Search for: Log In Register OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Penmen-Monteith ETo method python script for possible use as weather script Tagged: ET, micro climate, solar, weather underground This topic has 66 replies, 2 voices, and was last updated 7 months, 4 weeks ago by Ray. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In OpenSprinkler › Forums › OpenSprinkler Unified Firmware › Penmen-Monteith ETo method python script for possible use as weather script