Do you monitor weather parameters in your garden with some automatic data logger? I use 3 different USB loggers for monitoring the air relative humidity+temperature and the soil temperature. A sample graph of temperatures (blue, ºC) and RH (magenta, %) from my melon tent current summer is attached. Unfortunately the BSIDE BTH81 Relative Humidity Temperature Recorder exhausts its battery sooner than one full season and is not very suitable for high humidity environment (readings go grazy at high humidity). My Elitech loggers can work continuously several years without exhausting their battery, but they have no RH logging feature. Is there any good alternatives for recording RH? BTW, despite the global warming, this summer has been rather cold here. According to the official data (Estonian Weather Service) July was one degree colder than the long time average and the first decade of August was even 2.5 degrees colder than the long time average.