Here in central California we're seeing more moisture coming from storms in the Pacific. Not enough for rain, except maybe some localized thunderstorms in the Sierras, but enough to increase the amount of lightning. Most of CA doesn't get summer rain or lightning, so when we do get lightning it causes a lot of fires.
My local area has been having more temperature inversions each year. Twenty years ago it happened a couple times a summer. This summer it's been over half the days. When we get the inversion it does not cool down at night at our elevation.
One of the local wineries that's been here since the '70s has vinyards in the local mountains at various elevations. They had to harvest the highest one first this year, the opposite of normal, because of all the temperature inversion days.