Length of 'Freeze Free' Season Probabilities


HARPER sta, (353666)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 56 63 72 76 82 85 98 102 109 112 133
32.5 80 95 99 107 113 122 126 130 137 146 160
28.5 116 122 124 136 143 147 151 158 163 172 175
24.5 134 140 150 160 164 167 171 179 189 203 228
20.5 144 174 177 186 193 198 201 203 220 242 253
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