I'm doing a Harvest Moon walk tomorrow evening, which should be nice. And, it's always good to celebrate the first day of fall.
It's warm enough still (too warm, actually) that the nocturnal symphony (crickets, cicadas, tree frogs, and their ilk) is still in full swing, although muted by droughty weather.
And, we need rain. Planting (of shrubs, perennials or fall vegetables) requires lots of watering to properly get a planting place ready. Even in the mountains, I've had to frequently drench my raised beds to keep up moisture levels.