8 



September Weather. 



September opened with nearly normal conditions prevail- 

 ing and thus continued throughout the first eight days, there 

 being during this time but two cloudy days and only one 

 rain storm of consequence, while the temperature averaged 

 seasonable on all except two days. Probably the most im- 

 portant characteristic of the month was the hot wave which 

 set in on the 9th and lasted through the 11th, with maximum 

 temperatures ranging in the 90's. The warmest day was 

 the 10th, when the mercury rose as high as on any day 

 during the summer, and, in fact, the heat was terrific, but 

 fortunately it was not accompanied by excessive humidity. 

 It is commonly supposed that these September hot waves 

 are a development of recent years, but the records of the 

 Weather Bureau indicate that this month has nearly always 

 produced its quota of warm weather, and the highest tem- 

 perature recorded at Boston in the history of this Bureau 

 occurred on a September day — the memorable "yellow 

 day" of 1881, the 7th, when the mercury rose to 102. 

 Following the culmination of this September's hot wave, the 

 temperature fell decidedly, and on no day throughout the 

 remainder of the month did it rise beyond seasonable figures. 

 On the other hand, beginning with the 15th, the nights be- 

 came quite cool, the mercury often falling below 50. The 

 first general frosts were on the morning of the 2 2d. In 

 many localities the frost was destructive, notably on the 

 lowlands of the interior, but in the eastern part of the State 

 the damage was slight. Light frosts were again general on 

 the morning of the 28th. These dates are believed to be 

 about the average. The month closed with cool weather in 

 force, although in its entirety it gave a slight excess in 

 temperature. 



The storm periods were few, and there were no particu- 

 larly large rainfalls. The average number of days with an 

 appreciable amount of precipitation was less than ten. The 

 first decided storm of the month was that which commenced 

 on the evening of the 23d and ended before noon of the 24th. 

 This was a typical coast storm which in its earliest stages 

 promised to be severe, but it lost much energy before reach- 



