The importance of temperature and relative humidity for honey bees is well known, and all activities of honey bee colonies are under the control of these factors. Temperature, in particularly, is very important for internal as well as external activities of honey bee colonies. Maintaining a suitable range of temperature from 33 to 36 °C inside colonies is very important for honey bees (Petz et al. 2004). Deviation from this range can affect the developmental period of honey bee immature stages, emergence rate (Tautz et al. 2003), colour of emerged bees (DeGrandi-Hoffman et al.