Here is a book that will help you keep knitting year round. The patterns are split into seasons with 4 patterns for each of Spring, Summer and Fall, and 3 patterns for Winter. (There are so many winter knitting patterns that I don't mind there are fewer patterns.) The eBook contains a lot of diversity, the patterns include lightweight tops, bags, dishcloths, throws, ponchos, Scarves, and Sweaters.
Normally when I think of summer I don't think of Ponchos, but the Lacy Summer Poncho has completely changed my opinion. This simple eyelet design looks cool both in terms of fashion and of temperature. It would be a great item to have with you in case the evening turns a little chilly, but it also shouldn't make you sweat! The other Easy Poncho Pattern fits better in another season because it doesn't contain the same airiness. The Short Sleaved Hooded Sweater (Fall) is adorible, but I would want to lengthen the ribbing at the bottom to make it more flattering on my body type. I love the Thrifty Market Bag (Spring). Knit market bags are fantastic for taking to Farmer's Markets because they won't make you sweaty by carrying them and they allow your produce to breathe.
I am so glad that I know about this free eBook! I know that there are many warm weather knitting patterns available, but I was disappointed in a past search for spring and summer knitting pattern books. Now I see no reason to buy a book when you can get the collection in 15 Free Cute Knitting Patterns For Every Season for free!