Length of 'Freeze Free' Season Probabilities


HEPPNER st, (353827)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 62 92 104 110 115 119 123 128 133 142 155
32.5 108 129 137 142 148 154 156 160 164 178 207
28.5 137 158 175 185 190 194 197 203 212 223 244
24.5 165 200 214 223 233 241 247 257 269 283 316
20.5 198 244 247 263 267 277 292 303 317 *** ***
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