (hours with)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
< 1 km33.532.153.962.791.171.289.773.329.624.32523.2609.6D
1 to 9 km116.9106.1118.8124.2105.8106.6112.1115.683.28096.2101.41266.8D
> 9 km593.6539.2571.3533.2547.1542.2542.2555.1607.2639.7598.9619.46,889D
Cloud Amount (hours with)
1981 to 2010 Canadian Climate Normals station data
Cloud Amount (hours with)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
0 to 2 tenths180.9181.2190.1147.9138.4124.6135.3181.3206.4216.4148.2179.12029.7D
3 to 7 tenths125.8105.4107.3104121.7153.4165.1163.5156.7145.4121.9125.31595.5D
8 to 10 tenths437.3390.8446.6468.1483.8442443.7399.2356.9382.1450439.65140.1D
Frost-Free
1981 to 2010 Canadian Climate Normals station data
Frost-Free
Date/Days Code
Average Date of Last Spring Frost May 03 C
Average Date of First Fall Frost Oct 23 C
Average Length of Frost-Free Period 172 Days C
1981 to 2010 Canadian Climate Normals station data
Frost-Free
Probability of last temperature in spring of 0 °C or lower on or after indicated dates10%25%33%50%66%75%90%
DateMay 19May 10May 08May 04Apr 29Apr 26Apr 22
Probability of first temperature in fall of 0 °C or lower on or before indicated dates10%25%33%50%66%75%90%
DateOct 10Oct 13Oct 18Oct 22Oct 28Oct 31Nov 06
Probability of frost-free period equal to or less than indicated period (Days)10%25%33%50%66%75%90%
Days150157161173179181189

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
Station / Element Metadata

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.

SHEARWATER A

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