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233 Climatology of the United States. 
On the Coast. |ginmer Interior. Summi| Differ ; 
Lat. | Long. | *™P- Lat. | Loog. | Oe 
j ° 
Fort Humboldt...) 40 46 |124 9| 57:4 || Fort Reading | 40 30 |122 5| 80-0 | 226 
3 3 
San Francisco 7 48 [122 26, 57-3 || Sacramento. | 38 34 [12 4o} 73-0 | 15:7, 
Monterey ....... 36 36 |121 52} 58-6 || Fort aha .| 37 0 [119 40} 85:5 | 26 
San Diego....... 32 42111714! 712 |] Fort Yuma, . | 32 43 1114 36| govo | 18 
8. Through about 20 degrees of latitude, the mean summer 
increases slightly in going from California to Oregon. This wi j 
appear from the following ehacergint 
Mean 
Latitude, Longitude. Summer. Years, . 
temp’re, 
Monterey ....... 36°36 12 15a 586 5 | 
San Francisco...) 37 48 | 122 26 | 59°3 4 
Fort Humboldt, ..) 40 46 | 124 9 | 574 | 18 | 
Fort Orford ..... 42 44 | 124 29 | 59:9 | 2 ; 
Astoria 46-11 | 123 48} 616 | 1 | 
Sitka 57_ 3 | 135 18 | 542 | 7 . 
4, The mean temperature of the California coast 1s s nearly con- 
stant for six months of the year—from May to October,—and at | 
some places the warmest month of the year is either Ma ay, a2 
caked or October. This will appear from the following 0 
ati 
| May, | Juse. | Joly. | Aug. | Sept. | Oct. | Years. 
56 8 | 585 | 596 | 593 | 5641 5 
San Francisco ...| 55:3 | 568 | 57-9 | 572 | 58:3 | 579] 4 
Fort Humboldt...| 55-3 | 586 | 56-9 | 570 | 570 | 530 4 
At Monterey in 1847, and also in 1850, September was the 
warmest month of.the year; and in 1349 Ma ay was the pies « : 
month. At San Francisco in 1858 and also in 1854, Octobe 
was the warmest month of the 
coast in fntitude 40°, during summer is 56° 5; which it ye ns 
observed is a little below the foniviebtitte of the coast stati 
given Ties 
The distribution of rain on the Pacific coast presents anomall™ 
quite as remarkable as the distribution of temperature. At gee 
places not a drop of rain falls for three months or more in oe - 
eon, and the total fall for the year does not exceed fr from “ths 
nches; while other places are literally delaged with rain. 
7 ll appear from the following table, showing the fall of rain at 
sixteen stations near the Pacific coast. 
