Length of 'Freeze Free' Season Probabilities


OREM TREATMENT PLANT, UTAH (426538)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 127 135 139 142 145 153 158 159 165 177 186
32.5 140 154 160 167 176 180 186 203 207 216 234
28.5 168 202 215 216 220 225 227 229 238 258 268
24.5 224 228 232 238 242 250 253 264 274 282 289
20.5 236 243 261 265 271 279 285 293 300 321 ***
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