Averages from 2021–2025 (155 days of record).
Expect January days in Anchorage, Alaska to top out around 24°F and cool to about 15°F overnight, with roughly 12 days of measurable rain across the month. In recent years January has ranged from -14°F to 47°F.
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Current Anchorage, Alaska forecast → · Historical data by Open-Meteo (ERA5).