[smt88]

This is risking a flame war, but I'd suggest anyplace with so little sun has "uncontroversially" terrible weather. It literally causes health issues.

Also, a city doesn't need good weather all year to have better weather than Seattle.

All that said, I personally doubt weather (and execs' preferences about it) will factor directly into the decision.

[ghaff]

It depends on what people value. Seattle (like Portland) does have gloomy winters--as does a lot of the northern tier of the US. But it doesn't get big snowfalls, bitter temperatures or--in the summer--long stretches of hot, humid weather or blisteringly hot and dry weather. The summer in Seattle tends to be about as pleasant as anywhere.

I can certainly see someone preferring Phoenix or Las Vegas, say, to Seattle in terms of weather but I wouldn't personally.

(I do agree that weather is perhaps one of the least relevant factors to this decision.)