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.

KELOWNA A
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)-2.5-0.94.18.412.816.619.519.113.97.31.6-2.68.1C
Standard Deviation2.62.41.41.11.31.41.41.11.50.82.62.81.3C
Daily Maximum (°C)0.83.610.115.520.224.227.927.621.713.45.60.714.3C
Daily Minimum (°C)-5.8-5.3-2.01.35.49.111.110.65.91.3-2.4-5.91.9C
Extreme Maximum (°C)14.814.720.828.134.438.039.539.334.826.820.614.5
Date (yyyy/dd)1989/ 301988/ 211994/ 311987/ 271983/ 291992/ 251994/ 241998/ 041987/ 011984/ 081975/ 031980/ 27
Extreme Minimum (°C)-31.7-25.3-19.4-8.9-4.2-0.62.60.6-6.1-15.7-28.4-36.1
Date (yyyy/dd)1969/ 231996/ 011976/ 031975/ 012002/ 081973/ 091977/ 051973/ 191972/ 271984/ 311985/ 281968/ 30
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)8.910.016.928.339.245.937.232.131.729.124.47.6311.3C
Snowfall (cm)26.910.84.80.80.00.00.00.00.00.113.632.089.0C
Precipitation (mm)31.019.021.629.140.245.937.232.132.429.236.732.6386.9C
Average Snow Depth (cm)10500000000152C
Median Snow Depth (cm)9500000000042C
Snow Depth at Month-end (cm)92000000002122C
Extreme Daily Rainfall (mm)12.812.913.727.623.429.833.821.233.424.014.414.2
Date (yyyy/dd)1997/ 201981/ 251972/ 221987/ 301996/ 301990/ 101997/ 211999/ 301985/ 061996/ 281992/ 041972/ 21
Extreme Daily Snowfall (cm)26.019.19.44.20.80.00.00.00.06.919.823.6
Date (yyyy/dd)1982/ 231973/ 041969/ 051981/ 061982/ 031969/ 011969/ 011969/ 011969/ 011971/ 311996/ 171992/ 26
Extreme Daily Precipitation (mm)24.716.016.827.623.429.833.821.233.424.026.617.0
Date (yyyy/dd)1982/ 231973/ 041998/ 021987/ 301996/ 301990/ 101997/ 211999/ 301985/ 061996/ 282003/ 181992/ 26
Extreme Snow Depth (cm)51564110000003046
Date (yyyy/dd)1975/ 181975/ 201972/ 051983/ 101970/ 011970/ 011970/ 011970/ 011970/ 011969/ 011996/ 281971/ 16
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 °C10.75.70.830000000.08211.631C
> 0 °C20.322.530.230313031313030.92819.4334.3C
> 10 °C0.291.516.527.5313031313024.44.50.21227.8C
> 20 °C000.214.514.82429.129.5192.400123.5C
> 30 °C00001.13.510.9100.9600026.4C
> 35 °C000000.431.91.300003.7C
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 °C3.13.79.11928.330313128.219.29.72.9215C
<= 2 °C30.727.626.517.76.40.3900.044.117.425.130.8186.6C
<= 0 °C27.824.621.9112.80001.811.820.328.1150.2C
< -2 °C21.519155.50.540000.686.213.922.6104.9C
< -10 °C5.84.70.790000000.292.45.619.5C
< -20 °C10.52000000000.4212.9C
< - 30 °C0.0400000000000.080.12C
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 mm5.66.28.810.712.2129.28.58.311.3114.2107.8C
>= 5 mm0.380.430.791.82.83.32.62.22.11.81.30.3819.8C
>= 10 mm0.080.130.080.460.961.310.920.800.330.250.046.4C
>= 25 mm0000.0400.130.0800.080000.33C
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 cm105.62.40.630.0400000.214.71134.5C
>= 5 cm1.70.520.2900000000.921.95.4C
>= 10 cm0.420.13000000000.290.581.4C
>= 25 cm0.04000000000000.04C
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 mm13.910.310.510.912.9129.28.58.711.314.414.1136.6C
>= 5 mm1.70.781.122.83.32.62.22.21.82224.4C
>= 10 mm0.250.170.170.460.961.310.920.800.330.650.297.3C
>= 25 mm0000.0400.130.0800.0800.0400.37C
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 cm24.616.82.30.040000004.417.465.4C
>= 5 cm21.511.20.5000000001.811.446.4C
>= 10 cm16.46.80.0800000000.837.331.4C
>= 20 cm3.71.7000000000.171.16.7C
