Last frost date in McMinnville?
What are the last frost dates and first frost dates for 2013 in McMinnville (elevation approx 300' asl.)
Yamhill County Oregon
This is the eternal question each spring and fall and it varies from year to year. Our frost free days range from 150 to 250! That wide of a range makes a definitive answer problematic. However, from mid-May to Mid-October we can almost count on not getting any frost. Outside of those dates, keep a sharp eye on the weather and use appropriate protective measures as needed.
I am including a link to Oregon State University Extension Service's "Planting dates and regions for growing Oregon vegetables" which I think you will find to be very helpful. http://extension.oregonstate.edu/gardening/planting-dates-and-regions-growing-oregon-vegetables
Good luck with your gardening in 2013 and ask again if we can be of further assistance.