OREGON— FROST IN THE ROGUE RIVER VALLEY 



1517 



Under usual conditions we are quite safe 

 in saying that there may be little danger 

 to tlie crops on the higher lands sur- 



rounding the main floor of the valley. 



P. J. O'GOBA, 



Special United States Weather Observer. 



Official Record of the Rainfall During' the Six Growing Mouths for Eight Years at 



Medford, Oregon 



Frost and Precipitation for Oregon 



STATIONS 



Columbia Valley Group: 



Blalock 



Condon 



Heppner 



Pendleton 



Umatilla 



Weston 



Blue Mt. Group: 



Baker City 



Canyon City 



Dayville 



Joseph 



La Grande 



Sparta 



Plateau Group: 



Beulah 



Burns 



Happy Valley 



Lakeview 



Paisley 



Prineville 



Riverside 



Vaie 



Hood River 



Medford 



Coast Group: 



Doraville 



Astoria 



Glenora 



Newport 



Gardiner 



PortOrford 



Willamette Valley Group: 



Portland 



Salem 



Monroe 



Pompeii 



Detroit 



McKenzie Bridge 



Southern Oregon Group; 



Drain 



Roseburg 



Grant's Pass 



Buckhom Farm 



Ashland 



East Slope Cascade Mta. 

 Group: 



Cascade Locks 



The Dalles 



Warmspring 



Bend 



Crescent 



Silver Lake 



Klamath Falls 



Fort Klamath 



Length 



of 

 record 

 years 



10 

 5 



10 

 18 

 7 

 19 



20 

 5 

 14 

 19 

 19 

 13 



16 

 16 

 10 

 25 

 5 

 12 

 12 

 17 



7 

 22 

 17 

 18 

 19 



4 



37 

 16 



12 

 14 

 5 

 7 



18 

 20 



n 



20 



18 

 19 



7 



Average date 



last killing 



frcst in spring 



March 23. 

 June 9 . . . . 



May 6 



May 8 



April 14... 

 May 13... 



Average date 



first killing 



frost in autumn 



November 2 . . 

 September 14. 

 September 29 , 



October 5 



October 22..., 

 September 24 . 



May 24 September 28. 



May 19. 

 May 18. 

 June 15. 

 May 20. 

 May 13 . 



June 27 



June 25 



rOn account of 

 [ months, but 

 May 25 . . . 



June 8 



June 26. . . 

 May 30, .. 

 March 31.. 

 April 29... 



November 4 . . 

 December 2. . . 

 October 11. , , 

 December 22. 

 December 8. . . 

 KiUing frosts 



November 16 

 November 2. 

 November I , 

 Frosts occur in 

 September 21 

 September 12 



September 26 

 October 30... 

 October 12... 

 October 16... 

 October 14... 



November 13. 

 November 5. . 

 September 25 . 

 Frosts occur in 

 No records. 

 Frosts occur in 

 Frosts occur in 

 Frosts occur in 



October 6. 

 September 20 , 

 September 7 , 

 September 22 , 

 September 28 , 



August 29 



August 26 



elevation, killin 

 seldom occur i 

 September 24 . 

 August 21. . . . 

 August 30. . . . 

 September 9. . 

 November 9 . . 

 October 11.... 



April 13 



March 6 



May 10 



March 19.... 



March 27.. .. 



on March 15, 



March 16. . 

 April 10... 

 April 19... 

 all months. 

 May 4 , , . . 

 June 1 . . . . 



April 27. 

 April 15. 

 May 6 . . 

 May 1 . . 

 April 20. 



April I , . . . 

 April 10.,. 

 Mav 24 . . 

 all months. 



all months, 

 all months, 

 all months. 



Latest date 



killing frost 



iu spring 



Aprill2... 

 June 19... 

 May 30 . . . 

 June 24 . . , 

 April 30... 

 June 16 . . . 



June 24 . . . 

 June 13 . . , 

 June 6 . . . , 



July? 



June 24 . . , 

 June 23 . . , 



July 15..., 



July 9.,,, 

 g frosts are posa 

 n June, July an 



June 14 



July 5 



July 4 



June 25 



April 23 



May 6 



September 24 . 

 November 1 , . 

 September 10 

 October 19.,., 

 November 1 . . 

 16. 1906,Januar 



October 13... 

 October 8. , , 

 September 16 



September 6. 

 August 26 . . . 



August 28 . . . 

 October 9. , , . 

 September 11 

 September 7, 

 September 20 



October 11. . 

 September 26 

 September II. 



Earliest date 

 killing frost 

 in autunm 



October 16. . 

 September 5 

 September 3. 

 September 8. 

 September 25 

 September 8. 



September 4 , 

 September 20 

 August 31. . . 

 August 3 . . . . 

 September 6 . 

 August 31. . . 



August 9 



August 3 



ible in all 

 d August. 



September 10 



August 2 



August 9 



August 21 . . . 



October 14... 



May 3 



May 18 



April 22 



June 25 



April 27 



May 10 



y 13, 14, 1907. 



May 17. 

 May 10. 

 May 14. 



May 17. 

 June 24 . 



May 10. 

 May 16. 

 June 13. 

 May 26 . 

 May 18. 



May 2 , . 

 May 12. 

 June 14. 



Average 



number 



rainy days 



annual 



44 

 70 

 84 

 78 

 55 

 93 



108 

 85 

 80 

 93 

 98 

 83 



46 

 45 

 80 

 72 

 53 

 44 

 46 

 68 



164 

 187 

 171 

 181 

 146 

 169 



164 

 133 

 160 

 153 

 132 

 172- 



130 

 135 

 106 

 118 

 103 



160 

 74 

 71 

 71 

 87 

 SI 

 46 



Precipitation 

 annual 

 inches 



9.48 

 11.98 

 14.37 

 14.08 



8.43 

 24.67 



12,88 

 17.23 

 12.35 

 18.09 

 19.13 

 22.74 



11.21 



13.73 

 17.18 

 10.90 

 9.04 

 9.76 

 10.03 



55.52 

 75.35 

 132,81 

 69.84 

 79.31 

 92.25 



42.45 

 39 60 

 51.81 

 84.89 

 65.16 

 69.84 



44.63 

 34.67 

 32 20 



78.87 

 16.47 



18.88 

 10 40 

 12.54 

 21.47 



