Mt Whitney Zone Forums Gear Heads 36 Degree sleeping bag for Late July JMT/Whitney trip?

Would a 36F sleeping bag cut it for the Kearsarge to Whitney leg of the JMT around late July? I am currently looking at the Sea to Summit Micro MCII: the price and the form factor are attractive.

Or am I better off with a bag with a lower rating (like the Magma 10)?

Thanks.