▁an ▁elev ation ▁of ▁around ▁, ▁D ul an ▁County ▁has ▁a ▁sub al pine ▁semi - ar id ▁climate ▁( K ö ppen ▁B Sk ), ▁with ▁long , ▁very ▁cold ▁and ▁winter s , ▁and ▁warm ▁sum mers . ▁A verage ▁low ▁temper atures ▁are ▁below ▁free zing ▁from ▁early / mid ▁October ▁to ▁mid / late ▁April ; ▁however , ▁due ▁to ▁the ▁wide ▁di urn al ▁temperature ▁variation , ▁only ▁December ▁and ▁January ▁have ▁an ▁average ▁high ▁that ▁is ▁below ▁free zing . ▁With ▁month ly ▁percent ▁possible ▁sun sh ine ▁r anging ▁from ▁ 6 0 % ▁in ▁July ▁to ▁ 8 1 % ▁in ▁November , ▁the ▁county ▁seat ▁is ▁very ▁sun ny , ▁receiving ▁ 3 , 0 9 2 ▁hours ▁of ▁bright ▁sun sh ine ▁ann ually ; ▁relative ▁hum id ity ▁in ▁all ▁months ▁is ▁below ▁ 5 0 % ▁and ▁is ▁for ▁six ▁months ▁below ▁ 4 0 %. ▁The ▁month ly ▁ 2 4 - hour ▁average ▁temperature ▁ranges ▁from ▁ ▁in ▁January ▁to ▁ ▁in ▁July , ▁while ▁the ▁annual ▁mean ▁is ▁. ▁Over ▁ 7 0 % ▁of ▁the ▁annual ▁precip itation ▁of ▁ ▁is ▁delivered ▁from ▁May ▁to ▁August . ▁ ▁Transport ▁China ▁National ▁Highway ▁ 1 0 9 ▁ ▁References ▁ ▁External ▁links ▁ ▁Category : Count y - level ▁divisions ▁of ▁Q ing hai ▁Category : Ha ix i ▁Mong ol ▁and ▁Tib et an ▁Aut onom ous ▁Pref ect ure <0x0A> </s> ▁Events ▁in ▁the ▁year