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)4.64.76.06.66.76.76.45.34.64.44.14.75.4C
Most Frequent DirectionNNNNSSNNNNNNNC
Maximum Hourly Speed (km/h)565050564656544852565646
Date (yyyy/dd)1974/ 291990/ 052004/ 051968/ 112002/ 021967/ 031997/ 241966/ 101978/ 151963/ 211962/ 292001/ 17
Direction of Maximum Hourly SpeedNSESSESWNNWNWNSESESW
Maximum Gust Speed (km/h)9374891008287838467768480
Date (yyyy/dd)1999/ 291990/ 051973/ 161980/ 141975/ 181989/ 241998/ 301972/ 211983/ 011991/ 161975/ 031979/ 14
Direction of Maximum GustSESESWSNWNESSWSWSENW
Days with Winds >= 52 km/h0.10.00.00.00.00.10.10.10.00.10.10.10.5D
Days with Winds >= 63 km/h0.00.00.00.00.00.00.00.00.00.00.00.00.0D
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 °C000000.52.21.100003.7C
Above 18 °C0000421.964.957.74.4000152.9C
Above 15 °C0000.318.168.8142130.926.50.400387C
Above 10 °C000.816.898.7202.2294.7282.8124.814.40.401035.4C
Above 5 °C0.61.726.8109.1242.5351.7449.7437.8267.390.211.70.41989.4C
Above 0 °C21.339.2135.4254397.5501.7604.7592.8417.2229.681.520.83295.7C
Below 0 °C100.963.49.40000002.233100.6309.3C
Below 5 °C235.2167.155.75.10000017.7113.3235.2829.3C
Below 10 °C389.7306.8184.762.811.20.4007.696.9251.9389.81701.7C
Below 15 °C544.7448.1338.9196.385.617.12.33.259.3237.9401.5544.82879.5C
Below 18 °C637.7532.9431.9286164.560.218.322.9127.2330.5491.5637.83741.2C
Evaporation
1981 to 2010 Canadian Climate Normals station data
Evaporation
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Code
Lake Evaporation (mm)0002.744.55.14.32.61.1000
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 Hours39.480.9148.5191.0238.2244.9297.8281.6216.2124.550.935.11948.9C
Days with measurable16.521.827.728.329.828.830.430.129.326.819.015.8304.2C
% of possible daylight hours14.828.540.446.349.950.260.562.856.937.218.613.940.0C
Extreme Daily7.89.511.313.114.414.815.113.912.010.18.57.0
Date (yyyy/dd)1996/ 301995/ 271994/ 291980/ 301973/ 281974/ 171998/ 251998/ 041988/ 011975/ 011995/ 011991/ 19
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 Humidex13.014.521.128.037.042.346.445.634.926.720.613.9
Date (yyyy/dd)1992/ 311988/ 211966/ 291987/ 271983/ 291961/ 171964/ 281961/ 141987/ 011984/ 081975/ 031980/ 27
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-40-33-20-10-5-100-7-18-36-38
Date (yyyy/dd)1969/ 291989/ 011989/ 011997/ 022002/ 081973/ 111959/ 011961/ 011970/ 131984/ 311985/ 271990/ 29
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 Relative Humidity - 0600LST (%)86.58684.380.377.273.573.479.286.287.987.985.182.3C
Average Relative Humidity - 1500LST (%)76.465.248.839.84039.335.636.242.255.670.675.752.1C
Frost-Free
1981 to 2010 Canadian Climate Normals station data
Frost-Free
Date/Days Code
Average Date of Last Spring Frost May 10 C
Average Date of First Fall Frost Sept 28 C
Average Length of Frost-Free Period 140 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%
DateJun 04May 25May 19May 16May 09May 04Apr 30
Probability of first temperature in fall of 0 °C or lower on or after indicated dates10%25%33%50%66%75%90%
DateSep 09Sep 17Sep 19Sep 23Sep 30Oct 03Oct 10
Probability of frost-free period equal to or less than indicated period (Days)10%25%33%50%66%75%90%
Days109116121131142144157

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.

KELOWNA A

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