Warmer temperatures primarily affect the hydrologic cycle in the following ways:
A. Increases the rate of Evapotranspiration - Warmer temperatures can lead to higher rates of evaporation from soil and water bodies, as well as increased transpiration from plants.
C. Increases surface runoff into drainage basins - Warmer temperatures can result in more intense precipitation events, which can increase surface runoff, especially if the ground is saturated or if the rainfall falls too quickly for it to be absorbed.
So, the correct answers are A and C.