Aldan has the typical eastern Siberian
subarctic climate (
Köppen Dfc) with short, warm, and humid summers with cool nights, and severely cold winters. though it is affected by the
Pacific Ocean more than localities in the lower
Lena basin, which gives it much heavier rainfall during the summer than most of the republic, as well as a little more snowfall and rather less extreme winter temperatures – though still extremely cold for the latitude and as much as colder than settlements actually on the Okhotsk coast. In spite of the less extreme winters vis-à-vis more northerly parts of Sakha, Aldan has never seen any day above freezing from 22 November to 7 March inclusive. Although winters are somewhat less extreme than
Yakutsk, summers are actually somewhat cooler, and cloudier, than those northerly areas. The coldest temperature recorded in Aldan since the weather station was opened in 1937 has been on 20 January 2023 and the hottest on 3 July 2021. February 1969, with a mean temperature of , has been the coldest month on record, shading the preceding January which averaged . The hottest month has been July 1941 which averaged , the wettest August 2006 with of rain, and the driest March 1937 with only of water equivalent. }} ==References==