Today is a nice sunny day, 42 F., so I thought I would I compare the temperatures of my different color nuc boxes with an infrared thermometer. Here are pictures of the thermometer pointing at some of the boxes. One nuc that has a light green bottom box and a darker green top box has a 20 F. difference in temperature between the top and the bottom. The bees are in the top box but since a cluster only warms itself I doubt the bees are making a big difference on the outside of the box. They are all fairly equal as far as how much sun they get. I do not wrap my hives and this shows me that I really do not need to, I live at 43°47'44.9"N.
This double nuc has a dark green box which is 102.5F and the light green box on the bottom is 82F.
White box is 34F and the gray box is 91.5F so even a little pigment adds heat.
The rust box is 87.5F and the pink box is 75F.
This salmon box is a 10 frame box and this color had the highest temperature. The photo on the right is a hive in the shade, it is cooler than the air temperature which is 42F today.
I also took reading from other things.
Dark green clapboards in the sun and a natural colored fence.
The bark of a sugar maple, the sap should be running soon!
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