Plenty of warm spells here in FL have not affected my colony. They are in my facility with no A/C, but plenty of airflow. I freeze water in large plastic containers and place it in the 5 gallon watering system a few times a day. Water keeps them cool and 6 of the 10 females I bred a few weeks back had litters the last few days averaging 12-13 per each litter. 4 more are due to have babies in a few days.