This paper investigates the use and production of relevant knowledge for climate adaptation activities. The analysis is based on a case study of so-called local area experts that are involved in the day-to-day practical operations of assessing the risk of avalanches in a high risk avalanche area in northern Norway. In this article we map out how local knowledge held by these local area experts plays out in relation to other forms and sources of knowledge. From this we develop two lines of argument. Firstly that assemblages of climate adaptation are produced as collaborative guesswork related to coupling and negotiation of different types of knowledge in a decision context. Secondly, we discuss what local expert knowledge might mean for the understanding of the relationship between climate science and climate policy.