Length of 'Freeze Free' Season Probabilities


SWAN FALLS P H, at (108928)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 123 134 143 149 155 159 164 170 180 193 208
32.5 141 155 162 169 176 186 196 204 209 220 247
28.5 170 195 207 216 222 225 230 235 242 249 270
24.5 187 231 238 246 250 255 265 272 281 292 317
20.5 188 255 267 275 280 288 297 303 314 326 ***
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