Woodinville has a warm Mediterrenean climate with warm, dry summers and cool, wet winters. Though precipitation is distributed through the year, winters get the majority of rainfall. Summer months are basically dry apart from the exception of brief, sudden showers.
If you want to visit Woodinville and don’t like to get drenched then plan a visit around April – June or September – October. The weather drops a few Celsius and is quite pleasant. However if dancing in the rains is your thing, then best time to visit Woodinville is during the winters.