No. 278. AVERAGE PERCENTAGE OF POSSIBLE SUNSHINE-SELECTED CITIES [Airport data, for period of record through 1965, except as noted] Va Wash Wis Wyo. P.R. 1 Data not available; figures are for a nearby station. Record through 1964. 4 Record through 1963. City office data. Source: Dept. of Commerce, Environmental Science Services Administration; Local Climatological Data. Monthly with annual summary. [Airport data except as noted. Eastern standard time. For period of record through 1965, except as noted. Relative humidity observations were STATION Mobile. Juneau. Little Rock. Denver Wilmington. Washington. Jacksonville. Miami Atlanta Honolulu a Boise.... ord 7:00 1:00 7:00 1:00 7:00 1:00 7:00 1:00 7:00 1:00 7:00 1:00 (yrs.) a.n. p.m. a.m. p.m. a.m. p.m a.m. p.m. a.m. p.m. a.m p.m. Vt. Va. Richmord Wash Seattle-Tacoma. Spokane.. W.Va Charleston. Wis W yo P.R Milwaukee. Cheyenne. San Juan... 1 City office data. 2 Slash numbers represent AM/PM. Record through 1964. 4 Record through 1961. 85 Hours selected to give, for most of country, approximation of average highest and average lowest humidity values. made on the half-hour prior to 1957] Source: Dept. of Commerce, Environmental Science Services Administration; Local Climatological Data. Monthly with annual summary. [In miles per hour. Airport data unless otherwise noted. For period of record through 1964] 9.3 8.1 8.8 8.1 7.8 6.1 6.2 6.1 6.4 9.8 8.3 7.8 6.6 6.3 5.7 Sacramento. San Francisco 28 16 11.4 11.7 11.8 11.0 8.9 7.8 8.4 Source: Dept. of Commerce, Environmental Science Services Administration; Local Climatological Data. Monthly with annual summary. 29 11.4 11.7 13.1 13.6 11.8 10.9 11.2 8.8 8.8 12.7 9.6 7.7 7.7 9.5 11.0 9.3 7.6 8.6 8.8 9.0 10.5 7.7 10.2 No. 281. NORMAL MONTHLY AND ANNUAL DEGREE DAYS, 65° BASE-SELECTED CITIES [Airport data unless otherwise noted. Based on standard 30-year period, 1931 to 1960. For definition of "degree day." see text, p. 172] An Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. nual Source: Dept. of Commerce, Environmental Science Services Administration; Local Climatological Data. Monthly with annual summary. 19 62 321 524 2,363 84 414 648 2,700 6 183 307 1,396 81 419 849 1,082 6,052 207 539 891 1,349 8, 269 136 408 698 3, 421 36 |