Rhodochrosite: Specimen of rhodochrosite from the Sunnyside Mine, San Juan County, Colorado. Rhodochrosite is a manganese carbonate mineral (MnCO3) that is used as an ore of manganese and is also cut as a gemstone.
Climate for Juneau, Alaska. Juneau's coldest month is January when the average temperature overnight is 20.7Â°F. In July, the warmest month, the average day time temperature rises to 64.3Â°F. The driest month in Juneau is April with 2.96 inches of precipitation, and with 8.30 inches October is the wettest month.
Juneau weather essentials. Juneau, as with all of Alaska, experiences winters that are long, cold, and dark. The area's first snowfall often arrives sometime in October, with the Arctic chill often lingering into late May. Fortunately however, because of its latitude, Juneau also enjoys gorgeous, long summer days, the sun barely setting throughout the months of June and July.