Length of 'Freeze Free' Season Probabilities


WASHOUGAL 8 ENE, ta (458999)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 117 122 117 135 125 134 143 154 158 165 178
32.5 147 144 166 161 186 186 187 184 190 200 207
28.5 222 183 243 194 257 267 268 212 *** 230 ***
24.5 238 210 329 231 *** *** *** 252 *** 270 ***
20.5 253 243 *** 262 *** *** *** 295 *** 318 ***
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