Do other planets have climates?
Differential heating of the surface by solar radiation, due to day-night spin about planet's axis, leads to minimum and maximum, in daily temperatures. Climate is this overall weather condition, over a period. Climate changes are attributed to both thermal currents in the atmosphere (if any) and the tilt of spin axis from the normal to the orbital plane. Spin (day) period comparison: Mer - 176; Ven - 117; Ear - 1; Mars - 1.03; Jup; - 0.41; Sat - 0.45; Ura - 0.72; Nep - 0.67. Also, tilt angles, orbital periods and atmospheric conditions vary.