Length of 'Freeze Free' Season Probabilities


THE DALLES MUNI AP, (451968)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 125 139 145 150 155 158 162 173 176 182 195
32.5 149 161 171 178 182 188 194 197 203 211 261
28.5 172 191 204 213 219 227 232 238 244 260 303
24.5 217 236 242 248 264 271 277 290 303 *** ***
20.5 249 263 276 295 307 319 *** *** *** *** ***
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