Length of 'Freeze Free' Season Probabilities


PORTOLA st, (047085)
Temp F Shortest 90% 80% 70% 60% 50% 40% 30% 20% 10% Longest
36.5 1 1 2 5 7 15 20 30 37 47 59
32.5 1 2 12 25 29 41 52 69 84 97 109
28.5 1 39 45 54 72 83 96 109 122 138 153
24.5 37 92 119 132 144 156 161 167 182 191 210
20.5 91 144 156 168 174 183 192 200 208 229 250
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