Length of 'Freeze Free' Season Probabilities


RAGER RS s, r (356982)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 7 21 999 39 46 53 59 71 83 93 120
32.5 39 66 999 91 99 103 111 115 122 135 158
28.5 85 123 999 139 145 152 160 166 173 184 206
24.5 131 177 999 200 206 216 227 237 255 280 ***
20.5 199 236 999 261 275 290 304 314 *** *** ***
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