342 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 90 



POKTLAND, OREG., UNITED STATES 



Lat. 45° 32' N. Long'. 122° 41' W. H b = 153 ft. 



PRESSURE AT STATION LEVEL: COR. TO 0° C. (32° F.) AND TO 



GRAV. AT 45° LAT. 



Means of i(5 l, + 17 h ) corrected to means of 24 hours, 120th meridian W. 



29 inches -f 



Date Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Means 



.880 .970 .900 



1.005 .861 .906 



.976 .965 .913 



.9G2 1.039 .928 



.940 .973 .880 



.7S9 .951 .879 



.854 .951 .880 



.958 .991 .920 



1.154 .922 .937 



.986 1.079 .914 



.950 .970 



.906 



TEMPERATURE IN DEGREES F. 



Means of \ (daily Max. + daily Min.), corrected to 24 hours * 



Tate Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Means 



M'ns 38.0 43.2 47.4 52.2 58.0 62.6 67.5 67.7 62.1 55.2 46.7 40.2 



53.4 



TOTAL PRECIPITATION IN INCHES 



M'ns 5.62 4.58 3.11 2.38 1.53 1.04 .36 .65 1.94 2.76 5.53 



* Temperatures in vol. 79 were also corrected to 24 hour means. 



5.72 35.23 



