[wgjordan]

From the same dataset:

Hours of sunshine during winter months (Dec + Jan + Feb): Boston: 464 Seattle: 235 (-50%)

Annual hours of sunshine: Boston: 2615 Seattle: 2019 (-23%)

so it's accurate to say that Boston is sunnier than Seattle and much sunnier during the winter.

[asah]

And that's not silicon valley... say Mountain View, CA: - 560+ hours during winter months - 3,070 annual

https://weather-and-climate.com/average-monthly-Rainfall-Tem...