I would like to congratulate Weatherflow. I was wondering how low the sensor could go. I live in Whitehorse, Yukon, Canada (60N) and my Davis VP2 station was always stopping reporting with lows below -39.6C. With my WF station, I was able to measure -43.8C this morrning (Meteowhitehorse website).
WF is not perfect, as I am still off with my barometic pressure, but the temperature sensor is great for a station at this price! Worth mentionning it!