If you don't mind placing this Oregon Scientific solar-powered weather station in the sun once every three months for eight hours, it will dutifully provide temperature and humidity data from four different locations. It's also smart enough to figure out a forecast for the next 24 hours, and claims 75% accuracy. We're assuming that goes beyond observations such as, "If thermometer is frozen, weather is cold."
The +ECO Clima Control Weather Station's $120 price might pay for itself after a couple of decades of battery buying, and its special mold alert alarm might save you costly cleanup by monitoring the humidity in its four zones. If all that excitement makes you forget what time and day it is, it also helpfully provides excruciatingly accurate time via its atomic clock. Too much information? We think not.