As promised, I've uploaded a couple of photos from my last trip to Lisbon to contrast with the most recent. Usually in January Lisbon has beautiful weather; my trip last week coincided not only with crappy weather back home but also with crappy (but warmer) weather there.
In January 2001, the view from Castelo de São Jorge looked like this:
And my January 2001 obligatory Parque Eduardo VII photo came out substantially better than my most recent attempt. Here's the older one: