Depending on your part of town, last night we received .25 to 1" ( Redbud Island Rain gauge ), if you have a gauge on you property and measured 1/2" since Saturdays rain event and Mondays, I would turn my controller to OFF. If you have a rain gauge attached to your irrigation controller, it probably is reading OFF already. All my clients I visited SUNDAY and MONDAY had their controllers reading OFF due to the rain gauge in various parts of town ( Circle C south all the way to Steiner Ranch.)
Best way to automate the SHUT OFF and adjustment of Watering percentage is with a Hunter Solar Sync or a Rainbird Weather Station ( with tipping bucket ). Weathermatic, Toro, and all brands have some kind of add on for automated runtime adjustment. They all connect directly to your controller and all consider rainfall in their runtime calculations.
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