Temperatures there can get as low as â 65 Â F ( â 54 Â C ) in mid-winter , and as high as 99 Â F ( 37 Â C ) in summer . Temperatures there have been recorded as low as â 65 Â F ( â 54 Â C ) in mid-winter , and as high as +99 Â F ( +37 Â C ) in summer .