Here in Puget Sound, it is currently 41*F, I have collected 1/5, but it is early yet from our 1 Sexlink, 1 Buff Orpington and 3 RIR's. Yesterday it was in the low 30'sF and I collected 3/5. However, the temp has been in the low 30's/high 20's and have only gotten 1-2 eggs out of possible 5. We were close to running out completely. I have also been choosy about when I let them out. I keep them inside when the temp it too low or it is raining too much so they don't get over exposed.