On average, there are 126 sunny days per year in Anchorage. For reference, on January 8, the windiest day of the year, the daily average wind speed is 6.6 miles per hour, while on July 6, the calmest day of the year, the daily average wind speed is 4.2 miles per hour.
Climate Anchorage - Alaska and Weather averages Anchorage The estimated value at Anchorage is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Anchorage and a given station. The hourly average wind direction in Anchorage throughout the winter is predominantly from the east, with a peak proportion of 48% on February 12. Average daytime summer temperatures range from approximately 55 to 78F (12.8 to 25.6C); average daytime winter temperatures are about 5 to 30F (15.0 to 1.1C).