You don’t have to worry about heat if you’re only getting down to 20°F, it regularly gets down to 0°F where I live and up to 105°F, adult chickens will be fine. I would just go with Rhode Island reds and or Plymouth barred rock as they are pretty much bulletproof and available anywhere. Just make sure you have shade and good ventilation for the heat, and plenty of water.
You don’t have to worry about heat if you’re only getting down to 20°F, it regularly gets down to 0°F where I live and up to 105°F, adult chickens will be fine. I would just go with Rhode Island reds and or Plymouth barred rock as they are pretty much bulletproof and available anywhere. Just make sure you have shade and good ventilation for the heat, and plenty of water.