We were at CSS from March 16-23. It was overcast and a little rainy the day we arrived. Which was fine since we didn't get there until 4pm. The next morning it was overcast with some drizzle but by late morning, the blue sky and sun came out. And they stayed out the rest of our trip (it was 85* and just a little breezy... so perfect). I did speak to some of the other guests that had been there a few days prior to us on the day we arrived (which was Sat). They said it had been overcast and rainy since Wednesday.
I was happy to bring the nicer weather. I would assume it normally is nice.
Linda & Nick
CSA - Oct 2004 (for our wedding!!!)
CN - March 2006, Nov 2013
CSS - March 2013