310 HY. Gibbons on the Climate of San Francisco for 1855. 
of land winds 3 per cent, sea winds 97. The sea breeze always 
loses its force in this month, though it is apt to recur every after- 
noon with great regularity, as in the present instance. On eight 
days the afternoons were windy, but there were no high winds. 
The general range of temperature was from 52° to 58° through 
the night, and from 62° to 72° at noon. It was at or above 70° 
on eleven days. 
Barometric means for October: sunrise 29:780 in., 9 a.™ 
29-799, noon 29-751, 10 p.m. 29°778. Extremes, 29:95 and 
‘59. 
November.—Mean temperature at sunrise 46°°60, at 94. mM 
55°-73, at noon 59°-20, at 10 p. m. 49°37. Mean of extremes 
52°-90. Maximum 67°, minimum 42°; range 25°. Warmest 
morning 58°, coldest noon 52°. Proportion of clear sky 70 per 
cent, of cloudy 30. Whole days clear eleven, cloudy two. Rain 
on seven days, quantity 1:15 in. Mist on five mornings and 
three evenings. Wind N and NW nine days, NE and E one day, 
SE and § seven days, SW and W thirteen days. Proportion of 
land winds 33 percent, sea winds 67. T'wo days windy in part, 
and no high winds. gale from north took place on the 2nd, 
extending over the State as do these northers in common, and 
portending rain, the barometer almost invariably falling daring a 
strong north wind. The first rain was a shower on the 10th, 
after which several moderate rains were thankfully received, but 
the ground did not become wet enough for tillage till December. 
In the early part of the month were several white frosts, and 
there was also more or less frost nearly every morning after the 
12th, the mercury ranging at sunrise during the latter period from 
42° to 46°. At noon the general range was from 54° to 64°. 
Barometric means for November: sunrise 29°862 in., 9 4» M. 
29-879, noon 29-860, 10 p. m. 29-855, Extremes 30:16 and 
29°50. 
morning 54°, coldest noon 41°. Proportion of clear sky 59 per 
cent, of cloudy 45. Whole days clear ten, cloudy eight. Rain - 
days were windy, and there was one high wind accompail 
with rain, from SW. This was as unpleasant a month as our 
climate can supply. The rains were mostly cold and in small 
quantities, and the sky almost constantly overcast. On the th 
was the very rare phenomenon of a genuine thundergust, a 
much in the style of the Atlantic States, and accompanied 
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