Length of 'Freeze Free' Season Probabilities


WALLA WALLA 13 ESE, (358985)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 16 56 61 63 70 83 99 102 103 111 117
32.5 74 110 116 118 120 124 131 132 140 147 161
28.5 139 151 166 169 174 176 182 189 193 200 232
24.5 182 194 211 221 231 234 236 240 243 261 264
20.5 213 224 237 244 253 265 273 282 290 303 316
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