MLRA 58A - Northern Rolling High Plains, Northern Part Montana and Wyoming 105,620 km2 (40,780 mi2)

Climate:
Average annual precipitation-300 to 500 mm in most of the area and as much as 750 mm in the mountains, but it fluctuates widely from year to year. Maximum precipitation is in spring and early in autumn. Precipitation in winter is snow. Average annual temperatur-4 to 7 C. Average freeze-free period-120 to 140 days.

12/16/98