Ribbed Shrug in Progress

Now I am knitting my first shrug ---
The pattern is from here.
I am making Pam Allen's Ribbed Shrug with Rowan's Calmer.
This yarn has a good stretch and I think it is perfect for this design.
The pattern says to knit it in flat and sew the sleeves in the end,
but I decided to work in circle so that I don't have to sew anything.
So far, it looks good ---
the only thing that bothers me is the temperature suddenly went up
and it's close to 90F now... oh my god... it's just too hot to knit!