Clockvine says that summer's over

All week long the weather was more oppressive each day. It just had to rain. Yesterday morning a little cool front blew through, seemingly from the southeast, if that's possible, but at any rate not from the north. With it came monarch butterflies, but no rain. After midnight came the torrents, accompanied by thunder and lightning. The plants know it's not summer any longer, even though it's not exactly cool. There were high winds, but the clockvine (thunbergia alata; see picture taken today) didn't drop flowers.