solar heating cloudy days?
Generally speaking, do you find that your GH is still warmer than ambient outdoor temps on CLOUDY days, without an additional heat source?
If so, how much warmer?
I don't have a GH yet. I ask because whenever we have a March snowstorm, the weatherfolks talk about how the sun is so strong in March that, even through the clouds, we may see most of it melt.
Does that mean that, at least during the part of the year where solar angle is higher, that a GH will get at least a little solar heating on cloudy days?