Length of 'Freeze Free' Season Probabilities


RIDDLE sta, (357169)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 39 105 120 128 137 143 148 150 157 168 208
32.5 123 151 159 166 176 184 197 203 214 236 265
28.5 160 205 225 239 252 262 273 290 309 *** ***
24.5 228 261 288 307 349 *** *** *** *** *** ***
20.5 239 *** *** *** *** *** *** *** *** *** ***
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