Length of 'Freeze Free' Season Probabilities


FOREST GROVE, e: (352997)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 64 102 116 126 132 139 143 148 152 165 188
32.5 130 149 156 166 170 174 179 190 199 211 231
28.5 169 200 210 217 225 234 245 255 266 279 318
24.5 200 249 266 280 294 303 314 339 *** *** ***
20.5 258 306 322 *** *** *** *** *** *** *** ***
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