Length of 'Freeze Free' Season Probabilities


ROSEBURG KQEN, OREGON (357331)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 117 139 149 156 165 174 191 192 194 200 220
32.5 168 180 196 205 207 219 235 240 248 250 264
28.5 203 225 247 264 285 292 320 *** *** *** ***
24.5 254 306 *** *** *** *** *** *** *** *** ***
20.5 309 *** *** *** *** *** *** *** *** *** ***
Graphic Output
 Shortest - Least number of consecutive days recorded with minimum temperature 
            above threshold.
            *** means minimum temperature below threshold has not occurred.

xx% - Percent probability that a consecutive number of days will occur with the minimum temperature not below the threshold. *** means non-occurrence of the threshold
Longest - Greatest number of consecutive days recorded with minimum temperature above threshold. *** means that at least one year occurred when minimum temperature below threshold was not recorded. Note: All periods include August 1.

Western Regional Climate Center, wrcc@dri.edu