Unless the chickens are a year or younger, most will slow down or quit laying during the "Persephone Days", when there is the least amount of daylight, about three months. I think it is said that chickens need at least 12 hours of daylight, preferably 14, to continue laying. Pullets in their first year of laying may not slow down on production.
This year I am trying a light in my coop for the first time, having it on for 13 hours. I think it is helping, but the girls are not a year old yet, so I can't say for sure.
It doesn't have anything to do with temperature, just hours of daylight. Hopefully, your chickens and mine will keep up the good work.