Since as the other post says windows and snrf are on the same fuse, look for a loose connection or bad ground, particularly around the fuse block. Rarely a fuse itself is good (yours must be otherwise you would not even get clicks) but has corroded ends, or the contacts it sits in are dirty. This kind of thing can of course work properly sometimes and may be sensitive to temperature and humidity.

Do all other accessories on the car work? Also are the cowl drains and rubber seals near the fusebox area ok? I am wondering if you got some very heavy rain or something that caused water to get in there.