We are at the Winter Solstice. The Northern Hemisphere has tilted as far from the Sun as it planned to, and has now started back. Days are getting longer, and Spring is on the way. I went out at the last moment of Autumn and measured the soil temperature of the KHG. After ten days in the low thirties (with one clear night touching 13F), and with a six-inch blanket of new fallen snow (it’s still coming down), the temperature one foot down at 8:48PST was 40F. A minute later, when Winter was well and truly started, the temperature was still 40F, so I can confidently say that the arrival of Winter had no effect on the deep soil temperature of the KHG.
Green Thumb Up My Nose: Winter Solstice