I exchanged a private message with CLA concerning the different readings between the two pages.
He told me that the issue is one of calibration of the 2' temp probe. It is currently reading too high. But it would be expensive to recalibrate so he has done a low-tech calibration against another probe.
The temp posted on the second page (the 39 degree reading) is what the incorrectly calibrated probe is actually reporting. He then manually adjusts the reading based on the comparison with the other probe, and posts that on the BC Weather page.
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