Length of 'Freeze Free' Season Probabilities


BLACKFOOT 2 SSW, IDAHO (100915)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 55 68 75 84 91 98 101 104 109 119 131
32.5 90 97 101 110 117 124 127 131 143 145 166
28.5 123 131 136 142 143 148 151 156 175 188 217
24.5 143 146 155 160 166 178 187 190 201 208 239
20.5 157 175 187 201 205 208 212 218 229 235 272
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