would this jacket be too warm for weather around the 40's
in the 40s, you can probably get away with just a shell and shirt underneath. this jacket with its insulation might be too much.
I have this jacket and we've had temps ranging from -7 to 38 this week. This jacket is light enough for use in warmer temps, plus the underarm venting makes it easy to cool down. If you get too warm, it's easy to unzip the vents, open up the cuffs, and use the velcro (instead of the zipper)to fasten the jacket. When you do this, the jacket breathes like you wouldn't believe. Hope this was helpful.