Thermometer at 93°.

September 7. 

R. W. E. brought from Yarmouth this week Chrysopsis falcata in bloom and Vaccinium stamineum, deerberry, or squaw huckleberry, — the last with green berries, some as large as cranberries, globular (not pear-shaped), on slender peduncles, not edible, in low ground. 

Yesterday and to-day and day before yesterday, some hours of very warm weather, as oppressive as any in the year, one's thermometer at 93°.

H. D. Thoreau, Journal, September 7, 1853

Very warm weather, as oppressive as any in the year.  See September 7, 1858 (" It is an early September afternoon, melting warm and sunny. . .and ever and anon the hot z-ing of the locust is heard."); See also   June 25, 1858 ("the reflected heat is almost suffocating. 93° at 1 P. M"); July 11, 1857 ("Thermometer at 93° + this afternoon."); July 2, 1855 ("At 2 P. M. — Thermometer north side of house ... 93°")