Length of 'Freeze Free' Season Probabilities


SALEM MCNARY FLD, st (357500)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 31 110 123 133 140 145 155 163 171 181 214
32.5 92 148 156 171 180 187 194 203 220 235 317
28.5 149 192 206 223 237 247 252 264 281 311 ***
24.5 212 249 264 282 292 303 317 339 *** *** ***
20.5 258 309 326 *** *** *** *** *** *** *** ***
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