Length of 'Freeze Free' Season Probabilities


SNOQUALMIE FALLS, st (457773)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 61 99 116 121 130 135 143 149 155 172 193
32.5 107 143 152 157 167 178 181 189 199 212 224
28.5 138 194 210 216 230 240 250 256 264 280 ***
24.5 184 254 271 287 303 316 340 *** *** *** ***
20.5 216 296 316 348 *** *** *** *** *** *** ***
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