Rangelands of Pakistan are mostly arid, the majority of them are seasonal in character which supply forage throughout spring and summer seasons of growth but are incapable to provide feed in fall and winter. These seasonal variations affect the livestock production. There is a dire need to be aware of the seasonal variations in the nutritive value of grasses in order to optimize their forage use. The research was conducted to determine the seasonal variation in nutritional value of five grass species found in Kherimurat scrub forest and rangelands. General observations of increasing percentage of all nutrients except for dry matter were observed from summer to winter season and then reverse from winter to spring in the major range grass species of Kherimurat.