Length of 'Freeze Free' Season Probabilities


SPRAY stat, (358009)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 70 76 88 90 102 106 110 113 120 124 129
32.5 106 108 120 123 128 132 134 136 144 149 154
28.5 127 149 151 156 158 162 167 173 177 184 197
24.5 167 173 179 191 196 199 202 207 211 227 244
20.5 202 209 221 233 244 251 260 266 272 302 ***
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