Wicked turn of events

Despite the cool weather we have experienced I was rather proud of how my garden was coming along, until things took a wicked turn. I awoke to ice crystals on the lawn. Ackkkkkkk-that means the garden is in danger. Sure enough the potatoes, tomatoes, peppers, and beans were all stunned by frost. June 17 for heavens sake. I should know to expect that here, but it seems to always surprize me that we could be this far into summer and still under attack by the cold. I thought this was an interesting thing, note the picture of two bean plants. The one on the left is very frost damaged, the one right next to it is fine. How could that be? Isn't cold air everywhere at once? This is some super plant that is cold tolerant? Maybe I should save the beans and replant them next year.