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.

PORT RENFREW
BRITISH COLUMBIA

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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)4.14.66.28.411.113.415.315.613.49.66.13.89.3C
Standard Deviation1.61.51.31.01.20.91.00.70.90.81.61.41.2C
Daily Maximum (°C)6.37.59.712.315.217.419.420.017.812.98.55.912.7C
Daily Minimum (°C)1.81.62.74.36.99.411.011.19.06.33.71.65.8C
Extreme Maximum (°C)19.016.520.024.527.531.031.733.528.924.017.215.0
Date (yyyy/dd)1981/ 101991/ 261994/ 282004/ 302005/ 272003/ 061972/ 031981/ 091974/ 201980/ 051970/ 031980/ 27
Extreme Minimum (°C)-12.5-10.5-6.7-2.50.01.75.02.2-0.6-3.5-11.5-11.1
Date (yyyy/dd)1982/ 061989/ 021971/ 011982/ 061975/ 241976/ 021986/ 041972/ 121972/ 271984/ 311985/ 261972/ 08
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)544.0362.0356.0258.1154.6107.950.582.4123.9371.0575.4468.93454.7C
Snowfall (cm)11.814.66.30.60.10.00.00.00.00.24.312.150.0C
Precipitation (mm)555.7376.6362.3258.7154.7107.950.582.4123.9371.2579.7481.03504.6C
Average Snow Depth (cm)1100000000010C
Median Snow Depth (cm)1000000000000C
Snow Depth at Month-end (cm)0000000000120C
Extreme Daily Rainfall (mm)241.8292.8180.094.791.791.4106.7150.5109.8216.4220.0234.6
Date (yyyy/dd)1993/ 241986/ 231997/ 171970/ 051974/ 241974/ 031972/ 111991/ 292005/ 291975/ 162002/ 181979/ 13
Extreme Daily Snowfall (cm)24.035.018.07.92.00.00.00.00.03.229.041.0
Date (yyyy/dd)2004/ 061995/ 141991/ 011975/ 021999/ 061970/ 011970/ 011970/ 011970/ 011984/ 311985/ 261996/ 28
Extreme Daily Precipitation (mm)241.8292.8180.094.791.791.4106.7150.5109.8216.4220.0234.6
Date (yyyy/dd)1993/ 241986/ 231997/ 171970/ 051974/ 241974/ 031972/ 111991/ 292005/ 291975/ 162002/ 181979/ 13
Extreme Snow Depth (cm)38252210000002947
Date (yyyy/dd)1982/ 021990/ 152002/ 082005/ 021981/ 011981/ 011981/ 011981/ 011981/ 011980/ 011985/ 271996/ 29
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 °C0.700.240.0800000000.521.12.6C
> 0 °C30.32830.93031303131303129.529.9362.6C
> 10 °C2.93.412.221.729.83031313026.182.2228.2C
> 20 °C00012.85.31012.760.080037.7C
> 30 °C000000.080.160.1300000.37C
> 35 °C0000000000000C
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 °C18.7172427.430.930313130302418.6312.6C
<= 2 °C16.916.214.37.720000.12410.818.490.5C
<= 0 °C12.311.272.60.1300000.96612.452.6C
< -2 °C3.130.750.08000000.081.42.811.3C
< -10 °C0.090.04000000000.0400.17C
< -20 °C0000000000000C
< - 30 °C0000000000000C
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 mm22.117.82219.316.713.999.611.118.822.821.5204.7C
>= 5 mm16.812.114.511.88.16.42.53.4512.217.415.1125.3C
>= 10 mm13.4910.58.35.43.61.42.13.910.213.712.594C
>= 25 mm7.54.94.83.11.90.800.281.21.6586.845.8C
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 cm2.92.220.330.0400000.0812.511.1C
>= 5 cm0.840.880.420.040000000.300.743.2C
>= 10 cm0.320.480.1300000000.040.431.4C
>= 25 cm00.12000000000.040.040.20C
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 mm22.818.422.319.316.713.999.611.118.823.122.4207.3C
>= 5 mm17.412.61511.88.16.42.53.4512.217.615.5127.5C
>= 10 mm13.99.610.98.35.43.61.42.13.910.21412.996C
>= 25 mm7.65.24.83.11.90.800.281.21.6586.946.4C
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 cm4.23.10.620.050000001.32.111.4D
>= 5 cm2.42.10.3800000000.850.416.1D
>= 10 cm1.40.890.2400000000.250.293D
>= 20 cm0.050.06000000000.150.120.38D
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 °C0000000.1000000.1C
Above 18 °C00000.11.84.23.50.20009.9C
Above 15 °C0000.21.99.726.129.8700074.7C
Above 10 °C0.30.10.91149.4103160.3171.4103.824.82.90.1628.1C
Above 5 °C27.624.850.7102.3188.4252.3315.3326.4252.7145.155.320.81761.6C
Above 0 °C130.8131.7193.6250.8343.3402.3470.3481.4402.7298.5185.4119.53410.2C
Below 0 °C52.50.300000003.1515.9C
Below 5 °C56.936.512.41.5000001.72361.3193.3C
Below 10 °C184.5152.8117.660.216.10.7001.136.4120.6195.7885.7C
Below 15 °C339.2293.7271.7199.3123.657.420.913.454.3166.6267.7350.52158.3C
Below 18 °C432.2378.3364.7289.2214.7139.59280.1137.6259.6357.7443.53189.1C
Frost-Free
1981 to 2010 Canadian Climate Normals station data (Frost-Free)
Frost-Free
Date/Days Code
Average Date of Last Spring Frost Apr 08 D
Average Date of First Fall Frost Oct 31 D
Average Length of Frost-Free Period 205 Days D
1981 to 2010 Canadian Climate Normals station data (Frost-Free)
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 02Apr 22Apr 19Apr 12Apr 07Mar 28Mar 21
Probability of first temperature in fall of 0 °C or lower on or after indicated dates10%25%33%50%66%75%90%
DateOct 12Oct 26Oct 29Nov 02Nov 07Nov 09Nov 11
Probability of frost-free period equal to or less than indicated period (Days)10%25%33%50%66%75%90%
Days167187194204215218231

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.

PORT RENFREW

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