Length of 'Freeze Free' Season Probabilities


DORA 2 W s, r (352370)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 114 116 124 133 136 145 148 148 158 167 174
32.5 139 144 152 173 179 181 190 198 213 225 256
28.5 217 225 237 256 266 280 290 291 297 330 341
24.5 281 290 291 301 321 342 *** *** *** *** ***
20.5 *** *** *** *** *** *** *** *** *** *** ***
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