When the 10 day weather report finally included my date I wasn't too shocked. Unhappy? Yes. Shocked? No. It said "showers" (60% chance precipitation) for the rehearsal/rehearsal dinner and "scattered showers" for the big day. Yup, just my luck. Yes, I did rent a tent, but was I still hoping it would be a beautiful sunny warm day? Of course! What bride wouldn't wish for that?!
Your day could be beautiful as well, but you should definitely still plan for rain. I say if you're having an outdoor wedding, get a tent. You may not be able to see the stars from your dinner table, but you can still feel the grass beneath your feet (and if you step outside the tent you can see the stars)! Plus if you get tent walls it keeps the chill out.