(e.g., one day at 20°F would equal 12 frost de- normal accumulations of frost degree days dur- 

 gree days). Similarly, a melting degree day is ing 1975, but also, with the exception of Hope- 

 one day mean temperature of one Fahrenheit dale, had a near normal or above normal accumu- 

 degree above 32°. All stations had greater than lation of melting degree days by the end of July. 



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