The overnight forecast low temperatures over the weekend in the Angus Glens are set for around 5C or 41F so I'm thinking about taking a medium weight merino wool sweater as well a lightweight summer 2 season down sleeping bag.

I believe that there is some warm weather at the moment in the USA. How difficult would things get if the power grid went down (apparently a current DHS terrorist advisory to utility providers has been issued)? Keeping cool would be pretty challenging especially in the heat islands of large cities such as New York, where there was little relief from the heat during the evenings.