ABSTRACT FOR THE MONTH OF DECEMBER, 1903. 



Meteorological Observations, McGill College Observatory, Montreal, Canada. Height above sea level, 187 feet. C. H. McLEOD, Superintendent 



tor and including 



•J HEKMOMETER. 



-6.7 

 ^6 



# BAROMETER. 



■■., 



9.8 



30. 



3°- 

 30. 



4.9 



■ 7 



3°. 

 99. 



5.8 



90. 









30. c 





99.1 





99. 









30. c 



,0 



99. 





30. '• 



J 



30. ( 

 29.! 



9 

 .9 



30. 4 

 3°-4 



G 

 » 



99- 



29H 



.9 



29.5 



,0 



29. s 





29.J 



■7 



29. j 



•3 







30.1 



7 



30. c 

 29.8 



83-3 



s.w. 



N.E. 

 N.E. 

 N.E. 

 S.W. 



S.W. 

 N.W. 

 N.W- 

 N.W. 

 N.W. 



N.W. 

 S.W. 

 S.W. 

 N.W. 

 N.W. 



ANALYSIS OF WIND RECORD. 





N. 



N.E. 



E. 



S.K. 



S. 



S.W. 



w. 



N.W. 



Calm. 





75» 



1679 



497 



3(1 



1262 



"4- 



67,2 



1336 









Unration In lus.. 



62 



106 



44 



26 



8< 



46 



312 



64 





Mean velocity.... 



12.2 



■5.8 



11. 3 



'3.2 



■50 



24.8 



= ... 



2„. 9 





Greatest lulloiiEo 

 Greatest velocity 

 ltosnltnnt [miens 



nonob 



n mints 

 i, 0,501 



UT WU8 

 was 72 



7 on the 

 1 the 13 



13th. 

 h. 





Tote 



Itatit (Zi 

 1 tuilejie 



action, 

 e, 13,729 



N.85° \y. 



• Barometer readings reduced to sea-level and 

 temperature 32° Fahrenheit. 



t Mean of bi-hourly readings taken from 

 self-recording instruments. 



I Humidity relative, saturation being 100. 

 Mean of observations at 8, 15 and 20 hours. 



r i 22 years only. \ 17 years only. 



The Greatest heat was 36.9 above zero on the 

 13th. The greatest culd was i(i.3 below zoro on 

 i h u 27t h, Hiving a range of temperature of 53.2 

 degrees. 



Warmest day was the 24th. Coldest day was the 

 28th. 



Highest barometer rending was 30-.)0 on the 

 19th ; lowest barometer was 29.11 on the 21st, giv- 

 ing a range of 1.49 inches. 



imidity observed, was 53 



Kain fell on 4 days. 

 Snow fell on 24 days. 

 Rain and snow on 4 days. 

 Lunar halos observed on 1 night. 

 No. of inches of snow on ground, 15.5. 



