The drought ceases with the dog-days.

July 27. 

8 a. m. — Rains, still quite soakingly. 

June and July perhaps only are the months of drought. The drought ceases with the dog-days. 

P. M. — To White Pond in rain. 

The autumnal dandelion now appears more abundantly within a week. 

Solidago lanceolata also, a few days probably, though only partially open.

H. D. Thoreau, Journal, July 27, 1853

The drought ceases with the dog-days. See July 24, 1854 ("A decided rain-storm to-day and yesterday, such as we have not had certainly since May."); July 31, 1855 ("Our dog-days seem to be turned to a rainy season"); August 15, 1858 ("It is the season of mould and mildew, and foggy, muggy, often rainy weather.")

The autumnal dandelion now appears more abundantly within a week. See August 4. 1854 ("The autumnal dandelion is now more common.");  September 13, 1856 ("Surprised at the profusion of autumnal dandelions in their prime on the top of the hill")