Meteorology for Twenty Years. 87 



STATE FROST RECORD. 



Average date of Average date of 



STATIONS last killing frost first killing frost 



In spring in autumn 



Alcova-Pathfinder May 21 September 19 



Cheyenne May 21 September 17 



Chugwater June I September 15 



Basin . May 10 September 20 



Buffalo May 28 September 21 



Clark May 4 October 14 



Eaton's Ranch May 16 October 5 



Fort Laramie May 15 September 20 



Gillette May 23 October 4 



Hyattville May 19 September 21 



Lander May 26 September 1 1 



Laramie May 30 September 16 



Lusk May 25 September 13 



Moorcrof t May 23 September 20 



Newcastle May 22 September 20 



Pine Bluffs May 27 September 19 



Rawlins June 3 September 1 3 



Sheridan May 21 September 24 



Shoshone Dam . May 26 September 21 



Thermopolis May 8 September 13 



Wheatland May 1 1 September 24 



ACKNOWLEDGMENTS. 



Mr. R. Q. Grant, Section Director, Wyoming Station U. 

 S. Weather Bureau, has kindly furnished the authors with all 

 tables of the summarized climatological data for the State of 

 Wyoming, compiled from the records in his office. 



