Peas= Total failure

I wish I had taken a picture of my failed sugar snap peas, but I was so discouraged I pulled them all out before I could. Last year, I had beautiful snap pea plants that produced absolutely wonderful peas. This year, I transplanted them and we promptly had a late frost. I didn't think this would be a problem, but two weeks later we had 90-degree weather. I think they just couldn't make it against the rapidly fluctuating temperatures. The leaves yellowed, dried up, and died. I watered them, I gave them compost and good soil to grow in, they got plenty of sunshine and still they died. I was really looking forward to sugar snap peas!! I planted another row directly outside last weekend, and they have sprouted. I just don't know if they'll have enough cool weather left to thrive in, as it's been almost 90 degrees again a few days this week. So much for Connecticut's temperate growing season!