Mr. T. Butler King was furnished by Surgeon General Lawson, United States Army, with the following thermometrical observations:
At San Francisco, by Assistant Surgeon W. C. Parker, for six months, embracing the last quarter of 1847, and the first quarter of 1848. The monthly mean temperature was as follows: October, 57°; November, 49°; December, 50°; January, 49°; February, 50°; March, 51°.
At Monterey, in latitude 36° 38´ north, and longitude 121° west, on the coast, about one degree and a half south of San Francisco, by Assistant Surgeon W. S. King, for seven months, from May to November inclusive. The monthly mean temperature was: May, 56°; June, 59°; July, 62°; August, 59°; September, 58°; October, 60°; November, 56°.
At Los Angeles, latitude 34° 7´, longitude west 118° 7´, by Assistant Surgeon John S. Griffin, for ten months, from June, 1847, to March, 1848, inclusive. The monthly mean temperature was: June, 73°; July, 74°; August, 75°; September, 75°; October, 69°; November, 59°; December 60°; January, 58°; February, 55°; March, 58°. This place is about forty miles from the coast.
At San Diego, latitude 32° 45´, longitude west 117° 11´, by Assistant Surgeon J. D. Summers, for the following three months of 1849, viz: July, monthly mean temperature, 71°; August, 75°; September, 70°.