Meteorological Report for the year 1828. 71 



'i. For the several seasons. 



Mean temperature of Dec. Jan. and Feb. 28.66 37.32 

 Ditto ofMarch, April and May, 46.70 48.92 



Ditto of June, July and Aug. 62.65 72.03 



Ditto of Sept. Oct. and Nov. 51.53 52.78 



It appears, therefore, that the year 1828 has been through- 

 out warmer than the year 1 827, in the ratio of 52.50 to 49.29, 

 and that the winter months of 1828 give a mean about 9" 

 and the summer months about 10° higher than the correspond- 

 ing seasons of 1827, while the vernal and autumnal months 

 have been more nearly equal. Probably so high an annual 

 mean temperature as 52i° has rarely occurred at this place. 



The highest temperature of the year 1828 is 90*^, which 

 degree has been marked at four different times, namely, once 

 in July, twice in August, and on the first day of September. 



The lowest degree of cold observed this year, is 6 degrees 

 above zero ; and this has occurred but twice, namely, on the 

 12th and the 24th of January; while the minimum for Feb- 

 ruary was 14°, for March 13°, and for December (the last day 

 of the year) 10°. Hence, the annual range has been only 

 84°, whereas in 1827 it was 100° extending from -7 to 93. 



July and August were the hottest months, and were nearly 

 equal in temperature, each having a mean of about 72°. 

 The hottest month of 1827 was July, its mean being 69°. 



The coldest month was, as usual, January, but its average 

 teniperature was 33^°, being 11^° higher than January, 1827. 



The greatest monthly range, occurred this year, as it did 

 last, in March, and amounted to 56° ; the mercury having, 

 on the 28th of the month, reached the unusual height of 69°, 

 while on the 1st, the minimum was only 13°. In 1827, the 

 greatest monthly range was 49°. 



II. The Barometer. 



1827. 1828. 



Mean height for the year, - - 30.03 29.81 



The observations of morning and evening afford, as they 



did last year, almost the same result, that of the morning, 



being, 29.82 



and that of the evening, ..... 29.80 

 For the z^mfer months, ..... 29.91 



For the spring do. 29.85 



For the summer do. ..... 29.73 



Yor\.\\e autumnal Ao, 29.7/> 



