I am borderline hypothermic sat at my desk in jeans, boots, thick socks, a merino baselayer and a merino l/s top :w00t: and it is June! Let alone going out there in rain and wind on an exposed hillside!
This summer has been ridiculously cold so far No time to get complacent, thinking it is June I won't need much. ALWAYS carry warm and waterproof kit, you never know when you may need it!