Here is a my data showing the internal mid chamber temperature of a hive through ~365 days. Temperature in a hive is analogous to heat produced/vibration/sound.

I am located at 60 deg lat N so we get a lot of light in summer and a lot of dark in winter. As you can see, the relationship clear shows a link to sunlight vs the external temperature (Coldest weather here was in Jan/Feb). Bees had a cleansing flight in early November and none until mid March. I was amazed this year to see capped brood and newly emerged brood during my 1st spring inspection April 1st. 

"Hive 1 - 16 frames - 3 frames of brood (center only), capped brood with a few newly emerged bees I saw the queen and this hive still has 60lbs of stores." notes from my log

Hive setup - Poly hive wrapped in twos with no top entrance.

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