It all depends on whose weather you want to watch.
-- Everybody's weather, all over the Earth ... north/south (polar) orbit
-- Close-up view of weather within a certain limited range
of latitudes ... oblique orbit
-- Very limited range of latitudes, close to the equator ... low east/west orbit
-- Daily coverage of the same north/south strip ... synchronous oblique orbit
-- Continuous 24/7 view of the same area ... synchronous stationary orbit
