I found this pattern in "The Quilter" magazine May 2008 Thought it was cute so saved it for -- well -- a "Rainy Day"
The pattern in the magazine was 37" sq. that was a little bigger than I need for the office so I reduced it down by 25% and made it 23" x 24"
I think it will work just fine for Oregon in the spring. ;o]
Hope you have a great day. :o}