OREGON— FROST IN THE ROGUE RIVER VALLEY 



1517 



Under usual conditions we are quite safe 

 in saying that there may be little danger 

 to the crops on the higher lands sur- 



rounding the main floor of the valley. 



P. J. O'GOBA, 



Special United States Weather Obseryer. 



Official Eecord of the Bainfall Buring the Six GrowiBg Months for Eight Years at 



Medford, Oregon 





1905 



1906 



1907 



1908 



1909 



1910 



1911 



1912 



April 



0.67 

 3.59 

 1.29 

 0.05 



0.98 

 3.06 

 1.09 



2.07 

 1.31 

 67 

 0.38 

 2.22 

 68 



0.43 

 1.40 

 0.83 

 0.11 

 0.04 

 0.46 



0.35 

 0.62 

 1.07 

 0.26 

 0.04 

 0.04 



59 



1 46 

 44 

 22 



"6.96" 



1.27 

 1.49 

 71 

 16 



"i'.i3" 



4 40 



May 



2 45 



June 



2 19 



July 



August 



0.20 

 07 



September 



89 



2.30 



1 11 







Total 



6.49 



7.43 



7.33 



3.27 



3.38 



3.67 



4.75 



10 42 







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 



Lakeviow 



Paisley 



Prineville 



Riverside 



Vale 



Hood River 



Medford , 



Coast Group: 



DoraviUe 



Astoria.. 



Glenora 



Newport 



Gardiner 



PortOrford 



Willamette Valley Group: 



Portland 



Salem 



Monroe 



Pompeii 



Detroit 



McKenaie Bridge 



Southern Oregon Group: 



Drain 



Roseburp; 



Grant's Pass 



Buckhom Farm . . . 



Ashland 



East Slope Cascade Mts. 

 Group: 

 Cascade Locks 



The Dalles 



Warmspring 



Bend 



Crescent 



Silver Lake 



Klamath Falls 



Port 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 



19 



4 



37 

 16 

 12 

 14 

 5 

 7 



18 

 20 

 11 

 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 



Novembers.. 

 September 14. 

 September 29 . 



October 5 



October 22..., 

 September 24, 



May 19. 

 May 18. .. 

 June 15 . . . 

 May 20... 

 May 13 . . . 



June 27. ..... 



June 25 



f On account of 

 1 months, but 



May 25.... 



June 8 



June 26 



May 30. ... 



March 31., . 



April 29 



Latest date 



killing frost 



in spring 



May 24 September 28 . 



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, 



November 4 . . 

 December 2... 

 October 11.... 

 December 22. . 

 December 8.. . 

 Killing frosts 



November 16. 

 November 2.. 

 November 1 . . 

 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 



March 16.. 

 April 10... 

 April 19... 

 all months. 



May 4 



June 1 



April 27. 

 April 15. 

 May 6. . 

 May 1 . . 

 April 20. 



April 1 . . . . 

 April 10... 

 Mav 24 . . . 

 all months. 



all months, 

 all months, 

 all months. 



April 12. 

 June 19. 

 May 30. 

 June 24. 

 April 30. 

 June 16 . 



June 24 . 

 June 13 . 

 June 6 . . 

 July 7. . 

 June 24. 

 June 23 . 



Earliest date 

 killing frost 

 in autumn 



July 15 



July 9 



g frosts are poss 

 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.... 



Octobers 



September 16. 



September 6.. 

 August 26 



August 28 — 



October 9 



September U . 

 September 7. . 

 September 20. 



October 11.... 

 September 26 

 September 11 . 



October 16.. 

 September 5 

 Septembers. 

 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. 



Average 



number 



rainy days 



annual 



May 2 . , 

 May 12. 

 June 14 . 



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 

 163 

 132 

 172 



130 

 135 

 106 

 118 

 103 



160 

 74 

 71 

 71 

 87 

 61 

 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 



44.53 

 34.67 

 32.20 

 68.68 

 20.18 



78.87 

 16.47 



18.88 

 10.40 

 12.54 

 21.47 



