Length of 'Freeze Free' Season Probabilities


ASTOR EXP STN, te (350318)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 97 104 116 122 128 138 139 149 154 162 171
32.5 123 137 150 157 160 166 172 179 184 202 228
28.5 158 200 205 209 219 229 241 260 268 *** ***
24.5 240 269 295 306 314 *** *** *** *** *** ***
20.5 241 *** *** *** *** *** *** *** *** *** ***
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