Length of 'Freeze Free' Season Probabilities


ARIZONA SONORA DESERT M, ARIZONA (020415)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 214 155 223 162 236 241 256 178 305 193 339
32.5 241 162 256 181 281 290 307 195 334 219 344
28.5 282 195 312 217 *** *** *** 235 *** 257 ***
24.5 *** 228 *** 251 *** *** *** 271 *** 294 ***
20.5 *** 265 *** 282 *** *** *** 310 *** *** ***
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