Hybrids do not store energy for the journey in the batteries, they store it in the fuel. The storage capacity of the fuel is not affected (much) by temperature

Hybrids do not store energy for the journey in the batteries, they store it in the fuel. The storage capacity of the fuel is not affected (much) by temperature. From a simple perspective, the batteries in a hybrid just serve to smooth out the energy demand and provide regenerative braking.