Cummins has a
hot-summer mediterranean climate (
Köppen: Csa), with very warm, dry summers and mild, wetter winters. Temperatures vary between seasons, with average maxima ranging between in January and in July, and average minima fluctuating between in January and in August. Annual precipitation is low, averaging , between 121.4 precipitation days- primarily concentrated in winter. Extreme temperatures have ranged from on 24 January 2019 to on 4 June 2017. Climate data is available for the Airport only since 2007.{{cite web ==References==