This study presents a new framework for assessing the effectiveness of the implementation of climate adaptation policies for the agriculture sector at the subnational level. The role of the subnational level in climate policy is highly relevant, especially on the heels of the Paris Agreement (PA) of 2015. However, there is limited literature on climate adaptation policy implementation at the subnational level in the agricultural sector. Climate adaptation policy in agriculture is generally discussed at the national level, and subnational climate adaptation policies rarely address agriculture. Thus, this study was conducted to fill this gap by establishing an analytical framework based on the two existing literatures, which are not connected: climate adaptation policies at the subnational level and adaptation policies in the agricultural sector. The core components of the framework are (i) locally driven initiatives, (ii) locally capable institutions, (iii) legally implementable measures, and (iv) effective intergovernmental relations. The framework is then applied to Khyber Pakhtunkhwa (KPK) and Punjab, two provinces in Pakistan, a country highly dependent on the agricultural sector and one of the most vulnerable to climatic changes. We found that both provinces have locally driven policies and have made efforts to build capabilities in their public administrations to adapt to climate change in the agriculture sector. Punjab has advanced in several indicators of the components of the framework but still is weak in others, such as local monitoring and evaluation efforts. KPK has interesting efforts in the dissemination of farmers’ adaptation innovative initiatives (hidden adaptation), but still lags behind in the legal base for the policies. Finally, both provinces lack strong institutions for intergovernmental relations.