Weather 400 Weather Forecast Station forecasts the weather 12-24 hours in advance displays indoor and outdoor temperature and sets itself to the US Atomic Clock signal. In addition keeps track of your home's humidity levels. Outdoor temperature (up to 3 channels) Weather forecast icon Ice Alert with Green LED light Indoor temperature and humidity Daily Hi/Lo memory for temperature and humidity (toggle) Atomic clock/ Calendar Backlight 3.70"L x 1.93"W x 6.46"H 8.5 oz without battery.