I woke up in the dark today at 0630 to 16 degrees Fahrenheit--minus 8.8 Celsius--temperatures, and a rather chilly bedroom. Long story, never mind. A few short hours later, the air temperature outside was only 35F (slightly above freezing). But--because of the cloudless sky and bright sunshine--the temperature in my little sunroom was 80F (26.6C). … Continue reading December 20, 2023