About 30°.

March 10 

2 P. M. — About 30°.

H. D. Thoreau, Journal,  March 10, 1860


Compare March 10, 1856 ("Thermometer +9° at 3.30 P. M."); March 2, 1860 ("2 P. M. — Thermometer 50°."): March 3, 1860 ("2 P . M . — 50°"); March 8, 1860 ("2.30 P. M. — 50°. "); March 9, 1860 ("2 and 3 P. M. — Thermometer 41°."); March 11, 1860 ("2 P . M . — About 40° ."); March 15, 1860 ("Thermometer 50° . On the whole the finest day yet (the thermometer was equally high the 3d ), considering the condition of the earth as well as the temperature of the air. . . The temperature has been as high on three days this month , and on the 3d  considerably higher, and yet this has seemed the warmest and most summer - like . . . How admirable in our memory lies a calm warm day amid a series of cold and blustering ones ! The 11th was cold and blustering at 40; to-day delightfully warm and pleasant ( being calm ) at 50°.")