Certainly harvest now if there is any rain on the horizon, she is mature enough.
Better to have something rather than losing any due to inaction.
Harvesting any time you like is ok, there is no need to wait for less humid days.........waiting longer could actually induce mould due to cool temps and high humidity.
Through my own experiments conducted over the last 40 years, my preferred harvest time is about 2 hours after sunrise and definitely not during any dark periods before dawn or during the night, this can lead to buds with reduce flavour/taste. I have harvested at every possible time of day or night and just after sunrise is definitely best, you want to harvest activated flowers not dormant ones!
Afternoons is when the terpene levels are at their lowest, so avoid harvesting late in the day if at all possible.