When I first finished my Chambers "Mark Silver " build, it was -20C, but went hunting anyway.
It always seemed to go off as fast in winter as any other time.
After a few years, "cold" lost its appeal. I still hunt in cold, as it nearly always is in our hunting season, But Real cold days I look out and think, "It'll be warmer when the sun gets up!".....................and check the forum instead!
My hands too. Permanently pinched nerve , and fingers fight me at the best of times, never mind when it's cold.
Mind, working outside today was -20 C, and I didn't bother with my coat. weskit yes. Flat cap yes! LOL.