Length of 'Freeze Free' Season Probabilities


PORTHILL, IDAHO (107264)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 45 77 84 92 99 102 105 110 116 129 135
32.5 92 109 115 117 126 132 138 141 148 150 163
28.5 121 135 138 147 152 158 163 167 172 187 234
24.5 150 178 182 192 195 200 202 209 215 231 294
20.5 178 208 218 229 235 240 244 251 259 274 295
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