Steady mercury.

Well, the mercury had been fairly steady in the high 30s °F all autumn, until this morning when it took a nose-dive and reached 22° F.  And that was recorded on the thermometer that is protected below Vinoland's deck: the lowest temperature recorded in Napa was 19° F, and that's quite chilly for here.
Brrr!  Forget the wine, pass me the Cadbury Drinking Chocolate.