New York AVeather Bureau. 501 



Resume of Climatic Elements at Albany. 



Normal Temperatures: Annual, 48.4°; January, 23.0°; July, 73.6°. 



Maxuna: Average of annual maxima, 93°; highest [ ^^ j?/if JgSO; ^Hvate"record. 



,,. • . ™ ^f „„„„„i .v,i„;,Y,. 110 i,N„r<»et C— 18° in 18r.5 and 1878, U. S. Station. 



Mimma: Average of annual mmima, -11°; lowest. . . . ^ _^^, .^^ jg^O^ Regents' series. 



Daily variations; Mean daily ranare, greatest, 17.9°, in June; least, 12.9°, in December. 

 Periodic change, or amplitude, greatest, 14.6°, in July; least, 5.5°, in December. Average 

 variability of successive daily means in January, 7.6°. 



Prkcipitation : Average annual, 38.89 Inches; greatest average'monthly, 4.181inches, in July; 

 least average monthly, 3.54 inches, in February. 



Number of rainy]days : Greatest, 45 per cent, in-January; least, 31 per cent, InJAugust. 



C'oudinexs : Annnal percentage, 56.0; greatest, 70 per cent, in December; least, 48 per cent, 

 in June and .July. 



No. clear davs, year.. 93.0 

 No. clear days, Dec... 3.8 

 No. clear days, June . 9.3 



No. p'tly cl'dy d'ys, year 148.0 



No. p'tly cl'dy d'ys, Dec... 11.3 

 No. p'tly cl'dy d'ys, June... 13.8 



No. cloudy days, year. . . 125.0 

 No. cloudy days, Dec . . . 15.9 

 No. cloudy days, June. . 7.9 



M^-aii relative humidify : Annual, 70 per cent; greatest,^76 per c-3nt, in December; least,' 63 

 per cent, in May. 



Averaqe date of first snow, November 3d: average dato of first killing frost, October 23d; 

 averagedate of last killing frost of spring, April 13th. 



Average velocity of the'wind in miles.Sper hour: 



Jan. Feb. Mar. April. May. June. (July. Aug. Sept. Oct. (Nov. Dec. Year. 

 6.7 7.1 7,8 6.7 6.2 ,..5.9 5.6 5.0 5.2 6.1 7.0 7.0 6.35 



Resume of Climatic Elements at Rochester. 



Normal Temperaturk : Annual, 46.8°; January, 24.1°; July, 70.5°. 



„ , . „ , • mo v.- , ♦i 98° in 1881, U. S. Record. 



Maxima: Average of annual maxima, 92° ; highest ^ ^q^^ j^^ jg^^^ Regents' and private records. 



„. . . , , ■ ■ CO 1 .. <— 12° in 1873 and 1875. U.S. records. 



Minima: Average of annual minima, -6°; lowest. ^ _j^o j^ 1861, Regents' and private records. 



DnUy variations: Mean daily range, greatest. 19.5°. in June; least, 14.5°, in .January. Daily 

 period!'- change, or amplitude, greatest. 13.5°, in June: least, 4.0°, in December. Average 

 variability of successive daily means in January, 7.4° (approximately). 



Prkcipitation: Average annual, 35.06 inches: greatest average monthly, 3.33 inches, in June; 

 least average monthly, 2.43 inches, in September. 



Number of rainy days: Greatest, 65 per cent, in January; least, 32 per cent, in August. 



Cloudiness: Annual percentage, 61.0 ; greatest, 83 per cent, in December ; least, 44 percent, 

 in August. 



No. clear days, year . . 66.0 

 No. clear daj's, Dec... 0.9 

 No. clear days, Aug. . . 10.1 



No. p'tly cl'dy d'vs, year... 136.0 

 No. p'tly cl'dy d'ys, Dec... 6.7 

 No. p'tly cl'dy d'ys, Aug.... 13.4 



No. cloudy days, year. 163.0 

 No. cl'^udy days, Dec. . 23.4 

 No. cloudy days, Aug. 7.6 



Mean relative humidity : Annual, 72 per cent ; greatest, 80 per cent, in January and De- 

 cember ; least, 64 per cent, in May. 



Average date of first snow, October 29r,h; average date of first killing frost, October 15th; 

 average date of last killing frost of spring. May 5th. 



Average velocity of the ivind in miles, per hour : 



Jan. Feb. Mar. April. May. June. July. Aug. Sept. Oct. Nov. Dec. Year. 

 13.8 12.7 13.2 11.3 10.0 8.8 8.0 7.9 9.4 10.4 11.8 13.1 10.63 



