When you have a frost warning on the first day of June.
Good thing I haven't had time to start the garden yet.
I don't know if we got quite to a frost warning (I don't garden so I don't pay attention to that), but we're crazy chilly for the first of June, too -- I had my space heater on at work today and finally gave up and put it about six inches from my arm.
And we had a picnic after church yesterday -- burgers and hot dogs, watermelon, kickball. The pastor announced it during the service as, "We're having a nice fall