r ' 







Meteorological Abstract for 



the Yea 



r 1903. 









w. 



Observations made at McGill College Observatory, Montreal, Canada. — Height above sea level 187 ft. Latitude N. 45° 30' 17". Longitude 4 h 54 m 18'-67 



C. H. McLEOD, Superintendent. 







Thebmometeb. 



• Babometeb. 



if 



Wind. 



<£ 



Precipitation. 



Month. 





1 



2 -S 



i 



^1 ■ 



= 2 = 



"s 1 e 



As 



jg*S 



is^S 



Mouth. 



i 



3 



IT Devia- 



lion from 

 29, years, 



a 



3 



1 



13 S! 



i 



3 



i 



3-§£ 



Resultant 

 direction. 



Mean 

 velocity 



per hour. 





14-61 



Is, 86 

 11 IS 



ii mi 



.',7 7!i 

 MM 

 117 72 

 62 00 

 Vi 99 



.12 09 

 14.03 



+ 2.17 

 + 3.13 

 + 9.15 

 + 3.22 

 + 3.02 



- 1.83 



- 1.08 



- 4.55 

 + 1.38 

 + 2.59 



- 0.56 

 -4.90 



38.6 

 46.5 

 62.0 

 82.2 

 64.8 

 84.2 

 88.0 

 BO 2 

 83 

 66.8 

 56.0 

 36.9 



—20.0 



-11.8 



— 0.6 



12.8 



27-9 



46.5 



54.0 



43.3 



39.6 



25.2 



4.3 



-16.3 



16.2 

 )3.7 

 13.6 

 18.2 

 24.2 

 16.8 

 14.9 

 14.9 

 16.3 

 14.7 

 11.8 

 15.4 



29.898 



211 962 

 III) 1SH 

 2U 895 

 311.1197 

 211 931 

 21) 8-17 

 29.1169 

 30.1162 

 29 995 

 29 999 

 29.946 



30.50 

 30.41 

 30.71 

 30 48 

 30.52 

 30.38 

 30.16 

 30-43 

 30.43 

 30.41 

 30.76 

 30.60 



29.11 



28.97 

 29.38 

 29.34 

 29.58 

 29.58 

 29.46 

 29.45 

 29.48 

 29 42 

 29 12 

 29.11 



.35 

 .39 

 .28 

 .21 

 .20 

 .12 

 .14 

 .11 

 .20 

 .23 

 .25 

 .35 



81.3 

 81.2 

 80.7 

 63.8 



59 7 



70 5 

 7.3 1 



71 :: 



72 3 

 74 i. 

 82 9 

 .S3 h 



N. 77° W. 

 S. 37° V. 

 S. id' W. 

 X. 51° VT. 

 S. 16° W. 

 S. 1°B. 

 N.84°W. 

 N. S7° vy. 

 S. 32" K. 

 S. 8° W. 

 S. 62° \V. 

 N- 85° W. 



10.3 

 18.4 

 16.7 

 15.8 

 14.4 

 11.8 

 12.6 

 10.3 

 13.1 

 16.4 

 17.6 

 18.5 



27.3 

 32.7 

 34.0 

 43.0 

 63.5 

 38.0 

 56.0 

 47.1 

 64.0 

 38.4 

 36.6 

 19.8 



0.64 



2.16 

 3.19 

 1.61 

 0.11 

 4.76 

 2.87 

 3.17 

 1.27 

 3.56 

 0.93 

 0.61 



6 

 4 

 13 



9 



17 

 17 

 13 

 11 

 17 

 8 

 4 



33.5 



26.2 

 3.1 

 4.3 



To 



5.4 

 38.7 



20 

 12 



7 

 3 



"i 

 19 

 24 



4.08 

 5.28 

 3.49 

 2.22 

 0.11 

 4.76 

 2.87 

 3.17 

 1.27 

 3.71 

 1.46 

 4.32 



2 

 1 

 1 



1 



3 



5 



4 



24 

 15 

 19 

 8 

 9 

 17 

 17 

 13 

 11 

 18 

 22 

 24 











Mw 





























S16 78 



a 07 



+ 0.'B8 







15. 'li 



29.982 







'.'24 



M.'a 



S. i'J V. 



ii.'} 



ii.'f 



24.88 



125 



112.7 



89 



36.74 

 3.06 



17 



197 









Means for 1903 . 









McaiiH for 21' yoiirn omlinttt 



42.09 











29.979 









75.5 





al4.8 



§45-3 



28.93 





120.3 





40.96 







S Means for 29 ye 

 i Doc. 31, 1903.. 



ara ending 













•Iluriitniii'i rQadingB reduced hi 32" Full, mid to sea level, t The monthly thermometer and barometer moans aro derived from bi-hourly readings taken from self-recording instruments, beginning 1 h. m. Eastern 



Shiiilnr.i tin,,.. ■: "+" iii,|i,.-ni,..< tl,:ii t| M . ],;, t.ii-iii. h:i« !„■,■, i ;,,■„/,, r: " — " thnt it bin hoc:; hnrrr than 1 In- average for 29 years iiielusivo of Ulil.'l. t Humidity relative, saturation being lull; the humidity iiieans are 



""!"■"' '" ' i vnlin in, inn, 1" in s/i, 10/, and Si/., 'i Fur 22 years mil v. ,, Fur 17 years only. The anemometer and wind vnno are on the summit of .Mourn Kuial,54 lcet above the ground and 807 feet above sea level. 



1, fur .(III) days only. 



u » ''''if"™"'"'! heat was 88.0° (Pah.) above zero on July 9th; tho greatest cold was 20.0 below zero on Jan. 19th. The extreme range of temperature was, therefore, 108.0°. Greatest thermometer range in one day was 

 n .i "ii Mil)' 1 ; li'iisl rung,) was .", II" on Mn roll ;,th. The warmest day was July Kith, when the mean temperature was 79.7° above zero. The coldest day was Jan. 19th. when the moan temperature was 111.2° below 



;"',"',, "!" '"," J"" rein live liuiunlit.v oliservi-d wns 2') mi Juno 4lh. The greatest lulling" of wind recorded in one hour was So on Feb 2sth. and the grcn'est velocity in gusts was at the rat" of 72 miles per hour on 



»»ri oil, "i Vved (Ml "" U ' t0ta ' mileag0 of winii ™ os 119 ' 935 *■ Tbc rosultlint direction of tho wind for the year was S. 62° W., and tho resultant mileage 38268. Lunar halos were observed on 5 nighls. Auroras 

 »■• on OcuJll' ' lll> '* ' """'d""' 01 ™ 8 on 12 days; total numbor of thunderstorms 14. First sleighine of winter in city was on Dec. 6th. The first appreciable snowfall of the autumn was on Oct. 26th. The first trace of snow 

 Nont.— Tho yearly moans of tho above aro tho avoragos of tho monthly means, except for the velooity of the wind. 

















































