Toes feel a chill in the tile this morning? It is more autumnal now after four days in the 80s last week. Trees are showing some color, and it's almost time to find the rake. They were preparing for a freeze overnight in the western counties, and there may be some morning readings in the 30s north and west of Baltimore. Average first frost for Annapolis is Oct. 11. For Baltimore, it's Oct. 29.