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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.

GREEN ISLAND *
BRITISH COLUMBIA
Current Station Operator: CCG

* This station meets WMO standards for temperature and precipitation.

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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)3.23.85.17.410.212.914.614.812.48.95.33.98.5A
Standard Deviation2.11.61.10.91.20.90.70.80.70.81.91.71.1A
Daily Maximum (°C)4.95.57.09.812.815.617.317.414.510.67.05.610.7A
Daily Minimum (°C)1.52.13.24.97.510.011.812.110.27.13.62.26.4A
Extreme Maximum (°C)12.812.513.018.525.029.024.525.724.517.016.512.5
Date (yyyy/dd)1981/ 201992/ 261994/ 291989/ 301993/ 132004/ 191998/ 271980/ 112000/ 221987/ 011999/ 162003/ 18
Extreme Minimum (°C)-11.5-13.0-11.5-1.01.55.57.58.05.0-5.6-18.5-10.7
Date (yyyy/dd)1982/ 221989/ 022003/ 081996/ 011999/ 031987/ 051987/ 031980/ 291992/ 141984/ 311985/ 261984/ 28
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)253.6163.5185.1164.7128.7105.3106.7166.1250.3353.5291.9259.92429.4A
Snowfall (cm)12.610.84.40.80.00.00.00.00.00.44.811.144.9A
Precipitation (mm)266.2174.3189.5165.6128.7105.3106.7166.1250.3353.9296.8270.92474.3A
Average Snow Depth (cm)1100000000000C
Median Snow Depth (cm)0000000000000C
Snow Depth at Month-end (cm)1100000000100C
Extreme Daily Rainfall (mm)90.694.063.093.269.867.065.283.2137.6130.0100.887.0
Date (yyyy/dd)1997/ 091996/ 122003/ 282001/ 231979/ 251990/ 201988/ 232001/ 252001/ 221986/ 191987/ 191984/ 05
Extreme Daily Snowfall (cm)21.521.717.08.00.00.00.00.00.04.020.022.2
Date (yyyy/dd)1998/ 061979/ 071987/ 031982/ 171979/ 011979/ 011979/ 011979/ 011979/ 012001/ 272006/ 291978/ 31
Extreme Daily Precipitation (mm)90.694.063.093.269.867.065.283.2137.6130.0100.887.0
Date (yyyy/dd)1997/ 091996/ 122003/ 282001/ 231979/ 251990/ 201988/ 232001/ 252001/ 221986/ 191987/ 191984/ 05
Extreme Snow Depth (cm)28231530000012018
Date (yyyy/dd)1998/ 072004/ 011987/ 031986/ 101981/ 011981/ 011981/ 011980/ 011981/ 011984/ 292006/ 302006/ 01
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 °C4.21.90.650.00.00.00.00.00.00.121.52.210.5C
> 0 °C26.926.430.430.031.030.031.031.030.030.928.528.8354.8C
> 10 °C0.590.371.711.125.529.831.031.029.718.72.20.73182.4C
> 20 °C0.00.00.00.00.401.63.73.60.440.00.00.09.7C
> 30 °C0.00.00.00.00.00.00.00.00.00.00.00.00.0C
> 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 °C22.422.428.329.931.030.031.031.030.030.826.424.8338.0A
<= 2 °C15.212.28.52.40.160.00.00.00.00.427.513.259.5A
<= 0 °C8.65.82.70.150.00.00.00.00.00.193.66.227.2A
< -2 °C5.62.71.40.00.00.00.00.00.00.151.82.914.5A
< -10 °C0.220.190.040.00.00.00.00.00.00.00.120.150.72A
< -20 °C0.00.00.00.00.00.00.00.00.00.00.00.00.0A
< - 30 °C0.00.00.00.00.00.00.00.00.00.00.00.00.0A
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 mm21.518.322.520.819.418.319.520.122.125.724.123.7256.0A
>= 5 mm13.89.811.19.78.66.36.58.912.017.416.114.7134.6A
>= 10 mm9.35.76.55.24.53.33.26.08.412.010.29.183.5A
>= 25 mm2.61.01.61.20.600.800.651.63.04.03.02.522.6A
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 cm3.12.91.80.380.00.00.00.00.00.231.53.012.9A
>= 5 cm0.810.740.270.040.00.00.00.00.00.00.360.763.0A
>= 10 cm0.410.300.040.00.00.00.00.00.00.00.040.200.99A
>= 25 cm0.00.00.00.00.00.00.00.00.00.00.00.00.0A
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 mm22.719.422.920.819.418.319.520.122.125.924.624.8260.4A
>= 5 mm14.710.611.49.78.66.36.58.912.017.416.415.6137.9A
>= 10 mm9.76.36.65.34.53.33.26.08.412.010.39.485.1A
>= 25 mm2.71.01.61.20.600.800.651.63.04.03.02.622.8A
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 cm3.62.50.280.080.00.00.00.00.00.040.301.78.6D
>= 5 cm1.51.30.060.00.00.00.00.00.00.00.050.633.5D
>= 10 cm1.00.630.00.00.00.00.00.00.00.00.050.261.9D
>= 20 cm0.200.420.00.00.00.00.00.00.00.00.050.00.67D
Wind
1981 to 2010 Canadian Climate Normals station data
Wind
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Maximum Hourly Speed (km/h)10612098968515765748595107102
Date (yyyy/dd)1988/ 091991/ 051984/ 251985/ 121984/ 191987/ 131983/ 072001/ 311983/ 252001/ 261984/ 221987/ 13
Direction of Maximum Hourly SpeedNESSESSESSESESSESES
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 °C0000000000000C
Above 18 °C000000.80.40.800002C
Above 15 °C00000.94.713.416.11.500036.5C
Above 10 °C0003.628.687.6140.9147.872.390.20489.9C
Above 5 °C16.214.428.474160.5236.6295.9302.8220.6122.836.919.91528.9C
Above 0 °C118.9115.9161.8221.6315.4386.6450.9457.8370.6276.3163.2132.43171.2C
Below 0 °C18.68.12.60000000.36.711.147.4C
Below 5 °C7147.724.22.40.100001.830.553.6231.2C
Below 10 °C209.7174.4150.88223.11001.743143.7188.71018.3C
Below 15 °C364.7315.5305.8228.5150.468.127.523.381189293.5343.72,391C
Below 18 °C457.7400.2398.8318.5242.6154.2107.4101.1169.5282383.5436.73452.2C
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 Humidex16.99.412.816.122.025.627.033.322.017.011.812.0
Date (yyyy/dd)1970/ 011998/ 151998/ 211998/ 301995/ 241995/ 281994/ 241994/ 081995/ 062000/ 092000/ 031997/ 12
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)-22-19-13-9000000-18-23
Date (yyyy/dd)1996/ 281994/ 241995/ 041996/ 011994/ 011994/ 011994/ 011994/ 011994/ 011994/ 011996/ 211996/ 29
Frost-Free
1981 to 2010 Canadian Climate Normals station data
Frost-Free
Date/Days Code
Average Date of Last Spring Frost Mar 06 C
Average Date of First Fall Frost Nov 24 C
Average Length of Frost-Free Period 262 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%
DateApr 14Mar 20Mar 15Mar 06Feb 24Feb 17Feb 02
Probability of first temperature in fall of 0 °C or lower on or before indicated dates10%25%33%50%66%75%90%
DateNov 03Nov 10Nov 15Nov 21Dec 08Dec 12Dec 19
Probability of frost-free period equal to or less than indicated period (Days)10%25%33%50%66%75%90%
Days213238246262283292304

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.

GREEN ISLAND

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