Station Monthly Statistics for 2023 -- Piers Island

at Piers Island

Station name Year

graph of annual means
Month Minimum
(Std. Dev.) °C
January5.06.5 (0.8)8.231
February3.05.0 (1.1)7.228
March4.46.7 (1.4)9.331
April5.98.1 (1.3)10.630
May10.713.1 (1.5)16.931
June11.814.1 (1.5)17.930
July13.315.7 (1.6)19.531
August14.016.4 (1.6)20.231
September12.014.1 (1.3)16.930
October9.110.9 (1.2)13.431
November5.97.8 (1.2)10.130
December6.47.9 (0.9)9.531

How are Monthly Means Calculated?

The table shows values for each month of the selected year in the database. Values are given in degrees Celsius. Averages shown here are calculated from daily averages for the month. The value in parentheses following the monthly mean value is the standard deviation of the daily averages used to compute the mean. The minimum (maximum) is the average of the minimum (maximum) temperature observed on each day of the selected month. Table rows are shown in descending order of Mean value. In some cases the present month may be incomplete.

The values are plotted so that the minimum and maximum are marked at the end of the whiskers, the mean value is shown with a horizontal tick across each box, and the boxes show the range of plus and minus one standard deviation from the mean value. The average temperature is shown with a dashed horizontal line and the average extremes are drawn with dotted lines. The blue curve is a spline that connects the monthly means.

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The Vancouver Island School-Based Weather Station Network is an education first project. Data from the network are made freely available as is to the public with no guarantee of accuracy or availability. Commercial use requires a license. Please contact Ed Wiebe, ecwiebe at for more information. This work (this site and all contents not otherwise attributed) by School-Based Weather Station Network is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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Last Modified: May 17 2022 09:33:10.